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Superior Electrochemical Performance of WNb 2 O 8 Nanorods Triggered by Ultra‐Efficient Li + Diffusion
Author(s) -
Zhou Zhuren,
Lou Shuaifeng,
Cheng Xinqun,
Cui Binghan,
Si Wei,
Ding Fei,
Ma Yulin,
Zuo Pengjian,
Du Chunyu,
Wang Jiajun,
Yin Geping
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201904220
Subject(s) - nanorod , faraday efficiency , anode , pseudocapacitance , materials science , lithium (medication) , calcination , ion , diffusion , electrochemistry , chemical engineering , intercalation (chemistry) , nanotechnology , inorganic chemistry , chemistry , electrode , supercapacitor , thermodynamics , medicine , biochemistry , physics , organic chemistry , engineering , endocrinology , catalysis
Advanced anode materials with high rate performance and high safety are greatly desired for power lithium ion batteries. Herein, one‐dimensional WNb 2 O 8 is synthesized via a simple solution method with succeeding thermal calcining, and is first employed as an anode material for power lithium ion batteries. WNb 2 O 8 nanorods with diameters of 100–200 nm reveal a reversible capacity of 229.2 mAh g −1 with high initial coulombic efficiency of 92 % at 0.2 C. WNb 2 O 8 nanorods also possess high rate performance (150.7 mAh g −1 at 10 C) and cycling stability (keeping 85.2 % of the initial capacity after 500 cycles at 5 C). Moreover, the calculation results prove that the intercalation pseudocapacitance, which is promoted by ultrahigh lithium ion diffusion efficiency, plays a significant role in the fast charge/discharge processes.
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