JP2013065472A5 - - Google Patents
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- JP2013065472A5 JP2013065472A5 JP2011203737A JP2011203737A JP2013065472A5 JP 2013065472 A5 JP2013065472 A5 JP 2013065472A5 JP 2011203737 A JP2011203737 A JP 2011203737A JP 2011203737 A JP2011203737 A JP 2011203737A JP 2013065472 A5 JP2013065472 A5 JP 2013065472A5
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- positive electrode
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従来のリチウム二次電池も、本発明の活物質も、正極電位が４．５Ｖ（ｖｓ．Ｌｉ／Ｌｉ＋）付近に至って充放電が可能である。しかしながら、使用する非水電解質の種類によっては、充電時の正極電位が高すぎると、非水電解質が酸化分解され電池性能の低下を引き起こす虞がある。したがって、使用時において、充電時の正極の最大到達電位が４．３Ｖ（ｖｓ．Ｌｉ／Ｌｉ＋）以下となるような充電方法を採用しても、充分な放電容量が得られるリチウム二次電池が求められる場合がある。本発明の活物質を用いると、使用時において、充電時の正極の最大到達電位が４．５Ｖ（ｖｓ．Ｌｉ／Ｌｉ＋）より低くなるような、例えば、４．４Ｖ（ｖｓ．Ｌｉ／Ｌｉ＋）以下や４．３Ｖ（ｖｓ．Ｌｉ／Ｌｉ＋）以下となるような充電方法を採用しても、約２００ｍＡｈ／ｇ以上という従来の正極活物質の容量を超える放電電気量を取り出すことが可能である。 Conventional lithium secondary battery is also the active material of the present invention is also capable of charge and discharge potential of the positive electrode reaches around 4.5V (vs.Li/Li +). However, depending on the type of nonaqueous electrolyte used, if the positive electrode potential during charging is too high, the nonaqueous electrolyte may be oxidized and decomposed, resulting in a decrease in battery performance. Therefore, in use, a lithium secondary battery capable of obtaining a sufficient discharge capacity even when a charging method is adopted in which the maximum potential of the positive electrode during charging is 4.3 V (vs. Li / Li + ) or less. May be required. When the active material of the present invention is used, for example, 4.4 V (vs. Li / Li) such that the maximum potential of the positive electrode during charging is lower than 4.5 V (vs. Li / Li + ) during use. + ) Or less and 4.3 V (vs. Li / Li + ) or less, even if a charging method is adopted, it is possible to take out a discharge electric quantity exceeding the capacity of the conventional positive electrode active material of about 200 mAh / g or more. Is possible.
（実施例１５〜１８、比較例７）
前記共沈炭酸塩前駆体に、炭酸リチウムの一部を硫酸リチウム（Ｌｉ２ＳＯ４）に変えて加え、Ｌｉに対するＳのモル比Ｓ／Ｌｉが０．０２５〜０．１５となるようにした以外は、比較例１と同様にして、実施例１１〜１４、比較例７のリチウム遷移金属複合酸化物を作製した。
(Examples 15 to 18, Comparative Example 7)
The co沈炭salt precursor added a portion of the lithium carbonate instead of lithium sulfate (Li 2 SO 4), the molar ratio S / Li of S to Li was set to be 0.025 to 0.15 Except for the above, in the same manner as in Comparative Example 1, lithium transition metal composite oxides of Examples 11 to 14 and Comparative Example 7 were produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011203737A JP5946011B2 (en) | 2011-09-16 | 2011-09-16 | Non-aqueous electrolyte secondary battery active material, non-aqueous electrolyte secondary battery electrode, and non-aqueous electrolyte secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011203737A JP5946011B2 (en) | 2011-09-16 | 2011-09-16 | Non-aqueous electrolyte secondary battery active material, non-aqueous electrolyte secondary battery electrode, and non-aqueous electrolyte secondary battery |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2013065472A JP2013065472A (en) | 2013-04-11 |
| JP2013065472A5 true JP2013065472A5 (en) | 2014-03-13 |
| JP5946011B2 JP5946011B2 (en) | 2016-07-05 |
Family
ID=48188803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011203737A Active JP5946011B2 (en) | 2011-09-16 | 2011-09-16 | Non-aqueous electrolyte secondary battery active material, non-aqueous electrolyte secondary battery electrode, and non-aqueous electrolyte secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5946011B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6467352B2 (en) * | 2014-01-20 | 2019-02-13 | 住友化学株式会社 | Positive electrode active material and method for producing the same |
| US20160351901A1 (en) * | 2014-01-31 | 2016-12-01 | Sanyo Electric Co., Ltd. | Nonaqueous-electrolyte secondary battery |
| JP6428105B2 (en) * | 2014-09-29 | 2018-11-28 | 住友金属鉱山株式会社 | Nickel cobalt manganese compound and method for producing the same |
| WO2018163519A1 (en) | 2017-03-06 | 2018-09-13 | パナソニックＩｐマネジメント株式会社 | Positive electrode active material and battery |
| EP3618152A4 (en) | 2017-04-24 | 2020-03-04 | Panasonic Intellectual Property Management Co., Ltd. | Positive electrode active material and battery |
| EP3633773A4 (en) | 2017-05-29 | 2020-05-27 | Panasonic Intellectual Property Management Co., Ltd. | Positive electrode active substance and battery |
| US11171327B2 (en) | 2018-01-17 | 2021-11-09 | Panasonic Intellectual Property Management Co., Ltd. | Positive electrode active material containing lithium composite oxide and covering material and battery |
| WO2020012739A1 (en) * | 2018-07-12 | 2020-01-16 | パナソニックＩｐマネジメント株式会社 | Positive electrode active material and cell comprising same |
| WO2022070898A1 (en) | 2020-09-30 | 2022-04-07 | パナソニックＩｐマネジメント株式会社 | Positive electrode active material for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002184402A (en) * | 2000-12-11 | 2002-06-28 | Mitsui Chemicals Inc | Positive electrode active material for lithium secondary battery, and battery |
| JP2003151546A (en) * | 2001-11-08 | 2003-05-23 | Nichia Chem Ind Ltd | Positive electrode active substance for lithium ion secondary battery and its manufacturing method |
| JP4997700B2 (en) * | 2004-12-13 | 2012-08-08 | 三菱化学株式会社 | Lithium nickel manganese composite oxide powder for positive electrode material of lithium secondary battery, production method thereof, and positive electrode for lithium secondary battery and lithium secondary battery using the same |
| JP5482173B2 (en) * | 2008-12-22 | 2014-04-23 | 住友化学株式会社 | Electrode mixture, electrode and non-aqueous electrolyte secondary battery |
-
2011
- 2011-09-16 JP JP2011203737A patent/JP5946011B2/en active Active
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