Title: Polyether polymer compounds as well as ion conductible polymer compositions and electrochemical devices using the same
Abstract: The present invention is aimed to provide polyether polymers capable of improving an ion conductivity around room temperature as well as ion conductible polymer compositions and electrochemical devices using the same. The above objectives are achieved by using polyether polymers characterized by having the structure unit represented by the formula (1) and the structure unit represented by the formula (2) and/or the structure unit represented by the formula (3), and having polymerizable and/or non-polymerizable functional groups at each end of the molecular chains. ##STR1##
Patent Number: 6,913,851 Issued on 07/05/2005 to Nishiura, et al.
| Inventors:
|
Nishiura; Masahito (Hyogo, JP);
Kono; Michiyuki (Osaka, JP)
|
| Assignee:
|
Dai-Ichi Kogyo Seiyaku Co., Ltd. (Kyoto, JP)
|
| Appl. No.:
|
096159 |
| Filed:
|
March 12, 2002 |
Foreign Application Priority Data
| Apr 09, 2001[JP] | 2001-110523 |
| Current U.S. Class: |
429/33; 429/317; 252/62.2; 521/25 |
| Intern'l Class: |
H01M 008/10 |
| Field of Search: |
429/33,317
521/25
252/622
|
References Cited [Referenced By]
U.S. Patent Documents
| 5433877 | Jul., 1995 | Kono et al.
| |
| 6019908 | Feb., 2000 | Kono et al.
| |
| 6218053 | Apr., 2001 | Kono et al.
| |
| 6673495 | Jan., 2004 | Nishiura et al.
| |
| Foreign Patent Documents |
| 0 331 342 | Sep., 1989 | EP.
| |
| 0 559 317 | Sep., 1993 | EP.
| |
| 0 585 072 | Mar., 1994 | EP.
| |
| 0 967 233 | Dec., 1999 | EP.
| |
| 1 057 846 | Dec., 2000 | EP.
| |
| 1057846 | Dec., 2000 | EP.
| |
| 1 130 671 | Sep., 2001 | EP.
| |
| 1 160 268 | Dec., 2001 | EP.
| |
Primary Examiner: Wu; David W.
Assistant Examiner: Hu; Henry S.
Attorney, Agent or Firm: Jordan and Hamburg LLP
Claims
1. A polyether polymer compound having a structure unit represented by a formula
(1) and at least one of a structure unit represented by a formula (2) and a structure
unit represented by a formula (3), wherein the formulas (1), (2) and (3) are as
follows:
##STR6##
and wherein said polyether polymer compound is obtained by reacting 2,3-epoxy-1-propanol
and ethylene oxide with a starting material; to at least one end of a resulting
molecular chain, a polymerizable functional group is linked; and to each of other
ends of said molecular chain, a polymerizable or non polymerizable functional group
is linked.
2. The polyetherpolymer compound according to claim 1, wherein each said polymeric
functional group is one or more selected from the group consisting of (meth) acrylate
-containing groups, allyl and vinyl groups, and each said non-polymeric functional
group is one or more selected from alkyl groups of from 1 to 6 carbons and functional
groups containing boron atoms.
3. An ion conductible polymer composition containing one or more polyether polymer
compounds according to claim 1.
4. An ion conductible polymer composition containing one or more polyether polymer
compounds according to claim 1 and an electrolytic salt.
5. The ion conductible polymer composition according to claim 4, further containing
at least one non-aqueous solvent.
6. The ion conductible polymer composition according to any one of 5, wherein
said polyether polymer compounds are crosslinked.
7. An electrochemical device comprising the ion conductible polymer composition
according to any one of 5.
8. An electrochemical device comprising the ion conductible polymer composition
according to claim 6.
9. The polyether polymer compound according to 2, wherein said starting material
is a compound having one of: at least one active hydrogen residue, and an alkoxide.
10. The polyether polymer compound according to 2, wherein said polymerizable
functional group is a (meth)acrylate-containing group; and said non-polymerizable
functional group is an alkyl group having from 1 to 6 carbon atoms.
