TiO2-coated LiCoO2 electrodes fabricated by a sputtering deposition method for lithium-ion batteries with enhanced electrochemical performance
We fabricated lithium cobalt oxide (LiCoO2, LCO) electrodes in the absence and presence of TiO2 layers as cathodes for lithium-ion batteries (LIBs) using a sputtering deposition method under an Ar atmosphere. In particular, TiO2 coating layers on sputtered LCO electrodes were directly deposited in a...
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| Veröffentlicht in: | RSC advances 2019-01, Vol.9 (14), p.7903-7907 |
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| container_title | RSC advances |
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| creator | Sang-Hyun, Moon Min-Cheol, Kim Eun-Soo, Kim Yeon-Kyung Shin Lee, Ji-Eun Choi, Sojeong Park, Kyung-Won |
| description | We fabricated lithium cobalt oxide (LiCoO2, LCO) electrodes in the absence and presence of TiO2 layers as cathodes for lithium-ion batteries (LIBs) using a sputtering deposition method under an Ar atmosphere. In particular, TiO2 coating layers on sputtered LCO electrodes were directly deposited in a layer-by-layer form with varying TiO2 sputtering times from 60 to 120 s. These sputtered electrodes were heated at 600 °C in an air atmosphere for 3 h. The thicknesses of TiO2 layers in TiO2-coated LCO electrodes were controlled from ∼2 to ∼10 nm. These TiO2-coated LCO electrodes exhibited superior electrochemical performance, i.e. high capacities (93–107 mA h g−1@0.5C), improved retention of >60% after 100 cycles, and high-rate cycling properties (64 mA h g−1@1C after 100 cycles). Such an improved performance of TiO2-coated LCO electrodes was found to be attributed to relieved volumetric expansion of LCO and protection of LCO electrodes against HF generated during cycling. |
| doi_str_mv | 10.1039/c8ra10451d |
| format | Article |
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In particular, TiO2 coating layers on sputtered LCO electrodes were directly deposited in a layer-by-layer form with varying TiO2 sputtering times from 60 to 120 s. These sputtered electrodes were heated at 600 °C in an air atmosphere for 3 h. The thicknesses of TiO2 layers in TiO2-coated LCO electrodes were controlled from ∼2 to ∼10 nm. These TiO2-coated LCO electrodes exhibited superior electrochemical performance, i.e. high capacities (93–107 mA h g−1@0.5C), improved retention of >60% after 100 cycles, and high-rate cycling properties (64 mA h g−1@1C after 100 cycles). Such an improved performance of TiO2-coated LCO electrodes was found to be attributed to relieved volumetric expansion of LCO and protection of LCO electrodes against HF generated during cycling.</description><subject>Cathode sputtering</subject><subject>Chemistry</subject><subject>Coated electrodes</subject><subject>Cobalt oxides</subject><subject>Cycles</subject><subject>Deposition</subject><subject>Electrochemical analysis</subject><subject>Electrodes</subject><subject>Lithium</subject><subject>Lithium compounds</subject><subject>Lithium-ion batteries</subject><subject>Protective coatings</subject><subject>Rechargeable batteries</subject><subject>Thickness</subject><subject>Titanium dioxide</subject><issn>2046-2069</issn><issn>2046-2069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNpdj8Fu1TAQRS0EolXphi-wxIZNYDyO7WSDhJ4oID3pbco6cpxJ4yqJg-2A-hN8M255C2A2M7r3zpEuY68FvBMg2_euiVZArcTwjF0i1LpC0O3zv-4Ldp3SPZTRSqAWL9mFVAoFQnvJft36E1Yu2EwDP_pDOCGnmVyOYaDER9tH757M_oFbnrY9Z4p-veMDbSH57MPKF8pTGPgYIp99nvy-VI9yb5-yBfOzqJzWya6ukM58N9FS2DPfKJbX5dF8xV6Mdk50fd5X7NvNp9vDl-p4-vz18PFYbRJMrsgoIUg5FAoUAIq6NdgoXXoBkeslGpK9qRGMGRs7upI3GmojoR-bkeQV-_CHu-39QoOjNUc7d1v0i40PXbC--9dZ_dTdhR9dC1pgLQrg7RkQw_edUu4WnxzNs10p7KlDrQU0gA2U6Jv_ovdhj2up16EoPDS6kfI3cJ6OCg</recordid><startdate>20190101</startdate><enddate>20190101</enddate><creator>Sang-Hyun, Moon</creator><creator>Min-Cheol, Kim</creator><creator>Eun-Soo, Kim</creator><creator>Yeon-Kyung