CN1464002A - Comb shaped polysiloxane and solid electrolyte produced therefrom and process for preparing the same - Google Patents
Comb shaped polysiloxane and solid electrolyte produced therefrom and process for preparing the same Download PDFInfo
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- CN1464002A CN1464002A CN 02123211 CN02123211A CN1464002A CN 1464002 A CN1464002 A CN 1464002A CN 02123211 CN02123211 CN 02123211 CN 02123211 A CN02123211 A CN 02123211A CN 1464002 A CN1464002 A CN 1464002A
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Abstract
The present invention discloses one kind of comb-shaped polysiloxane, the solid polymer electrolyte prepared with the comb-shaped polysiloxane and its preparation. The comb-shaped polysiloxane has grafted low-molecular weight polyoxyethylene side chain on its main chain and quaternary ammonium salt side chain with iodine ion in the end, with the quaternary ammonium salt side chains accounting for 10-100 mol% of total side chains. The solid polymer electrolyte consists of the comb-shaped polysiloxane 1 weight portion, polar small molecular weight plasticizer 0.5-8 weight portions and supporting polymer carrier 0.075-2.5 weight portions. The solid polymer electrolyte has ionic conductivity up to 0.001 S/cm at room temperature and conductive iodine ion only, and may be used in dye sensitized solar cell.
Description
Technical field:
The present invention relates to a kind of comb shaped polysiloxane and copolymer solid electrolyte prepared therefrom and preparation method, this ionogen has the advantage of single anion conductivity, ionic conductance height and good film-forming property, is expected to replace traditional liquid electrolyte in dye sensitization solar battery.
Background technology:
Copolymer solid electrolyte is a kind of novel solid electrolyte that in recent years develops rapidly, can be used to make the high hull cell of space availability ratio, can overcome the leakage problem of electrolytic solution, the working life that can prolong battery.Solid State Ionic, 2001, V.140,327 reported a kind of by ethylene oxide and chloromethyl oxirane, NaI and I
2The copolymer solid electrolyte material of forming, its room-temperature ion conductivity reaches 1.5 * 10
-5S/cm can be used for all-solid-state dye-sensitized solar cell.But this system is a kind of double ion conductor, and promptly the yin, yang ion participates in ionic conduction simultaneously, therefore can produce the direct current polarization problem.Single ion conductor is with a kind of being connected on the main polymer chain in the yin, yang ion, makes it can not free migration, and corresponding ion plays the ionic conduction effect.The ionic conductance of discovering single ion conductor changes steadily in time, and discharging current is stable.In single ion conductor, owing to have only a kind of movable ion, and the difficult disassociation of general polymerization thing salt, so its ionic conductance is generally low than double ion conductor.Macromolecules, 1993,26,2202 have reported a kind of single ion conductor, be characterized in grafting lower molecular weight polyethylene oxide side-chain and sulfonate groups on polysiloxane backbone, the room-temperature ion conductivity of system brought up to 2 * 10 by adding the small molecules solvent
-5S/cm.But what play the ionic conduction effect in this system is positively charged ion, so its range of application mainly is limited to field of lithium ion secondary, and this system at room temperature is in a liquid state in addition, can't film forming.
Summary of the invention:
The objective of the invention is to overcome that electrolyte system has the double ion conductivity in the above-mentioned prior art, ionic conductance is on the low side, the defective of film-forming properties and poor mechanical property, and a kind of comb shaped polysiloxane and copolymer solid electrolyte prepared therefrom have been proposed, the preparation of polymer solid electrolyte that adopts a step casting film is provided simultaneously.
A kind of comb shaped polysiloxane of the present invention is grafted with lower molecular weight polyethylene oxide side-chain and end and has the anionic quaternary ammonium salt side chain of iodine on its main chain, quaternary ammonium salt side chain (QAS) accounts for 10%～100% of the total molecular fraction of side chain.The structural formula of this comb shaped polysiloxane (PSQAS) is as follows:
In above-mentioned chemical structural formula, R
1For molecular weight is that 350～800 polyethylene oxide side-chain (also is (CH
2)
3O (CH
2CH
2O)
xCH
3); R
2For end has the anionic quaternary ammonium salt side chain of iodine (also is (CH
2)
3N
+(CH
3)
3I
-); M+n=25～200; N/ (m+n) * 100%=10～100%.