Description
BACKGROUND OF INVENTION
1. Field of the Invention
The present invention relates to novel polyether polymer compounds as well as
ion conductible polymer compositions and electrochemical devices using the same.
2. Description of the Related Art
Straight polyether, for example, polyethylene oxide has been known to exhibit
ion conductance by dissolving an electrolytic salt. However, it does not satisfy
a performance requirement as a material for ion conductible polymer compositions
due to its low ion conductance.
Thus, an effort to increase ion conductance has been attempted by using polymers
having side chains obtained by separately synthesizing monomers capable of becoming
side chains at polymerization and copolymerizing the monomers.
The polyether having such side chains exhibits higher ion conductance than straight
polyether, but its ion conductivity around room temperature is still low and thus,
improving this is to be the problem.
The invention has been carried out in the light of the above, and provides polyether
polymers capable of improving an ion conductivity around room temperature, as well
as ion conductible polymer compositions and electrochemical devices using the same.
SUMMARY OF THE INVENTION
The polyether polymer compounds of the invention are those having the structure
unit represented by the formula (1) and the structure unit represented by the formula
(2) and/or the structure unit represented by the formula (3), and having polymerizable
functional groups and/or non-polymerizable functional groups at each end of the
molecular chains.
##STR2##
One or more selected from the group consisting of (meth) acrylate residues, aryl
and vinyl groups can be used as the above polymerizable functional groups, and
one or more selected from the group consisting of alkyl groups with carbon atoms
from 1 to 6 and functional groups containing boron atoms can be used as the above
non-polymerizable functional groups.
The ion conductible polymer compositions of the invention are those containing
one or two or more of the above polyether polymer compounds. Or, they are those
containing one or more of the above polyether polymer compounds and an electrolytic
salt. And a non-aqueous solvent can be further contained in the ion conductible
polymer composition.
The above ion conductible polymer compositions include those in which the polyether
polymer compounds are crosslinked.
Further, the electrochemical devices of the invention is obtained by using
any of the above ion conductible polymer compositions.
DESCRIPTION OF THE PREFERRED EMBODIMENT
1. Polyether Polymer Compounds
The polyether polymer compounds of the invention are obtained by reacting ethylene
oxide and 2,3-epoxy-1-propanol with the starting material, or reacting 2,3-epoxy-1-propanol
with ethylene glycol as the starting material to yield a polymer compound followed
by introducing polymerizable and/or non-polymerizable functional groups at each
end of a backbone and side chains in the resultant polymer compound.
The compounds having one or more active hydrogen residues and alkoxide can be
used as the starting material.
Examples of active hydrogen residues for the compound having one or more
active hydrogen residues include hydroxyl group, preferably having 1 to 5 active
hydrogen residues. Specific examples of the compounds having one or more active
hydrogen residues include triethyleneglycol monomethylether, ethyleneglycol, glycerine,
diglycerine, pentaerythritol and their derivatives.
Also, specific examples of alkoxide include CH
3ONa, t-BuOK and their derivatives.
The polyether polymer compounds of the invention have the structure unit represented
by the formula (1) as well as the structure unit represented by the formula (2)
and/or the structure unit represented by formula (3). The number of the structure
units represented by formula (1) in one molecule is from 1 to 22800, preferably
from 5 to 11400, and more preferably from 10 to 5700. The number of the structure
units of the formula (2) or (3) (but when both are included, it is the total number)
is from 1 to 13600, preferably from 5 to 6800, and more preferably from 10 to 3400
as well as in one molecule.
##STR3##
Examples of polymerizable functional groups introduced at each molecular
end include (meth) acrylate residues, allyl groups and vinyl groups, and examples
of non-polymerizable functional groups include alkyl groups or functional groups
comprising boron atoms.
As the above alkyl groups, alkyl groups having 1 to 6 carbon atoms are preferable,
ones having 1 to 4 carbon atoms are more preferable, and methyl groups are especially preferable.
Examples of functional groups comprising boron atoms include those represented
by the following formula (4) or (5).
##STR4##
R
11, and R
12 in the formula (4) and R
21,
R
22, and R
23 in the formula (5) may be identical or different,
and each represents hydrogen, halogen, alkyl, alkoxy, aryl, alkenyl, alkynyl, aralkyl,
cycloalkyl, cyano, hydroxyl, formyl, aryloxy, alkylthio, arylthio, acyloxy, sulfonyloxy,
amino, alkylamino, arylamino, carbonamino, oxysulfonylamino, sulfonamide, oxycarbonylamino,
ureide, acyl, oxycarbonyl, carbamoyl, sulfonyl, sulfinyl, oxysulfonyl, sulfamoyl,
carboxylate, sulfonate, phosphonate, heterocyclic, -B(R
a)(R
b),
-OB(R
a)(R
b) or OSi(R
a)(R
b)(R
c).
R
a, R
b and R
c each represents hydrogen, halogen,
alkyl, alkoxy, aryl, alkenyl, alkynyl, aralkyl, cycloalkyl, cyano, hydroxyl, formyl,
aryloxy, alkylthio, arylthio, acyloxy, sulfonyloxy, amino, alkylamino, arylamino,
carbonamino, oxysulfonylamino, sulfonamide, oxycarbonylamino, ureide, acyl, oxycarbonyl,
carbamoyl, sulfonyl, sulfinyl, oxysulfonyl, sulfamoyl, carboxylate, sulfonate,
phosphonate, heterocyclic or derivatives thereof. R
11, and R
12
in the formula (4) and R
21, R
22, and R
23 in
the formula (5) may bind together to form a ring, and the ring may have substituents.
Also, each group may be substituted with substitutable groups. Further, X
+
in the formula (5) represents an alkali metallic ion, and is preferably lithium ion.
The ends of molecular chains in the polyether polymer may be all polymerizable
functional groups, all non-polymerizable functional groups, or may include both.
The average molecular weight (Mw) of the polyether polymer compound of the invention
is not especially limited, but is usually from about 500 to 2 millions, and preferably
from about 1000 to 1.5 millions.
2. Ion Conductible Polymer Composition
The ion conductible polymer composition of the invention contains the above polyether
polymer compounds and an electrolytic salt, and further contains non-aqueous solvents
if necessary.
The types of electrolytic salts are not especially limited Lithium salts, ammonium
salts, phosphonium salts such as (C
2H
5)
4PBF
4,
salts of protonic acids such as sulfuric acid and perchloric acid, salts containing
boron atoms and ionic liquid are able to be used.
Specific examples of lithium salts include LiPF
6, LiClO
4,
LiAsF
6, LICF
3SO
3, LiN(CF
3SO
2)
2,
LiN(C
2F
5SO
2)
2, LiC(CF
3SO
2)
3,
LiCl, LiF, LiBr, LiI and derivatives thereof.
Specific examples of ammonium salts include (CH
3)
4NBF
4,
(CH
3)
4NBr, (CH
3)
4NI, (CH
3)
4NClO
4,
and (C
2H
5)
4NBF
4.
