SIC OpenIR
Self-catalyzed decomposition of discharge products on the oxygen vacancy sites of MoO3nanosheets for low-overpotential Li-O2batteries
Zhang, Sanpei1,2; Wang, Gan1,2; Jin, Jun1; Zhang, Linlin1; Wen, Zhaoyin1; Yang, Jianhua1
2017
发表期刊Nano Energy
ISSN22112855
卷号36页码:186-196
摘要The efficient reversible formation of discharge products for Li-O2batteries is still challenging. Meanwhile, the question of the nature of the discharge products and their decomposition mechanism are still remain. Implanting oxygen vacancies on the metal oxides can create negative-charge surface to provide strong adsorption of active oxygen and at the same time, the exposed metal sites can serve as an efficient substrate for decomposed reaction of discharge products. In this work, we apply the graphene-like MoO3ultrathin nanosheets as a matrix. By controlling the reduction time, the MoO3nanosheets with different concentration of oxygen vacancy are obtained. Experimental results reveal that the MoO3nanosheets with the high-concentration oxygen vacancies can significantly decrease the overpotential and get enhanced electrochemical response, namely, a low overpotential of ~0.5 V can be delivered with ultra-stable cycles (over 60 cycles). Moreover, the Li-O2batteries demonstrate an interesting four-step discharge and charge process. X-ray photoelectron spectroscopy, X-ray diffraction, transmission electron microscopy and electron energy-loss spectroscopy analyses are carried out for the four typical states of the cathode to reveal the reaction mechanism for the unique electrochemical behavior. © 2017 Elsevier Ltd
DOI10.1016/j.nanoen.2017.04.038
EI入藏号20171703598377
EI主题词Oxygen vacancies
EI分类号525.4 Energy Losses (industrial and residential) - 701.1 Electricity: Basic Concepts and Phenomena - 741.3 Optical Devices and Systems - 761 Nanotechnology - 802.2 Chemical Reactions - 804 Chemical Products Generally - 933 Solid State Physics - 933.1 Crystalline Solids
引用统计
文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25657
专题中国科学院上海硅酸盐研究所
作者单位1.CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China;
2.University of Chinese Academy of Sciences, Beijing; 100049, China
推荐引用方式
GB/T 7714
Zhang, Sanpei,Wang, Gan,Jin, Jun,et al. Self-catalyzed decomposition of discharge products on the oxygen vacancy sites of MoO3nanosheets for low-overpotential Li-O2batteries[J]. Nano Energy,2017,36:186-196.
APA Zhang, Sanpei,Wang, Gan,Jin, Jun,Zhang, Linlin,Wen, Zhaoyin,&Yang, Jianhua.(2017).Self-catalyzed decomposition of discharge products on the oxygen vacancy sites of MoO3nanosheets for low-overpotential Li-O2batteries.Nano Energy,36,186-196.
MLA Zhang, Sanpei,et al."Self-catalyzed decomposition of discharge products on the oxygen vacancy sites of MoO3nanosheets for low-overpotential Li-O2batteries".Nano Energy 36(2017):186-196.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Zhang, Sanpei]的文章
[Wang, Gan]的文章
[Jin, Jun]的文章
百度学术
百度学术中相似的文章
[Zhang, Sanpei]的文章
[Wang, Gan]的文章
[Jin, Jun]的文章
必应学术
必应学术中相似的文章
[Zhang, Sanpei]的文章
[Wang, Gan]的文章
[Jin, Jun]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。