Locally Concentrated Ionic Liquid Electrolytes Enabling Low‐Temperature Lithium Metal Batteries

Lithium metal is a promising anode material for next‐generation high‐energy‐density batteries but suffers from low stripping/plating Coulombic efficiency and dendritic growth particularly at sub‐zero temperatures. Herein, a poorly‐flammable, locally concentrated ionic liquid electrolyte with a wide...

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Veröffentlicht in:Angewandte Chemie International Edition 2023-08, Vol.62 (31), p.e202305840-n/a
Hauptverfasser: Liu, Xu, Mariani, Alessandro, Diemant, Thomas, Dong, Xu, Su, Po‐Hua, Passerini, Stefano
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container_start_page e202305840
container_title Angewandte Chemie International Edition
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creator Liu, Xu
Mariani, Alessandro
Diemant, Thomas
Dong, Xu
Su, Po‐Hua
Passerini, Stefano
description Lithium metal is a promising anode material for next‐generation high‐energy‐density batteries but suffers from low stripping/plating Coulombic efficiency and dendritic growth particularly at sub‐zero temperatures. Herein, a poorly‐flammable, locally concentrated ionic liquid electrolyte with a wide liquidus range extending well below 0 °C is proposed for low‐temperature lithium metal batteries. Its all‐anion Li+ solvation and phase‐nano‐segregation solution structure are sustained at low temperatures, which, together with a solid electrolyte interphase rich in inorganic compounds, enable dendrite‐free operation of lithium metal anodes at −20 °C and 0.5 mA cm−2, with a Coulombic efficiency of 98.9 %. As a result, lithium metal batteries coupling thin lithium metal anodes (4 mAh cm−2) and high‐loading LiNi0.8Co0.15Al0.05O2 cathodes (10 mg cm−2) retain 70 % of the initial capacity after 100 cycles at −20 °C. These results, as a proof of concept, demonstrate the applicability of locally concentrated ionic liquid electrolytes for low‐temperature lithium metal batteries. A locally concentrated ionic liquid electrolyte with a wide liquidus range is proposed for low‐temperature lithium metal batteries (LMBs). Its all‐anion Li+ solvation and phase‐nano‐segregation solution structure are sustained at low temperatures, which, together with a solid electrolyte interphase rich in inorganic compounds on lithium metal anodes, enable stable cycling of LMBs with high‐loading LiNi0.8Co0.15Al0.05O2 cathodes at −20 °C.
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Its all‐anion Li+ solvation and phase‐nano‐segregation solution structure are sustained at low temperatures, which, together with a solid electrolyte interphase rich in inorganic compounds on lithium metal anodes, enable stable cycling of LMBs with high‐loading LiNi0.8Co0.15Al0.05O2 cathodes at −20 °C.</description><subject>Anodes</subject><subject>Cathodes</subject><subject>Electrode materials</subject><subject>Electrolytes</subject><subject>Flammability</subject><subject>Inorganic compounds</subject><subject>Ionic Liquid Electrolytes</subject><subject>Ionic liquids</subject><subject>Liquidus</subject><subject>Lithium</subject><subject>Lithium batteries</subject><subject>Lithium Metal Anodes</subject><subject>Locally Concentrated Electrolytes</subject><subject>Low temperature</subject><subject>Low Temperature Batteries</subject><subject>Metals</subject><subject>Solid electrolytes</subject><subject>Solvation</subject><issn>1433-7851</issn><issn>1521-3773</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>24P</sourceid><recordid>eNqF0LtOwzAUBmALgbivjCgSC0uKL3Fij1AVqBRggTly3FMwcuJiO6q68Qg8I0-CUblILEw-w3d-Hf8IHRE8IhjTM9UbGFFMGeaiwBtol3BKclZVbDPNBWN5JTjZQXshPCcvBC630Q6raCFJWe4iVTutrF1lY9dr6KNXEWbZ1PVGZ7V5Gcwsm1jQ0Tu7ihCySa9aa_rHrHbL99e3e-gWkHYGD4nHJzN02Q1EZbMLFSN4A-EAbc2VDXD49e6jh8vJ_fg6r--upuPzOtcFYThnVM9KRTVXmELJCOcFqTRuyznTXKaRlG07B5l-IAWRFWupBGgLzQXRCiu2j07XuQvvXgYIselM0GCt6sENoaGCYlkKJkWiJ3_osxt8n65LqiC0qCqOkxqtlfYuBA_zZuFNp_yqIbj5LL_5LL_5KT8tHH_FDm0Hsx_-3XYCcg2WxsLqn7jm_HY6-Q3_ACSwkV8</recordid><startdate>20230801</startdate><enddate>20230801</enddate><creator>Liu, Xu</creator><creator>Mariani, Alessandro</creator><creator>Diemant, Thomas</creator><creator>Dong, Xu</creator><creator>Su, Po‐Hua</creator><creator>Passerini, Stefano</creator><general>Wiley Subscription Services, Inc</general><scope>24P</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TM</scope><scope>K9.