Maximized atom utilization in a high-entropy metallene via single atom alloying for boosted nitrate electroreduction to ammonia
Yuanbo Zhou1,2,3, Lifang Zhang4, Mengfan Wang5, Xiaowei Shen4, Zebin Zhu1, Tao Qian4, Chenglin Yan5,6（晏成林）*，Jianmei Lu1（路建美）*
1College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China
2School of Optical and Electronic Information, Jiangsu/Suzhou Key Laboratory of Biophotonics, Suzhou City University, Suzhou, China
3International Joint Metacenter for Advanced Photonics and Electronics, Suzhou City University, Suzhou, China
4School of Chemistry and Chemical Engineering, Nantong University, Nantong, China
5College of Energy, Key Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical Industry, Soochow University, Suzhou, China
6School of Petrochemical Engineering, Changzhou University, Changzhou, China
Nat. Commun.2025,16, 7915
Abstract: High-entropy alloys, with their unique structural characteristics and intrinsic properties, have evolved to be one of the most popular catalysts for energy-related applications. However, the geometry of the traditional nanoparticle morphology confines the majority of active atoms to the particle core, deeming them ineffective. In this study, we present a class of two-dimensional high-entropy alloys, namely, high-entropy metallenes, constructed by alloying various single-atom metals in atomically thin layers and reveal their great feasibility for electrocatalytic nitrate reduction to ammonia. Through multimetal interactions, various active centres are formed and sufficiently exposed over the metallene. Each element performs its own duties and jointly lowers the energy barrier of the rate-determining step. As expected, the proof-of-concept PdCuNiCoZn high-entropy metallene delivers satisfactory catalytic performance across wide pH ranges. In particular, in a strongly alkaline electrolyte, a maximum ammonia yield rate of 447 mg h−1 mg−1 and a high Faradaic efficiency of 99.0% are achieved.
Article information: https://doi.org/10.1038/s41467-025-63317-1