Examples of the salts comprising boron atoms include those represented by
the following formula (6):
##STR5##
wherein R
31, R
32, R
33, and R
34 in
the formula (6) may be identical or different, and each represents hydrogen, halogen,
alkyl, alkoxy, aryl, alkenyl, alkynyl, aralkyl, cycloalkyl, cyano, hydroxyl, formyl,
aryloxy, alkylthio, arylthio, acyloxy, sulfonyloxy, amino, alkylamino, arylamino,
carbonamino, oxysulfonylamino, sulfonamide, oxycarbonylamino, ureide, acyl, oxycarbonyl,
carbamoyl, sulfonyl, sulfinyl, oxysulfonyl, sulfamoyl, carboxylate, sulfonate,
phosphonate, heterocyclic, -B(R
a)(R
b), -OB(R
a)(R
b)
or OSi(R
a)(R
b)(R
c). R
a, R
b and
R
c each represents hydrogen, halogen, alkyl, alkoxy, aryl, alkenyl,
alkynyl, aralkyl, cycloalkyl, cyano, hydroxyl, formyl, aryloxy, alkylthio, arylthio,
acyloxy, sulfonyloxy, amino, alkylamino, arylamino, carbonamino, oxysulfonylamino,
sulfonamide, oxycarbonylamino, ureide, acyl, oxycarbonyl, carbamoyl, sulfonyl,
sulfinyl, oxysulfonyl, sulfamoyl, carboxylate, sulfonate, phosphonate, heterocyclic
or derivatives thereof. R
31, R
32, R
33, and R
34
in the formula (6) may bind together to form a ring, and the ring may have
substituents. Also, each group may be substituted with substitutable groups. Further,
X
+ represents an alkali metallic ion, and is preferably lithium ion.
Specific examples of ionic liquids include pyridine, pyrimidine, pyridazine,
pyrazine, triazine, oxazole, thiazole, imidazole, pyrazole, isooxazole, thiadiazole,
oxadiazole, and quaternary salts of derivatives thereof substituted with substitutable groups.
A concentration of the above electrolytic salt is usually in the range of from
1 to 10000 parts by weight, preferably from 2 to 5000 parts by weight, and more
preferably from 5 to 2000 parts by weight based on 100 parts by weight of the polyether
polymer compound.
One or more selected from the group of non-proton solvents consisting of carbonates,
lactones, ethers, sulfolanes and dioxolanes can be used as the non-aqueous solvent.
A concentration of the electrolytic salt in the non-aqueous solution dissolving
the electrolytic salt in the above non-aqueous solvent is usually in the range
of from 0.01 mol/kg to 10 mol/kg, and preferably from 0.02 mol/kg to 6.0 mol/kg.
The combining ratio of the above polyether polymer composition to the non-aqueous
solution is usually in the range of from 1/99 to 99/1 (weight ratio, the same hereinafter),
preferably from 1/99 to 50/50, and more preferably from 1/99 to 30/70.
3. Electrochemical Devices
The ion conductible polymer composition of the invention is applicable for various
electrochemical devices, and their examples include lithium battery, solar battery
with enhanced coloring matters, fuel battery, and condenser.
4. EXAMPLES
The invention is specifically described by examples below, but the invention
is not limited to the examples.
(1) Synthetic Example of the Polyether Polymer
Synthetic Example 1 (Synthesis of Compound 1)
In a pressure proof container, 9 g of KOH was added to 1 mol of glycerine as a
starting material, the temperature was elevated to 100° C., then the pressure
was reduced to 5 mmHg or less of decompression degree via a vacuum pump, and subsequently
the temperature was elevated to 120° C. A monomer mixture obtained by mixing
20 mol of ethylene oxide and 20 mol of 2,3-epoxy-1-propanol was added thereto,
and reacted at the temperature range of 120±5° C.
After termination of the reaction, 23 mol of t-BuOK was added to the pressure
proof container, conduting alcoholation by elevating the temperature to 120°
C. and reducing the pressure to 5 mmHg or less of decompression degree via the
vacuum pump, and subsequently cooled to 80° C. Further, 23 mol of methyl chloride
was reacted at 80±50° C. After termination of the reaction, excess acid
was eliminated using an absorbent, and subsequently conducting dehydration and
filtration afforded the polyether polymer modified at the ends.
Synthetic Example 2 (Synthesis of Compound 2)
In a pressure proof container, 9 g of KOH was added to 1 mol of triethylene glycol
as a starting material, the temperature was elevated to 100° C., then the
pressure was reduced to 5 mmHg or less of decompression degree via a vacuum pump,
and subsequently the temperature was elevated to 120° C. A monomer mixture
obtained by mixing 10 mol of ethylene oxide and 3 mol of 2,3-epoxy-1-propanol was
added thereto, and reacted at the temperature range of 120±5° C.