Shin</creator><creator>Lee, Ji-Eun</creator><creator>Choi, Sojeong</creator><creator>Park, Kyung-Won</creator><general>Royal Society of Chemistry</general><general>The Royal Society of Chemistry</general><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>20190101</creationdate><title>TiO2-coated LiCoO2 electrodes fabricated by a sputtering deposition method for lithium-ion batteries with enhanced electrochemical performance</title><author>Sang-Hyun, Moon ; Min-Cheol, Kim ; Eun-Soo, Kim ; Yeon-Kyung Shin ; Lee, Ji-Eun ; Choi, Sojeong ; Park, Kyung-Won</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p307t-e7511e5c21505002149728563550eecb327e3b742077f8afc7517604730bf8fe3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Cathode sputtering</topic><topic>Chemistry</topic><topic>Coated electrodes</topic><topic>Cobalt oxides</topic><topic>Cycles</topic><topic>Deposition</topic><topic>Electrochemical analysis</topic><topic>Electrodes</topic><topic>Lithium</topic><topic>Lithium compounds</topic><topic>Lithium-ion batteries</topic><topic>Protective coatings</topic><topic>Rechargeable batteries</topic><topic>Thickness</topic><topic>Titanium dioxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sang-Hyun, Moon</creatorcontrib><creatorcontrib>Min-Cheol, Kim</creatorcontrib><creatorcontrib>Eun-Soo, Kim</creatorcontrib><creatorcontrib>Yeon-Kyung Shin</creatorcontrib><creatorcontrib>Lee, Ji-Eun</creatorcontrib><creatorcontrib>Choi, Sojeong</creatorcontrib><creatorcontrib>Park, Kyung-Won</creatorcontrib><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>RSC advances</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sang-Hyun, Moon</au><au>Min-Cheol, Kim</au><au>Eun-Soo, Kim</au><au>Yeon-Kyung Shin</au><au>Lee, Ji-Eun</au><au>Choi, Sojeong</au><au>Park, Kyung-Won</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>TiO2-coated LiCoO2 electrodes fabricated by a sputtering deposition method for lithium-ion batteries with enhanced electrochemical performance</atitle><jtitle>RSC advances</jtitle><date>2019-01-01</date><risdate>2019</risdate><volume>9</volume><issue>14</issue><spage>7903</spage><epage>7907</epage><pages>7903-7907</pages><issn>2046-2069</issn><eissn>2046-2069</eissn><abstract>We fabricated lithium cobalt oxide (LiCoO2, LCO) electrodes in the absence and presence of TiO2 layers as cathodes for lithium-ion batteries (LIBs) using a sputtering deposition method under an Ar atmosphere. In particular, TiO2 coating layers on sputtered LCO electrodes were directly deposited in a layer-by-layer form with varying TiO2 sputtering times from 60 to 120 s. These sputtered electrodes were heated at 600 °C in an air atmosphere for 3 h. The thicknesses of TiO2 layers in TiO2-coated LCO electrodes were controlled from ∼2 to ∼10 nm. These TiO2-coated LCO electrodes exhibited superior electrochemical performance, i.e. high capacities (93–107 mA h g−1@0.5C), improved retention of >60% after 100 cycles, and high-rate cycling properties (64 mA h g−1@1C after 100 cycles). Such an improved performance of TiO2-coated LCO electrodes was found to be attributed to relieved volumetric expansion of LCO and protection of LCO electrodes against HF generated during cycling.</abstract><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><pmid>35521209</pmid><doi>10.1039/c8ra10451d</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record> |
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| source | DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central Open Access; PubMed Central |
| subjects | Cathode sputtering Chemistry Coated electrodes Cobalt oxides Cycles Deposition Electrochemical analysis Electrodes Lithium Lithium compounds Lithium-ion batteries Protective coatings Rechargeable batteries Thickness Titanium dioxide |
| title | TiO2-coated LiCoO2 electrodes fabricated by a sputtering deposition method for lithium-ion batteries with enhanced electrochemical performance |
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