MnO2@Co3O4 heterostructure composite as high-performance cathode material for rechargeable aqueous zinc-ion battery

被引：6
作者：
Sun, Jianhang [1 ]
Zhang, Pengchao [1 ]
Ba, Ying [1 ]
Sun, Juncai [1 ]
机构：
[1] Dalian Maritime Univ, Dept Mat Sci & Engn, Dalian 116026, Peoples R China
来源：
IONICS | 2023年 / 29卷 / 05期
关键词：
Zinc-ion battery; Nanocomposite cathode; beta-MnO2; nanorods; Heterostructure; High performance; ANODE MATERIALS; HIGH-CAPACITY; TIO2; ANATASE; STORAGE; CHALLENGES; INSERTION; LI+;
D O I：
10.1007/s11581-023-04955-7
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In aqueous zinc ion battery, manganese dioxide (MnO2) has received extensive study as a high-performance cathode material. But the low ionic conductivity and weak diffusion ability prevent its widespread use. In this study, MnO2@Co3O4 composite electrode material is prepared by PVP-assisted hydrothermal method and calcination method. Co3O4 nanocrystals (about 5 nm) are fixed on MnO2 nanorods to form a unique heterostructure, showing an excellent electrochemical performance. The MnO2@Co3O4 composite has a high specific capacity of 350.3 mAh g(-1) at 100 mA g(-1) and retains 86.2% of its initial capacity after 1200 charge/discharge cycles at 2000 mA g(-1). This study offers fresh perspectives on how to build cathode materials with good cycle stability.
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收藏
页码：1913 / 1921
页数：9
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