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Enabling High‐Performance Potassium‐Ion Batteries by Manipulating Interfacial Chemistry
As a promising candidate for the flame‐retardant electrolyte, triethyl phosphate (TEP)/potassium bis(fluorosulfonyl)amide (KFSI)‐based electrolyte has drawn much attention in the K‐ion battery community. Although the TEP/KFSI formula at a moderate main salt concentration (normally,
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| Published in: | Advanced functional materials 2024-05, Vol.34 (21), p.n/a |
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| creator | Zhang, Haodong Wang, Huwei Li, Wei Wei, Yaojie Wen, Bohua Zhai, Dengyun Kang, Feiyu |
| description | As a promising candidate for the flame‐retardant electrolyte, triethyl phosphate (TEP)/potassium bis(fluorosulfonyl)amide (KFSI)‐based electrolyte has drawn much attention in the K‐ion battery community. Although the TEP/KFSI formula at a moderate main salt concentration (normally, |
| doi_str_mv | 10.1002/adfm.202312368 |
| format | article |
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An electrolyte additive design is proposed to address the long‐neglected high‐voltage issue, namely, the decomposition of mainstream salt, KFSI (potassium bis(fluorosulfonyl)amide)), in the K‐ion electrolytes. Experimentally, this work demonstrates charge distribution change at the interface, highlighting the role of high‐voltage additives in surface regulation.</description><identifier>ISSN: 1616-301X</identifier><identifier>EISSN: 1616-3028</identifier><identifier>DOI: 10.1002/adfm.202312368</identifier><language>eng</language><publisher>Hoboken: Wiley Subscription Services, Inc</publisher><subject>Cathodes ; Charge distribution ; electrochemical quartz crystal microbalance (EQCM) ; electrolyte design ; Electrolytes ; High voltages ; high‐voltage ; K‐ion battery ; Pigments ; Potassium ; Rechargeable batteries ; Stability ; Surface charge ; surface charge distribution</subject><ispartof>Advanced functional materials, 2024-05, Vol.34 (21), p.n/a</ispartof><rights>2024 Wiley‐VCH GmbH</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3178-53ef1c4229ede230e338bed32fcc1b9ab8d0ef54ffd9170472fbf214a756a4bf3</citedby><cites>FETCH-LOGICAL-c3178-53ef1c4229ede230e338bed32fcc1b9ab8d0ef54ffd9170472fbf214a756a4bf3</cites><orcidid>0000-0002-0343-0036 ; 0000-0001-6371-9467 ; 0000-0002-8270-3396 ; 0000-0001-7012-9887</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fadfm.202312368$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fadfm.202312368$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>315,786,790,27957,27958,50923,51032</link.rule.ids></links><search><creatorcontrib>Zhang, Haodong</creatorcontrib><creatorcontrib>Wang, Huwei</creatorcontrib><creatorcontrib>Li, Wei</creatorcontrib><creatorcontrib>Wei, Yaojie</creatorcontrib><creatorcontrib>Wen, Bohua</creatorcontrib><creatorcontrib>Zhai, Dengyun</creatorcontrib><creatorcontrib>Kang, Feiyu</creatorcontrib><title>Enabling High‐Performance Potassium‐Ion Batteries by Manipulating Interfacial Chemistry</title><title>Advanced functional materials</title><description>As a promising candidate for the flame‐retardant electrolyte, triethyl phosphate (TEP)/potassium bis(fluorosulfonyl)amide (KFSI)‐based electrolyte has drawn much attention in the K‐ion battery community. Although the TEP/KFSI formula at a moderate main salt concentration (normally, <3 m) enables the compatibility of the reactive K metal anode, the long‐standing oxidative instability of KFSI salt remains unsolved. Here, an additive strategy is reported to address the high‐voltage issue in the TEP/KFSI electrolyte, and generalize it to the other KFSI‐based electrolytes. The addition of potassium nitrate changes the surface charge distribution and effectively suppresses the decomposition of KFSI toward the high‐voltage cathode. The nitrate‐containing electrolyte enables superior stability of a 4.3 V‐class K‐ion battery, as evidenced by its 80% capacity retention over 2000 cycles (≈6 months) at the 1 C rate. Moreover, the long‐cycling stability of the graphite‐based full cell with Prussian Blue cathode is demonstrated.
