Cation-vacancy-rich NiFe2O4 nanoparticles embedded in Ni3Se2 nanosheets as an advanced catalyst for oxygen evolution reaction

Wu，Baoxin1,2; Zhang，Zijie2; Hu，Yan2; Liu，Jia1; Zou，Xiaohong1; Zhang，Qing2; Yan，Kejun2; Xi，Shibo3; Wang，Guanxiong4; Zhang，Xiao1; Zeng，Lin2; An，Liang1

2024-09-01

10.1016/j.cej.2024.153270

Chemical Engineering Journal   影响因子和分区

1385-8947

Developing efficient and economically viable approaches to produce non-noble metal electrocatalysts with high performance is crucial for anion exchange membrane water electrolyzers. Here, we present a novel and mild two-step method to producing highly active and stability NiFeO/NiSe electrocatalyst by utilizing the dissolution/redeposition effect. Notably, the NiFeO nanoparticles (∼10 nm) wrapped by NiSe nanosheets creating plentiful heterostructures and strong coupling forces to realize high-efficient alkaline water electrocatalysis. Therefore, the NiFeO/NiSe electrocatalyst delivers current densities of 1000 mA cm under overpotentials of 379 mV for alkaline oxygen evolution and operates over 1200 h across a range of current densities from 50 to 1000 mA cm. An anion exchange membrane water electrolyzers with NiFeO/NiSe electrocatalyst exhibits performance (1.85 V @ 0.5 A cm, 2.08 @ 1.0 A cm) superior to that of the benchmark device at room temperature, and robust stability under industrial conditions. Experimental results and theoretical investigations demonstrate that the special encapsulation structure effectively mitigated catalyst migration and modulated the adsorption of O-containing intermediates. This work provides a rational synthesis strategy and provides useful guidelines to facilely fabricate oxygen evolution reaction electrocatalyst with high performance for an industrial water electrolyzer.

Anion exchange membrane water electrolyzer Encapsulation structure Heterostructures Large current density Oxygen evolution reaction

EI

英语

其他

20242616299245

Current density ; Electrocatalysis ; Electrocatalysts ; Electrolysis ; Electrolytic cells ; Hydrogen production ; Ion exchange membranes ; Ions ; Iron compounds ; Nanocatalysts ; Nanoparticles ; Nanosheets ; Oxygen ; Oxygen evolution reaction ; Oxygen vacancies ; Precious metals

Gas Fuels:522 ; Precious Metals:547.1 ; Electricity: Basic Concepts and Phenomena:701.1 ; Nanotechnology:761 ; Electrochemistry:801.4.1 ; Chemical Plants and Equipment:802.1 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Solid State Physics:933 ; Crystalline Solids:933.1

ENGINEERING

2-s2.0-85196530101

Scopus

1.Department of Mechanical Engineering,The Hong Kong Polytechnic University,Kowloon,Hung Hom,Hong Kong
2.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Institute of Chemical and Engineering Sciences,Singapore,1 Pesek Road, Jurong Island,627833,Singapore
4.Shenzhen Academy of Aerospace Technology,Shenzhen,518057,China

Wu，Baoxin,Zhang，Zijie,Hu，Yan,et al. Cation-vacancy-rich NiFe2O4 nanoparticles embedded in Ni3Se2 nanosheets as an advanced catalyst for oxygen evolution reaction[J]. Chemical Engineering Journal,2024,495.

Wu，Baoxin.,Zhang，Zijie.,Hu，Yan.,Liu，Jia.,Zou，Xiaohong.,...&An，Liang.(2024).Cation-vacancy-rich NiFe2O4 nanoparticles embedded in Ni3Se2 nanosheets as an advanced catalyst for oxygen evolution reaction.Chemical Engineering Journal,495.

Wu，Baoxin,et al."Cation-vacancy-rich NiFe2O4 nanoparticles embedded in Ni3Se2 nanosheets as an advanced catalyst for oxygen evolution reaction".Chemical Engineering Journal 495(2024).