JP2016184496A - 電極複合体および電池 - Google Patents
電極複合体および電池 Download PDFInfo
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Abstract
【解決手段】本発明の電極複合体10は、遷移金属酸化物で構成される活物質を含む活物質成形体(活物質部)2と、イオン伝導性を有する固体電解質を含む固体電解質層(固体電解質部)3と、下記一般式(II)で表わされる金属複酸化物およびその誘導体の少なくとも一方を含む複酸化物層(複酸化物部)5とを備える複合体4と、複合体4の一面(一方の面)41に、活物質成形体2と接合して設けられた集電体1とを有する。
Ln2Li0.5M0.5O4 ・・・ (II)
[式中、Lnは、ランタノイド、Mは、遷移金属を表す。]
【選択図】図1
Description
Ln2Li0.5M0.5O4 ・・・ (II)
[式中、Lnは、ランタノイド、Mは、遷移金属を表す。]
本実施形態は、電極複合体のひとつの実施形態と当該電極複合体を用いたリチウム二次電池について説明するものである。
[式中、Lnは、ランタノイド、Mは、遷移金属を表す。]
まず、図3〜図6を用いて、電極複合体10の製造方法について説明する。
上記の製造方法で電極複合体10を形成することができる。
以上のような工程を経ることによっても、活物質成形体2を得ることができる。
本実施形態は、第1実施形態で示したものとは異なる電極複合体について示すものである。尚、本実施形態を含め以下の実施形態もしくは実施例において、第1実施形態と同様の構成要素に関しては同じ番号を付与し、その説明を省略する場合がある。
図9は、本実施形態に係る電極複合体10Cを適用したリチウム二次電池100Cの縦断面図を示した図である。
図10に、本実施形態に係るリチウム二次電池100Dの縦断面図を示す。リチウム二次電池100Dは構成要素として、複合体4Dを有する電極複合体10D、電極20、および電極複合体10Dと電極20との間に電解液含浸層35を含む。
1.複合体の製造
<1>まず、粉末状のLiCoO2粒子(シグマアルドリッチジャパン社製、以下、「LCO」と言うこともある。)に、ポリプロピレンカーボネート(シグマアルドリッチジャパン社製)5重量部を添加し、100重量部の1,4−ジオキサン(関東化学社製)に懸濁したスラリーを、塗布・乾燥によりグリーンシートに成型した。このシートを、直径10mm、厚さ100μmの円盤状に加工したのち1,000℃で8時間大気焼成することで、嵩密度65%の活物質成形体(多孔性正極焼結体)を得た。
前記工程<2>における、複酸化物層の形成を省略したこと以外は、前記実施例1と同様にして、複合体を作製した。
実施例および比較例のそれぞれの複合体について、以下に示すような充放電特性の評価を行った。
2、2A……活物質成形体
3……固体電解質層
3X、5X……液状体
4、4A、4C、4D……複合体
41……一面
42……他面
5、5A……複酸化物層
10、10A、10C、10D……電極複合体
20……電極
21……活物質粒子
26……スラリー
30……充填層
31……粒状体
35……電解液含浸層
36……電解液
100、100A、100C、100D……リチウム二次電池
D……ディスペンサー
F、F2……成形型
F21……底部
F22……蓋部
F25……凹部
Claims (9)
- 活物質部、固体電解質部および複酸化物部を有する複合体と、
前記複合体に接合された集電体と、を備え、
前記活物質部は遷移金属酸化物で構成される活物質を含み、
前記固体電解質部はイオン伝導性を有する固体電解質を含み、
前記複酸化物部は式(II)で表される金属複酸化物およびその誘導体の少なくとも一方を含み、
前記集電体は、少なくとも前記活物質部及び前記複酸化物部に接合されていることを特徴とする電極複合体。
Ln2Li0.5M0.5O4 ・・・ (II)
[式中、Lnは、ランタノイド、Mは、遷移金属を表す。] - 前記複酸化物部は、前記活物質部と前記固体電解質部との間に形成されている請求項1に記載の電極複合体。
- 前記複酸化物部は、前記活物質部を覆うように層状に形成されている請求項1または2に記載の電極複合体。
- 前記活物質部は、内部に複数の連通孔を有し、
前記複酸化物部は、前記複数の連通孔の表面を覆っている請求項3に記載の電極複合体。 - 電池を構成するための他の電極が接合される前記複合体の面の表面は、前記固体電解質部である請求項1ないし4のいずれか1項に記載の電極複合体。
- 前記複酸化物部の電子伝導率は、前記活物質部の電子伝導率より高いことを特徴とする請求項1ないし5のいずれか1項に記載の電極複合体。
- 前記遷移金属酸化物は、リチウムと、コバルト、マンガンおよびニッケルのうちの少なくとも1種とを含む請求項1ないし6のいずれか1項に記載の電極複合体。
- 前記固体電解質は、ガーネット型結晶構造またはガーネット型類似結晶構造を有する請求項1ないし7のいずれか1項に記載の電極複合体。
- 請求項1ないし8のいずれか1項に記載の電極複合体と、
前記複合体の前記他の電極が接合される面に設けられた電極と、有することを特徴とする電池。
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JP2015063912A JP6507778B2 (ja) | 2015-03-26 | 2015-03-26 | 電極複合体および電池 |
