Hierarchical Ni/NiTiO3 derived from NiTi LDHs: a bifunctional electrocatalyst for overall water splitting

doi:10.1039/c7ta08440d

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	Hierarchical Ni/NiTiO3 derived 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
	2017-12-21
卷号	5 期号:47 页码:24767-24774
ISSN号	2050-7488
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/NiTiO3 with a villiform structure assembled by nanosheets is presented as an efficient bifunctional electrocatalyst. The Ni/NiTiO3 with 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 similar to 50 mV for the HER. Large amounts of Ni nanoparticles inset in the NiTiO3 nanosheets possess a high specific surface of 28.4 m(2) g(-1) which is far greater than that of bare Ni (7.7 m(2) g(-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/NiTiO3 electrocatalysts have enormous potential for realistic large-scale water splitting.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000417063200026
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/45297]
专题	中国科学院化学研究所
通讯作者	Li, Guobao; Huang, Fuqiang
作者单位	1.Peking Univ, Coll Chem & Mol Engn, Sci State Key Lab Rare Earth Mat Chem & Applicat, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Ceram, CAS Key Lab Mat Energy Convers, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
推荐引用方式 GB/T 7714	Dong, Chenlong,Liu, Xiangye,Wang, Xin,et al. Hierarchical Ni/NiTiO3 derived 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/NiTiO3 derived 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/NiTiO3 derived from NiTi LDHs: a bifunctional electrocatalyst for overall water splitting".JOURNAL OF MATERIALS CHEMISTRY A 5.47(2017):24767-24774.