Abnormal self-discharge in lithium-ion batteries
Lithium-ion batteries are expected to serve as a key technology for large-scale energy storage systems (ESSs), which will help satisfy recent increasing demands for renewable energy utilization. Besides their promising electrochemical performance, the low self-discharge rate (
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| Veröffentlicht in: | Energy & environmental science 2018-01, Vol.11 (4), p.970-978 |
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| container_end_page | 978 |
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| container_issue | 4 |
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| container_title | Energy & environmental science |
| container_volume | 11 |
| creator | Seong, Won Mo Park, Kyu-Young Lee, Myeong Hwan Moon, Sehwan Oh, Kyungbae Park, Hyeokjun Lee, Sechan Kang, Kisuk |
| description | Lithium-ion batteries are expected to serve as a key technology for large-scale energy storage systems (ESSs), which will help satisfy recent increasing demands for renewable energy utilization. Besides their promising electrochemical performance, the low self-discharge rate ( |
| doi_str_mv | 10.1039/C8EE00186C |
| format | Article |
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Besides their promising electrochemical performance, the low self-discharge rate (<5% of the stored capacity over 1 month) of lithium-ion batteries is one of their most significant advantages for ESSs. Herein, contrary to conventional belief, we report that the self-discharge of LIBs can be abnormally accelerated when the battery has been exposed even to a routine short-term thermal exposure. We demonstrate that this thermal ‘history’ in addition to the temperature itself is memorized in the battery and accelerates the self-discharge rate. The series of characterizations performed in our work reveal that the electrolyte salt acts as a strong oxidizing agent by vigorously damaging the surface of the cathode, producing an internal ‘parasitic’ lithium source that continuously supplies lithium for the self-discharge. Although it is widely known that battery operation at elevated temperature generally induces faster degradation of capacity over multiple cycles, the key finding here is that not only the operation temperature but also the ‘thermal history’ of the battery should be carefully considered because this history remains and continues to affect the self-discharge rate afterwards. The self-discharge of LIBs has remained largely neglected; however, our findings suggest that close attention must be paid to the self-discharge of LIBs applied to large-scale ESSs, which, unlike mobile electronic devices, will be exposed to various outdoor temperature conditions.</description><identifier>ISSN: 1754-5692</identifier><identifier>EISSN: 1754-5706</identifier><identifier>DOI: 10.1039/C8EE00186C</identifier><language>eng</language><publisher>Cambridge: Royal Society of Chemistry</publisher><subject>Batteries ; Discharge ; Electrochemical analysis ; Electrochemistry ; Electronic devices ; Electronic equipment ; Energy consumption ; Energy storage ; Energy utilization ; Exposure ; High temperature ; Lithium ; Lithium-ion batteries ; Oxidation ; Oxidizing agents ; Parasitics (electronics) ; Rechargeable batteries ; Renewable energy ; Storage batteries ; Storage systems ; Temperature effects</subject><ispartof>Energy & environmental science, 2018-01, Vol.11 (4), p.970-978</ispartof><rights>Copyright Royal Society of Chemistry 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c296t-b0a416d905fe0a9968487b6d8d393891c0c6ae1b43e20e3ac8d6369873cea62c3</citedby><cites>FETCH-LOGICAL-c296t-b0a416d905fe0a9968487b6d8d393891c0c6ae1b43e20e3ac8d6369873cea62c3</cites><orcidid>0000-0002-8696-1886</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,781,785,27926,27927</link.rule.ids></links><search><creatorcontrib>Seong, Won Mo</creatorcontrib><creatorcontrib>Park, Kyu-Young</creatorcontrib><creatorcontrib>Lee, Myeong Hwan</creatorcontrib><creatorcontrib>Moon, Sehwan</creatorcontrib><creatorcontrib>Oh, Kyungbae</creatorcontrib><creatorcontrib>Park, Hyeokjun</creatorcontrib><creatorcontrib>Lee, Sechan</creatorcontrib><creatorcontrib>Kang, Kisuk</creatorcontrib><title>Abnormal self-discharge in lithium-ion batteries</title><title>Energy & environmental science</title><description>Lithium-ion batteries are expected to serve as a key technology for large-scale energy storage systems (ESSs), which will help satisfy recent increasing demands for renewable energy utilization. Besides their promising electrochemical performance, the low self-discharge rate (<5% of the stored capacity over 1 month) of lithium-ion batteries is one of their most significant advantages for ESSs. Herein, contrary to conventional belief, we report that the self-discharge of LIBs can be abnormally accelerated when the battery has been exposed even to a routine short-term thermal exposure. We demonstrate that this thermal ‘history’ in addition to the temperature itself is memorized in the battery and accelerates the self-discharge rate. The series of characterizations performed in our work reveal that the electrolyte salt acts