JP6299251B2 - 電極複合体の製造方法、電極複合体および電池 - Google Patents
電極複合体の製造方法、電極複合体および電池 Download PDFInfo
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Description
この電極複合体によれば、より安全で、十分な出力が得られ、さらに大容量化が可能なリチウム電池を製造することができる。
この電池によれば、より安全で、十分な出力が得られ、さらに大容量化が可能である。
図1は、一実施形態に係るリチウム電池100の構造を示す断面模式図である。リチウム電池100は、電極複合体1と、電極2と、ポリマーゲル電解質(Polymer Gel Electrolyte、以下PGEという)フィルム3とを有する。電極複合体1は、用いられる活物質に応じて正極または負極として機能する。電極2は、電極複合体1とは逆の極性の電極である。リチウム電池100は、いわゆる固体リチウムイオン二次電池である。なお、リチウム電池100は、一次電池として用いられてもよい。
図2は、電極複合体1の製造方法を示すフローチャートである。また、図3〜6は各工程後の状態を示す模式図である。
(A)金属原子を固体電解質122の組成に従った割合で含み、酸化により固体電解質122となる塩を有する組成物。
(B)金属原子を固体電解質122の組成に従った割合で含む金属アルコキシドを有する組成物。
(C)固体電解質微粒子、または金属原子を固体電解質122の組成に従った割合で含む微粒子ゾルを溶媒、または(A)もしくは(B)に分散させた分散液。
なお、(A)に含まれる塩には、金属錯体が含まれる。また、(B)は、いわゆるゾルゲル法を用いて固体電解質を形成する場合の前駆体である。ここでは、これらの前駆体を溶媒で希釈して前駆体溶液として用いる。
3−1.試料の製造
3−1−1.実験例1
この例では、活物質成形体121の材料としてLiCoO2を、固体電解質122の材料としてLi0.35La0.55TiO3を、固体電解質123の材料としてLi2SiO3を、それぞれ用いた。
PGEフィルムを貼り付けてから電解液が合材中に塗れる時間の経過を待たずにすぐ評価を行った点以外は、実験例1と同様である。
実験例1および2に対し、充放電特性の評価を行った。実験例1および2の試料に、正極としてアルミニウムを、負極としてリチウムおよび銅を、それぞれ用いた。正極については、研磨面にアルミニウム板を張り付けて電極を形成した。負極については、まず耐リチウム層を形成した。耐リチウム層は、ポリメタクリル酸メチル(PMMA)(綜研化学社製)、LiCoO2、エチレンカーボネート(シグマアルドリッチ社製)、ジメチルカーボネート(シグマアルドリッチ社製)からなる液状組成物を塗布し、乾固させて形成した。さらに耐リチウム層から順にリチウム金属箔、銅箔を積層し、これらを圧着して負極を形成した。こうして得られた試料に対し、充放電特性の評価を行った。
Claims (6)
- リチウム複酸化物を含み、複数の空隙を有し、空隙率が10%以上50%以下である活物質成形体を形成する工程と、
前記複数の空隙に結晶質である固体電解質を形成し、前記複数の空隙に対する固体電解質の充填率が60%以上90%以下である複合体を形成する工程と、
リチウムイオンを伝導する電解液をフィルム状の支持体に含浸させたポリマーゲルフィルムを、前記固体電解質が形成された前記活物質成形体に貼り付ける工程と、
前記固体電解質を伝って前記電解液を前記複合体に含浸させる工程と
を含む電極複合体の製造方法。 - 前記電解液は、Li−TFSIおよびP13−TFSIを含む
ことを特徴とする請求項1に記載の製造方法。 - 前記固体電解質は、Li0.35La0.55TiO3を含む
ことを特徴とする請求項1または2に記載の製造方法。 - 前記活物質成形体は、LiCoO2を含む
ことを特徴とする請求項1ないし3のいずれか一項に記載の製造方法。 - リチウム複酸化物を含み、複数の空隙を有し、空隙率が10%以上50%以下である活物質成形体と、
前記複数の空隙に形成された、結晶質の固体電解質であって、前記複数の空隙に対する固体電解質の充填率が60%以上90%以下である複合体を形成する固体電解質と、
前記活物質成形体および前記固体電解質の複合体に貼り付けられ、リチウムイオンを伝導する電解液をフィルム状の支持体に含浸させたポリマーゲルフィルムと
を有し、
前記固体電解質を伝って前記電解液が前記複合体に含浸した
電極複合体。 - 請求項5に記載の電極複合体を有する電池。
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| JP2014023258A JP6299251B2 (ja) | 2014-02-10 | 2014-02-10 | 電極複合体の製造方法、電極複合体および電池 |
| US14/613,773 US10056616B2 (en) | 2014-02-10 | 2015-02-04 | Manufacturing method of electrode assembly, electrode assembly and battery |
| EP15154108.3A EP2905830B1 (en) | 2014-02-10 | 2015-02-06 | Manufacturing method of electrode assembly, electrode assembly and battery |
| CN201510063753.1A CN104835984B (zh) | 2014-02-10 | 2015-02-06 | 电极复合体的制造方法、电极复合体以及电池 |
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| JP2017004672A (ja) | 2015-06-08 | 2017-01-05 | セイコーエプソン株式会社 | 電極複合体、電極複合体の製造方法およびリチウム電池 |
| JP2017004673A (ja) | 2015-06-08 | 2017-01-05 | セイコーエプソン株式会社 | 電極複合体、電極複合体の製造方法およびリチウム電池 |
| JP6597172B2 (ja) * | 2015-10-23 | 2019-10-30 | セイコーエプソン株式会社 | 電極複合体の製造方法、電極複合体および電池 |
| JP6597183B2 (ja) * | 2015-10-29 | 2019-10-30 | セイコーエプソン株式会社 | 電極複合体の製造方法、電極複合体および電池 |
| JP2017135005A (ja) | 2016-01-28 | 2017-08-03 | セイコーエプソン株式会社 | 電極複合体の製造方法、リチウムイオン電池の製造方法 |
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| JP2014044895A (ja) * | 2012-08-28 | 2014-03-13 | Honda Motor Co Ltd | 電解質−負極構造体及びそれを備えるリチウムイオン二次電池 |
| EP3033798B1 (en) * | 2013-08-15 | 2020-01-22 | Robert Bosch GmbH | Elevated temperature li/metal battery system |
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- 2015-02-04 US US14/613,773 patent/US10056616B2/en active Active
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| US10056616B2 (en) | 2018-08-21 |
| JP2015153452A (ja) | 2015-08-24 |
| CN104835984A (zh) | 2015-08-12 |
| US20150228981A1 (en) | 2015-08-13 |
| EP2905830B1 (en) | 2019-04-17 |
| EP2905830A1 (en) | 2015-08-12 |
| CN104835984B (zh) | 2018-11-06 |
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