Structural and electrochemical properties of LiAlyCo1-yO2 cathode for Li rechargeable batteries
LiAlyCo1-yO2 powders were synthesised at 800 C using acrylic acid as a chelating agent. The comparison between local structure refinements of LiCoO2 and LiAl0.25Co0.75O2 during the charging and cycling process was carried out by Co K-edge XAS. Al addition was found to cause a larger local structure...
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| Veröffentlicht in: | Journal of the Electrochemical Society 2000-06, Vol.147 (6), p.2023-2028 |
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| container_issue | 6 |
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| container_title | Journal of the Electrochemical Society |
| container_volume | 147 |
| creator | YOON, W.-S LEE, K.-K KIM, K.-B |
| description | LiAlyCo1-yO2 powders were synthesised at 800 C using acrylic acid as a chelating agent. The comparison between local structure refinements of LiCoO2 and LiAl0.25Co0.75O2 during the charging and cycling process was carried out by Co K-edge XAS. Al addition was found to cause a larger local structure distortion during Li deintercalation compared to that of LiCoO2. Extended X-ray absorption fine structure refinements during Li deintercalation showed that the degree of structural disorder around Co atoms in LiAl0.25Co0.75O2 becomes higher than that of LiCoO2. XAS analysis for LiCoO2 and LiAl0.25Co0.75O2 during cycling revealed that the large capacity fading of the LiAl0.25Co0.75O2 electrode could be explained by the remaining Co4+ ions and local structure distortion. 24 refs. |
| doi_str_mv | 10.1149/1.1393479 |
| format | Article |
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The comparison between local structure refinements of LiCoO2 and LiAl0.25Co0.75O2 during the charging and cycling process was carried out by Co K-edge XAS. Al addition was found to cause a larger local structure distortion during Li deintercalation compared to that of LiCoO2. Extended X-ray absorption fine structure refinements during Li deintercalation showed that the degree of structural disorder around Co atoms in LiAl0.25Co0.75O2 becomes higher than that of LiCoO2. XAS analysis for LiCoO2 and LiAl0.25Co0.75O2 during cycling revealed that the large capacity fading of the LiAl0.25Co0.75O2 electrode could be explained by the remaining Co4+ ions and local structure distortion. 24 refs.</description><identifier>ISSN: 0013-4651</identifier><identifier>EISSN: 1945-7111</identifier><identifier>DOI: 10.1149/1.1393479</identifier><identifier>CODEN: JESOAN</identifier><language>eng</language><publisher>Pennington, NJ: Electrochemical Society</publisher><subject>Applied sciences ; Direct energy conversion and energy accumulation ; Electrical engineering. 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The comparison between local structure refinements of LiCoO2 and LiAl0.25Co0.75O2 during the charging and cycling process was carried out by Co K-edge XAS. Al addition was found to cause a larger local structure distortion during Li deintercalation compared to that of LiCoO2. Extended X-ray absorption fine structure refinements during Li deintercalation showed that the degree of structural disorder around Co atoms in LiAl0.25Co0.75O2 becomes higher than that of LiCoO2. XAS analysis for LiCoO2 and LiAl0.25Co0.75O2 during cycling revealed that the large capacity fading of the LiAl0.25Co0.75O2 electrode could be explained by the remaining Co4+ ions and local structure distortion. 24 refs.</description><subject>Applied sciences</subject><subject>Direct energy conversion and energy accumulation</subject><subject>Electrical engineering. Electrical power engineering</subject><subject>Electrical power engineering</subject><subject>Electrochemical conversion: primary and secondary batteries, fuel cells</subject><subject>Exact sciences and technology</subject><issn>0013-4651</issn><issn>1945-7111</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><recordid>eNotj0tPwzAQhC0EEqVw4B_4gLilZP2Mj1XFS6rUA3COts6mDXKbYjuH_nsswWm1u9-MZhi7h3oBoNwTLEA6qay7YDNwSlcWAC7ZrK5BVspouGY3KX2XFRplZ6z9yHHyeYoYOB47ToF8jqPf02Hw5XaK44liHijxsefrYRnOqxGq80Zwj3k_dsT7MZYHj-T3GHeE20B8izlTLKpbdtVjSHT3P-fs6-X5c_VWrTev76vlutoJrXLVN7WgWljfOW3AgReiGJHxSEiNVJKcwa1xpZtUznTSY0OicTVo1FCIOXv88y2BfyZKuT0MyVMIeKRxSq2wVklrdAEf_kFMpWAf8eiH1J7icMB4bkE2DoyVv6h6YvU</recordid><startdate>20000601</startdate><enddate>20000601</enddate><creator>YOON, W.-S</creator><creator>LEE, K.-K</creator><creator>KIM, K.-B</creator><general>Electrochemical Society</general><scope>IQODW</scope><scope>7QQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20000601</creationdate><title>Structural and electrochemical properties of LiAlyCo1-yO2 cathode for Li rechargeable batteries</title><author>YOON, W.-S ; LEE, K.-K ; KIM, K.-B</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-g254t-f802e027cd956191c22eabe6caeae8343e96ab693933496d3ca8e289015a51e83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>Applied sciences</topic><topic>Direct energy conversion and energy accumulation</topic><topic>Electrical engineering. Electrical power engineering</topic><topic>Electrical power engineering</topic><topic>Electrochemical conversion: primary and secondary batteries, fuel cells</topic><topic>Exact sciences and technology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>YOON, W.-S</creatorcontrib><creatorcontrib>LEE, K.-K</creatorcontrib><creatorcontrib>KIM, K.-B</creatorcontrib><collection>Pascal-Francis</collection><collection>Ceramic Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of the Electrochemical Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>YOON, W.-S</au><au>LEE, K.-K</au><au>KIM, K.-B</au><au>WCA</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Structural and electrochemical properties of LiAlyCo1-yO2 cathode for Li rechargeable batteries</atitle><jtitle>Journal of the Electrochemical Society</jtitle><date>2000-06-01</date><risdate>2000</risdate><volume>147</volume><issue>6</issue><spage>2023</spage><epage>2028</epage><pages>2023-2028</pages><issn>0013-4651</issn><eissn>1945-7111</eissn><coden>JESOAN</coden><abstract>LiAlyCo1-yO2 powders were synthesised at 800 C using acrylic acid as a chelating agent. The comparison between local structure refinements of LiCoO2 and LiAl0.25Co0.75O2 during the charging and cycling process was carried out by Co K-edge XAS. Al addition was found to cause a larger local structure distortion during Li deintercalation compared to that of LiCoO2. Extended X-ray absorption fine structure refinements during Li deintercalation showed that the degree of structural disorder around Co atoms in LiAl0.25Co0.75O2 becomes higher than that of LiCoO2. XAS analysis for LiCoO2 and LiAl0.25Co0.75O2 during cycling revealed that the large capacity fading of the LiAl0.25Co0.75O2 electrode could be explained by the remaining Co4+ ions and local structure distortion. 24 refs.</abstract><cop>Pennington, NJ</cop><pub>Electrochemical Society</pub><doi>10.1149/1.1393479</doi><tpages>6</tpages></addata></record> |
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| issn | 0013-4651 1945-7111 |
| language | eng |
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| source | IOP Publishing Journals |
| subjects | Applied sciences Direct energy conversion and energy accumulation Electrical engineering. Electrical power engineering Electrical power engineering Electrochemical conversion: primary and secondary batteries, fuel cells Exact sciences and technology |
| title | Structural and electrochemical properties of LiAlyCo1-yO2 cathode for Li rechargeable batteries |
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