用于激活块状硫化锂的局部多硫化物注入器
Localized Polysulfide Injector for the Activation of Bulk Lithium Sulfide.
作者信息
Li Matthew, Lu Jun, Shi Jiayan, Son Seoung-Bum, Luo Dan, Bloom Ira, Chen Zhongwei, Amine Khalil
机构信息
Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 Cass Avenue, Lemont, Illinois 60439, United States.
Department of Chemical Engineering, Waterloo Institute of Nanotechnology, University of Waterloo,200 University Avenue West, Waterloo, ON N2L 3G1, Canada.
出版信息
J Am Chem Soc. 2021 Feb 10;143(5):2185-2189. doi: 10.1021/jacs.0c11265. Epub 2021 Jan 28.
The activation of commercial LiS remains to be one of the key challenges against its commercialization as a starting cathode material for a sulfur-based Li-ion battery system. In this work we take advantage of the lower oxidation potential of commercial NaS (1-3 wt%) to serve as an and local polysulfide injector for the activation of commercial LiS (70 wt%). In contrast to applying pre-solvated redox mediators, this technique allows for the activation of commercial LiS at lower voltages with an electrolyte content as low as 3 μL mg at 3 mgmg cm and 4 μL mg at 6.5 mg cm without any other material modification.
作为硫基锂离子电池系统的起始阴极材料，商用硫化锂（LiS）的活化仍然是其商业化面临的关键挑战之一。在这项工作中，我们利用商用硫化钠（NaS，1-3 wt%）较低的氧化电位，作为一种[此处原文可能有误，推测是某种物质]和局部多硫化物注入剂来活化商用硫化锂（70 wt%）。与应用预溶剂化的氧化还原介质不同，该技术能够在较低电压下活化商用LiS，在3 mg/cm²时电解质含量低至3 μL/mg，在6.5 mg/cm²时为4 μL/mg，且无需任何其他材料改性。
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