JP2016219421A - 電池用電解液、および、電池 - Google Patents
電池用電解液、および、電池 Download PDFInfo
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Abstract
Description
実施の形態1における電池用電解液は、非水溶媒と、非水溶媒に溶解したアルカリ金属塩と、を含む。
以下、実施の形態2が説明される。なお、上述の実施の形態1と重複する説明は、適宜、省略される。
[非水電解液の調整]
フルオロエチレンカーボネート(CAS番号:114435−02−8)と1−メチルシクロプロパン−1−カルボン酸メチル(CAS番号:6206−25−3)との混合溶媒(体積比1:4)に、1.0mol/LのLiPF6(CAS番号:21324−40−3)を溶解し、電解液とした。
まず、正極活物質として、Li(Ni,Co,Al)O2を準備した。100重量部の正極活物質に、導電剤のアセチレンブラック5重量部と、結着剤のポリフッ化ビニリデン樹脂5重量部とを混合した。これらを脱水N−メチル−2−ピロリドンに分散させて、スラリー状の正極合剤を調製した。この正極合剤を、厚み15μmのアルミニウム箔からなる正極集電体上に片面だけ塗布した。これを乾燥後、圧延して、正極板を得た。乾燥後の正極合剤塗布量は、10mg/cm2であった。
人造黒鉛粉末98重量部と、スチレンーブタジエンゴム1重量部と、カルボキシメチルセルロース1重量部とを混合した。これらを水に分散させて、スラリー状の負極合剤を調製した。この負極合剤を、厚み10μmの銅箔からなる負極集電体上に、片面だけ塗布した。これを乾燥後、圧延して、負極板を得た。乾燥後の負極合剤塗布量は、6.5mg/cm2であった。
図3は、実施例1における電極板の概略構成を示す図である。
上述の作製した電池を、以下の手順に従って、評価した。
電解液の溶媒に、フルオロエチレンカーボネートとジメチルカーボネートと1−メチルシクロプロパン−1−カルボン酸メチルとの混合溶媒(体積比20:79:1)を用いた。
電解液の溶媒として、フルオロエチレンカーボネートとジメチルカーボネート(CAS番号:616−38−6)との混合溶媒(体積比1:4)を用いた。
電解液の溶媒として、フルオロエチレンカーボネートとメチルアセテート(CAS番号:79−20−9)との混合溶媒(体積比1:4)を用いた。
電解液の溶媒として、フルオロエチレンカーボネートとメチルプロピオネート(CAS番号:554−12−1)との混合溶媒(体積比1:4)を用いた。
電解液の溶媒として、フルオロエチレンカーボネートとピバル酸メチル(CAS番号:598−98−1)との混合溶媒(体積比1:4)を用いた。
1a 正極合剤層
1b 正極集電体
1c 正極タブリード
20 負極
2a 負極合剤層
2b 負極集電体
2c 負極タブリード
30 セパレータ
4 極板群
5 外装
6 絶縁タブフィルム
Claims (12)
- 前記鎖状カルボン酸エステルの前記R1および前記R2は、いずれも、メチル基である、
請求項1に記載の電池用電解液。 - 前記非水溶媒の総体積に対する前記鎖状カルボン酸エステルの割合は、1体積%以上である、
請求項1または2に記載の電池用電解液。 - 前記非水溶媒の総体積に対する前記鎖状カルボン酸エステルの割合は、50体積%以上である、
請求項3に記載の電池用電解液。 - 前記非水溶媒の総体積に対する前記鎖状カルボン酸エステルの割合は、80体積%以上である、
請求項4に記載の電池用電解液。 - 前記非水溶媒は、フルオロエチレンカーボネートを含む、
請求項1から5のいずれかに記載の電池用電解液。 - 前記アルカリ金属塩は、リチウム塩である、
請求項1から6のいずれかに記載の電池用電解液。 - 前記リチウム塩は、LiBF4、LiPF6、LiN(SO2CF3)2、および、LiN(SO2F)2からなる群より選ばれる少なくとも1つである、
請求項7に記載の電池用電解液。 - 請求項1から8のいずれかに記載の電池用電解液と、
アルカリ金属イオンの吸蔵および放出が可能な正極活物質を含む正極と、
前記アルカリ金属イオンの吸蔵および放出が可能な負極活物質またはアルカリ金属を含む負極と、
を備える、
電池。 - 前記負極は、前記アルカリ金属を含み、
前記アルカリ金属は、リチウムである、
請求項9に記載の電池。 - 前記負極は、前記負極活物質を含み、
前記負極活物質は、炭素である、
請求項9または10に記載の電池。 - 前記正極活物質は、ニッケル、コバルト、マンガンからなる群から選ばれる少なくとも1つと、リチウムと、を含む金属酸化物である、
請求項9から11のいずれかに記載の電池。
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Cited By (2)
