Biomass-derived self-supported porous carbon membrane embedded with Co nanoparticles as an advanced electrocatalyst for efficient and robust hydrogen evolution reaction

Shixiong Min, Yan Duan, Yanan Li and Fang Wang

Renewable Energy, 2020, vol. 155, issue C, 447-455

Abstract: Powderous transition metal-based electrocatalysts have been widely studied for hydrogen evolution reaction (HER), but their practical application still remains challenging due to the tedious slurry-based electrode assembly process and unavoidable stability decay at high current density. Herein, a self-supported H2 evolution cathode based on pomelo peel (PP)-derived porous carbon (PPDC) membrane with embedded Co nanoparticles (Co@PPDC) is developed by direct carbonization of Co-adsorbed PP (Co2+-PP). Benefiting from the large surface areas, the abundant open and interconnected pores, the highly graphitic PPDC membrane, and the highly dispersed Co nanoparticles, the self-supported Co@PPDC electrode demonstrates superior electrocatalytic performance for HER in 1.0 M KOH solution, with overpotentials of 154 and 264 mV at current densities of 10 and 100 mA cm−2, respectively. In addition, owing to the good structural integrity, the Co@PPDC electrode exhibits an excellent cycling stability for 2000 cycles and a stable current density of ∼100 mA cm−2 at a constant overpotential of 265 mV over 12 h with a nearly 100% Faradaic efficiency (FE) and H2 production rate of 1.56 mmol h−1. Therefore, this work provides a versatile and effective strategy for development of high-performance self-supported electrodes at low cost for large-scale H2 production from electrochemical water splitting.

Keywords: Biomass; Porous carbon membrane; Co nanoparticles; Self-supported electrode; H2 evolution reaction (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:155:y:2020:i:c:p:447-455

DOI: 10.1016/j.renene.2020.03.164

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