JP7093367B2 - 非水電解質二次電池 - Google Patents
非水電解質二次電池 Download PDFInfo
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- JP7093367B2 JP7093367B2 JP2019557139A JP2019557139A JP7093367B2 JP 7093367 B2 JP7093367 B2 JP 7093367B2 JP 2019557139 A JP2019557139 A JP 2019557139A JP 2019557139 A JP2019557139 A JP 2019557139A JP 7093367 B2 JP7093367 B2 JP 7093367B2
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- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
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- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/381—Alkaline or alkaline earth metals elements
- H01M4/382—Lithium
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
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- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
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- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
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- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/028—Positive electrodes
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- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
- H01M2300/0028—Organic electrolyte characterised by the solvent
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- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
- H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
- H01M50/417—Polyolefins
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- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
- H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
- H01M50/423—Polyamide resins
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- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
- H01M50/429—Natural polymers
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- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
[正極の作製]
正極活物質として、LiNi0.55Mn0.20Co0.25O2で表されるリチウム金属複合酸化物を用いた。当該正極活物質と、アセチレンブラックと、PVdFとを、100:1:1の質量比で混合し、NMPを加えて正極合材スラリーを調製した。次に、アルミニウム箔からなる正極集電体の両面に正極合材スラリーを塗布し、塗膜を乾燥させた後、ロールプレス機により塗膜(正極合材層)を圧延した。その後、所定の電極サイズに裁断して、集電体の両面に合材層が形成された正極を得た。
負極活物質として、96質量部の黒鉛、及び4質量部の炭素被膜を有するSiOx(x=0.94)を用いた。当該負極活物質と、SBRのディスパージョンと、CMCのナトリウム塩とを、100:1:1の質量比で混合し、水を加えて負極合材スラリーを調製した。次に、銅箔からなる負極集電体の両面に負極合材スラリーを塗布し、塗膜を乾燥させた後、ロールプレス機により塗膜(負極合材層)を圧延した。その後、所定の電極サイズに裁断して、集電体の両面に合材層が形成された負極を得た。
FECと、PCと、EPと、EMCと、DMCとを、25℃において、20:5:30:15:30の体積比で混合した混合溶媒に、1.0mol/Lの濃度となるようにLiPF6を添加し、さらに2体積%(溶媒比)のビニレンカーボネートを添加して非水電解液を調製した。
セパレータを介して上記正極8枚及び上記負極9枚を、負極-正極-・・・-負極の順に交互に積層し、積層型の電極体を作製した。セパレータには、ポリプロピレン製セパレータを用いた。当該電極体をアルミニウムラミネートシートで構成される外装体に挿入して、上記非水電解液を注入し、外装体の開口部を封止して試験セルを作製した。
非水電解液の調製において、FECと、PCと、EPと、EMCと、DMCとを、20:5:10:35:30の体積比で混合した混合溶媒を用いたこと以外は、実施例1と同様にして試験セルを作製した。
非水電解液の調製において、FECと、PCと、EPと、EMCと、DMCとを、5:20:10:35:30の体積比で混合した混合溶媒を用いたこと以外は、実施例1と同様にして試験セルを作製した。
非水電解液の調製において、FECと、PCと、EPと、EMCと、DMCとを、5:20:30:15:30の体積比で混合した混合溶媒を用いたこと以外は、実施例1と同様にして試験セルを作製した。
非水電解液の調製において、FECと、PCと、EPと、EMCと、DMCとを、20:5:0:45:30の体積比で混合した混合溶媒を用いたこと以外は、実施例1と同様にして試験セルを作製した。
JIS K 2265-1のタグ密閉法を用いて引火点を測定した。
25℃の温度環境下、2Cの定電流でセル電圧4.2Vまで充電し、10分休止した後、0.2Cの定電流でセル電圧2.5Vまで放電を行なった。このときの充電容量X及び放電容量Yを求め、下記の式に基づいて充放電効率を算出した。
[リチウム析出の有無の評価]
上記充放電評価後の試験セルを分解して、負極表面を目視観察し、リチウム析出の有無を確認した。
12 電池ケース
13 ケース本体
14 蓋板
14a 貫通孔
15 ホルダ
16 負極端子
17 正極端子
18a,18b 中間部材
19 上側結合部材
20 絶縁部材
30 電極体
33 正極
36 負極
37 負極タブ
38 負極タブ積層体
41 負極接続部
42 上端板部
43 下側板部
50 セパレータ
Claims (4)
- 複数の正極及び複数の負極がセパレータを介して交互に積層されてなる電極体と、非水溶媒を含む非水電解液とを備えた非水電解質二次電池であって、
前記電極体は、前記正極及び前記負極の組を8層以上有し、
前記非水電解液は、前記非水溶媒の総体積に対して、25℃において、10~40体積%のフルオロエチレンカーボネートと、15~40体積%の炭素数5以下の鎖状カルボン酸エステルとを含む、非水電解質二次電池。 - 前記負極は、負極活物質として、リチウムと合金化する金属、当該金属を含有する合金、及び当該金属を含有する酸化物から選択される少なくとも1種を含む、請求項1に記載の非水電解質二次電池。
- 前記鎖状カルボン酸エステルは、プロピオン酸エチルである、請求項1又は2に記載の非水電解質二次電池。
- 前記非水溶媒は、さらに、エチレンカーボネート、エチルメチルカーボネート、及びジメチルカーボネートから選択される少なくとも1種を含む、請求項1~3のいずれか1項に記載の非水電解質二次電池。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017230619 | 2017-11-30 | ||
