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A Long‐Cycling Aqueous Zinc‐Ion Pouch Cell: NASICON‐Type Material and Surface Modification
Author(s) -
Zhang Xianghua,
Chen Haoliang,
Liu Weiling,
Xiao Ni,
Zhang Qi,
Rui Xianhong,
Huang Shaoming
Publication year - 2020
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.202000162
Subject(s) - materials science , cathode , aqueous solution , electrochemistry , chemical engineering , electrolyte , intercalation (chemistry) , inorganic chemistry , electrode , chemistry , organic chemistry , engineering
Aqueous zinc‐ion batteries (ZIBs) have become the highest potential energy storage system for large‐scale applications owing to the high specific capacity, good safety and low cost. In this work, a NASICON‐type Na 3 V 2 (PO 4 ) 3 cathode modified by a uniform carbon layer (NVP/C) has been synthesized via a facile solid‐state method and exhibited significantly improved electrochemical performance when working in an aqueous ZIB. Specifically, the NVP/C cathode shows an excellent rate capacity (e. g., 48 mAh g −1 at 1.0 A g −1 ). Good cycle stability is also achieved (e. g., showing a capacity retention of 88% after 2000 cycles at 1.0 A g −1 ). Furthermore, the Zn 2+ (de)intercalation mechanism in the NVP cathode has been determined by various ex‐situ techniques. In addition, a Zn||NVP/C pouch cell has been assembled, delivering a high capacity of 89 mAhg −1 at 0.2 A g −1 and exhibiting a superior long cycling stability.