US15/075,534 US10340509B2 (en) | 2015-03-26 | 2016-03-21 | Electrode assembly and battery |
CN201610161959.2A CN106025332B (zh) | 2015-03-26 | 2016-03-21 | 电极复合体及电池 |
EP16162314.5A EP3073557B1 (en) | 2015-03-26 | 2016-03-24 | Electrode assembly and battery |
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JP2015063912A JP6507778B2 (ja) | 2015-03-26 | 2015-03-26 | 電極複合体および電池 |
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JP2016184496A5 JP2016184496A5 (ja) | 2018-02-15 |
JP6507778B2 JP6507778B2 (ja) | 2019-05-08 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2018088344A (ja) * | 2016-11-29 | 2018-06-07 | セイコーエプソン株式会社 | 複合体および複合体の製造方法、電池および電池の製造方法、電子機器 |
JP2020535608A (ja) * | 2017-09-28 | 2020-12-03 | セブン キング エナージー カンパニー リミテッドSeven King Energy Co.,Ltd. | 一体型全固体二次電池{Integral All−Solid State Rechargeable Batteries} |
WO2023228520A1 (ja) * | 2022-05-27 | 2023-11-30 | パナソニックIpマネジメント株式会社 | 固体電解質組成物、電極組成物、固体電解質シートの製造方法、電極シートの製造方法、および電池の製造方法 |
WO2023228519A1 (ja) * | 2022-05-27 | 2023-11-30 | パナソニックIpマネジメント株式会社 | 固体電解質組成物、電極組成物、固体電解質シートの製造方法、電極シートの製造方法、および電池の製造方法 |
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CN106384842B (zh) * | 2016-11-15 | 2019-07-05 | 复旦大学 | 一种纳米LiBH4-SiO2固态电解质及其制备方法 |
JP6837950B2 (ja) * | 2017-09-21 | 2021-03-03 | 株式会社東芝 | 二次電池、電池パック、及び車両 |
EP3688828A1 (en) | 2017-09-29 | 2020-08-05 | Robert Bosch GmbH | Solid composite electrode with coated materials |
US10916763B2 (en) | 2019-06-03 | 2021-02-09 | Enevate Corporation | Surface-fluorinated silicon-containing electrodes |
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CN109742375B (zh) * | 2019-01-16 | 2020-08-28 | 北京理工大学 | 一种表层重组La2Ni0.5Li0.5O4和表层掺杂La3+的NCM三元正极材料 |
DE102019102021A1 (de) * | 2019-01-28 | 2020-07-30 | Volkswagen Aktiengesellschaft | Verfahren zur Herstellung einer Kathode für eine Feststoffbatterie |
FR3093380B1 (fr) * | 2019-03-01 | 2021-03-12 | Easyl | Électrode pour dispositif de stockage de l’énergie rechargeable |
JP7331640B2 (ja) * | 2019-11-05 | 2023-08-23 | セイコーエプソン株式会社 | 正極活物質複合体 |
JP7331641B2 (ja) * | 2019-11-05 | 2023-08-23 | セイコーエプソン株式会社 | 正極活物質複合粒子および粉末 |
CN111509186B (zh) * | 2020-05-22 | 2021-02-02 | 清陶(昆山)能源发展有限公司 | 一种锂离子固态电池正极及其制备工艺和锂离子固态电池 |
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US20160285080A1 (en) | 2016-09-29 |
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US10340509B2 (en) | 2019-07-02 |
CN106025332B (zh) | 2019-11-01 |
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