Bifunctional PdPt bimetallenes for formate oxidation-boosted water electrolysis
摘要 Small-molecule electrooxidation-boosted water electrolysis(WE)is an energy-saving method for hydrogen(H2)production.Herein,PdPt bimetallenes(PdPt BMLs)are obtained through the simple galvanic replacement reaction.PdPt BMLs reveal 2.93-fold enhancement in intrinsic electroactivity and 4.53-fold enhancement in mass electroactivity for the formate oxidation reaction(FOR)with respect to Pd metallenes(Pd MLs)at 0.50 V potential due to the synergistic effect.Meanwhile,the introduction of Pt atoms also considerably increases the electroactivity of PdPt BMLs for hydrogen evolution reaction(HER)with respect to Pd MLs in an alkaline medium,which even exceeds that with the use of commercial Pt nanocrystals.Inspired by the outstanding FOR and HER electroactivity of bifunctional PdPt BMLs,a two-electrode FOR-boosted WE system(FOR-WE)is constructed by using PdPt BMLs as the cathode and the anode.The FOR-WE system only requires an operational voltage of 0.31 V to achieve H2 production,which is 1.48 V lower than that(ca.1.79 V)with the use of the traditional WE system.
Author: Xi-Lai Liu Yu-Chuan Jiang Jiang-Tao Huang Wei Zhong Bin He Pu-Jun Jin Yu Chen
作者单位: Key Laboratory of Macromolecular Science of Shaanxi Province,Key Laboratory of Applied Surface and Colloid Chemistry(Ministry of Education),Shaanxi Key Laboratory for Advanced Energy Devices,Shaanxi Engineering Lab for Advanced Energy Technology,School of Materials Science and Engineering,Shaanxi Normal University,Xi'an,Shaanxi,PR China College of New Materials and New Energies,Shenzhen Technology University,Shenzhen,Guangdong,PR China
刊 名 碳能源(英文) SCI
年,卷(期): 2023, 5(12)
机标分类号: O643 TG178 TP75
在线出版日期: 2024年4月25日