Versatile nanoporous bimetallic phosphides towards electrochemical water splitting. Issue 7 (23rd May 2016)

• Record Type: Journal Article
• Authors: Tan, Yongwen; Wang, Hao; Liu, Pan; Shen, Yuhao; Cheng, Chun; Hirata, Akihiko; Fujita, Takeshi; Tang, Zheng; Chen, Mingwei
• Is Part Of: Energy & environmental science. Volume 9:Issue 7(2016)
• Page Start: 2257
• Page End: 2261
• Publication Date: 2016-05-23
• Subjects: Energy conversion -- Periodicals; Fuel switching -- Periodicals; Environmental sciences -- Periodicals; Environmental chemistry -- Periodicals; 333.79
• DOI: 10.1039/c6ee01109h
• Languages: English
• ISSNs: 1754-5692

Abstract

Abstract : Nanoporous bimetallic (Co1− x Fe x )2 P phosphides with tuneable Co/Fe ratios exhibit versatile catalytic activities for highly efficient electrochemical water splitting. Abstract : Alloying is an important approach to improving catalytic activities and realizing new functions of heterogeneous catalysts, which has extensively been employed in fabricating noble metal based bimetallic catalysts. However, it is technically unviable in the synthesis of alloyed transition metal compounds, which are emerging as important catalysts for water splitting, in a controllable manner using conventional wet chemical methods. Here we report nanoporous bimetallic (Co1− x Fe x )2 P phosphides with controllable compositions and tuneable porosity, which are fabricated by the combination of metallurgical alloy design and electrochemical etching. By tailoring the Co/Fe ratios and nanoporosity, the bimetallic phosphides exhibit versatile catalytic activities towards HER and OER in acidic and basic electrolytes. As both the cathode and the anode of an electrolyser, nanoporous (Co0.52 Fe0.48 )2 P shows an outstanding performance in water electrolysis, comparable to the commercial electrolyser with paired Pt/C and IrO2 catalysts.