Intrinsically Nonflammable Ionic Liquid‐Based Localized Highly Concentrated Electrolytes Enable High‐Performance Li‐Metal Batteries
The development of high‐performance Li‐metal batteries (LMBs) requires advanced electrolytes that simultaneously possess high safety, high ionic conductivity, wide electrochemical window, and good ability to suppress Li dendrite growth. Herein an intrinsically nonflammable ionic liquid‐based localiz...
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| creator | Wang, Zhicheng Zhang, Fengrui Sun, Yiyang Zheng, Lei Shen, Yanbin Fu, Daosong Li, Wanfei Pan, Anran Wang, Lei Xu, Jingjing Hu, Jianchen Wu, Xiaodong |
| description | The development of high‐performance Li‐metal batteries (LMBs) requires advanced electrolytes that simultaneously possess high safety, high ionic conductivity, wide electrochemical window, and good ability to suppress Li dendrite growth. Herein an intrinsically nonflammable ionic liquid‐based localized highly concentrated electrolyte (LHCE) composed of lithium bis(fluorosulfonyl)imide (LiFSI) salt, N‐methyl‐N‐propyl‐piperidinium bis(fluorosulfonyl)imide ([PP13][FSI]) as ionic liquid solvent, and 1,1,2,2‐tetrafluoroethyl‐2,2,3,3‐tetrafluoropropylether (HFE) as diluent solvent is designed. The introduction of HFE greatly decreases the viscosity and cost of the pure ionic liquid electrolyte, improves its ionic conductivity, and enhances its ability to wet the separator surface. The Li+ solvation structure, Li deposition behavior, and formation of the solid electrolyte interphase (SEI) layer in LHCE are systematically investigated by using Raman spectroscopy, theoretical simulations, scanning electron microscopy, and X‐ray photoelectron spectroscopy. A rational mechanism is suggested for the stable SEI formation and the homogeneous Li deposition behavior. Due to its excellent ability to suppress Li dendrites, the LHCE exhibits a high average Coulombic efficiency (99.4% over 800 cycles in the Cu/Li cell), extremely stable cycling performance (10 mA cm−2 over 5000 cycles in the Li/Li symmetric cell), and excellent cycling performance and rate capability in the LMB systems of LiFePO4 (LFP)/Li and LFP/Li@Cu.
An intrinsically nonflammable localized highly concentrated electrolyte (LHCE) containing ionic liquid solvent (IL) and HFE diluent solvent is reported. The introduction of HFE greatly decreases the viscosity and cost of pure IL electrolyte, improves its ionic conductivity and its ability to wet the separator surface. Arising from homogeneous Li deposition behavior, the LHCE shows excellent cell performance in Li‐metal batteries. |
| doi_str_mv | 10.1002/aenm.202003752 |
| format | Article |
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An intrinsically nonflammable localized highly concentrated electrolyte (LHCE) containing ionic liquid solvent (IL) and HFE diluent solvent is reported. The introduction of HFE greatly decreases the viscosity and cost of pure IL electrolyte, improves its ionic conductivity and its ability to wet the separator surface. Arising from homogeneous Li deposition behavior, the LHCE shows excellent cell performance in Li‐metal batteries.</description><identifier>ISSN: 1614-6832</identifier><identifier>EISSN: 1614-6840</identifier><identifier>DOI: 10.1002/aenm.202003752</identifier><language>eng</language><publisher>Weinheim: Wiley Subscription Services, Inc</publisher><subject>Cycles ; Dendritic structure ; Deposition ; Electrolytes ; Ion currents ; Ionic liquids ; Ions ; Lithium ; li‐metal batteries ; localized highly concentrated electrolytes ; nonflammable electrolytes ; Photoelectrons ; Raman spectroscopy ; safe electrolytes ; Separators ; Solid electrolytes ; Solvation ; Solvents ; Spectrum analysis</subject><ispartof>Advanced energy materials, 2021-05, Vol.11 (17), p.n/a</ispartof><rights>2021 Wiley‐VCH GmbH</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3562-60f4ab0d67146c3805799b6f99b2dcaac69a4e2a3eecf074f858de70f81fc17a3</citedby><cites>FETCH-LOGICAL-c3562-60f4ab0d67146c3805799b6f99b2dcaac69a4e2a3eecf074f858de70f81fc17a3</cites><orcidid>0000-0002-1050-7660</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%2Faenm.202003752$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Faenm.202003752$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1416,27915,27916,45565,45566</link.rule.ids></links><search><creatorcontrib>Wang, Zhicheng</creatorcontrib><creatorcontrib>Zhang, Fengrui</creatorcontrib><creatorcontrib>Sun, Yiyang</creatorcontrib><creatorcontrib>Zheng, Lei</creatorcontrib><creatorcontrib>Shen, Yanbin</creatorcontrib><creatorcontrib>Fu, Daosong</creatorcontrib><creatorcontrib>Li, Wanfei</creatorcontrib><creatorcontrib>Pan, Anran</creatorcontrib><creatorcontrib>Wang, Lei</creatorcontrib><creatorcontrib>Xu, Jingjing</creatorcontrib><creatorcontrib>Hu, Jianchen</creatorcontrib><creatorcontrib>Wu, Xiaodong</creatorcontrib><title>Intrinsically