干旱区生态环境知识资源中心(Arid): Preparation of alpha-MnO2 Nanorods/Porous Carbon Cathode for Aqueous Zinc-ion Batteries

Arid

DOI	10.6023/A20090428
	Preparation of alpha-MnO2 Nanorods/Porous Carbon Cathode for Aqueous Zinc-ion Batteries
	Li, Yanli; Yu, Dandan; Lin, Sen; Sun, Dongfei; Lei, Ziqiang
通讯作者	Sun, DF (corresponding author), Northwest Normal Univ, Coll Chem & Chem Engn, Minist Educ, Key Lab Ecofunct Polymer Mat, Lanzhou 730070, Peoples R China.
来源期刊	ACTA CHIMICA SINICA
ISSN	0567-7351
出版年	2021
卷号	79 期号:2 页码:200-207
英文摘要	Aqueous zinc-ion batteries (ZIBs) have attracted more attention as large-scale energy storage technology due to their high safety, low cost and environmental benignity. To date, numerous cathodes based on manganese dioxide, vanadium dioxide, and polyanionic compounds have been reported. Among them, Manganese oxides have the advantages of low cost, non-toxicity, abundant materials and high working voltage, have been widely explored as promising cathodes for zinc ion batteries. Among them, MnO2 cathodes are particularly desirable candidates for commercialization owing to their tunnel structure and affordability. alpha-MnO2 has (1 x 1) and (2 x 2) tunnel structures, and Zn2+ can rapidly inserted and deserted in the tunnel. However, the capacity of manganese dioxide is fast decaying with the cycles due to the poor conductivity of MnO2, which limits its electrochemical performance. Herein, alpha-MnO2 nanorods are uniformly distributed on the surface of porous carbon nanosheets network (PCSs) by a simple hydrothermal/dispersion method strategy. In the alpha-MnO2/PCSs architecture, the alpha-MnO2 nanorods and alpha-MnO2/PCSs composite were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), etc. The results testified that alpha-MnO2/PCSs nanorods were firmly adhered on the surface of porous carbon nanosheets, which can effectively avoid the stacking of alpha-MnO2 nanorods, while the high conductive carbon network can improve the electrical conductivity of the composite. The porous network can provide effective electron transfer channels, provide stable hosts for fast Zn2+ extraction/insertion, and prevent the alpha-MnO(2 )nanorods from stacking each other. Benefiting from the unique porous structure and high conductive network, the alpha-MnO2/PCSs hybrid shows high reversibility capacity, good rate performance, and outstanding cycling stability. Specifically, alpha-MnO2/PCSs exhibits high reversible capacity of 350 mAh.g(-1) after 100 cycles at 0.1 A.g(-1) and maintains a capacity of 160 mAh.g(-1) at a high rate of 1 A.g(-1) after 1000 cycles, thus making it promising cathode for the high performance ZIBs.
英文关键词	aqueous zinc ion battery cathode material alpha-MnO(2 )nanorods porous carbon nanosheets electrochemical performance
类型	Article
语种	中文
收录类别	SCI-E
WOS记录号	WOS:000625364500009
WOS关键词	HIGH-CAPACITY ; PERFORMANCE ; STORAGE ; MNO2 ; COMPOSITE ; MECHANISM
WOS类目	Chemistry, Multidisciplinary
WOS研究方向	Chemistry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367859
作者单位	[Li, Yanli; Yu, Dandan; Lin, Sen; Sun, Dongfei; Lei, Ziqiang] Northwest Normal Univ, Coll Chem & Chem Engn, Minist Educ, Key Lab Ecofunct Polymer Mat, Lanzhou 730070, Peoples R China
推荐引用方式 GB/T 7714	Li, Yanli,Yu, Dandan,Lin, Sen,et al. Preparation of alpha-MnO2 Nanorods/Porous Carbon Cathode for Aqueous Zinc-ion Batteries[J],2021,79(2):200-207.
APA	Li, Yanli,Yu, Dandan,Lin, Sen,Sun, Dongfei,&Lei, Ziqiang.(2021).Preparation of alpha-MnO2 Nanorods/Porous Carbon Cathode for Aqueous Zinc-ion Batteries.ACTA CHIMICA SINICA,79(2),200-207.
MLA	Li, Yanli,et al."Preparation of alpha-MnO2 Nanorods/Porous Carbon Cathode for Aqueous Zinc-ion Batteries".ACTA CHIMICA SINICA 79.2(2021):200-207.