JP6651219B2 - リチウム−硫黄電池およびこれを含む電池モジュール - Google Patents
リチウム−硫黄電池およびこれを含む電池モジュール Download PDFInfo
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Description
[実施例1]
316Stainless steel集電体上にリチウム金属層を形成した後、高密度ポリエチレン(HDPE)を含む絶縁膜用組成物を製造して、リチウム金属層に図11の形態に絶縁膜を形成して、アノードを製造した。
316Stainless steel集電体上にリチウム金属層を形成した後、絶縁膜を形成しないアノードを製造した。
担持実験
図16のように、実験例1または比較例1のアノードを、硫黄カソード、PP(Polypropylene)ガスケット、およびポリエチレン分離膜と共にリチウム−硫黄電池を構成した。これに、電解液(TEGDME:DOL:DME1:1:1、v/v、1.0M LiTFSI、0.1M LiNO3)を注入して担持実験を進行させた。(TEGDME:DOL:DME=Tetraethylene glycol dimethyl ether:Dioxolane:Dimethoxy ethane)
前記リチウム−硫黄電池に電解液を注入し、10日経過後、それぞれの電池は下記図23のような変化を示した。
Li2S4:黄色
Li2S4+Li2S3:緑色
Li2S3:青色
前記実験例1中、比較例1のアノードを適用したリチウム−硫黄電池の担持時間に応じた電解液の色変化を観察して、その結果を図24に示した。
自発的リチウムポリサルファイド形成実験1(Li−Sシャーレ電池)
前記比較例1で製造されたアノードを用いて、シャーレの底に図12のように設け、電解液(TEGDME:DOL:DME(1:1:1、v/v)、1M LiTFSI、0.1M LiNO3)を注入して、分離膜のないリチウム−硫黄電池を製造した。(TEGDME:DOL:DME=Tetraethylene glycol dimethyl ether:Dioxolane:Dimethoxy ethane)
電池を駆動させた結果、図13に示されているように、リチウム金属のみある場合、何ら変化がないが、アノード集電体上にリチウム金属を形成した比較例1のアノードは、アノード集電体とリチウム金属層との境界でリチウムポリサルファイドの形成が活発に現れることが分かる。
自発的リチウムポリサルファイド形成実験2(Li−Sシャーレ電池)
前記比較例1で適用されたアノードを用いて、シャーレの底に図14のようにシャーレ電池を構成し、電解液(TEGDME;Tetraethylene glycol dimethyl ether)を注入して分離膜のないリチウム−硫黄電池を製造した。澄んだ電解液中で色の変化(Li2S6:赤色、Li2S4:黄色)を観察して、リチウムポリサルファイドの発生の有無および発生サイト(site)を観察した。
20:アノード集電体のリチウム金属層が備えられた面中のリチウム金属層と接しない表面
30:リチウム金属層の側面
40:リチウム金属層の角
100:絶縁膜
Claims (6)
- アノード集電体および該アノード集電体上に備えられたリチウム金属層を含むアノードと、
硫黄含有物質を含むカソードと、
前記アノードおよびカソードの間に備えられた電解質と、
前記アノード集電体とリチウム金属層との接する境界線を覆うように備えられた絶縁膜とを含み、
前記絶縁膜が、前記リチウム金属層の全体表面の面積中の90%以下を覆い、
前記絶縁膜の絶縁抵抗は、106Ω・m以上であり、
前記絶縁膜の厚さは、1nm以上5μm以下である、リチウム−硫黄電池。 - 前記絶縁膜は、前記アノード集電体とリチウム金属層との接する境界線、および前記アノード集電体のリチウム金属層が備えられた面中のリチウム金属層と接しない表面上に備えられたものである、請求項1に記載のリチウム−硫黄電池。
- 前記絶縁膜は、前記アノード集電体とリチウム金属層との接する境界線、前記アノード集電体のリチウム金属層が備えられた面中のリチウム金属層と接しない表面、およびリチウム金属層の側面を覆うように備えられたものである、請求項1に記載のリチウム−硫黄電池。
- 前記絶縁膜は、前記アノード集電体とリチウム金属層との接する境界線、前記アノード集電体のリチウム金属層が備えられた面中のリチウム金属層と接しない表面、リチウム金属層の側面、およびリチウム金属層の角を覆うように備えられたものである、請求項1に記載のリチウム−硫黄電池。
- 前記絶縁膜は、酸化セラミック系絶縁物質および窒化セラミック系絶縁物質のうちの少なくとも1つを含むものである、請求項1に記載のリチウム−硫黄電池。
- 請求項1〜5のいずれか1項に記載のリチウム−硫黄電池を単位電池として含む電池モジュール。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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KR20140128999 | 2014-09-26 | ||
KR10-2014-0128999 | 2014-09-26 | ||
PCT/KR2015/009533 WO2016047942A1 (ko) | 2014-09-26 | 2015-09-10 | 리튬-황 전지 및 이를 포함하는 전지 모듈 |
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JP2017529666A JP2017529666A (ja) | 2017-10-05 |
JP6651219B2 true JP6651219B2 (ja) | 2020-02-19 |
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US (1) | US10615462B2 (ja) |
EP (1) | EP3200268B1 (ja) |
JP (1) | JP6651219B2 (ja) |
KR (1) | KR101699175B1 (ja) |
CN (1) | CN106716702B (ja) |
WO (1) | WO2016047942A1 (ja) |
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EP3457483B1 (en) | 2016-11-28 | 2020-11-04 | LG Chem, Ltd. | Cathode active material for lithium-sulfur battery, comprising metal sulfide nanoparticles, and method for producing same |
KR102138693B1 (ko) | 2017-07-11 | 2020-07-28 | 한양대학교 산학협력단 | 전해질 및 이를 포함하는 리튬 황 전지 |
KR102423680B1 (ko) | 2017-09-08 | 2022-07-21 | 삼성디스플레이 주식회사 | 표시 장치 |
KR102722632B1 (ko) | 2017-10-27 | 2024-10-28 | 주식회사 엘지에너지솔루션 | 리튬 금속 음극 구조체의 제조방법 및 리튬 금속 음극 구조체 |
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WO2020251295A1 (ko) * | 2019-06-14 | 2020-12-17 | 주식회사 엘지화학 | 바이폴라 리튬 이차전지 |
KR102663587B1 (ko) * | 2019-06-14 | 2024-05-03 | 주식회사 엘지에너지솔루션 | 바이폴라 리튬 이차전지 |
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KR101417347B1 (ko) * | 2012-09-24 | 2014-07-08 | 현대자동차주식회사 | 유황 다공성 도전재 나노복합체를 함유한 리튬유황 이차전지용 양극 및 그 제조방법 |
EP3017491B1 (en) * | 2013-07-03 | 2018-11-28 | Sion Power Corporation | Ceramic/polymer matrix for electrode protection in electrochemical cells, including rechargeable lithium batteries |
CN103985840A (zh) * | 2014-06-04 | 2014-08-13 | 中国科学院上海硅酸盐研究所 | 一种具有功能性保护层的锂负极及锂硫电池 |
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US10615462B2 (en) | 2020-04-07 |
JP2017529666A (ja) | 2017-10-05 |
EP3200268B1 (en) | 2019-07-10 |
US20170301962A1 (en) | 2017-10-19 |
CN106716702B (zh) | 2019-12-06 |
WO2016047942A1 (ko) | 2016-03-31 |
KR20160037079A (ko) | 2016-04-05 |
CN106716702A (zh) | 2017-05-24 |
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