The above-mentioned end that grafts on the quaternary ammonium salt side chain on the comb shaped polysiloxane main chain is the iodate tetra-allkylammonium.
Comb shaped polysiloxane of the present invention is by the polymethyl hydrogen siloxane (M that contains 1 molar part repeating unit
w=1500～12000) and the allyl polyglycol monomethyl ether (M of 0～0.9 molar part
w=350～800), the N of 0.15～1.5 molar part, the N-DMAA carries out quaterisation with the methyl iodide of 1.5～15 molar part and obtains after the addition of silicon hydrogen.
By a kind of copolymer solid electrolyte of above-mentioned comb shaped polysiloxane preparation, by weight, form by following component and content:
1 part of comb shaped polysiloxane
0.5～8 part in polarity small molecules softening agent
0.075～2.5 part in polymer support carrier
Described polarity small molecules softening agent comprises: NSC 11801 (EC), propylene carbonate (PC), diethyl carbonate (DEC), methylcarbonate (DMC), carbonic acid methylethyl ester (EMC), gamma-butyrolactone (γ-BL), N, dinethylformamide (DMF), dimethyl sulfoxide (DMSO) (DMSO) or their arbitrary proportion mixture.Preferred NSC 11801 (EC), propylene carbonate (PC) or their arbitrary proportion mixture.
Described polymer support carrier comprises polyoxyethylene (PEO), vinylidene and hexafluoropropylene copolymer (PVdF-HFP) or polyacrylonitrile (PAN), and the weight-average molecular weight of described polyoxyethylene (PEO) is 1 * 10
5～1 * 10
7
A kind of copolymer solid electrolyte of the present invention is made up of above-mentioned three components, makes through a step casting film.Lower molecular weight polyethylene oxide side-chain in the comb shaped polysiloxane improves the consistency of system, and end has the anionic quaternary ammonium salt side chain of iodine provides negatively charged ion; Polarity small molecules softening agent promotes the disassociation and the ion transport of quaternary ammonium salt; High molecular polyoxyethylene, vinylidene and hexafluoropropylene copolymer or polyacrylonitrile are as the prop carrier of dielectric film.The room-temperature ion conductivity of copolymer solid electrolyte of the present invention is up to 10
-3S/cm.
Preparation of polymer solid electrolyte of the present invention, adopt the single stage method casting film, carry out as follows: a. is with comb shaped polysiloxane 1 weight part, polarity small molecules softening agent 0.5～8 weight part, polymer support carrier 0.075～2.5 weight part, acetonitrile 40～80 weight parts mix, stirring makes it dissolving, behind the generation homogeneous liquid; B. homogeneous liquid is cast in the tetrafluoroethylene mould, places 20～30 ℃ of following evaporations to remove acetonitrile, obtain electrolytic thin-membrane; C. electrolytic thin-membrane is placed the moisture eliminator drying that fills Vanadium Pentoxide in FLAKES to get final product, generally place time of drying more than 48 hours.
The copolymer solid electrolyte of the present invention preparation has been obtained following invention effect: 1. single stage method casting film, and technology is simple; 2. solid electrolyte film has good film-forming properties and mechanical property; 3. having only the iodine negatively charged ion to carry out ionic conduction, is a kind of single ion conductor.The present invention can be applied in the dye sensitization solar battery.
Embodiment:
Embodiment 1
Polymethyl hydrogen siloxane (the M that will contain the 0.01mol repeating unit
w=2200) and 0.007mol allyl polyglycol monomethyl ether (M
w=390) be dissolved in the 25mL toluene.Under nitrogen protection, be warming up to 60 ℃, add the dichloromethane solution (1mg/mL) of 0.5mL dicyclopentadiene platinum chloride.Be warming up to 90 ℃, reaction 24h.Add 0.0045mol N then, the dichloromethane solution (1mg/mL) of N-DMAA and 4.8mL dicyclopentadiene platinum chloride continues reaction 24h.Rotary evaporation is removed toluene and excessive N, and the N-DMAA obtains little yellow thick liquid.Above-mentioned thick liquid is dissolved in the 25mL ethanol, adds the methyl iodide of 0.03mol, react 24h down at 40 ℃.Rotary evaporation is removed ethanol and excessive methyl iodide, obtains the QAS molecular fraction and be 30% PSQAS.
