Boosting Zinc-Ion Storage Capability by Effectively Suppressing Vanadium Dissolution Based on Robust Layered Barium Vanadate

被引：306
作者：
Wang, Xiao [1 ,2 ,3 ]
Xi, Baojuan [1 ,2 ]
Ma, Xiaojian [1 ,2 ]
Feng, Zhenyu [1 ,2 ]
Jia, Yuxi [3 ]
Feng, Jinkui [3 ]
Qian, Yitai [1 ,2 ,4 ]
Xiong, Shenglin [1 ,2 ]
机构：
[1] Shandong Univ, Sch Chem & Chem Engn, Key Lab Colloid & Interface Chem, Minist Educ, Jinan 250100, Peoples R China
[2] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China
[3] Shandong Univ, Sch Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China
[4] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China
来源：
NANO LETTERS | 2020年 / 20卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Vanadium-based compounds; robust architecture; aqueous rechargeable zinc-ion batteries; cathode dissolution; long-term cyclability; CATHODE; TRANSFORMATION; TRANSITION; BATTERIES;
D O I：
10.1021/acs.nanolett.0c00732
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Vanadium-based compounds with an open framework structure have become the subject of much recent investigation into aqueous zinc-ion batteries (AZIBs) due to high specific capacity. However, there are some issues with vanadium dissolution from a cathode framework as well as the generation of byproducts during discharge that should not be ignored, which could cause severe capacity deterioration and inadequate cycle life. Herein, we report several barium vanadate nanobelt cathodes constructed of two sorts of architectures, i.e., Ba1.2V6O16 center dot 3H(2)O and BaV6O16 center dot 3H(2)O (V3O8 -type) and Ba(x)V(2)O5 center dot nH(2)O (V2O3-type), which are controllably synthesized by tuning the amount of barium precursor. Benefiting from the robust architecture, layered BaxV3O8-type nanobelts (Ba(12)V(6)O16 center dot 3H(2)O) exhibit superior rate capability and long-term cyclability owing to fast zinc-ion kinetics, enabled by efficiently suppressing cathode dissolution as well as greatly eliminating the generation of byproduct Zn4SO4(OH)(6)center dot xH(2)O, which provides a reasonable strategy to engineer cathode materials with robust architectures to improve the electrochemical performance of AZIBs.
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收藏
页码：2899 / 2906
页数：8
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