《Molecular design for electrolyte solvents enabling energy-dense and long-cycling lithium metal batteries》 was written by Yu, Zhiao; Wang, Hansen; Kong, Xian; Huang, William; Tsao, Yuchi; Mackanic, David G.; Wang, Kecheng; Wang, Xinchang; Huang, Wenxiao; Choudhury, Snehashis; Zheng, Yu; Amanchukwu, Chibueze V.; Hung, Samantha T.; Ma, Yuting; Lomeli, Eder G.; Qin, Jian; Cui, Yi; Bao, Zhenan. Safety of Vinylene carbonate And the article was included in Nature Energy in 2020. The article conveys some information:
Electrolyte engineering is critical for developing Li metal batteries. While recent works improved Li metal cyclability, a methodol. for rational electrolyte design remains lacking. Herein, we propose a design strategy for electrolytes that enable anode-free Li metal batteries with single-solvent single-salt formations at standard concentrations Rational incorporation of -CF2- units yields fluorinated 1,4-dimethoxylbutane as the electrolyte solvent. Paired with 1 M lithium bis(fluorosulfonyl)imide, this electrolyte possesses unique Li-F binding and high anion/solvent ratio in the solvation sheath, leading to excellent compatibility with both Li metal anodes (Coulombic efficiency ∼ 99.52% and fast activation within five cycles) and high-voltage cathodes (∼6 V stability). Fifty-μm-thick Li|NMC batteries retain 90% capacity after 420 cycles with an average Coulombic efficiency of 99.98%. Industrial anode-free pouch cells achieve ∼325 Wh kg-1 single-cell energy d. and 80% capacity retention after 100 cycles. Our design concept for electrolytes provides a promising path to high-energy, long-cycling Li metal batteries.Vinylene carbonate(cas: 872-36-6Safety of Vinylene carbonate) was used in this study.
Vinylene carbonate(cas: 872-36-6) belongs to esters. Alkyl carbonates find applications as solvents for lithium ion battery electrolytes and the use of high quality battery grade electrolytes having extremely low water (<10 ppm) and acid (<10 ppm) contents are critical for achieving high electrochemical performance.Safety of Vinylene carbonate
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics