JP2017533548A - 半固体電極を有する電気化学セルおよびその製造方法 - Google Patents
半固体電極を有する電気化学セルおよびその製造方法 Download PDFInfo
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Abstract
Description
本出願は、2014年11月5日出願の「半固体電極を有する電気化学セルおよびその製造方法(Electrochemical Cells Having Semi-Solid Electrodes and Methods of Manufacturing the Same)」という名称の米国仮特許出願第62/075,373号の優先権および利益を主張し、その開示内容全体が参照により本明細書に組み込まれている。
本明細書に記載されている諸実施形態は、概して、集電体の片面だけに被覆された半固体電極を有する電気化学セル、このような電気化学セルのスタック、およびこのような電気化学セルスタックの形成方法に関する。
家電用バッテリは、リチウムイオンバッテリ技術の進歩とともにエネルギー密度が徐々に増加している。製造されるバッテリの貯蔵エネルギーまたは電荷容量は、(1)活物質の固有電荷容量(mAh/g)、(2)電極の容積(cm3)(すなわち、電極の厚さ、電極面積、および層(スタック)の数の積)、および(3)電極媒体中の活物質の投入量(例えば、電極媒体のcm3当たりの活物質のグラム数)の関数である。したがって、商業的な訴求力(例えば、エネルギー密度の増加およびコストの減少)を高めるためには、概して、面積電荷容量(mAh/cm2)を増加させることが望ましい。面積電荷容量は、例えば、より大きい固有電荷容量を有する活物質を使用すること、電極配合物全体における活性電荷蓄積材料の相対的割合(すなわち、「投入量」)を増加すること、および/または任意の所与のバッテリ形状因子に使用される電極材料の相対的割合を増加することにより、増加させることができる。別の言い方をすると、不活性構成要素(例えば、セパレータおよび集電体)に対する活性電荷蓄積構成要素(例えば、電極)の比率を増加することにより、バッテリの全体的な性能に寄与しない構成要素を取り除くか、または減らすことでバッテリの全体的なエネルギー密度を増加させる。面積電荷容量の増加、したがって、不活性構成要素の相対的割合の減少を達成するための1つの方法は、電極の厚さを大きくすることである。
Claims (23)
- 第1の表面および第2の表面を有する正の集電体と、
前記正の集電体の前記第1の表面上だけに配置された半固体カソードと、
第1の表面および第2の表面を有する負の集電体と、
前記負の集電体の前記第1の表面上だけに配置された半固体アノードと、
前記正の集電体の前記第1の表面と前記負の集電体の前記第1の表面との間に配置されたセパレータと、
を含む電気化学セル。 - 前記正の集電体、前記負の集電体、およびセパレータが、パウチの中に配置されている、請求項1に記載の電気化学セル。
- 前記パウチが密封されて個々の電気化学セルを形成している、請求項2に記載の電気化学セル。
- 前記半固体カソードおよび前記半固体アノードの少なくとも1つが、少なくとも約250μmの厚さを有する、請求項3に記載の電気化学セル。
- 第1の表面および第2の表面を有する集電体を含む第1の電気化学セルであって、前記集電体の前記第1の表面の上に半固体電極が配置されている第1の電気化学セルと、
第1の表面および第2の表面を有する集電体を含む第2の電気化学セルであって、前記集電体の前記第1の表面の上に半固体電極が配置されている第2の電気化学セルと、
を含むとともに、
前記第2の電気化学セルの前記集電体の前記第2の表面が、前記第1の電気化学セルの前記集電体の前記第2の表面に結合されている電気化学セルスタック。 - 前記第1の電気化学セルの前記集電体に配置された前記半固体電極が、第1のカソードであり、前記第2の電気化学セルの前記集電体に配置された前記半固体電極が第2のカソードである、請求項5に記載の電気化学セルスタック。
- 前記第1の電気化学セルに含まれる前記集電体が、第1の集電体であり、前記第1の電気化学セルが、第1の表面および第2の表面を有する第2の集電体をさらに含み、前記第2の集電体の前記第1の表面の上に半固体アノードが配置されている、請求項6に記載の電気化学セルスタック。
- 前記第1の集電体に配置された前記半固体アノードと前記半固体カソードとの間に配置されたセパレータをさらに含む、請求項7に記載の電気化学セルスタック。
- 前記第2の電気化学セルに含まれる前記集電体が、第3の集電体であり、前記第2の電気化学セルが、第1の表面および第2の表面を有する第4の集電体をさらに含み、前記第4の集電体の前記第1の表面の上に半固体アノードが配置されている、請求項7に記載の電気化学セルスタック。
- 前記第3の集電体に配置された前記半固体アノードと前記半固体カソードとの間に配置されたセパレータをさらに含む、請求項9に記載の電気化学セルスタック。
- 電気化学セルを製造する方法であって、
