JP6966634B2 - リチウム二次電池用高分子材料及びその製造方法 - Google Patents
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Description
本発明に係るリチウム二次電池用高分子材料は、下記化学式1で表されるポリチオフェン系高分子及び伝導性高分子を含むことができる。
本発明の一実施例に係るブレンド形態の高分子を含むリチウム二次電池用高分子材料は、
(a)下記化学式1で表されるポリチオフェン系高分子を形成する段階;
(b)伝導性高分子を形成する段階;及び
(c)前記ポリチオフェン系高分子と伝導性高分子を熱処理する段階を含むことができる。
(a1)チオフェン酢酸にメタノールと硫酸を入れてチオフェンメチルアセテートを形成する段階;
(a2)前記チオフェンメチルアセテートに塩化鉄を入れてポリチオフェンメチルアセテートを形成する段階;
(a3)前記ポリチオフェンメチルアセテートに水酸化ナトリウムを入れてポリチオフェンナトリウムアセテートを形成する段階;
(a4)前記ポリチオフェンナトリウムアセテートに塩化水素を入れてポリチオフェン酢酸を形成する段階;及び
(a5)前記ポリチオフェン酢酸にポリエチレングリコールを入れてポリ(3−ポリエチレングリコールチオフェン)を形成する段階を含むことができる。
製造例−ポリ(3−ポリエチレングリコールチオフェン)(P3PEGT)の製造
図2は、本発明の一実施例に係る高分子であるP3PEGTの製造方法を示す。
前記製造例で製造したP3PEGTと伝導性高分子でPEDOT:PSS(3wt% in H2O、200S/cm、Sigam−Aldrich社)を80:20の重量比にして、溶媒であるジメチルスルホキシド(DMSO)全体100重量部対比5重量部で溶解して高分子材料溶液を製造した。
高分子としてP3PEGTを単独で用いたことを除いては、前記実施例1と同様にして高分子材料を製造した。
高分子でポリ−3−ヘキシルチオフェン−ポリエチレンオキシドブロック共重合体(P3HT−PEO)をテトラヒドロフラン(THF)溶媒に溶かして溶液を製造したことを除いては、前記実施例と同様にして高分子材料を製造した。
図3は、本発明の一実施例に係るP3PEGTを含む高分子の1H−NMRグラフである。
前記実施例及び比較例で製造した高分子材料の厚さ及び四点プローブ(4−point probe)を用いた高分子材料の面抵抗を測定し、下記数学式(1)を用いて高分子材料の電子伝導度を測定し、その結果を表1に示した。
前記実施例及び比較例でそれぞれ製造した高分子材料の溶液にリチウム塩としてLiTFSIを下記表2の割合で加え、前記実施例及び比較例と同様の方法で高分子材料を製造した。
総伝導度=イオン伝導度+電子伝導性
Claims (9)
- 前記ポリチオフェン系高分子及びポリ−(3,4−エチレンジオキシチオフェン):ポリ(スチレンスルホネート)(PEDOT:PSS)は、95:5〜80:20の重量比で含まれることを特徴とする請求項1に記載のリチウム二次電池固体電解質用高分子材料。
- 前記高分子材料は、10−6〜10−4S/cmのイオン伝導度を有することを特徴とする請求項1または2に記載のリチウム二次電池固体電解質用高分子材料。
- 請求項1乃至3のいずれかに記載の高分子材料を含むリチウム二次電池用固体電解質。
- 請求項4に記載の固体電解質を含むリチウム二次電池。
- 請求項1に記載のリチウム二次電池固体電解質用高分子材料の製造方法において、前記製造方法は、
(a)下記化学式1で表されるポリチオフェン系高分子を形成する段階;
(b)ポリ−(3,4−エチレンジオキシチオフェン):ポリ(スチレンスルホネート)(PEDOT:PSS)を形成する段階;及び
(c)前記ポリチオフェン系高分子とポリ−(3,4−エチレンジオキシチオフェン):ポリ(スチレンスルホネート)(PEDOT:PSS)を熱処理する段階を含むリチウム二次電池固体電解質用高分子材料の製造方法。
- 前記(a)段階は、
(a1)チオフェン酢酸にメタノールと硫酸を入れてチオフェンメチルアセテートを形成する段階;
(a2)前記チオフェンメチルアセテートに塩化鉄を入れてポリチオフェンメチルアセテートを形成する段階;
(a3)前記ポリチオフェンメチルアセテートに水酸化ナトリウムを入れてポリチオフェンナトリウムアセテートを形成する段階;
(a4)前記ポリチオフェンナトリウムアセテートに塩化水素を入れてポリチオフェン酢酸を形成する段階;及び
(a5)前記ポリチオフェン酢酸にポリエチレングリコールを入れてポリ(3−ポリエチレングリコールチオフェン)を形成する段階を含むことを特徴とする請求項6に記載のリチウム二次電池固体電解質用高分子材料の製造方法。 - 前記(c)段階において熱処理は、120〜250℃で行われることを特徴とする請求項6または7に記載のリチウム二次電池固体電解質用高分子材料の製造方法。