After termination of the reaction, 3 mol of t-BuOK was added to the pressure
proof container, conducting alcoholation by elevating the temperature to 102°
C. and reducing the pressure to 5 mmHg or less of decompression degree via the
vacuum pump, and followed by cooling to room temperature. Further, 3 mol of acryloyl
chloride was added, and reacted at room temperature.
Separately, a boron compound was synthesized by reacting biphenyl-2,2′-diol
and borane at a molar ratio at 1:1 in dichloromethane with ice-cooling and subsequently
eliminating dichloromethane under reduced pressure. To the above reaction system,
2 mol of the boron compound was added and reacted at room temperature. Excess acid
was eliminated using an absorbent, and subsequently conducting dehydration and
filtration afforded the polyether polymer modified at the ends.
Synthetic Example 3 (Synthesis of Compound 3)
In a pressure proof container, 9 g of KOH was added to 1 mol of ethylene glycol
as a starting material, the temperature was elevated to 100° C., then the
pressure was reduced to 5 mmHg or less of decompression degree via a vacuum pump,
and subsequently the temperature was elevated to 120° C. Further, 10 mol of
2,3-Epoxy-1-propanol was added, and reacted at the temperature range of 120±5° C.
After termination of the reaction, 12 mol of CH
3OLi was placed in
the pressure proof container, conducting alcoholation by elevating the temperature
to 120° C. and reducing the pressure to 5 mmHg or less of decompression degree
via the vacuum pump, and followed by cooling to room temperature.
Separately, 1,1,1,3,3,3-hexafluoro-2-propanol and borane were reacted
at a molar ratio at 3:1 in dichloromethane at room temperature. To the above reaction
system, 6 mol of the product was added, and further 6 mol of acryloyl chloride
was added, and reacted at room temperature. Purifying using the absorbent, and
dehydrating and filtrating afforded the polyether polymer modified at the ends.
Synthetic Example 4 (Synthesis of Compound 4)
In the pressure proof container, 1 mmol of CH
3ONa as a starting material
and 500 ml of dehydrated toluene were placed, and the temperature was elevated
to 100° C. A monomer mixture obtained by mixing 1 mol of ethylene oxide and
0.6 mol of 2,3-epoxy-1-propanol was added thereto and reacted at the temperature
range of 100±5° C.
After termination of the reaction, 0.603 mol of t-BuOK was dissolved in a 10-fold
quantity of t-BuOH and placed in the pressure proof container to alcoholate, the
temperature was elevated to 60° C., and 0.603 mol of acryloyl chloride was
reacted at room temperature. After termination of the reaction, purifying using
the absorbent and eliminating the solvent under reduced pressure afforded the polyether
polymer modified at the ends.
Synthetic Example 5 (Synthesis of Compound 5)
In the pressure proof container, 9 g of KOH was added to 1 mol of triethyleneglycol
monomethyl ether as a starting material, the temperature was elevated to 100°
C., then the pressure was reduced to 5 mmHg or less of decompression degree via
a vacuum pump, and subsequently the temperature was elevated to 120° C. A
monomer mixture obtained by mixing 30 mol of ethylene oxide and 50 mol of 2,3-epoxy-1-propanol
was added thereto, and reacted at the temperature range of 120±5° C.
After termination of the reaction, 30 mol of t-BuOK was added to the pressure
proof container, conducting alcoholation by elevating the temperature to 120°
C. and reducing the pressure to 5 mmHg or less of decompression degree via the
vacuum pump, and followed by cooling to 80° C. Further, 20 mol of Butyl chloride
was reacted at 80±5° C. and cooled to room temperature.
Separately, a boron compound was synthesized by reacting catechol and
borane at a molar ratio of 1:1 in dichloromethane with ice-cooling and eliminating
dichloromethane under reduced pressure. To the above reaction system, 21 mol of
the boron compound was added, and reacted at room temperature. Further, 10 mol
of acryloyl chloride was added and reacted at room temperature for 2 hours. After
termination of the reaction, excess acid was eliminated using the absorbent, and
subsequently conducting dehydration and filtration afforded the polyether polymer
modified at the ends.