</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-6606-5304</orcidid></search><sort><creationdate>20230801</creationdate><title>Locally Concentrated Ionic Liquid Electrolytes Enabling Low‐Temperature Lithium Metal Batteries</title><author>Liu, Xu ; Mariani, Alessandro ; Diemant, Thomas ; Dong, Xu ; Su, Po‐Hua ; Passerini, Stefano</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4130-32cd6a2c5a02e63155417c0b6f3c5917c16bbfe9880981973b29eeb4c581ca0a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Anodes</topic><topic>Cathodes</topic><topic>Electrode materials</topic><topic>Electrolytes</topic><topic>Flammability</topic><topic>Inorganic compounds</topic><topic>Ionic Liquid Electrolytes</topic><topic>Ionic liquids</topic><topic>Liquidus</topic><topic>Lithium</topic><topic>Lithium batteries</topic><topic>Lithium Metal Anodes</topic><topic>Locally Concentrated Electrolytes</topic><topic>Low temperature</topic><topic>Low Temperature Batteries</topic><topic>Metals</topic><topic>Solid electrolytes</topic><topic>Solvation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liu, Xu</creatorcontrib><creatorcontrib>Mariani, Alessandro</creatorcontrib><creatorcontrib>Diemant, Thomas</creatorcontrib><creatorcontrib>Dong, Xu</creatorcontrib><creatorcontrib>Su, Po‐Hua</creatorcontrib><creatorcontrib>Passerini, Stefano</creatorcontrib><collection>Wiley-Blackwell Open Access Titles</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Nucleic Acids Abstracts</collection><collection>ProQuest Health &amp; Medical Complete (Alumni)</collection><collection>MEDLINE - Academic</collection><jtitle>Angewandte Chemie International Edition</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liu, Xu</au><au>Mariani, Alessandro</au><au>Diemant, Thomas</au><au>Dong, Xu</au><au>Su, Po‐Hua</au><au>Passerini, Stefano</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Locally Concentrated Ionic Liquid Electrolytes Enabling Low‐Temperature Lithium Metal Batteries</atitle><jtitle>Angewandte Chemie International Edition</jtitle><addtitle>Angew Chem Int Ed Engl</addtitle><date>2023-08-01</date><risdate>2023</risdate><volume>62</volume><issue>31</issue><spage>e202305840</spage><epage>n/a</epage><pages>e202305840-n/a</pages><issn>1433-7851</issn><eissn>1521-3773</eissn><abstract>Lithium metal is a promising anode material for next‐generation high‐energy‐density batteries but suffers from low stripping/plating Coulombic efficiency and dendritic growth particularly at sub‐zero temperatures. Herein, a poorly‐flammable, locally concentrated ionic liquid electrolyte with a wide liquidus range extending well below 0 °C is proposed for low‐temperature lithium metal batteries. Its all‐anion Li+ solvation and phase‐nano‐segregation solution structure are sustained at low temperatures, which, together with a solid electrolyte interphase rich in inorganic compounds, enable dendrite‐free operation of lithium metal anodes at −20 °C and 0.5 mA cm−2, with a Coulombic efficiency of 98.9 %. As a result, lithium metal batteries coupling thin lithium metal anodes (4 mAh cm−2) and high‐loading LiNi0.8Co0.15Al0.05O2 cathodes (10 mg cm−2) retain 70 % of the initial capacity after 100 cycles at −20 °C. These results, as a proof of concept, demonstrate the applicability of locally concentrated ionic liquid electrolytes for low‐temperature lithium metal batteries. A locally concentrated ionic liquid electrolyte with a wide liquidus range is proposed for low‐temperature lithium metal batteries (LMBs). Its all‐anion Li+ solvation and phase‐nano‐segregation solution structure are sustained at low temperatures, which, together with a solid electrolyte interphase rich in inorganic compounds on lithium metal anodes, enable stable cycling of LMBs with high‐loading LiNi0.8Co0.15Al0.05O2 cathodes at −20 °C.</abstract><cop>Germany</cop><pub>Wiley Subscription Services, Inc</pub><pmid>37249166</pmid><doi>10.1002/anie.202305840</doi><tpages>9</tpages><edition>International ed. in English</edition><orcidid>https://orcid.org/0000-0002-6606-5304</orcidid><oa>free_for_read</oa></addata></record>
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source Wiley Online Library Journals Frontfile Complete
subjects Anodes
Cathodes
Electrode materials
Electrolytes
Flammability
Inorganic compounds
Ionic Liquid Electrolytes
Ionic liquids
Liquidus
Lithium
Lithium batteries
Lithium Metal Anodes
Locally Concentrated Electrolytes
Low temperature
Low Temperature Batteries
Metals
Solid electrolytes
Solvation
title Locally Concentrated Ionic Liquid Electrolytes Enabling Low‐Temperature Lithium Metal Batteries
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