A current collector covering nanostructured villous oxygen-deficient NiO fabricated by rapid laser-scan for Li-O2batteries

doi:10.1016/j.nanoen.2018.06.043

	A current collector covering nanostructured villous oxygen-deficient NiO fabricated by rapid laser-scan for Li-O2batteries
	Mu, Xiaowei 1; Wen, Qiuhao 2; Ou, Gang 3; Du, Yuemin 1; He, Ping 1; Zhong, Minlin 3; Zhu, Hong 2; Wu, Hui 3; Yang, Sixie 1; Liu, Yijie 1
刊名	Nano Energy
	2018
卷号	51 页码:83-90
ISSN号	22112855
DOI	10.1016/j.nanoen.2018.06.043
英文摘要	Non-aqueous Li-O2batteries attract extensive attention because of their ultra-high theoretical specific energy density. However, the high charge potential, which induces severe parasitic reactions such as the corrosion of carbon-based catalysts and metal current collectors, is one of the biggest challenges currently. Herein, a current collector of Ni foam covering nanostructured villous NiO with oxygen vacancies (NiO1-δ) was fabricated by a fast laser-scan technique. The modified NiO1-δbased current collector presented superior stability and comparable electrocatalytic activity. It delivered a discharge capacity of about 500 mAh g−1and a low charge potential of 3.84 V in a Li-O2cell in the absence of catalysts. And this cell could maintain 73.5% of the initial capacity after 100 full discharge-charge cycles. Density functional theory (DFT) calculations verified that the improved electrocatalytic activity mainly derived from the introduction of oxygen vacancies in NiO1-δ. It improved the electronic conductivity for rapid electron transfer as well as served as active sites to bind O2and oxygen-containing intermediates (eg. LiO2) for electrochemistry reactions. This work gives a rapid and easily mass-produced method to fabricate a stable and activated current collector for Li-O2batteries. © 2018
出版者	Elsevier Ltd
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25198]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Center of Energy Storage Materials & Technology, College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing; 210093, China; 2.University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai; 200240, China; 3.State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing; 100084, China; 4.Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Umezono 1-1-1, Tsukuba; 3058568, Japan
推荐引用方式 GB/T 7714	Mu, Xiaowei,Wen, Qiuhao,Ou, Gang,et al. A current collector covering nanostructured villous oxygen-deficient NiO fabricated by rapid laser-scan for Li-O2batteries[J]. Nano Energy,2018,51:83-90.
APA	Mu, Xiaowei.,Wen, Qiuhao.,Ou, Gang.,Du, Yuemin.,He, Ping.,...&Zhou, Haoshen.(2018).A current collector covering nanostructured villous oxygen-deficient NiO fabricated by rapid laser-scan for Li-O2batteries.Nano Energy,51,83-90.
MLA	Mu, Xiaowei,et al."A current collector covering nanostructured villous oxygen-deficient NiO fabricated by rapid laser-scan for Li-O2batteries".Nano Energy 51(2018):83-90.