多硫化物
电解质
锂(药物)
锂硫电池
化学
材料科学
硫黄
无机化学
冶金
电极
内科学
医学
物理化学
作者
Li‐Ling Su,Nan Yao,Zheng Li,Chen‐Xi Bi,Zi‐Xian Chen,Xiang Chen,Bo‐Quan Li,Xue‐Qiang Zhang,Jia‐Qi Huang
标识
DOI:10.1002/anie.202318785
摘要
The cycle life of high-energy-density lithium-sulfur (Li-S) batteries is severely plagued by the incessant parasitic reactions between Li metal anodes and reactive Li polysulfides (LiPSs). Encapsulating Li-polysulfide electrolyte (EPSE) emerges as an effective electrolyte design to mitigate the parasitic reactions kinetically. Nevertheless, the rate performance of Li-S batteries with EPSE is synchronously suppressed. Herein, the sacrifice in rate performance by EPSE is circumvented while mitigating parasitic reactions by employing hexyl methyl ether (HME) as a co-solvent. The specific capacity of Li-S batteries with HME-based EPSE is nearly not decreased at 0.1 C compared with conventional ether electrolytes. With an ultrathin Li metal anode (50 μm) and a high-areal-loading sulfur cathode (4.4 mg
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