Hierarchical Ni/NiTiO3derived from NiTi LDHs: A bifunctional electrocatalyst for overall water splitting

doi:10.1039/c7ta08440d

	Hierarchical Ni/NiTiO3derived from NiTi LDHs: A bifunctional electrocatalyst for overall water splitting
	Dong, Chenlong 1; Liu, Xiangye 1; Wang, Xin 1; Yuan, Xiaotao 1; Xu, Ziwan 1; Dong, Wujie 1; Riaz, Muhammad Sohial 1; Li, Guobao 1; Huang, Fuqiang 1,2
刊名	Journal of Materials Chemistry A
	2017
卷号	5 期号:47 页码:24767-24774
ISSN号	20507488
DOI	10.1039/c7ta08440d
英文摘要	Developing economical and stable bifunctional electrocatalysts for overall water splitting is of enormous importance for sustainable energy systems. Here, Ni/NiTiO3with a villiform structure assembled by nanosheets is presented as an efficient bifunctional electrocatalyst. The Ni/NiTiO3with a molar ratio of 15:1 (Ni:Ti) manifests remarkable catalytic performance for both the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) in alkaline solutions, with onset overpotentials of 270 mV for the OER and ∼50 mV for the HER. Large amounts of Ni nanoparticles inset in the NiTiO3nanosheets possess a high specific surface of 28.4 m2g-1which is far greater than that of bare Ni (7.7 m2g-1). The results of long-term OER operation confirm that the introduction of Ti4+is favorable for enhanced stability. When the catalyst is employed as both the cathode and anode for overall water splitting, it displays an onset potential of 1.55 V in 1 M KOH solution which can rival that of the integrated performance of Pt/C and RuO2. Hence, our Ni/NiTiO3electrocatalysts have enormous potential for realistic large-scale water splitting. © The Royal Society of Chemistry.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25533]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing; 100871, China; 2.CAS Key Laboratory of Materials for Energy Conversion, State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China
推荐引用方式 GB/T 7714	Dong, Chenlong,Liu, Xiangye,Wang, Xin,et al. Hierarchical Ni/NiTiO3derived from NiTi LDHs: A bifunctional electrocatalyst for overall water splitting[J]. Journal of Materials Chemistry A,2017,5(47):24767-24774.
APA	Dong, Chenlong.,Liu, Xiangye.,Wang, Xin.,Yuan, Xiaotao.,Xu, Ziwan.,...&Huang, Fuqiang.(2017).Hierarchical Ni/NiTiO3derived from NiTi LDHs: A bifunctional electrocatalyst for overall water splitting.Journal of Materials Chemistry A,5(47),24767-24774.
MLA	Dong, Chenlong,et al."Hierarchical Ni/NiTiO3derived from NiTi LDHs: A bifunctional electrocatalyst for overall water splitting".Journal of Materials Chemistry A 5.47(2017):24767-24774.