Synthetic Example 6 (Synthesis of Compound 6)
The polyether polymer modified at the ends was synthesized by the same technique
as that of Compound 4 except that the type and quantity of the compounds described
in Table 1 were used.
Synthetic Example 7 (Synthesis of Compound 7)
The polyether polymer modified at the ends was synthesized by the same technique
as that of Compound 1 except that the type and quantity of the compounds described
in Table 1 were used.
Synthetic Example 8 (Synthesis of Compound 8)
The polyether polymer modified at the ends was synthesized by the same technique
as that of Compound 1 except that the type and quantity of the compounds described
in Table 1 were used.
Synthetic Example 9 (Synthesis of Compound 9)
The polyether polymer modified at the ends was synthesized by the same technique
as that of Compound 4 except that the type and quantity of the compounds described
in Table 1 were used.
Synthetic Example 10 (Synthesis of Compound 10)
The polyether polymer modified at the ends was synthesized by the same technique
as that of Compound 4 except that the type and quantity of the compounds described
in Table 1 were used.
| TABLE 1 |
| |
|
Ethylene |
2,3-epoxy-1- |
Alcoholation |
|
| |
Starting |
oxide |
propanol |
reagent |
Compound for modification of |
| |
material |
(mol) |
(mol) |
(type/mol) |
the ends (type/mol) |
| |
| Compound 1 |
glycerine |
20 |
20 |
t-BuOK/23 |
Methyl chloride/23 |
| Compound 2 |
Triethylene |
10 |
3 |
t-BuOK/3 |
Acryloyl chloride/3 |
| |
glycol |
|
|
|
2,2-biphenyldioleate borane/2 |
| Compound 3 |
Ethylene |
0 |
10 |
CH3OLi/12 |
Tris(1,1,1,3,3,3,- |
| |
glycol |
|
|
|
hexafluoroisopropyl) borate/6 |
| |
|
|
|
|
Acryloyl chloride/6 |
| Compound 4 |
CH3ONa |
1 |
0.6 |
t-BuOK/0.603 |
Acryloyl chloride/0.603 |
| |
|
|
|
(t-BuOH solution) |
| Compound 5 |
Triethylene- |
30 |
50 |
t-BuOK/30 |
Butyl chloride/20 |
| |
glycol |
|
|
|
Allyl chloride/10 |
| |
monomethyl- |
|
|
|
Catecholate borane/21 |
| |
ether |
| Compound 6 |
t-BuOK |
22 |
6 |
t-BuOK/6.001 |
Propyl chloride/5 |
| |
|
|
|
(t-BuOH solution) |
Acryloyl chloride/1.001 |
| Compound 7 |
Diglycerine |
50 |
30 |
t-BuOK/34 |
Hexyl bromide/32 |
| |
|
|
|
|
Vinyl chloride/2 |
| Compound 8 |
pentaerythritol |
100 |
100 |
t-BuOK/105 |
Methyl chloride/75 |
| |
|
|
|
|
Allyl chloride/30 |
| Compound 9 |
CH3ONa |
10 |
1 |
t-BuOK/1.001 |
Ethyl chloride/0.2 |
| |
|
|
|
(t-BuOH solution) |
Allyl chloride/0.801 |
| Compound 10 |
t-BuOK |
2 |
13 |
t-BuOK/13.001 |
Methyl chloride/12.001 |
| |
|
|
|
(t-BuOH solution) |
Vinyl chloride/1 |
(2) Preparation and Evaluation of the Ion Conductible Polymer Composition
The polyether polymer compound of the invention is usable for electrochemical
devices with various intended uses utilizing the properties of ion conductance.
In the following examples and comparative examples, ion conductance of the ion
conductible polymer composition using this polyether polymer compounds was evaluated
using lithium salt as an electrolytic salt.
