Catalytic Conversion of Ni 12 P 5 in Situ on the Surface of Carbon Nanotubes to Promote Polysulfide Conversion in High-Performance Lithium-Sulfur Batteries
Shenghong Mao, Wenxiao Su, Chunyuan Liu, Fu Zhao, Hongxia Zhao, Xiaoping Zheng
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引用次数: 0
Abstract
Abstract Lithium-sulfur batteries have received lots of attention due to their high energy density and cheap material. The poor electrical conductivity and slow electrochemical kinetics of sulfur hinder their application. Here, we in situ grow Ni12P5 on carbon nanotube to prepare composites as sulfur host. Electrochemical tests show that Ni12P5 acts as an electrocatalyst in the lithium-sulfur batteries, initiating the oxidation of Li2S6 and Li2S4 at higher potentials, significantly improving the reaction kinetics during charging and discharging. The CNT@Ni12P5/S composite exhibited 1352 mAh/g initial discharge capacity at 0.1 C and a retention capacity of 85% after 100 cycles at 0.2 C.
期刊介绍：
Integrated Ferroelectrics provides an international, interdisciplinary forum for electronic engineers and physicists as well as process and systems engineers, ceramicists, and chemists who are involved in research, design, development, manufacturing and utilization of integrated ferroelectric devices. Such devices unite ferroelectric films and semiconductor integrated circuit chips. The result is a new family of electronic devices, which combine the unique nonvolatile memory, pyroelectric, piezoelectric, photorefractive, radiation-hard, acoustic and/or dielectric properties of ferroelectric materials with the dynamic memory, logic and/or amplification properties and miniaturization and low-cost advantages of semiconductor i.c. technology.
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