多硫化物
阴极
电池(电)
氧化还原
化学
化学工程
动力学
储能
纳米结构
电极
纳米技术
材料科学
无机化学
热力学
物理化学
功率(物理)
物理
量子力学
工程类
电解质
作者
Miaomiao Tian,Jing Zhao,Hongmei Li,Yan Li,Zhengwei Wan,Zeheng Li,Wei Gu,Kun Wang,Tiangui Zhou,Yuanzhong Tan,Yang Hou,Wenbin Ni,Ming Lin,Chengdu Liang
标识
DOI:10.1016/j.seppur.2022.121684
摘要
Li-S battery is seen as the main technical route in high-energy density storage system because of high specific capacity. There are many challenges including volume expansion, shuttle effect and sluggish kinetics during the electrode reaction. Herein, we construct MoP nanoparticles which are embedded in N-doped carbon hollow nanostructure ([email protected]) as host with multiple synergistic mechanism to facilitate multiphase sulfur redox reaction kinetics, inhibit polysulfide shuttle and buffer the side effects of volume expansion in Li-S battery. In consequence, [email protected]/S cathode shows a surprisingly discharge capacity of 1587 mAh g−1 at 0.1 C, and a stable long cycle life over 1000 cycles at 1 C with low capacity loss of average 0.04% per cycle. The [email protected]/S cathode effectively solves the essential problem and further promotes the commercialization of Li-S battery.
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