JP2012138353A - 蓄電装置及びその作製方法 - Google Patents
蓄電装置及びその作製方法 Download PDFInfo
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- JP2012138353A JP2012138353A JP2011267878A JP2011267878A JP2012138353A JP 2012138353 A JP2012138353 A JP 2012138353A JP 2011267878 A JP2011267878 A JP 2011267878A JP 2011267878 A JP2011267878 A JP 2011267878A JP 2012138353 A JP2012138353 A JP 2012138353A
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- Prior art keywords
- oxide
- electrolyte
- negative electrode
- polymer compound
- positive electrode
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Abstract
【解決手段】正極と、負極と、正極及び負極の間に設けられる電解質とを有し、電解質は、イオン伝導性高分子化合物、無機酸化物、及びリチウム塩を有し、電解質において、イオン伝導性高分子化合物及び無機酸化物の合計に対して無機酸化物は30wt%より多く50wt%以下である蓄電装置である。
【選択図】図1
Description
本実施の形態では、本発明の一態様である蓄電装置及びその作製方法について説明する。
本実施の形態では、実施の形態1に示す蓄電装置よりも充放電容量を高めるため、実施の形態1に示す蓄電装置において、正極及び負極の一以上を塗布法により作製し、且つ軟化点が、電解質に含まれるイオン伝導性高分子化合物の軟化点以下である高分子化合物を正極活物質層及び負極活物質層の一以上のバインダとして用いることを特徴とする。
本実施の形態では、実施の形態1及び実施の形態2で説明した蓄電装置の応用形態について図5を用いて説明する。
本実施の形態では、本発明の一態様に係る蓄電装置の一例である二次電池を、無線給電システム(以下、RF給電システムと呼ぶ。)に用いた場合の一例を、図6および図7のブロック図を用いて説明する。なお、各ブロック図では、受電装置および給電装置内の構成要素を機能ごとに分類し、互いに独立したブロックとして示しているが、実際の構成要素は機能ごとに完全に切り分けることが困難であり、一つの構成要素が複数の機能に係わることもあり得る。
電解質1〜電解質6の材料として、表1に示す重量のポリエチレンオキサイド(以下、PEOと示す。軟化点65〜67度。)、LiTFSI、及びSiO2、Li2O、Al2O3の一以上を含む無機酸化物を秤量した。ここでは、PEOに含まれる酸素原子と、LiTFSIに含まれるリチウムイオンの比が20:1となるように、それぞれの重量を決定した。次に、PEO、LiTFSI、及び無機酸化物の混合物それぞれに、溶媒として15mlの脱水アセトニトリルを混合し、混合溶液を形成した。
1gのPEO、及び0.1724gのLiPF6を秤量した。次に、上記電解質1〜電解質6と同様の工程により、PEO及びLiPF6を有する比較電解質を形成した。
活物質層の材料として、79.4gのLiFePO4、14.8gのアセチレンブラック、5gのPEO、及び0.8gのLiPF6を混合し、スラリーを形成した。
<負極の構成>
ここでは、負極としてリチウム箔を準備した。
次に、本実施例の二次電池の作製工程を示す。
Claims (6)
- 正極と、負極と、前記正極及び前記負極の間に設けられる電解質とを有し、
前記電解質は、イオン伝導性高分子化合物、無機酸化物、及びリチウム塩を有し、
前記電解質において、前記イオン伝導性高分子化合物及び前記無機酸化物の合計に対して前記無機酸化物は30wt%より多く50wt%以下であることを特徴とする蓄電装置。 - 正極と、負極と、前記正極及び前記負極の間に設けられる電解質とを有し、
前記電解質は、イオン伝導性高分子化合物、無機酸化物、及びリチウム塩を有し、
前記電解質において、前記イオン伝導性高分子化合物及び前記無機酸化物の合計に対して前記無機酸化物は30wt%より多く50wt%以下であり、
前記正極及び前記負極の少なくとも一方は、集電体上に活物質層が設けられ、
前記活物質層は、前記イオン伝導性高分子化合物を有することを特徴とする蓄電装置。 - 請求項1または請求項2において、前記イオン伝導性高分子化合物は、ポリアルキレンオキサイドであることを特徴とする蓄電装置。
- 請求項3において、前記ポリアルキレンオキサイドは、ポリエチレンオキサイド及びポリプロピレンオキサイドの一以上であることを特徴とする蓄電装置。
- 請求項1乃至請求項4のいずれか一項において、前記無機酸化物は、酸化シリコン、酸化チタン、酸化ジルコニウム、酸化アルミニウム、酸化亜鉛、酸化鉄、酸化セリウム、酸化マグネシウム、酸化アンチモン、酸化ゲルマニウム、酸化リチウム、酸化グラファイト、チタン酸バリウム、及びメタ珪素酸リチウムの一以上であることを特徴とする蓄電装置。
- 請求項1乃至請求項5のいずれか一項において、前記リチウム塩は、LiCF3SO3、LiPF6、LiBF4、LiSCN、LiN(C2F5SO2)2、LiN(CF3SO2)2及びLiClO4の一以上であることを特徴とする蓄電装置。
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| US9680272B2 (en) * | 2012-02-17 | 2017-06-13 | Semiconductor Energy Laboratory Co., Ltd. | Method for forming negative electrode and method for manufacturing lithium secondary battery |
| CN107104222B (zh) | 2016-02-19 | 2021-09-21 | 株式会社半导体能源研究所 | 蓄电装置、蓄电系统 |
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| FI128155B (fi) | 2018-03-20 | 2019-11-15 | Kalustebetoni Oy | Jännitelähde, jonka elektrolyytissä on tuhkaa, ja menetelmä jännitelähteen valmistamiseksi |
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| JP2016192413A (ja) | 2016-11-10 |
| TWI621294B (zh) | 2018-04-11 |
| JP6189502B2 (ja) | 2017-08-30 |
| JP6449388B2 (ja) | 2019-01-09 |
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| TW201232878A (en) | 2012-08-01 |
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| JP2021005576A (ja) | 2021-01-14 |
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| CN103283077A (zh) | 2013-09-04 |
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| JP2019046806A (ja) | 2019-03-22 |
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