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首页> 外文期刊>Advanced functional materials >Phosphorus Vacancies and Heterojunction Interface as Effective Lithium-Peroxide Promoter for Long-Cycle Life Lithium–Oxygen Batteries
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Phosphorus Vacancies and Heterojunction Interface as Effective Lithium-Peroxide Promoter for Long-Cycle Life Lithium–Oxygen Batteries

机译：Phosphorus Vacancies and Heterojunction Interface as Effective Lithium-Peroxide Promoter for Long-Cycle Life Lithium–Oxygen Batteries

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摘要

An electrocatalyst with excellent performance is widely perceived as corematerials to solve the practical application of lithium–oxygen batteries(LOBs). Vacancy/interfacial engineering can affect reaction intermediateadsorption and catalytic activity by manipulating the local electronic structure,which is key to improving the performance of LOBs. Here, MoO_2-supportedMo_3P@Mo nanocomposites with phosphorus vacancy and interfacialcontact are facile synthesized and used as the electrocatalyst to control themorphology of lithium peroxide (Li_2O_2) and to boost the electrochemical performanceof LOBs. The nanocomposites exhibit excellent electrochemical performancewith lower overpotential and super long cycling stability, can stablycycle for 500 cycles at 500 mA g~(?1) with a round-trip efficiency close to 100%,and can work for 1370 h with failure at the lower cut-off of 2 V. The influenceof the interface and phosphorus vacancy, and the catalytic mechanism areexplained by the result about first-principles calculations and experimentalstudies.

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