阳极
电解质
电化学
水溶液
阴极
纳米孔
化学工程
储能
电池(电)
锂(药物)
材料科学
无机化学
纳米技术
化学
电极
物理
有机化学
工程类
内分泌学
物理化学
功率(物理)
医学
量子力学
作者
Chong Bai,Fengshi Cai,Ling-chang Wang,Sheng‐Qi Guo,Xizheng Liu,Zhihao Yuan
出处
期刊:Nano Research
[Springer Nature]
日期:2017-12-15
卷期号:11 (7): 3548-3554
被引量:157
标识
DOI:10.1007/s12274-017-1920-9
摘要
Rechargeable metal-iodine batteries are an emerging attractive electrochemical energy storage technology that combines metallic anodes with halogen cathodes. Such batteries using aqueous electrolytes represent a viable solution for the safety and cost issues associated with organic electrolytes. A hybrid-electrolyte battery architecture has been adopted in a lithium-iodine battery using a solid ceramic membrane that protects the metallic anode from contacting the aqueous electrolyte. Here we demonstrate an eco-friendly, low-cost zinc-iodine battery with an aqueous electrolyte, wherein active I2 is confined in a nanoporous carbon cloth substrate. The electrochemical reaction is confined in the nanopores as a single conversion reaction, thus avoiding the production of I3− intermediates. The cathode architecture fully utilizes the active I2, showing a capacity of 255 mAh·g−1 and low capacity cycling fading. The battery provides an energy density of ∼ 151 Wh·kg−1 and exhibits an ultrastable cycle life of more than 1,500 cycles.
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