JP5997890B2 - 蓄電装置用正極活物質の作製方法 - Google Patents
蓄電装置用正極活物質の作製方法 Download PDFInfo
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Description
本実施の形態では、本発明の一態様であるリチウムイオン二次電池の正極活物質の作製方法について図1を用いて説明する。
本実施の形態では、実施の形態1に説明した作製方法により得られた正極活物質を用いた蓄電装置としてリチウムイオン二次電池を例に挙げて説明する。リチウムイオン二次電池の概要を図3を用いて説明する。
本実施の形態では、実施の形態2とは異なる蓄電装置であるリチウムイオン二次電池の例を説明する。リチウムイオン二次電池の概要を図4に示す。
本実施の形態では、実施の形態2および実施の形態3で説明した蓄電装置の応用例について説明する。
102 グラフェン
200 負極集電体
202 負極活物質
204 負極
206 筐体
210 セパレータ
228 正極集電体
230 正極活物質
232 正極
240 スペーサー
242 ワッシャー
244 筐体
300 正極集電体
301 正極活物質
302 正極
305 負極集電体
306 負極活物質
307 負極
310 セパレータ
311 電解液
320 筐体
321 第1の電極
322 第2の電極
410 携帯電話機
411 筐体
412 表示部
413 操作ボタン
414 外部接続ポート
415 スピーカー
416 マイク
417 操作ボタン
430 電子書籍用端末
431 筐体
432 軸部
433 筐体
435 表示部
437 表示部
439 操作ボタン
441 スピーカー
443 電源
450 電気自動車
451 蓄電装置
453 制御回路
455 コンピュータ
457 駆動装置
Claims (5)
- 正極活物質となる原料を混合し、粉砕して、混合物を作製し、
前記粉砕された混合物を圧縮成型し、
前記圧縮成型された混合物に対し第1の焼成を行った後、前記混合物を粉砕し、
前記第1の焼成後の前記粉砕された混合物に酸化グラフェンを添加し、
前記酸化グラフェンが添加された混合物を圧縮成型し、
前記圧縮成型された、酸化グラフェンが添加された混合物に対し第2の焼成を行うことで、反応生成物を形成するとともに前記酸化グラフェンを還元し、前記反応生成物の表面に複数のグラフェンを被覆し、
前記第1の焼成及び前記第2の焼成の各々は、希ガス、窒素、水素または減圧下で行われ、
前記複数のグラフェンの各々は、前記反応生成物の表面に対し角度θを有し、
前記角度θは、0°以上30°未満であることを特徴とする蓄電装置用正極活物質の作製方法。 - 請求項1において、
前記グラフェンの厚さは、0.34nm以上3.4nm以下であることを特徴とする蓄電装置用正極活物質の作製方法。 - 請求項1又は2において、
前記反応生成物の粒径は、50nm以下であることを特徴とする蓄電装置用正極活物質の作製方法。 - 請求項1乃至3のいずれか一において、
前記反応生成物は、リン酸鉄リチウム、リン酸ニッケルリチウム、リン酸コバルトリチウムまたはリン酸マンガンリチウムを含むことを特徴とする蓄電装置用正極活物質の作製方法。 - 請求項1乃至4のいずれか一において、
前記角度θは、0°以上10°未満であることを特徴とする蓄電装置用正極活物質の作製方法。
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JP2016166448A Withdrawn JP2016197610A (ja) | 2010-10-08 | 2016-08-29 | 蓄電装置 |
JP2018053057A Expired - Fee Related JP6651566B2 (ja) | 2010-10-08 | 2018-03-20 | 蓄電装置用正極活物質の作製方法 |
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JP2020008244A Withdrawn JP2020074315A (ja) | 2010-10-08 | 2020-01-22 | 蓄電装置 |
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US (2) | US9490474B2 (ja) |
JP (4) | JP5997890B2 (ja) |
KR (5) | KR101983860B1 (ja) |
CN (2) | CN103140967B (ja) |
DE (1) | DE112011103395T5 (ja) |
TW (2) | TWI623128B (ja) |
WO (1) | WO2012046791A1 (ja) |
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US20120088156A1 (en) | 2012-04-12 |
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