An electrolyte additive design is proposed to address the long‐neglected high‐voltage issue, namely, the decomposition of mainstream salt, KFSI (potassium bis(fluorosulfonyl)amide)), in the K‐ion electrolytes. Experimentally, this work demonstrates charge distribution change at the interface, highlighting the role of high‐voltage additives in surface regulation.</description><subject>Cathodes</subject><subject>Charge distribution</subject><subject>electrochemical quartz crystal microbalance (EQCM)</subject><subject>electrolyte design</subject><subject>Electrolytes</subject><subject>High voltages</subject><subject>high‐voltage</subject><subject>K‐ion battery</subject><subject>Pigments</subject><subject>Potassium</subject><subject>Rechargeable batteries</subject><subject>Stability</subject><subject>Surface charge</subject><subject>surface charge distribution</subject><issn>1616-301X</issn><issn>1616-3028</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNqFkM9Kw0AQhxdRsFavngOeU_dPkt0ca7W20GIPCoKHZZPMtluSTd1NkNx8BJ_RJzGlUo-eZpj5fTPwIXRN8IhgTG9VoasRxZQRyhJxggYkIUnIMBWnx568nqML77cYE85ZNEBvD1ZlpbHrYGbWm-_PrxU4XbtK2RyCVd0o701b9fN5bYM71TTgDPgg64KlsmbXlqrZw3PbL7TKjSqDyQYq4xvXXaIzrUoPV791iF6mD8-TWbh4epxPxoswZ4SLMGagSR5RmkIBlGFgTGRQMKrznGSpykSBQceR1kVKOI441ZmmJFI8TlSUaTZEN4e7O1e_t-Abua1bZ_uXkuGYx1xQkfSp0SGVu9p7B1runKmU6yTBci9Q7gXKo8AeSA_Ahymh-yctx_fT5R_7A8nOeCI</recordid><startdate>20240501</startdate><enddate>20240501</enddate><creator>Zhang, Haodong</creator><creator>Wang, Huwei</creator><creator>Li, Wei</creator><creator>Wei, Yaojie</creator><creator>Wen, Bohua</creator><creator>Zhai, Dengyun</creator><creator>Kang, Feiyu</creator><general>Wiley Subscription Services, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-0343-0036</orcidid><orcidid>https://orcid.org/0000-0001-6371-9467</orcidid><orcidid>https://orcid.org/0000-0002-8270-3396</orcidid><orcidid>https://orcid.org/0000-0001-7012-9887</orcidid></search><sort><creationdate>20240501</creationdate><title>Enabling High‐Performance Potassium‐Ion Batteries by Manipulating Interfacial Chemistry</title><author>Zhang, Haodong ; Wang, Huwei ; Li, Wei ; Wei, Yaojie ; Wen, Bohua ; Zhai, Dengyun ; Kang, Feiyu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3178-53ef1c4229ede230e338bed32fcc1b9ab8d0ef54ffd9170472fbf214a756a4bf3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Cathodes</topic><topic>Charge distribution</topic><topic>electrochemical quartz crystal microbalance (EQCM)</topic><topic>electrolyte design</topic><topic>Electrolytes</topic><topic>High voltages</topic><topic>high‐voltage</topic><topic>K‐ion battery</topic><topic>Pigments</topic><topic>Potassium</topic><topic>Rechargeable batteries</topic><topic>Stability</topic><topic>Surface charge</topic><topic>surface charge distribution</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Haodong</creatorcontrib><creatorcontrib>Wang, Huwei</creatorcontrib><creatorcontrib>Li, Wei</creatorcontrib><creatorcontrib>Wei, Yaojie</creatorcontrib><creatorcontrib>Wen, Bohua</creatorcontrib><creatorcontrib>Zhai, Dengyun</creatorcontrib><creatorcontrib>Kang, Feiyu</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Advanced functional materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Haodong</au><au>Wang, Huwei</au><au>Li, Wei</au><au>Wei, Yaojie</au><au>Wen, Bohua</au><au>Zhai, Dengyun</au><au>Kang, Feiyu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Enabling High‐Performance Potassium‐Ion Batteries by Manipulating Interfacial Chemistry</atitle><jtitle>Advanced functional materials</jtitle><date>2024-05-01</date><risdate>2024</risdate><volume>34</volume><issue>21</issue><epage>n/a</epage><issn>1616-301X</issn><eissn>1616-3028</eissn><abstract>As a promising candidate for the flame‐retardant electrolyte, triethyl phosphate (TEP)/potassium bis(fluorosulfonyl)amide (KFSI)‐based electrolyte has drawn much attention in the K‐ion battery community. Although the TEP/KFSI formula at a moderate main salt concentration (normally, <3 m) enables the compatibility of the reactive K metal anode, the long‐standing oxidative instability of KFSI salt remains unsolved. Here, an additive strategy is reported to address the high‐voltage issue in the TEP/KFSI electrolyte, and generalize it to the other KFSI‐based electrolytes. The addition of potassium nitrate changes the surface charge distribution and effectively suppresses the decomposition of KFSI toward the high‐voltage cathode. The nitrate‐containing electrolyte enables superior stability of a 4.3 V‐class K‐ion battery, as evidenced by its 80% capacity retention over 2000 cycles (≈6 months) at the 1 C rate. Moreover, the long‐cycling stability of the graphite‐based full cell with Prussian Blue cathode is demonstrated.
An electrolyte additive design is proposed to address the long‐neglected high‐voltage issue, namely, the decomposition of mainstream salt, KFSI (potassium bis(fluorosulfonyl)amide)), in the K‐ion electrolytes. Experimentally, this work demonstrates charge distribution change at the interface, highlighting the role of high‐voltage additives in surface regulation.</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1002/adfm.202312368</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0002-0343-0036</orcidid><orcidid>https://orcid.org/0000-0001-6371-9467</orcidid><orcidid>https://orcid.org/0000-0002-8270-3396</orcidid><orcidid>https://orcid.org/0000-0001-7012-9887</orcidid></addata></record> |
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| subjects | Cathodes Charge distribution electrochemical quartz crystal microbalance (EQCM) electrolyte design Electrolytes High voltages high‐voltage K‐ion battery Pigments Potassium Rechargeable batteries Stability Surface charge surface charge distribution |
| title | Enabling High‐Performance Potassium‐Ion Batteries by Manipulating Interfacial Chemistry |
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