Toward High-Safety Potassium-Sulfur Batteries Using a Potassium Polysulfide Catholyte and Metal-Free Anode
Toward High-Safety Potassium-Sulfur Batteries Using a Potassium Polysulfide Catholyte and Metal-Free Anode
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DOI：
10.1021/acsenergylett.8b00037
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发表时间：
2018-03-01
影响因子：
22
通讯作者：
Sun, Yang-Kook
中科院分区：
文献类型：
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作者：
Hwang, Jang-Yeon;Kim, Hee Min;Sun, Yang-Kook
基于可逆转换反应，K2Sx（S（充电）K2S5，放电充电），所提出的 K-S 电池在 0.1 C 倍率下提供了类似于 400 mAh g(-1) 的高放电容量，具有稳定的循环保留率（20 个循环后为 94%）和高达 2 C 倍率的良好倍率能力。此外，代替爆炸性和高反应性的钾金属电极，全电池由 电化学钾浸渍硬碳和 K2Sx (5
Based on the reversible conversion reactions, K2Sx (S (charge) K2S5, discharge charge the proposed K-S battery delivered a high discharge capacity of similar to 400 mAh g(-1) at 0.1 C -rate with stable cycle retention (94% after 20 cycles) and good rate capability up to 2 C -rate. In addition, instead of an explosive and highly reactive potassium metal electrode, a full cell consisting of an electrochemically potassium -impregnated hard carbon and the K2Sx (5