A Peapod‐like CoP@C Nanostructure from Phosphorization in a Low‐Temperature Molten Salt for High‐Performance Lithium‐Ion Batteries,Angewandte Chemie International Edition

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A Peapod‐like CoP@C Nanostructure from Phosphorization in a Low‐Temperature Molten Salt for High‐Performance Lithium‐Ion Batteries
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-07-13 , DOI: 10.1002/anie.201805468
Zhiliang Liu ₁ , Sungjin Yang ₁ , Bingxue Sun ₁ , Xinghua Chang _{1,

2} , Jie Zheng ₁ , Xingguo Li ₁

Affiliation

A mild phosphorization process in low‐temperature molten salt (NaCl‐KCl‐AlCl₃) has been developed to synthesize peapod‐like CoP@C nanostructures by using low‐toxicity industrial PCl₃ as the phosphorus source and Mg as the reductant at 250 °C. Importantly, high efficiency of the phosphorous source is achieved since only stoichiometric PCl₃ is required to complete the reaction. The molten NaCl‐KCl‐AlCl₃ not only provides a liquid environment but also participates in the electron transport by the reversible conversion of the Al³⁺/Al redox couple. The obtained 0D‐in‐1D peapod CoP@C structure exhibits excellent lithium storage performance, delivering a superiorly stable capacity of 500 mAh g⁻¹ after 800 cycles at a high current of 1.0 A g⁻¹.

中文翻译：

低温熔融盐中磷化过程产生的类似Peapod的CoP @ C纳米结构，用于高性能锂离子电池

通过在250° C下使用低毒性工业PCl ₃作为磷源和Mg作为还原剂，已开发出一种在低温熔融盐（NaCl-KCl-AlCl ₃）中的温和磷化工艺，以合成豌豆状CoP @ C纳米结构。C。重要的是，由于仅需要化学计量的PCl ₃即可完成反应，因此可实现磷源的高效率。熔融的NaCl-KCl-AlCl ₃不仅提供了液态环境，而且还通过Al ³⁺ / Al氧化还原对的可逆转化参与了电子传输。所获得的0D-in-1D豌豆CoP @ C结构具有出色的锂存储性能，可提供500 mAh g ^-1的出色稳定容量在1.0 A g ^-1的高电流下800次循环后。

更新日期：2018-07-13

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