Embodiment 2
Polymethyl hydrogen siloxane (the M that will contain the 0.01mol repeating unit
w=2200) and 0.005mol allyl polyglycol monomethyl ether (M
w=390) be dissolved in the 25mL toluene.Under nitrogen protection, be warming up to 60 ℃, add the dichloromethane solution (1mg/mL) of 0.5mL dicyclopentadiene platinum chloride.Be warming up to 90 ℃, reaction 24h.Add 0.0075molN then, the dichloromethane solution (1mg/mL) of N-DMAA and 4.8mL dicyclopentadiene platinum chloride continues reaction 24h.Rotary evaporation is removed toluene and excessive N, and the N-DMAA obtains little yellow thick liquid.Above-mentioned thick liquid is dissolved in the 25mL ethanol, adds the methyl iodide of 0.05mol, react 24h down at 40 ℃.Rotary evaporation is removed ethanol and excessive methyl iodide, obtains the QAS molecular fraction and be 50% PSQAS.
Embodiment 3
Polymethyl hydrogen siloxane (the M that will contain the 0.01mol repeating unit
w=2200) and 0.015molN, the N-DMAA is dissolved in the 25mL toluene.Under nitrogen protection, be warming up to 60 ℃, add the dichloromethane solution (1mg/mL) of 5.3mL dicyclopentadiene platinum chloride.Be warming up to 90 ℃, reaction 24h.Rotary evaporation is removed toluene and excessive N, and the N-DMAA obtains little yellow thick liquid.Above-mentioned thick liquid is dissolved in the 25mL ethanol, adds the methyl iodide of 0.1mol, react 24h down at 40 ℃.Rotary evaporation is removed ethanol and excessive methyl iodide, obtains the QAS molecular fraction and be 100% PSQAS.
Embodiment 4
With the PSQAS among the 0.5g embodiment 2 (the QAS molecular fraction is 50%), 1g PC, 0.5gPEO (molecular weight 400,000) join in the 100mL single port flask; Add the 60g acetonitrile, induction stirring made it to dissolve fully in 4 hours, generated homogeneous liquid; Be cast to then in the tetrafluoroethylene mould, place 30 ℃ slowly to evaporate down, obtain electrolytic thin-membrane except that desolvating; Place the interior placement of the moisture eliminator that fills Vanadium Pentoxide in FLAKES after 48 hours electrolytic thin-membrane, obtain specimen, carry out the ionic conductance test.
This system room-temperature ion conductivity is 2.7 * 10
-5S/cm.
Embodiment 5
With the PSQAS among the 0.5g embodiment 2 (the QAS molecular fraction is 50%), 0.5g PC, 0.5gEC, 0.5g PEO (molecular weight 400,000) joins in the 100mL single port flask; Add the 60g acetonitrile, induction stirring made it to dissolve fully in 4 hours, generated homogeneous liquid; Be cast to then in the tetrafluoroethylene mould, place 30 ℃ slowly to evaporate down, obtain electrolytic thin-membrane except that desolvating; Place the interior placement of the moisture eliminator that fills Vanadium Pentoxide in FLAKES after 48 hours electrolytic thin-membrane, obtain specimen, carry out the ionic conductance test.
This system room-temperature ion conductivity is 4.39 * 10
-5S/cm than embodiment 1 height, illustrates under the identical condition of plasticizer consumption, uses the PC/EC plastic binder that the room-temperature ion conductivity can further be provided.
Embodiment 6
With the PSQAS among the 0.3g embodiment 1 (the QAS molecular fraction is 30%), 1g PC, 0.7gPEO (molecular weight 400,000) join in the 100mL single port flask; Add the 60g acetonitrile, induction stirring made it to dissolve fully in 4 hours, generated homogeneous liquid; Be cast to then in the tetrafluoroethylene mould, place 30 ℃ slowly to evaporate down, obtain electrolytic thin-membrane except that desolvating; Place the interior placement of the moisture eliminator that fills Vanadium Pentoxide in FLAKES after 48 hours electrolytic thin-membrane, obtain specimen, carry out the ionic conductance test.
This system room-temperature ion conductivity is 4.21 * 10
-5S/cm.
