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Hierarchical Ni/NiTiO3derived from NiTi LDHs: A bifunctional electrocatalyst for overall water splitting
Dong, Chenlong1; Liu, Xiangye1; Wang, Xin1; Yuan, Xiaotao1; Xu, Ziwan1; Dong, Wujie1; Riaz, Muhammad Sohial1; Li, Guobao1; Huang, Fuqiang1,2
2017
发表期刊Journal of Materials Chemistry A
ISSN20507488
卷号5期号:47页码:24767-24774
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.
DOI10.1039/c7ta08440d
EI入藏号20175004538999
EI主题词Electrocatalysts
EI分类号548.1 Nickel - 761 Nanotechnology - 803 Chemical Agents and Basic Industrial Chemicals - 804.2 Inorganic Compounds - 933 Solid State Physics
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文献类型期刊论文
条目标识符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
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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.
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