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Manipulating Molecular Structure and Morphology to Invoke High‐Performance Sodium Storage of Copper Phosphide
Author(s) -
Hu Zhe,
Liu Qiannan,
Lai Weihong,
Gu Qinfen,
Li Lin,
Chen Mingzhe,
Wang Wanlin,
Chou ShuLei,
Liu Yong,
Dou ShiXue
Publication year - 2020
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201903542
Subject(s) - phosphide , materials science , copper , pseudocapacitance , anode , electrochemistry , conductivity , sodium , nanotechnology , electrical conductor , electrode , chemical engineering , inorganic chemistry , metallurgy , composite material , metal , supercapacitor , chemistry , engineering
Copper is used as current collector in rechargeable ion batteries due to its outstanding electronic conductivity and low cost. The intrinsic inactivity of copper, however, makes it a poor candidate for an electrode material without further structural modification. To fully utilize its high electronic conductivity, herein, the incorporation of heterogeneous phosphorus combined with building a unique 3D hollow structure is proposed. The as‐prepared copper phosphide hollow nanocubes deliver a stable capacity of 325 mAh·g −1 at 50 mA·g −1 and fast charging and discharging via pseudocapacitance behavior. The outstanding electrochemical performance is attributed to the synergetic effects of high electronic conductivity of copper and the high sodium storage capability of phosphorus. In addition, this facile synthesis method is also easily scaled up for practical applications. Thus, copper phosphide is a promising anode material for sodium ion batteries.