A highly concentrated electrolyte for high-efficiency potassium metal batteries
We report a highly concentrated electrolyte consisting of 4 M potassium bis(fluorosulfonyl)imide (KFSI) in diethylene glycol dimethyl ether (DEGDME). This new electrolyte enables stable cycling of K metal anodes with a high CE (over 98% over 400 cycles), and excellent capacity retention (99.7% after...
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| Published in | Chemical communications (Cambridge, England) Vol. 57; no. 8; pp. 134 - 137 |
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| Main Authors | , , , , , , |
| Format | Journal Article |
| Language | English |
| Published |
England
Royal Society of Chemistry
01.02.2021
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| Subjects | |
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| Abstract | We report a highly concentrated electrolyte consisting of 4 M potassium bis(fluorosulfonyl)imide (KFSI) in diethylene glycol dimethyl ether (DEGDME). This new electrolyte enables stable cycling of K metal anodes with a high CE (over 98% over 400 cycles), and excellent capacity retention (99.7% after 500 cycles) of K||potassium Prussian blue (KPB) batteries.
A highly concentrated electrolyte enables dendrite-free cycling of K metal anodes with a high CE (over 98% over 400 cycles). |
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| AbstractList | We report a highly concentrated electrolyte consisting of 4 M potassium bis(fluorosulfonyl)imide (KFSI) in diethylene glycol dimethyl ether (DEGDME). This new electrolyte enables stable cycling of K metal anodes with a high CE (over 98% over 400 cycles), and excellent capacity retention (99.7% after 500 cycles) of K||potassium Prussian blue (KPB) batteries. We report a highly concentrated electrolyte consisting of 4 M potassium bis(fluorosulfonyl)imide (KFSI) in diethylene glycol dimethyl ether (DEGDME). This new electrolyte enables stable cycling of K metal anodes with a high CE (over 98% over 400 cycles), and excellent capacity retention (99.7% after 500 cycles) of K||potassium Prussian blue (KPB) batteries. A highly concentrated electrolyte enables dendrite-free cycling of K metal anodes with a high CE (over 98% over 400 cycles). We report a highly concentrated electrolyte consisting of 4 M potassium bis(fluorosulfonyl)imide (KFSI) in diethylene glycol dimethyl ether (DEGDME). This new electrolyte enables stable cycling of K metal anodes with a high CE (over 98% over 400 cycles), and excellent capacity retention (99.7% after 500 cycles) of K||potassium Prussian blue (KPB) batteries.We report a highly concentrated electrolyte consisting of 4 M potassium bis(fluorosulfonyl)imide (KFSI) in diethylene glycol dimethyl ether (DEGDME). This new electrolyte enables stable cycling of K metal anodes with a high CE (over 98% over 400 cycles), and excellent capacity retention (99.7% after 500 cycles) of K||potassium Prussian blue (KPB) batteries. |
| Author | Zhang, Biao Hu, Junyang Zhang, Haodong Zhai, Dengyun Xu, Wenxin Wang, Huwei Kang, Feiyu |
| AuthorAffiliation | Tsinghua University The Hong Kong Polytechnic University Kowloon Tsinghua Shenzhen International Graduate School Advanced Materials Institute Department of Applied Physics Shenzhen Key Laboratory for Graphene-Based Materials and Engineering Laboratory for Functionalized Carbon Materials Shenzhen Environmental Science and New Energy Technology Engineering Laboratory Tsinghua-Berkeley Shenzhen Institute (TBSI) Shenzhen Geim Graphene Center Graduate School at Shenzhen |
| AuthorAffiliation_xml | – name: Shenzhen Environmental Science and New Energy Technology Engineering Laboratory – name: Department of Applied Physics – name: Advanced Materials Institute – name: Shenzhen Geim Graphene Center – name: Tsinghua University – name: Shenzhen Key Laboratory for Graphene-Based Materials and Engineering Laboratory for Functionalized Carbon Materials – name: Tsinghua Shenzhen International Graduate School – name: Graduate School at Shenzhen – name: Tsinghua-Berkeley Shenzhen Institute (TBSI) – name: The Hong Kong Polytechnic University Kowloon |
| Author_xml | – sequence: 1 givenname: Wenxin surname: Xu fullname: Xu, Wenxin – sequence: 2 givenname: Huwei surname: Wang fullname: Wang, Huwei – sequence: 3 givenname: Junyang surname: Hu fullname: Hu, Junyang – sequence: 4 givenname: Haodong surname: Zhang fullname: Zhang, Haodong – sequence: 5 givenname: Biao surname: Zhang fullname: Zhang, Biao – sequence: 6 givenname: Feiyu surname: Kang fullname: Kang, Feiyu – sequence: 7 givenname: Dengyun surname: Zhai fullname: Zhai, Dengyun |
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| SubjectTerms | diethylene glycol Dimethyl ether Electrolytes Pigments Potassium |
| Title | A highly concentrated electrolyte for high-efficiency potassium metal batteries |
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