Embodiment 7
With the PSQAS among the 0.18g embodiment 2 (the QAS molecular fraction is 50%), 0.28g PC, 1.12g EC, 0.42g PEO (molecular weight 400,000) join in the 100mL single port flask; Add the 60g acetonitrile, induction stirring made it to dissolve fully in 4 hours, generated homogeneous liquid; Be cast to then in the tetrafluoroethylene mould, place 30 ℃ slowly to evaporate down, obtain electrolytic thin-membrane except that desolvating; Place the interior placement of the moisture eliminator that fills Vanadium Pentoxide in FLAKES after 48 hours electrolytic thin-membrane, obtain specimen, carry out the ionic conductance test.
This system room-temperature ion conductivity is 1.87 * 10
-4S/cm.
Embodiment 8
With the PSQAS among the 1.0g embodiment 3 (the QAS molecular fraction is 100%), 0.2g PC, 0.8g EC, 0.1g PAN (molecular weight 150,000) join in the 100mL single port flask; Add the 60g acetonitrile, induction stirring made it to dissolve fully in 8 hours, generated homogeneous liquid; Be cast to then in the tetrafluoroethylene mould, place 30 ℃ slowly to evaporate down, obtain electrolytic thin-membrane except that desolvating; Place the interior placement of the moisture eliminator that fills Vanadium Pentoxide in FLAKES after 48 hours electrolytic thin-membrane, obtain specimen, carry out the ionic conductance test.
This system room-temperature ion conductivity is 1.49 * 10
-3S/cm.
Claims (6)
1. comb shaped polysiloxane, its structural formula is as follows:
Wherein, R
1It for molecular weight 350～800 polyethylene oxide side-chain; R
2For end has the anionic quaternary ammonium salt side chain of iodine; M+n=25～200; N/ (m+n) * 100%=10～100%.
2. copolymer solid electrolyte, by weight, form by following component and content:
1 part of comb shaped polysiloxane
0.5～8 part in polarity small molecules softening agent
0.075～2.5 part in polymer support carrier
3. according to the copolymer solid electrolyte of claim 2, it is characterized in that: described polymer support carrier is polyoxyethylene, vinylidene and hexafluoropropylene copolymer or polyacrylonitrile, and the weight-average molecular weight of described polyoxyethylene is 1 * 10
5～1 * 10
7
4. according to the copolymer solid electrolyte of claim 2, it is characterized in that: described polarity small molecules softening agent is NSC 11801, propylene carbonate, diethyl carbonate, methylcarbonate, carbonic acid methylethyl ester, gamma-butyrolactone, N, dinethylformamide, dimethyl sulfoxide (DMSO) or their arbitrary proportion mixture.
5. according to the copolymer solid electrolyte of claim 4, it is characterized in that: described polarity small molecules softening agent is NSC 11801, propylene carbonate or their arbitrary proportion mixture.
6. preparation of polymer solid electrolyte, carry out as follows: a. is with comb shaped polysiloxane 1 weight part, polarity small molecules softening agent 0.5～8 weight part, polymer support carrier 0.075～2.5 weight part, acetonitrile 40～80 weight parts mix, stirring makes it dissolving, behind the generation homogeneous liquid; B. homogeneous liquid is cast in the tetrafluoroethylene mould, places 20～30 ℃ of following evaporations to remove acetonitrile, obtain electrolytic thin-membrane; C. electrolytic thin-membrane is placed the moisture eliminator drying that fills Vanadium Pentoxide in FLAKES to get final product.