Ion conductance of the ion conductible polymer composition was evaluated by making
a film of 500 μm in thickness from each ion conductible polymer composition,
punching out the film at 13φ which is sandwiched with 2 sheets of lithium
metal punched out at 13φ, measuring a resistant value of the ion conductible
polymer composition at 20° C. by the complex impedance method, and estimating
an ion conductivity from the resistant value.
Example 1
The ion conductible polymer composition of 500 μm in thickness was obtained
by dissolving 2 g of Compound 1, 8 g of Compound 2, 2 g of LiI and 0.1 g of AIBN
in 1 g of acetonitrile, which solution was poured between the glass plates, and
subsequently drying under vacuum at 80° C. for 4 hours.
Examples 2 to 4
The ion conductible polymer composition was obtained as is the case with Example
1 except that the type and quantity of the compounds and salts described in Table
2 were used.
Example 5
The ion conductible polymer composition of 500 mm in thickness was obtained by
mixing and dissolving 1 g of Compound 4, 2.7 g of Li[CF
3SO
2)
2N],
9 g of γ-butyrolactone and 0.1 g of AIBN, which solution was poured between
the glass plates, and subsequently leaving at 80° C. under an argon atmosphere
for 2 hours.
Examples 6 to 8
The ion conductible polymer composition was obtained as is the case with Example
5 except that the type and quantity of the compounds, salt and non-aqueous solvents
in Table 2 were used.
Comparative Example 1
The ion conductible polymer composition was obtained as is the case with Example
1 except that the type and quantity of the compound and salt in Table 2 were used.
Comparative Example 2
The ion conductible polymer composition was obtained as is the case with Example
5 except that the type and quantity of the compound, salt and non-aqueous solvent
in Table 2 were used.
The type and quantity of the compounds, salts and non-aqueous solvents as well
as the ion conductivity in the above examples and comparative examples are shown
in Table 2.
The abbreviations for the non-aqueous solvents in Table 2 denote the followings,
respectively; GBL: γ-butylolactone, EC: ethylene carbonate, DEC: diethylene
carbonate, PC: propylene carbonate.
| TABLE 2 |
| |
|
Electrolytic salt |
Non-aqueous |
Ion |
| |
Compound (type/quantity) |
(type/quantity) |
solvent (type/quantity) |
conductivity (S/cm) |
| Example 1 |
Compound 1/2 g + Compound 2/8 g |
LiI/2 g |
- |
1 × 10-;4 |
| Example 2 |
Compound 3/5 g + Compound 6/5 g |
LiBF4/0.5 g |
- |
3 × 10-;4 |
| Example 3 |
Compound 5/10 g |
LiPF4/3 g |
- |
2 × 10-;4 |
| Example 4 |
Compound 8/10 g |
LiClO4/1 g |
- |
1 × 10-;4 |
| Example 5 |
Compound 4/1 g |
Li[CF3SO2)2N]/2.7 g |
GBL/9 g |
3.0 × 10-;3 |
| Example 6 |
Compound 7/1 g |
LiBF4/0.5 g |
EC/2 g + GBL/6 g |
1.7 × 10-;3 |
| Example 7 |
Compound 9/1 g |
LiPF4/3 g |
EC/2 g + GBL/5 g + DEC/1 g |
2.5 × 10-;3 |
| Example 8 |
Compound 10/1 g |
LiClO4/1 g |
PC/3 g + GBL/3 g |
2.0 × 10-;3 |
| Comparative |
PEO with molecular weight of |
Li[CF3SO2)2N]/3 g |
- |
9 × 10-;7 |
| Example 1 |
150,000/10 g |
| Comparative |
PEO with molecular weight of |
LiBF4/1 g |
GBL/9 g |
Incapable |
| Example 2 |
150,000/1 g |
|
|
measurement |
The ion conductible polymer composition of the invention using polyether polymer(s)
exhibits a high ion conductivity in room temperature and is suitably used for various
electrochemical devices using ion conductible polymer compositions.
*
