Nanocrystalline CoP thin film as a new anode material for lithium ion battery

被引：55
作者：
Cui, Yan-Hua [1 ]
Xue, Ming-Zhe [2 ]
Fu, Zheng-Wen [3 ]
Wang, Xiao-Ling [1 ]
Liu, Xiao-Jiang [1 ]
机构：
[1] China Acad Engn Phys, Inst Elect Engn, Mianyang 621900, Peoples R China
[2] Tongji Univ, Sch Automot Studies, Clean Energy Automot Engn Ctr, Shanghai 201804, Peoples R China
[3] Fudan Univ, Dept Chem, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 555卷
关键词：
CoP; Pulsed laser deposition; Thin film; Lithium ion battery; Anode; IMPROVED ELECTROCHEMICAL PERFORMANCE; NICKEL PHOSPHIDE FILM; NEGATIVE-ELECTRODE; REACTION-MECHANISM; METAL PHOSPHIDE; LI; REACTIVITY; STORAGE; NI2P; INTERCALATION;
D O I：
10.1016/j.jallcom.2012.12.037
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Nanocrystalline CoP thin film was prepared by pulsed laser deposition (PLD) and the electrochemical investigation of CoP as anode material for lithium ion battery was reported for the first time. The reversible discharge capacity of CoP/Li cell cycled between 0.1-3.0 V was found in the range of 788.0-1055.7 mAh g (1) during the first 25 cycles. A reversible couple of redox peaks at 0.63 and 1.02 V was observed in the first cycle of cyclic voltammetry (CV) curves. Ex situ transmission electron microscopy (TEM) and selected-area electron diffraction (SAED) revealed the fully decomposition of CoP to Co/Li3P composite after discharging the CoP/Li cell to 0.1 V and the re-formation of CoP nanocrystalline structure after recharging to 3.0 V, demonstrating a fully reversible conversion reaction mechanism between CoP and Co/Li3P composite. High utility of trivalent phosphorus benefits the reversibility and capacity of CoP and makes it potential anode material for future lithium ion battery. (C) 2012 Elsevier B.V. All rights reserved.
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收藏
页码：283 / 290
页数：8
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