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|---|---|---|---|
| CN 02123211 CN1210332C (en) | 2002-06-12 | 2002-06-12 | Comb shaped polysiloxane and solid electrolyte produced therefrom and process for preparing the same |
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|---|---|---|---|
| CN 02123211 CN1210332C (en) | 2002-06-12 | 2002-06-12 | Comb shaped polysiloxane and solid electrolyte produced therefrom and process for preparing the same |
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| CN1210332C CN1210332C (en) | 2005-07-13 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411060C (en) * | 2005-04-01 | 2008-08-13 | 中国科学院化学研究所 | Fused-salt type oligomer electrolyte and its use |
| CN100423314C (en) * | 2005-09-01 | 2008-10-01 | 复旦大学 | Dye sensitization nanocrystalline solar battery based on dendroid compounds and its preparing method |
| CN100544054C (en) * | 2007-06-26 | 2009-09-23 | 武汉大学 | The preparation method of modified polymer electrolyte dye-sensitized nano-crystalline solar battery |
| CN103421190A (en) * | 2013-07-23 | 2013-12-04 | 中南大学 | Comb polysilicone and solid electrolyte, preparation method and application thereof |
| CN104183869A (en) * | 2014-08-25 | 2014-12-03 | 江苏明魁高分子材料技术有限公司 | Lithium single ionic conductive microporous electrolyte membrane and preparation method thereof |
| CN106549187A (en) * | 2016-10-27 | 2017-03-29 | 浙江大学 | A kind of dielectric film containing amphion full solid state polymer and its production and use |
| CN107851837A (en) * | 2015-07-30 | 2018-03-27 | 莫门蒂夫性能材料股份有限公司 | Silicone copolymers and the solid polymer electrolyte for including this silicone copolymers |
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| CN113659140A (en) * | 2014-04-01 | 2021-11-16 | 离子材料公司 | Solid ion-conducting polymer, cathode comprising the same, and battery comprising the cathode |
| CN114006030A (en) * | 2021-09-15 | 2022-02-01 | 云南大学 | Electrolyte and preparation method and application thereof |
| CN114243102A (en) * | 2021-12-15 | 2022-03-25 | 惠州亿纬锂能股份有限公司 | Polysiloxane solid electrolyte, solid battery, preparation method and application thereof |
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2002
- 2002-06-12 CN CN 02123211 patent/CN1210332C/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100411060C (en) * | 2005-04-01 | 2008-08-13 | 中国科学院化学研究所 | Fused-salt type oligomer electrolyte and its use |
| CN100423314C (en) * | 2005-09-01 | 2008-10-01 | 复旦大学 | Dye sensitization nanocrystalline solar battery based on dendroid compounds and its preparing method |
| CN100544054C (en) * | 2007-06-26 | 2009-09-23 | 武汉大学 | The preparation method of modified polymer electrolyte dye-sensitized nano-crystalline solar battery |
| CN103421190A (en) * | 2013-07-23 | 2013-12-04 | 中南大学 | Comb polysilicone and solid electrolyte, preparation method and application thereof |
| CN103421190B (en) * | 2013-07-23 | 2016-03-30 | 中南大学 | A kind of comb shape polysiloxane and solid electrolyte, preparation method and application |
| CN113659140A (en) * | 2014-04-01 | 2021-11-16 | 离子材料公司 | Solid ion-conducting polymer, cathode comprising the same, and battery comprising the cathode |
| CN104183869A (en) * | 2014-08-25 | 2014-12-03 | 江苏明魁高分子材料技术有限公司 | Lithium single ionic conductive microporous electrolyte membrane and preparation method thereof |
| CN104183869B (en) * | 2014-08-25 | 2017-01-25 | 江苏明魁高分子材料技术有限公司 | Lithium single ionic conductive microporous electrolyte membrane and preparation method thereof |
| CN107851837A (en) * | 2015-07-30 | 2018-03-27 | 莫门蒂夫性能材料股份有限公司 | Silicone copolymers and the solid polymer electrolyte for including this silicone copolymers |
| CN107851837B (en) * | 2015-07-30 | 2020-06-02 | 莫门蒂夫性能材料股份有限公司 | Siloxane copolymer and solid polymer electrolyte comprising the same |
| CN106549187A (en) * | 2016-10-27 | 2017-03-29 | 浙江大学 | A kind of dielectric film containing amphion full solid state polymer and its production and use |
| CN106549187B (en) * | 2016-10-27 | 2018-11-02 | 浙江大学 | A kind of dielectric film and its preparation method and application containing amphoteric ion full solid state polymer |
| CN110071327A (en) * | 2019-04-10 | 2019-07-30 | 深圳新宙邦科技股份有限公司 | A kind of solid electrolyte and polymer Li-ion battery |
| US12183883B2 (en) | 2019-04-10 | 2024-12-31 | Shenzhen Capchem Technology Co., Ltd. | Solid electrolyte and polymer lithium ion battery |
| CN114006030A (en) * | 2021-09-15 | 2022-02-01 | 云南大学 | Electrolyte and preparation method and application thereof |
| CN114006030B (en) * | 2021-09-15 | 2022-08-26 | 云南大学 | Electrolyte and preparation method and application thereof |
| CN114243102A (en) * | 2021-12-15 | 2022-03-25 | 惠州亿纬锂能股份有限公司 | Polysiloxane solid electrolyte, solid battery, preparation method and application thereof |
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| CN1210332C (en) | 2005-07-13 |
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