Construction of Fe-doped CoP with hybrid nanostructures as a bifunctional catalyst for overall water splitting. Issue 48 (30th November 2021)

• Record Type: Journal Article
• Authors: Yang, Qinghua; Dai, Haojiang; Liao, Wenhao; Tong, Xianfeng; Fu, Yingyan; Qian, Min; Chen, Tianyun
• Is Part Of: Dalton transactions. Volume 50:Issue 48(2021)
• Page Start: 18069
• Page End: 18076
• Publication Date: 2021-11-30
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d1dt03292e
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Owing to the ionic doping and the partial phosphating strategies, Fe0.25 -CoP catalyst exhibited remarkable catalytic activity and durability for electrochemical water splitting. Abstract : Due to their open skeleton structures, adjustable active sites and homogeneous catalytic centers, PBA-based materials have promising applications in electrochemical water splitting. Herein, we report a PBA derived Fe0.25 -CoP electrocatalyst with a hybrid nanostructure, which offered a large specific surface area and active sites for the HER and OER, respectively. The as-synthesized Fe0.25 -CoP catalyst exhibits remarkable catalytic performance and durability at overpotentials of 262 mV for the OER and 111 mV for the HER, requiring a voltage of merely 1.57 V to achieve a current density of 10 mA cm −2 for the electrocatalytic water splitting process. The preeminent activity of Fe0.25 -CoP was mainly ascribed to the framework structures of Co-PBA and appropriate doping of Fe 3+ which regulated the electronic structures and morphology of Fe0.25 -CoP. In addition, the partial phosphating strategy retained the active centers for the OER in Co-PBA, which were further enhanced by the catalysis of Fe 3+ . In short, the rational design and regulation of catalyst structures and compositions is a promising approach for the development of highly efficient water splitting catalysts.