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JP2019102231A (ja) * | 2017-11-30 | 2019-06-24 | 株式会社Gsユアサ | 蓄電素子 |
KR20190131547A (ko) * | 2017-03-25 | 2019-11-26 | 후아웨이 테크놀러지 컴퍼니 리미티드 | 이중 sim 이중 활성을 구현하는 통신 방법, 및 단말 |
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EP3748758B1 (en) * | 2018-01-31 | 2024-05-22 | Panasonic Intellectual Property Management Co., Ltd. | Non-aqueous electrolyte secondary battery, electrolyte solution, and method for manufacturing non-aqueous electrolyte secondary battery |
CN111129584B (zh) * | 2019-12-20 | 2022-03-11 | 杉杉新材料(衢州)有限公司 | 一种非水电解液及其锂离子电池 |
WO2021195908A1 (zh) * | 2020-03-31 | 2021-10-07 | 宁德新能源科技有限公司 | 改善电池循环性能的方法和电子装置 |
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JPH10289731A (ja) | 1997-04-15 | 1998-10-27 | Sanyo Electric Co Ltd | 非水電解液電池 |
CN101090165A (zh) * | 2006-06-14 | 2007-12-19 | 三洋电机株式会社 | 二次电池用非水电解液及使用了它的非水电解液二次电池 |
JP5601058B2 (ja) * | 2010-07-07 | 2014-10-08 | ソニー株式会社 | 非水電解質電池および非水電解質 |
KR20140034187A (ko) * | 2011-04-11 | 2014-03-19 | 우베 고산 가부시키가이샤 | 비수 전해액 및 그것을 이용한 축전 디바이스 |
JP5897444B2 (ja) * | 2011-10-28 | 2016-03-30 | 富士フイルム株式会社 | 非水二次電池用電解液及び二次電池 |
US20130157147A1 (en) * | 2011-12-14 | 2013-06-20 | Bing Li | Low Temperature Electrolyte for High Capacity Lithium Based Batteries |
JP6130637B2 (ja) * | 2012-09-20 | 2017-05-17 | 富士フイルム株式会社 | 非水二次電池用電解液及び二次電池 |
CN104466251B (zh) * | 2014-12-12 | 2018-07-24 | 东莞新能源科技有限公司 | 一种电解液及使用该电解液的锂离子电池 |
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Cited By (3)
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KR20190131547A (ko) * | 2017-03-25 | 2019-11-26 | 후아웨이 테크놀러지 컴퍼니 리미티드 | 이중 sim 이중 활성을 구현하는 통신 방법, 및 단말 |
JP2019102231A (ja) * | 2017-11-30 | 2019-06-24 | 株式会社Gsユアサ | 蓄電素子 |
JP7147157B2 (ja) | 2017-11-30 | 2022-10-05 | 株式会社Gsユアサ | 蓄電素子 |
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US10153512B2 (en) | 2018-12-11 |
JP6771145B2 (ja) | 2020-10-21 |
CN106207261A (zh) | 2016-12-07 |
CN106207261B (zh) | 2021-01-15 |
US20160351955A1 (en) | 2016-12-01 |
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