Nonflammable Ionic Liquid‐Based Localized Highly Concentrated Electrolytes Enable High‐Performance Li‐Metal Batteries</title><title>Advanced energy materials</title><description>The development of high‐performance Li‐metal batteries (LMBs) requires advanced electrolytes that simultaneously possess high safety, high ionic conductivity, wide electrochemical window, and good ability to suppress Li dendrite growth. Herein an intrinsically nonflammable ionic liquid‐based localized highly concentrated electrolyte (LHCE) composed of lithium bis(fluorosulfonyl)imide (LiFSI) salt, N‐methyl‐N‐propyl‐piperidinium bis(fluorosulfonyl)imide ([PP13][FSI]) as ionic liquid solvent, and 1,1,2,2‐tetrafluoroethyl‐2,2,3,3‐tetrafluoropropylether (HFE) as diluent solvent is designed. The introduction of HFE greatly decreases the viscosity and cost of the pure ionic liquid electrolyte, improves its ionic conductivity, and enhances its ability to wet the separator surface. The Li+ solvation structure, Li deposition behavior, and formation of the solid electrolyte interphase (SEI) layer in LHCE are systematically investigated by using Raman spectroscopy, theoretical simulations, scanning electron microscopy, and X‐ray photoelectron spectroscopy. A rational mechanism is suggested for the stable SEI formation and the homogeneous Li deposition behavior. Due to its excellent ability to suppress Li dendrites, the LHCE exhibits a high average Coulombic efficiency (99.4% over 800 cycles in the Cu/Li cell), extremely stable cycling performance (10 mA cm−2 over 5000 cycles in the Li/Li symmetric cell), and excellent cycling performance and rate capability in the LMB systems of LiFePO4 (LFP)/Li and LFP/Li@Cu.
An intrinsically nonflammable localized highly concentrated electrolyte (LHCE) containing ionic liquid solvent (IL) and HFE diluent solvent is reported. The introduction of HFE greatly decreases the viscosity and cost of pure IL electrolyte, improves its ionic conductivity and its ability to wet the separator surface. Arising from homogeneous Li deposition behavior, the LHCE shows excellent cell performance in Li‐metal batteries.</description><subject>Cycles</subject><subject>Dendritic structure</subject><subject>Deposition</subject><subject>Electrolytes</subject><subject>Ion currents</subject><subject>Ionic liquids</subject><subject>Ions</subject><subject>Lithium</subject><subject>li‐metal batteries</subject><subject>localized highly concentrated electrolytes</subject><subject>nonflammable electrolytes</subject><subject>Photoelectrons</subject><subject>Raman spectroscopy</subject><subject>safe electrolytes</subject><subject>Separators</subject><subject>Solid electrolytes</subject><subject>Solvation</subject><subject>Solvents</subject><subject>Spectrum analysis</subject><issn>1614-6832</issn><issn>1614-6840</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNqFkD1PwzAURSMEEhV0ZY7E3OKPfI5tFWiltjDAHL06z-DKiVs7FQoTKxu_kV-CS1EZ8WA_PZ1zLd0guKJkSAlhN4BNPWSEEcLTmJ0EPZrQaJBkETk9zpydB33n1sSfKKeE817wMWtaqxqnBGjdhUvTSA11DSuN4cw0SoRztd2p6uv9cwwOq3BuPKne_DRVzy9emZhGoA-B1u8KjaK1RncturBofmL2nNcf0Epja_C0z_SLBbagwzG0LVqF7jI4k6Ad9n_fi-DptnicTAfz-7vZZDQfCB4nbJAQGcGKVElKo0TwjMRpnq8S6S9WCQCR5BAhA44oJEkjmcVZhSmRGZWCpsAvgutD7saa7Q5dW67Nzjb-y5LFjLGcs4x4anighDXOWZTlxqoabFdSUu4bL_eNl8fGvZAfhFelsfuHLkfFcvHnfgMFkIox</recordid><startdate>20210501</startdate><enddate>20210501</enddate><creator>Wang, Zhicheng</creator><creator>Zhang, Fengrui</creator><creator>Sun, Yiyang</creator><creator>Zheng, Lei</creator><creator>Shen, Yanbin</creator><creator>Fu, Daosong</creator><creator>Li, Wanfei</creator><creator>Pan, Anran</creator><creator>Wang, Lei</creator><creator>Xu, Jingjing</creator><creator>Hu, Jianchen</creator><creator>Wu, Xiaodong</creator><general>Wiley Subscription Services, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7TB</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-1050-7660</orcidid></search><sort><creationdate>20210501</creationdate><title>Intrinsically Nonflammable Ionic Liquid‐Based Localized Highly Concentrated Electrolytes Enable High‐Performance Li‐Metal Batteries</title><author>Wang, Zhicheng ; Zhang, Fengrui ; Sun, Yiyang ; Zheng, Lei ; Shen, Yanbin ; Fu, Daosong ; Li, Wanfei ; Pan, Anran ; Wang, Lei ; Xu, Jingjing ; Hu, Jianchen ; Wu, Xiaodong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3562-60f4ab0d67146c3805799b6f99b2dcaac69a4e2a3eecf074f858de70f81fc17a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Cycles</topic><topic>Dendritic structure</topic><topic>Deposition</topic><topic>Electrolytes</topic><topic>Ion currents</topic><topic>Ionic liquids</topic><topic>Ions</topic><topic>Lithium</topic><topic>li‐metal batteries</topic><topic>localized highly concentrated electrolytes</topic><topic>nonflammable electrolytes</topic><topic>Photoelectrons</topic><topic>Raman spectroscopy</topic><topic>safe electrolytes</topic><topic>Separators</topic><topic>Solid electrolytes</topic><topic>Solvation</topic><topic>Solvents</topic><topic>Spectrum analysis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Zhicheng</creatorcontrib><creatorcontrib>Zhang, Fengrui</creatorcontrib><creatorcontrib>Sun, Yiyang</creatorcontrib><creatorcontrib>Zheng, Lei</creatorcontrib><creatorcontrib>Shen, Yanbin</creatorcontrib><creatorcontrib>Fu, Daosong</creatorcontrib><creatorcontrib>Li, Wanfei</creatorcontrib><creatorcontrib>Pan, Anran</creatorcontrib><creatorcontrib>Wang, Lei</creatorcontrib><creatorcontrib>Xu, Jingjing</creatorcontrib><creatorcontrib>Hu, Jianchen</creatorcontrib><creatorcontrib>Wu, Xiaodong</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Advanced energy materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Zhicheng</au><au>Zhang, Fengrui</au><au>Sun, Yiyang</au><au>Zheng, Lei</au><au>Shen, Yanbin</au><au>Fu, Daosong</au><au>Li, Wanfei</au><au>Pan, Anran</au><au>Wang, Lei</au><au>Xu, Jingjing</au><au>Hu, Jianchen</au><au>Wu, Xiaodong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Intrinsically Nonflammable Ionic Liquid‐Based Localized Highly Concentrated Electrolytes Enable High‐Performance Li‐Metal Batteries</atitle><jtitle>Advanced energy materials</jtitle><date>2021-05-01</date><risdate>2021</risdate><volume>11</volume><issue>17</issue><epage>n/a</epage><issn>1614-6832</issn><eissn>1614-6840</eissn><abstract>The development of high‐performance Li‐metal batteries (LMBs) requires advanced electrolytes that simultaneously possess high safety, high ionic conductivity, wide electrochemical window, and good ability to suppress Li dendrite growth. Herein an intrinsically nonflammable ionic liquid‐based localized highly concentrated electrolyte (LHCE) composed of lithium bis(fluorosulfonyl)imide (LiFSI) salt, N‐methyl‐N‐propyl‐piperidinium bis(fluorosulfonyl)imide ([PP13][FSI]) as ionic liquid solvent, and 1,1,2,2‐tetrafluoroethyl‐2,2,3,3‐tetrafluoropropylether (HFE) as diluent solvent is designed. The introduction of HFE greatly decreases the viscosity and cost of the pure ionic liquid electrolyte, improves its ionic conductivity, and enhances its ability to wet the separator surface. The Li+ solvation structure, Li deposition behavior, and formation of the solid electrolyte interphase (SEI) layer in LHCE are systematically investigated by using Raman spectroscopy, theoretical simulations, scanning electron microscopy, and X‐ray photoelectron spectroscopy. A rational mechanism is suggested for the stable SEI formation and the homogeneous Li deposition behavior. Due to its excellent ability to suppress Li dendrites, the LHCE exhibits a high average Coulombic efficiency (99.4% over 800 cycles in the Cu/Li cell), extremely stable cycling performance (10 mA cm−2 over 5000 cycles in the Li/Li symmetric cell), and excellent cycling performance and rate capability in the LMB systems of LiFePO4 (LFP)/Li and LFP/Li@Cu.
An intrinsically nonflammable localized highly concentrated electrolyte (LHCE) containing ionic liquid solvent (IL) and HFE diluent solvent is reported. The introduction of HFE greatly decreases the viscosity and cost of pure IL electrolyte, improves its ionic conductivity and its ability to wet the separator surface. Arising from homogeneous Li deposition behavior, the LHCE shows excellent cell performance in Li‐metal batteries.</abstract><cop>Weinheim</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1002/aenm.202003752</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0002-1050-7660</orcidid></addata></record> |
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| subjects | Cycles Dendritic structure Deposition Electrolytes Ion currents Ionic liquids Ions Lithium li‐metal batteries localized highly concentrated electrolytes nonflammable electrolytes Photoelectrons Raman spectroscopy safe electrolytes Separators Solid electrolytes Solvation Solvents Spectrum analysis |
| title | Intrinsically Nonflammable Ionic Liquid‐Based Localized Highly Concentrated Electrolytes Enable High‐Performance Li‐Metal Batteries |
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