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High-Safety and High-Energy-Density Lithium Metal Batteries in a Novel Ionic-Liquid Electrolyte.
Sun, Hao; Zhu, Guanzhou; Zhu, Yuanmin; Lin, Meng-Chang; Chen, Hui; Li, Yuan-Yao; Hung, Wei Hsuan; Zhou, Bo; Wang, Xi; Bai, Yunxiang; Gu, Meng; Huang, Cheng-Liang; Tai, Hung-Chun; Xu, Xintong; Angell, Michael; Shyue, Jing-Jong; Dai, Hongjie.
Afiliação
  • Sun H; Department of Chemistry, Stanford University, Stanford, CA, 94305, USA.
  • Zhu G; Department of Chemistry, Stanford University, Stanford, CA, 94305, USA.
  • Zhu Y; Department of Materials Science and Engineering Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China.
  • Lin MC; College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao, 266590, China.
  • Chen H; College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao, 266590, China.
  • Li YY; Department of Chemistry, Stanford University, Stanford, CA, 94305, USA.
  • Hung WH; Department of Chemical Engineering, National Chung Cheng University, Chiayi, 62102, Taiwan.
  • Zhou B; Department of Chemistry, Stanford University, Stanford, CA, 94305, USA.
  • Wang X; Institute of Materials Science and Engineering, National Central University, Taoyuan, 32001, Taiwan.
  • Bai Y; Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, 515031, China.
  • Gu M; Key Laboratory of Luminescence and Optical Information Ministry of Education, Department of Physics, School of Science, Beijing Jiaotong University, Beijing, 100044, China.
  • Huang CL; Department of Chemistry, Stanford University, Stanford, CA, 94305, USA.
  • Tai HC; Department of Materials Science and Engineering Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China.
  • Xu X; Department of Chemical Engineering, National Chung Cheng University, Chiayi, 62102, Taiwan.
  • Angell M; Department of Chemical Engineering, National Chung Cheng University, Chiayi, 62102, Taiwan.
  • Shyue JJ; Department of Chemistry, Stanford University, Stanford, CA, 94305, USA.
  • Dai H; Department of Chemistry, Stanford University, Stanford, CA, 94305, USA.
Adv Mater ; 32(26): e2001741, 2020 Jul.
Article em En | MEDLINE | ID: mdl-32449260
ABSTRACT
Rechargeable lithium metal batteries are next generation energy storage devices with high energy density, but face challenges in achieving high energy density, high safety, and long cycle life. Here, lithium metal batteries in a novel nonflammable ionic-liquid (IL) electrolyte composed of 1-ethyl-3-methylimidazolium (EMIm) cations and high-concentration bis(fluorosulfonyl)imide (FSI) anions, with sodium bis(trifluoromethanesulfonyl)imide (NaTFSI) as a key additive are reported. The Na ion participates in the formation of hybrid passivation interphases and contributes to dendrite-free Li deposition and reversible cathode electrochemistry. The electrolyte of low viscosity allows practically useful cathode mass loading up to ≈16 mg cm-2 . Li anodes paired with lithium cobalt oxide (LiCoO2 ) and lithium nickel cobalt manganese oxide (LiNi0.8 Co0.1 Mn0.1 O2 , NCM 811) cathodes exhibit 99.6-99.9% Coulombic efficiencies, high discharge voltages up to 4.4 V, high specific capacity and energy density up to ≈199 mAh g-1 and ≈765 Wh kg-1 respectively, with impressive cycling performances over up to 1200 cycles. Highly stable passivation interphases formed on both electrodes in the novel IL electrolyte are the key to highly reversible lithium metal batteries, especially for Li-NMC 811 full batteries.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Adv Mater Assunto da revista: BIOFISICA / QUIMICA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Estados Unidos
Texto completo
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XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Adv Mater Assunto da revista: BIOFISICA / QUIMICA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Estados Unidos