JP2012142275A - 活物質、該活物質を用いた電極とその作製方法、及び二次電池 - Google Patents
活物質、該活物質を用いた電極とその作製方法、及び二次電池 Download PDFInfo
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Abstract
【解決手段】集電体上にシリコン層が設けられ、該シリコン層の表面には所定の範囲の厚さを有する薄膜層が設けられており、該薄膜層にはフッ素が含まれている電極を蓄電装置に用いる。フッ素を含む薄膜層の厚さは0nmより大きく10nm以下とし、好ましくは4nm以上9nm以下とする。フッ素を含む薄膜層のフッ素濃度は可能な限り高いことが好ましく、窒素濃度、酸素濃度及び水素濃度は低いことが好ましい。フッ素が含まれている薄膜層の形成には、SiF4ガスを用いればよい。
【選択図】図1
Description
本実施の形態では、本発明の一態様である、二次電池の電極とその作製方法について説明する。
本実施の形態では、本発明の一態様である、二次電池の負極となる電極とその作製方法の実施の形態1とは異なる形態について図2及び図3を参照して説明する。
本実施の形態では、本発明の一態様である、二次電池の負極となる電極とその作製方法の実施の形態1及び実施の形態2とは異なる形態について図4を参照して説明する。
本実施の形態では、本発明の一態様である蓄電装置について説明する。本実施の形態の蓄電装置は、実施の形態1乃至実施の形態3の電極を負極として採用した二次電池またはキャパシタである。
本実施の形態では、実施の形態1乃至実施の形態3の電極を用いた蓄電装置、すなわち実施の形態4の蓄電装置の適用例を示す。
102 集電体
104 活物質層
106 シリコン層
108 フッ素を含む薄膜層
200 電極
202 集電体
204 活物質層
206 シリコン層
206a 結晶性シリコン領域
206b ウィスカー状の結晶性シリコン領域
208 フッ素を含む薄膜層
300 電極
302 集電体
400 蓄電装置
402 外装部材
404 蓄電セル
406 端子部
408 端子部
412 負極
414 正極
416 セパレータ
418 電解質
420 負極集電体
422 負極活物質層
424 正極集電体
426 正極活物質層
500 車椅子
502 座部
506 フットレスト
508 アームレスト
510 ハンドル
512 コントローラ
514 フレーム
516 前輪
518 後輪
520 駆動部
522 制御部
530 携帯電話機
532 筐体
534 表示部
536 操作ボタン
538 外部接続ポート
540 スピーカー
542 マイク
544 操作ボタン
546 蓄電装置
550 電子書籍用端末
552 筐体
554 軸部
556 筐体
558 表示部
560 表示部
562 操作ボタン
564 スピーカー
566 電源
568 蓄電装置
Claims (14)
- シリコン層上に、厚さが0nmより大きく10nm以下のフッ素を含む薄膜層が設けられていることを特徴とする活物質。
- シリコン層上に、厚さが4nm以上9nm以下のフッ素を含む薄膜層が設けられていることを特徴とする活物質。
- 請求項1または請求項2において、
前記薄膜層は酸化シリコン層であることを特徴とする活物質。 - 請求項1乃至請求項3のいずれか一において、
前記シリコン層にはリンが含まれていることを特徴とする活物質。 - 請求項1乃至請求項4のいずれか一において、
前記薄膜層のフッ素濃度は、5.0×1019atoms・cm−3以上であることを特徴とする活物質。 - 請求項1乃至請求項5のいずれか一において、
前記薄膜層の窒素濃度は、6.0×1020atoms・cm−3以下であることを特徴とする活物質。 - 請求項1乃至請求項6のいずれか一に記載の前記活物質の層が集電体上に設けられていることを特徴とする電極。
- 正極と、
請求項7に記載の電極を用いた負極と、
フッ素を含む電解液と、を有する二次電池。 - 請求項8において、
前記集電体の材料は、チタンであることを特徴とする二次電池。 - 請求項8または請求項9において、
前記フッ素を含む電解液にはリチウムが含まれていることを特徴とする二次電池。 - 集電体上に、CVD法により第1の堆積性ガスを用いてシリコン膜を形成し、
該シリコン膜上に、CVD法によりフッ素を含む第2の堆積性ガスを用いてフッ素を含む薄膜を形成することを特徴とする電極の作製方法。 - 請求項11において、
前記フッ素を含む第2の堆積性ガスは、SiF4であることを特徴とする電極の作製方法。 - 請求項11または請求項12において、
前記第1の堆積性ガスはSiF4であることを特徴とする電極の作製方法。 - 請求項11乃至請求項13のいずれか一において、
前記第1の堆積性ガスにリンが含まれていることを特徴とする電極の作製方法。
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KR101877378B1 (ko) | 2018-07-11 |
JP6247715B2 (ja) | 2017-12-13 |
US20120156556A1 (en) | 2012-06-21 |
JP5922925B2 (ja) | 2016-05-24 |
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