as a strong oxidizing agent by vigorously damaging the surface of the cathode, producing an internal ‘parasitic’ lithium source that continuously supplies lithium for the self-discharge. Although it is widely known that battery operation at elevated temperature generally induces faster degradation of capacity over multiple cycles, the key finding here is that not only the operation temperature but also the ‘thermal history’ of the battery should be carefully considered because this history remains and continues to affect the self-discharge rate afterwards. The self-discharge of LIBs has remained largely neglected; however, our findings suggest that close attention must be paid to the self-discharge of LIBs applied to large-scale ESSs, which, unlike mobile electronic devices, will be exposed to various outdoor temperature conditions.</description><subject>Batteries</subject><subject>Discharge</subject><subject>Electrochemical analysis</subject><subject>Electrochemistry</subject><subject>Electronic devices</subject><subject>Electronic equipment</subject><subject>Energy consumption</subject><subject>Energy storage</subject><subject>Energy utilization</subject><subject>Exposure</subject><subject>High temperature</subject><subject>Lithium</subject><subject>Lithium-ion batteries</subject><subject>Oxidation</subject><subject>Oxidizing agents</subject><subject>Parasitics (electronics)</subject><subject>Rechargeable batteries</subject><subject>Renewable energy</subject><subject>Storage batteries</subject><subject>Storage systems</subject><subject>Temperature effects</subject><issn>1754-5692</issn><issn>1754-5706</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNpFkE1LxDAURYMoOI5u_AUFd0L1JWlfkuVQ6igMuNF1SNNXJ0M_xqSz8N87MoqrexeHe-EwdsvhgYM0j5WuawCusTpjC67KIi8V4PlfRyMu2VVKOwAUoMyCwaoZpzi4PkvUd3kbkt-6-EFZGLM-zNtwGPIwjVnj5plioHTNLjrXJ7r5zSV7f6rfqud887p-qVab3AuDc96AKzi2BsqOwBmDutCqwVa30khtuAePjnhTSBJA0nndokSjlfTkUHi5ZHen3X2cPg-UZrubDnE8XloBQvFCSQVH6v5E-TilFKmz-xgGF78sB_tjxP4bkd-2v1Fu</recordid><startdate>20180101</startdate><enddate>20180101</enddate><creator>Seong, Won Mo</creator><creator>Park, Kyu-Young</creator><creator>Lee, Myeong Hwan</creator><creator>Moon, Sehwan</creator><creator>Oh, Kyungbae</creator><creator>Park, Hyeokjun</creator><creator>Lee, Sechan</creator><creator>Kang, Kisuk</creator><general>Royal Society of Chemistry</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7ST</scope><scope>7TB</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>L7M</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0002-8696-1886</orcidid></search><sort><creationdate>20180101</creationdate><title>Abnormal self-discharge in lithium-ion batteries</title><author>Seong, Won Mo ; 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Besides their promising electrochemical performance, the low self-discharge rate (<5% of the stored capacity over 1 month) of lithium-ion batteries is one of their most significant advantages for ESSs. Herein, contrary to conventional belief, we report that the self-discharge of LIBs can be abnormally accelerated when the battery has been exposed even to a routine short-term thermal exposure. We demonstrate that this thermal ‘history’ in addition to the temperature itself is memorized in the battery and accelerates the self-discharge rate. The series of characterizations performed in our work reveal that the electrolyte salt acts as a strong oxidizing agent by vigorously damaging the surface of the cathode, producing an internal ‘parasitic’ lithium source that continuously supplies lithium for the self-discharge. Although it is widely known that battery operation at elevated temperature generally induces faster degradation of capacity over multiple cycles, the key finding here is that not only the operation temperature but also the ‘thermal history’ of the battery should be carefully considered because this history remains and continues to affect the self-discharge rate afterwards. The self-discharge of LIBs has remained largely neglected; however, our findings suggest that close attention must be paid to the self-discharge of LIBs applied to large-scale ESSs, which, unlike mobile electronic devices, will be exposed to various outdoor temperature conditions.</abstract><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><doi>10.1039/C8EE00186C</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-8696-1886</orcidid></addata></record> |
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| ispartof | Energy & environmental science, 2018-01, Vol.11 (4), p.970-978 |
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| language | eng |
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| source | Royal Society Of Chemistry Journals |
| subjects | Batteries Discharge Electrochemical analysis Electrochemistry Electronic devices Electronic equipment Energy consumption Energy storage Energy utilization Exposure High temperature Lithium Lithium-ion batteries Oxidation Oxidizing agents Parasitics (electronics) Rechargeable batteries Renewable energy Storage batteries Storage systems Temperature effects |
| title | Abnormal self-discharge in lithium-ion batteries |
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