Rational Design of Manganese Cobalt Phosphide with Yolk–Shell Structure for Overall Water Splitting. Issue 6 (6th May 2019)

• Record Type: Journal Article
• Authors: Tang, Guisheng; Zeng, Ye; Wei, Binbin; Liang, Hanfeng; Wu, Jian; Yao, Pengcheng; Wang, Zhoucheng
• Is Part Of: Energy technology. Volume 7:Issue 6(2019:Jun.)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-05-06
• Subjects: bifunctional catalysts -- electrochemistry -- Mn‐Co phosphide -- overall water splitting -- yolk–shell structures; Energy development -- Periodicals; Power resources -- Periodicals; 333.79
• DOI: 10.1002/ente.201900066
• Languages: English
• ISSNs: 2194-4288

Abstract

Abstract : The development of low‐cost, earth‐abundant, and efficient catalysts for overall water splitting, involving the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), attracts tremendous attention in recent years. Herein, this work reports the preparation of Mn‐Co phosphide (Mn‐Co‐P) bifunctional catalysts with a yolk–shell structure by a facile hydrothermal route. The as‐prepared catalysts exhibit an excellent catalytic activity with the low overpotentials of 66 mV at 10 mA cm −2 for HER and 355 mV at 50 mA cm −2 for OER in 1 m KOH, along with an outstanding stability. More importantly, the cell voltage of 1.74 V can achieve a current density of 10 mA cm −2 when assembled as an electrolyzer for overall water splitting. Such superior performance makes the Mn‐Co‐P a promising candidate to replace Pt‐based noble metal catalysts for electrocatalytic applications. Abstract : The Mn‐Co‐P spheres with a yolk–shell structure synthesized by a facile hydrothermal route exhibit excellent performance toward both the hydrogen evolution reaction and oxygen evolution reaction. The outstanding catalytic activity of the assembled electrolyzer for overall water splitting suggests an extensive application prospect of Mn‐Co‐P as non‐noble transition metal catalysts in the electrocatalytic fields.