Upcycling electroplating sludge into bioengineering-enabled highly stable dual-site Fe-Ni_(2)P@C electrocatalysts for efficient oxygen evolution  

作　　者：Jiawen Liu Zunpeng Zuo Feng Gao Kai Yi Jiahui Lin Mengye Wang Zhang Lin Feng Huang 

机构地区：[1]State Key Laboratory of Optoelectronic Materials and Technologies,School of Materials,Sun Yat-Sen University,Guangzhou 510275,China [2]Department of Chemistry,City University of Hong Kong,Hong Kong 999077,China [3]School of Metallurgy and Environment,Central South University,Changsha 410083,China [4]Ganjiang Innovation Academy,Chinese Academy of Sciences,Ganzhou 341000,China

出　　处：《Nano Research》2024年第8期6984-6992,共9页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.21905317 and U23B20166);the Young Elite Scientists Sponsorship Program by CAST(No.2019QNRC001);the Fundamental Research Funds for the Central Universities,Sun Yat-sen University(No.76180-31620007).

摘　　要：The advancement of bimetallic catalysts holds significant promise for the innovation of oxygen evolution reaction(OER)catalysts.Drawing from adsorbate evolution mechanism(AEM)and lattice oxygen oxidation mechanism(LOM),the incorporation of dual active sites has the potential to foster novel OER pathways,such as the coupled oxygen evolution mechanism(COM),which can surpass the limitations of OER and elevate catalytic performance.In this study,uniformly distributed Fe/Ni dual-site Fe-Ni_(2)P@C electrocatalysts are crafted by upcycling metals in electroplating sludge via an eco-friendly and sustainable microbial engineering technique.Our findings indicate that a substantial number of defects emerge at the Ni2P crystal during the OER process,laying the groundwork for lattice oxygen involvement.Moreover,the displacement of Ni/Fe in the crystal lattice intensifies the asymmetry of the electronic structure at the metal active sites,facilitating the deprotonation process.This research introduces an innovative paradigm for the synthesis of effective and robust transition metal-based OER catalysts,with implications for sustainable energy generation technologies.

关 键 词：oxygen evolution reaction dual active sites adsorbate evolution mechanism lattice oxygen mechanism BIOENGINEERING 

分 类 号：O64[理学—物理化学]