JP2017230619 | 2017-11-30 | ||
PCT/JP2018/042202 WO2019107158A1 (ja) | 2017-11-30 | 2018-11-15 | 非水電解質二次電池 |
Publications (2)
Publication Number | Publication Date |
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JPWO2019107158A1 JPWO2019107158A1 (ja) | 2020-12-03 |
JP7093367B2 true JP7093367B2 (ja) | 2022-06-29 |
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JP2019557139A Active JP7093367B2 (ja) | 2017-11-30 | 2018-11-15 | 非水電解質二次電池 |
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US (1) | US20200365886A1 (ja) |
EP (1) | EP3719913A4 (ja) |
JP (1) | JP7093367B2 (ja) |
CN (1) | CN111033869A (ja) |
WO (1) | WO2019107158A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN114846664A (zh) * | 2019-12-26 | 2022-08-02 | 松下控股株式会社 | 锂离子电池 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008041366A (ja) | 2006-08-03 | 2008-02-21 | Sony Corp | 電池 |
WO2008102638A1 (ja) | 2007-02-20 | 2008-08-28 | Sanyo Electric Co., Ltd. | 二次電池用非水電解液及び非水電解液二次電池 |
WO2014050114A1 (ja) | 2012-09-28 | 2014-04-03 | 三洋電機株式会社 | 非水電解質二次電池 |
JP2014067490A (ja) | 2012-09-24 | 2014-04-17 | Sanyo Electric Co Ltd | 非水電解質二次電池 |
JP2014523101A (ja) | 2011-07-18 | 2014-09-08 | エルジー・ケム・リミテッド | 非水電解液及びそれを用いたリチウム二次電池 |
JP2015050280A (ja) | 2013-08-30 | 2015-03-16 | 旭化成株式会社 | 非水系リチウム型蓄電素子 |
WO2016084288A1 (ja) | 2014-11-28 | 2016-06-02 | 三洋電機株式会社 | 非水電解質二次電池 |
WO2017047020A1 (ja) | 2015-09-16 | 2017-03-23 | パナソニックIpマネジメント株式会社 | 電池 |
JP2017531285A (ja) | 2014-08-14 | 2017-10-19 | ソルヴェイ(ソシエテ アノニム) | スルトン及びフッ素化溶媒を含む非水電解質組成物 |
Family Cites Families (8)
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US20070287071A1 (en) * | 2006-06-11 | 2007-12-13 | Sanyo Electric Co., Ltd. | Non-aqueous electrolyte solution for secondary battery and non-aqueous electrolyte secondary battery using the electrolyte solution |
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 |
TWI464933B (zh) * | 2011-07-18 | 2014-12-11 | Lg Chemical Ltd | 非水電解質及使用其之鋰二次電池 |
JP2013218967A (ja) | 2012-04-11 | 2013-10-24 | Panasonic Corp | 非水電解質および非水電解質二次電池 |
JP5994977B2 (ja) * | 2012-06-26 | 2016-09-21 | 三菱自動車工業株式会社 | 二次電池 |
WO2014155992A1 (ja) * | 2013-03-27 | 2014-10-02 | 三洋電機株式会社 | 非水電解質二次電池 |
CN106537680A (zh) * | 2014-07-08 | 2017-03-22 | 关东电化工业株式会社 | 包含具有3,3,3‑三氟丙酸酯基的酯的非水电解液、以及使用其的非水电解液电池 |
KR101747910B1 (ko) | 2014-09-30 | 2017-06-16 | 주식회사 엘지화학 | 비수 전해액 리튬 이차전지 |
-
2018
- 2018-11-15 WO PCT/JP2018/042202 patent/WO2019107158A1/ja unknown
- 2018-11-15 US US16/638,376 patent/US20200365886A1/en not_active Abandoned
- 2018-11-15 EP EP18883942.7A patent/EP3719913A4/en not_active Withdrawn
- 2018-11-15 JP JP2019557139A patent/JP7093367B2/ja active Active
- 2018-11-15 CN CN201880051194.4A patent/CN111033869A/zh active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008041366A (ja) | 2006-08-03 | 2008-02-21 | Sony Corp | 電池 |
WO2008102638A1 (ja) | 2007-02-20 | 2008-08-28 | Sanyo Electric Co., Ltd. | 二次電池用非水電解液及び非水電解液二次電池 |
JP2014523101A (ja) | 2011-07-18 | 2014-09-08 | エルジー・ケム・リミテッド | 非水電解液及びそれを用いたリチウム二次電池 |
JP2014067490A (ja) | 2012-09-24 | 2014-04-17 | Sanyo Electric Co Ltd | 非水電解質二次電池 |
WO2014050114A1 (ja) | 2012-09-28 | 2014-04-03 | 三洋電機株式会社 | 非水電解質二次電池 |
JP2015050280A (ja) | 2013-08-30 | 2015-03-16 | 旭化成株式会社 | 非水系リチウム型蓄電素子 |
JP2017531285A (ja) | 2014-08-14 | 2017-10-19 | ソルヴェイ(ソシエテ アノニム) | スルトン及びフッ素化溶媒を含む非水電解質組成物 |
WO2016084288A1 (ja) | 2014-11-28 | 2016-06-02 | 三洋電機株式会社 | 非水電解質二次電池 |
WO2017047020A1 (ja) | 2015-09-16 | 2017-03-23 | パナソニックIpマネジメント株式会社 | 電池 |
Also Published As
Publication number | Publication date |
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EP3719913A4 (en) | 2020-12-23 |
JPWO2019107158A1 (ja) | 2020-12-03 |
CN111033869A (zh) | 2020-04-17 |
WO2019107158A1 (ja) | 2019-06-06 |
US20200365886A1 (en) | 2020-11-19 |
EP3719913A1 (en) | 2020-10-07 |
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