Synergistic engineering of architecture and composition in NixCo1-xMoO4@CoMoO4 nanobrush arrays towards efficient overall water splitting electrocatalysis

doi:10.1039/c9nr08281f

	Synergistic engineering of architecture and composition in NixCo1-xMoO4@CoMoO4 nanobrush arrays towards efficient overall water splitting electrocatalysis
	Li, Zekun 2; Zheng, Mingyue 1; Zhao, Xian 1; Yang, Jun 3; Fan, Weiliu 2
刊名	NANOSCALE
	2019-12-21
卷号	11 期号:47 页码:22820-22831
ISSN号	2040-3364
DOI	10.1039/c9nr08281f
英文摘要	Implementing the hierarchical structures of non-noble-metal-based electrocatalysts and modulating their composition can help accelerate surface reactions and fulfill the promise of renewable energy devices via water splitting. Herein, molybdenum-based compounds are constructed on activated nickel foam (act-NF) by a one-step hydrothermal growth. The product generated on the act-NF is NixCo1-xMoO4@CoMoO4, with a novel 3D hierarchical heterostructure, wherein the one-dimensional CoMoO4 nanorods are hierarchically integrated with the two-dimensional NixCo1-xMoO4 nanosheets (NCMO@CMO/act-NF). The formation of NixCo1-xMoO4@CoMoO4 attributes to the release and diffusion of Ni2+ from act-NF. Heterogeneous NixCo1-xMoO4@CoMoO4 has compositional differences, and synergistic interaction between cobalt and nickel results in the modulated electronic states. Meanwhile, the hierarchical structure facilitates the exposure of active sites. Combining these two advantages, NCMO@CMO/act-NF presents a low eta(10) value of 61 and 180 mV in 1.0 M KOH for the HER and OER, respectively, and it shows a low cell voltage of 1.46 V for overall water splitting with robust stability. DFT calculations reveal that Ni doping leads to the charge depletion of Co, which further optimizes the d-band center of metal sites and tunes the adsorption of adsorbates to facilitate the water splitting reaction. Thus, a promising strategy of incorporating the nanostructure design with compositional modulation is presented to develop functional materials for energy conversion.
资助项目	Natural Science Foundation of China[21771119] ; Taishan Scholar Project of Shandong Province
WOS关键词	BIFUNCTIONAL ELECTROCATALYSTS ; NANOSHEET ARRAYS ; HIGHLY EFFICIENT ; NICKEL FOAM ; HYDROGEN ; ELECTRODE ; NANORODS ; NANOWIRES ; ALKALINE ; SYSTEMS
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000506887500013
资助机构	Natural Science Foundation of China ; Taishan Scholar Project of Shandong Province
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/38883]
专题	中国科学院过程工程研究所
通讯作者	Fan, Weiliu
作者单位	1.Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China 2.Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Li, Zekun,Zheng, Mingyue,Zhao, Xian,et al. Synergistic engineering of architecture and composition in NixCo1-xMoO4@CoMoO4 nanobrush arrays towards efficient overall water splitting electrocatalysis[J]. NANOSCALE,2019,11(47):22820-22831.
APA	Li, Zekun,Zheng, Mingyue,Zhao, Xian,Yang, Jun,&Fan, Weiliu.(2019).Synergistic engineering of architecture and composition in NixCo1-xMoO4@CoMoO4 nanobrush arrays towards efficient overall water splitting electrocatalysis.NANOSCALE,11(47),22820-22831.
MLA	Li, Zekun,et al."Synergistic engineering of architecture and composition in NixCo1-xMoO4@CoMoO4 nanobrush arrays towards efficient overall water splitting electrocatalysis".NANOSCALE 11.47(2019):22820-22831.