- 下記化学式1で表されるポリチオフェン系高分子の製造方法において、前記製造方法は、
チオフェン酢酸にメタノールと硫酸を入れてチオフェンメチルアセテートを形成する段階;
前記チオフェンメチルアセテートに塩化鉄を入れてポリチオフェンメチルアセテートを形成する段階;
前記ポリチオフェンメチルアセテートに水酸化ナトリウムを入れてポリチオフェンナトリウムアセテートを形成する段階;
前記ポリチオフェンナトリウムアセテートに塩化水素を入れてポリチオフェン酢酸を形成する段階;及び
前記ポリチオフェン酢酸にポリエチレングリコールを入れてポリ(3−ポリエチレングリコールチオフェン)を形成する段階を含むことを特徴とするポリチオフェン系高分子の製造方法。
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KR101391610B1 (ko) * | 2012-03-29 | 2014-05-07 | 주식회사 누리비스타 | 저항 안정성이 부여된 전도성 고분자 조성물 및 이를 이용한 전도성 필름 |
KR20140065644A (ko) * | 2012-11-19 | 2014-05-30 | 주식회사 엘지화학 | 양극 활물질 조성물 및 이를 포함하는 리튬 이차 전지 |
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KR20140121953A (ko) * | 2013-04-08 | 2014-10-17 | 주식회사 엘지화학 | 리튬 이차전지용 음극, 그 제조방법 및 이를 포함하는 리튬 이차 전지 |
KR101455943B1 (ko) * | 2013-10-17 | 2014-11-04 | 한양대학교 산학협력단 | 이차 전지용 분리막, 그 제조 방법, 및 이를 이용한 이차 전지 |
CN103753926B (zh) * | 2014-01-16 | 2016-03-16 | 中科院广州化学有限公司 | 一种高导电率的聚噻吩导电涂层及其制备方法与应用 |
KR101743909B1 (ko) | 2015-06-11 | 2017-06-08 | 한국과학기술원 | 기계적 안정성 및 효율이 강화된 올-고분자 태양전지용 전도성 고분자 |
KR101748684B1 (ko) | 2015-06-19 | 2017-07-03 | 한국과학기술원 | 폴리머로만 이루어진 광활성층을 이용한 전-고분자 태양전지 |
KR101855569B1 (ko) * | 2016-01-28 | 2018-06-08 | 서울대학교산학협력단 | 이차전지용 활물질 및 그 제조 방법 |
KR20170126604A (ko) | 2016-05-10 | 2017-11-20 | 유한킴벌리 주식회사 | 복강경 수술용 견인 장치 |
US10418630B2 (en) * | 2016-07-14 | 2019-09-17 | Ford Global Technologies, Llc | Lithium-sulfur battery cell electrode |
CN106803574B (zh) * | 2016-12-26 | 2019-09-13 | 宁波中车新能源科技有限公司 | 锂离子电池正极材料及其制备方法和应用 |
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ES2958584T3 (es) | 2024-02-12 |
EP3664199A4 (en) | 2020-11-11 |
CN111033835A (zh) | 2020-04-17 |
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PL3664199T3 (pl) | 2024-01-22 |
JP2020532070A (ja) | 2020-11-05 |
CN111033835B (zh) | 2023-05-09 |
US20200350586A1 (en) | 2020-11-05 |
EP3664199A1 (en) | 2020-06-10 |
EP3664199B1 (en) | 2023-08-30 |
KR102315399B1 (ko) | 2021-10-20 |
HUE064339T2 (hu) | 2024-03-28 |
KR20190037019A (ko) | 2019-04-05 |
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