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H+-Insertion Boosted α-MnO2 for an Aqueous Zn-Ion Battery

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成果类型:
期刊论文
作者:
Gao, Xu;Wu, Hanwen;Li, Wenjie;Tian, Ye;Zhang, Yun;...
通讯作者:
Ji, Xiaobo
作者机构:
[Wu, Hanwen; Hou, Hongshuai; Gao, Xu; Yang, Li; Ji, Xiaobo; Tian, Ye; Zou, Guoqiang] Cent S Univ, Coll Chem & Chem Engn, State Key Lab Powder Met, Changsha 410083, Peoples R China.
[Li, Wenjie] Hunan Agr Univ, Coll Resource & Environm, Environm Sci & Engn, Changsha 410128, Peoples R China.
[Wu, Hao; Zhang, Yun] Sichuan Univ, Coll Mat Sci & Engn, Dept Adv Energy Mat, Chengdu 610064, Peoples R China.
[Ji, Xiaobo] Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450001, Peoples R China.
通讯机构:
[Ji, Xiaobo] C
[Ji, Xiaobo] Z
Cent S Univ, Coll Chem & Chem Engn, State Key Lab Powder Met, Changsha 410083, Peoples R China.
Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450001, Peoples R China.
语种:
英文
关键词:
cathodes;electrochemistry;free-standing;zinc-ion batteries;alpha-MnO 2
期刊:
Small
ISSN:
1613-6810
年:
2020
卷:
16
期:
5
页码:
e1905842
基金类别:
This work was financially supported by National Natural Science Foundation of China (51622406 and 21673298), National Key Research and Development Program of China (2017YFB0102000 and 2018YFB0104200), Innovation Mover Program of Central South University (2017CX004 and 2018CX005), and Hunan Provincial Science and Technology Plan (2017TP1001 and 2016TP1009).
机构署名:
本校为其他机构
院系归属:
工学院
资源环境学院
摘要:
Rechargeable Zn/MnO2 batteries using mild aqueous electrolytes are attracting extensive attention due to their low cost, high safety, and environmental friendliness. However, the charge-storage mechanism involved remains a topic of controversy so far. Also, the practical energy density and cycling stability are still major issues for their applications. Herein, a free-standing α-MnO2 cathode for aqueous zinc-ion batteries (ZIBs) is directly constructed with ultralong nanowires, leading to a rather high energy density of 384 mWh g−1 for the en...

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