POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF
To provide a positive electrode active material containing Li2RuO3 as Li transition metal composite oxide, which can achieve a high capacity and which has a high-level cycle characteristic.SOLUTION: The present invention relates to a positive electrode active material for a Li ion secondary battery,...
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| creator | YABUUCHI NAOAKI MASAHIRO YASUSHI |
| description | To provide a positive electrode active material containing Li2RuO3 as Li transition metal composite oxide, which can achieve a high capacity and which has a high-level cycle characteristic.SOLUTION: The present invention relates to a positive electrode active material for a Li ion secondary battery, which comprises an Li2RuO3 composite oxide having a layered rock salt-type crystal structure. The Li2RuO3 composite oxide to which the invention is applied has the following two requirements: (i) a diffraction peak of (003)-plane of an ilmenite type structure arises in an X-ray diffraction pattern after an initial full-charge operation; and (ii) after an initial full-charge operation, Ru ions of 20% up to 50% of Ru ions involved in the Li2RuO3 composite oxide transfer to Li ion sites. Suitable transfer of the Ru ions contributes to keeping of an interlayer distance allows a Li ion secondary battery to exhibit a high-level cycle characteristic. The Ru ion transfer is revealed from crystal structure analysis on X-ray diffraction patterns in respective stages in an initial charge process.SELECTED DRAWING: Figure 10
【課題】Ｌｉ遷移金属複合酸化物としてＬｉ２ＲｕＯ３を含む正極活物質であって、高容量化と高サイクル性を有するものを提供する。【解決手段】本発明は、層状岩塩型結晶構造を有するＬｉ２ＲｕＯ３複合酸化物からなるＬｉイオン二次電池用正極活物質に関する。本発明で適用されるＬｉ２ＲｕＯ３複合酸化物は、（ｉ）初回満充電後のＸ線回折パターンに、イルメナイト型構造の（００３）面の回折ピークが発現すること、（ｉｉ）初回満充電後において前記Ｌｉ２ＲｕＯ３複合酸化物を構成するＲｕイオンの２０％以上５０％以下のＲｕイオンがＬｉイオンサイトへ移動すること、の２つの条件を具備する。前記のＲｕイオンの好適な移動が層間距離の維持に寄与し、高サイクル性を発揮させる。このＲｕイオンの移動は、初回充電過程における各段階のＸ線回折パターンに基づく結晶構造解析から明らかにされる。【選択図】図１０ |
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【課題】Ｌｉ遷移金属複合酸化物としてＬｉ２ＲｕＯ３を含む正極活物質であって、高容量化と高サイクル性を有するものを提供する。【解決手段】本発明は、層状岩塩型結晶構造を有するＬｉ２ＲｕＯ３複合酸化物からなるＬｉイオン二次電池用正極活物質に関する。本発明で適用されるＬｉ２ＲｕＯ３複合酸化物は、（ｉ）初回満充電後のＸ線回折パターンに、イルメナイト型構造の（００３）面の回折ピークが発現すること、（ｉｉ）初回満充電後において前記Ｌｉ２ＲｕＯ３複合酸化物を構成するＲｕイオンの２０％以上５０％以下のＲｕイオンがＬｉイオンサイトへ移動すること、の２つの条件を具備する。前記のＲｕイオンの好適な移動が層間距離の維持に寄与し、高サイクル性を発揮させる。このＲｕイオンの移動は、初回充電過程における各段階のＸ線回折パターンに基づく結晶構造解析から明らかにされる。【選択図】図１０</description><language>eng ; jpn</language><subject>BASIC ELECTRIC ELEMENTS ; CHEMISTRY ; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F ; ELECTRICITY ; INORGANIC CHEMISTRY ; METALLURGY ; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY</subject><creationdate>2024</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20240117&DB=EPODOC&CC=JP&NR=2024005520A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20240117&DB=EPODOC&CC=JP&NR=2024005520A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>YABUUCHI NAOAKI</creatorcontrib><creatorcontrib>MASAHIRO YASUSHI</creatorcontrib><title>POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF</title><description>To provide a positive electrode active material containing Li2RuO3 as Li transition metal composite oxide, which can achieve a high capacity and which has a high-level cycle characteristic.SOLUTION: The present invention relates to a positive electrode active material for a Li ion secondary battery, which comprises an Li2RuO3 composite oxide having a layered rock salt-type crystal structure. The Li2RuO3 composite oxide to which the invention is applied has the following two requirements: (i) a diffraction peak of (003)-plane of an ilmenite type structure arises in an X-ray diffraction pattern after an initial full-charge operation; and (ii) after an initial full-charge operation, Ru ions of 20% up to 50% of Ru ions involved in the Li2RuO3 composite oxide transfer to Li ion sites. Suitable transfer of the Ru ions contributes to keeping of an interlayer distance allows a Li ion secondary battery to exhibit a high-level cycle characteristic. The Ru ion transfer is revealed from crystal structure analysis on X-ray diffraction patterns in respective stages in an initial charge process.SELECTED DRAWING: Figure 10
