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High‐Performance Aqueous Zinc–Ion Battery Based on Layered H 2 V 3 O 8 Nanowire Cathode
Author(s) -
He Pan,
Quan Yueli,
Xu Xu,
Yan Mengyu,
Yang Wei,
An Qinyou,
He Liang,
Mai Liqiang
Publication year - 2017
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201702551
Subject(s) - cathode , electrochemistry , materials science , anode , aqueous solution , intercalation (chemistry) , zinc , electrolyte , battery (electricity) , polarization (electrochemistry) , electrode , ion , manganese , chemical engineering , inorganic chemistry , nanowire , energy storage , nanotechnology , metallurgy , chemistry , power (physics) , physics , organic chemistry , quantum mechanics , engineering
Rechargeable aqueous zinc–ion batteries have offered an alternative for large‐scale energy storage owing to their low cost and material abundance. However, developing suitable cathode materials with excellent performance remains great challenges, resulting from the high polarization of zinc ion. In this work, an aqueous zinc–ion battery is designed and constructed based on H 2 V 3 O 8 nanowire cathode, Zn(CF 3 SO 3 ) 2 aqueous electrolyte, and zinc anode, which exhibits the capacity of 423.8 mA h g −1 at 0.1 A g −1 , and excellent cycling stability with a capacity retention of 94.3% over 1000 cycles. The remarkable electrochemical performance is attributed to the layered structure of H 2 V 3 O 8 with large interlayer spacing, which enables the intercalation/de‐intercalation of zinc ions with a slight change of the structure. The results demonstrate that exploration of the materials with large interlayer spacing is an effective strategy for improving electrochemical stability of electrodes for aqueous Zn ion batteries.