正の集電体の第1の表面の上に半固体カソードを被覆するステップと、
負の集電体の第1の表面の上に半固体アノードを被覆するステップと、
前記半固体カソードと前記半固体アノードとの間にセパレータを配置するステップと、
前記正の集電体、前記負の集電体、および前記セパレータをパウチの中に配置するステップと、
前記パウチを密封して前記電気化学セルを形成するステップと、
を含む方法。 - 前記正の集電体の前記第1の表面の上に前記半固体カソードを被覆するステップが、キャスティング、ドロップコーティング、プレス、およびロールプレスのうちの少なくとも1つを含む、請求項11に記載の方法。
- 前記負の集電体の前記第1の表面の上に前記半固体アノードを被覆するステップが、キャスティング、ドロップコーティング、プレス、およびロールプレスのうちの少なくとも1つを含む、請求項11に記載の方法。
- 前記正の集電体の前記第1の表面の上に前記半固体カソードを被覆するステップが、
前記正の集電体の前記第1の表面上に、開口部を画定するフレームを配置するステップと、
前記フレームの前記開口部の中へ前記半固体カソードを配置するステップと、
前記開口部から余分な半固体カソード材料を除去するステップと、
をさらに含む請求項11に記載の方法。 - 前記フレームが厚さを有し、前記フレームの前記厚さが前記半固体カソードの厚さを決定する、請求項14に記載の方法。
- 前記負の集電体の前記第1の表面の上に前記半固体アノードを被覆するステップが、
前記負の集電体の前記第1の表面上に、開口部を画定するフレームを配置するステップと、
前記フレームの前記開口部の中へ前記半固体アノードを配置するステップと、
前記開口部から余分な半固体アノード材料を除去するステップと、
をさらに含む請求項11に記載の方法。 - 前記フレームが厚さを有し、前記フレームの前記厚さが前記半固体アノードの厚さを決定する、請求項16に記載の方法。
- 前記余分な半固体アノード材料がドクターブレードで除去される、請求項16に記載の方法。
- 前記除去するステップの間、前記ドクターブレードが振動している、請求項18に記載の方法。
- 非接触機器を用いて前記半固体カソードおよび前記半固体アノードの少なくとも1つを分析するステップをさらに含む、請求項11に記載の方法。
- 前記非接触機器が光学機器である、請求項20に記載の方法。
- 前記非接触機器が、表面モフォロジおよび厚さ均一性の少なくとも1つを分析するのに用いられる、請求項20に記載の方法。
- 電気化学セルを製造する方法であって、
第1の集電体の第1の表面の上に第1の半固体電極材料を配置するステップと、
第2の集電体の第1の表面の上に第2の半固体電極材料を配置するステップと、
前記第2の集電体の前記第2の表面上に前記第1の集電体の前記第2の表面を配置してバイポーラ電極を形成するステップと、
を含む方法。
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EP4300666A2 (en) | 2024-01-03 |
CA2962788C (en) | 2024-04-09 |
EP4300666A3 (en) | 2024-02-21 |
EP3979358B1 (en) | 2023-08-02 |
WO2016073575A1 (en) | 2016-05-12 |
KR20230171477A (ko) | 2023-12-20 |
KR20170096109A (ko) | 2017-08-23 |
US10886521B2 (en) | 2021-01-05 |
US20230395771A1 (en) | 2023-12-07 |
US20160133916A1 (en) | 2016-05-12 |
CN107112444A (zh) | 2017-08-29 |
EP3216067B1 (en) | 2021-09-15 |
EP3979358A1 (en) | 2022-04-06 |
JP2021144947A (ja) | 2021-09-24 |
CA2962788A1 (en) | 2016-05-12 |
JP2023105136A (ja) | 2023-07-28 |
US10637038B2 (en) | 2020-04-28 |
CN107112444B (zh) | 2021-01-26 |
US20200321597A1 (en) | 2020-10-08 |
US20210167351A1 (en) | 2021-06-03 |
MY180711A (en) | 2020-12-07 |
PH12017500654A1 (en) | 2017-10-09 |
KR102611365B1 (ko) | 2023-12-08 |
US11611061B2 (en) | 2023-03-21 |
CN112803057A (zh) | 2021-05-14 |
EP3216067A1 (en) | 2017-09-13 |
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