【課題】Ｌｉ遷移金属複合酸化物としてＬｉ２ＲｕＯ３を含む正極活物質であって、高容量化と高サイクル性を有するものを提供する。【解決手段】本発明は、層状岩塩型結晶構造を有するＬｉ２ＲｕＯ３複合酸化物からなるＬｉイオン二次電池用正極活物質に関する。本発明で適用されるＬｉ２ＲｕＯ３複合酸化物は、（ｉ）初回満充電後のＸ線回折パターンに、イルメナイト型構造の（００３）面の回折ピークが発現すること、（ｉｉ）初回満充電後において前記Ｌｉ２ＲｕＯ３複合酸化物を構成するＲｕイオンの２０％以上５０％以下のＲｕイオンがＬｉイオンサイトへ移動すること、の２つの条件を具備する。前記のＲｕイオンの好適な移動が層間距離の維持に寄与し、高サイクル性を発揮させる。このＲｕイオンの移動は、初回充電過程における各段階のＸ線回折パターンに基づく結晶構造解析から明らかにされる。【選択図】図１０</description><subject>BASIC ELECTRIC ELEMENTS</subject><subject>CHEMISTRY</subject><subject>COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F</subject><subject>ELECTRICITY</subject><subject>INORGANIC CHEMISTRY</subject><subject>METALLURGY</subject><subject>PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2024</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNy0EKwjAQheFuXIh6h8G9EKo9wDSZmJE2KelU6KoUiSvRQr0_FvEArh78fG-dpSa0LHwloIq0xGAIUH9DjUKRsQIbIlQsjrsaOHhoSQdvMPZQoiymB_Rm4b6zy7WL7M9Qk7hgQBxFCnabre7jY067326yvSXR7pCm15DmabylZ3oPlyZX-UmposgVHv9CHwq8NV4</recordid><startdate>20240117</startdate><enddate>20240117</enddate><creator>YABUUCHI NAOAKI</creator><creator>MASAHIRO YASUSHI</creator><scope>EVB</scope></search><sort><creationdate>20240117</creationdate><title>POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF</title><author>YABUUCHI NAOAKI ; MASAHIRO YASUSHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2024005520A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2024</creationdate><topic>BASIC ELECTRIC ELEMENTS</topic><topic>CHEMISTRY</topic><topic>COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F</topic><topic>ELECTRICITY</topic><topic>INORGANIC CHEMISTRY</topic><topic>METALLURGY</topic><topic>PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY</topic><toplevel>online_resources</toplevel><creatorcontrib>YABUUCHI NAOAKI</creatorcontrib><creatorcontrib>MASAHIRO YASUSHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>YABUUCHI NAOAKI</au><au>MASAHIRO YASUSHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF</title><date>2024-01-17</date><risdate>2024</risdate><abstract>To provide a positive electrode active material containing Li2RuO3 as Li transition metal composite oxide, which can achieve a high capacity and which has a high-level cycle characteristic.SOLUTION: The present invention relates to a positive electrode active material for a Li ion secondary battery, which comprises an Li2RuO3 composite oxide having a layered rock salt-type crystal structure. The Li2RuO3 composite oxide to which the invention is applied has the following two requirements: (i) a diffraction peak of (003)-plane of an ilmenite type structure arises in an X-ray diffraction pattern after an initial full-charge operation; and (ii) after an initial full-charge operation, Ru ions of 20% up to 50% of Ru ions involved in the Li2RuO3 composite oxide transfer to Li ion sites. Suitable transfer of the Ru ions contributes to keeping of an interlayer distance allows a Li ion secondary battery to exhibit a high-level cycle characteristic. The Ru ion transfer is revealed from crystal structure analysis on X-ray diffraction patterns in respective stages in an initial charge process.SELECTED DRAWING: Figure 10
【課題】Ｌｉ遷移金属複合酸化物としてＬｉ２ＲｕＯ３を含む正極活物質であって、高容量化と高サイクル性を有するものを提供する。【解決手段】本発明は、層状岩塩型結晶構造を有するＬｉ２ＲｕＯ３複合酸化物からなるＬｉイオン二次電池用正極活物質に関する。本発明で適用されるＬｉ２ＲｕＯ３複合酸化物は、（ｉ）初回満充電後のＸ線回折パターンに、イルメナイト型構造の（００３）面の回折ピークが発現すること、（ｉｉ）初回満充電後において前記Ｌｉ２ＲｕＯ３複合酸化物を構成するＲｕイオンの２０％以上５０％以下のＲｕイオンがＬｉイオンサイトへ移動すること、の２つの条件を具備する。前記のＲｕイオンの好適な移動が層間距離の維持に寄与し、高サイクル性を発揮させる。このＲｕイオンの移動は、初回充電過程における各段階のＸ線回折パターンに基づく結晶構造解析から明らかにされる。【選択図】図１０</abstract><oa>free_for_read</oa></addata></record> |
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| title | POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF |
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