DataVXACS Applied Nano MaterialsPaper
journal article·2025-08-22

Microwave-Induced Dense Crystal–Amorphous FexNiyOOH Nanosheets as Stable Electrocatalysts for Oxygen Evolution

Xiaolin Zhang, Danfeng He, Bingdong Yan, Yuping Dai, Wei Sun, Xiaohong Wang, Mingliang Guo, Yang Cao

ACS Applied Nano Materials· Volume 8· Issue 33
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Source abstract

Abstract

Interfacial engineering between crystallin and amorphous phases plays a significant role in the development of highly efficient and stable electrocatalysts. Conventional heterostructures synthesized via asynchronous methods often suffer from limited interfacial density, which compromises their durability. Here, we present densely integrated crystalline–amorphous Fe x Ni y OOH nanosheets synthesized via a one-step microwave thermal shock strategy. This dense crystalline–amorphous architecture confers exceptional structural and operational stability and enables continuous oxygen evolution reaction (OER) operation at 10 mA cm –2 for over 1000 h without significant degradation. Density functional theory (DFT) calculations attribute the sustained performance to the stable spin-state modulation at the high-density interfaces, where the Fe-induced high-spin nickel optimizes intermediate adsorption while preserving stable Fe site activity. The achievement of a low overpotential of 243 mV at 10 mA cm –2 and the unprecedented longevity offer valuable insights for advancing the design of durable electrocatalysts toward practical commercialization.
Source: openalex_inverted_index · Quality: baseline

Research context

NanomaterialsCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Electrochemical Analysis and Applications · Advanced battery technologies research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Science, Laboratory of Child Cognition & Behavior Development of Hainan Province

Qiongtai Normal University

Hainan Engineering Research Center of Tropical Ocean Advanced Optoelectronic Functional Materials, Hainan International Joint Research Center of Marine Advanced Photoelectric Functional Materials, College of Chemistry and Chemical Engineering

Hainan Normal University

State Key Laboratory of Tropic Ocean Engineering Materials and Materials Evaluation, School of Chemistry and Chemical Engineering

Hainan University

School of Automotive Materials

Hubei University of Automotive Technology

Funding

Education Department of Hainan Province · Natural Science Foundation of Hainan Province · Natural Science Foundation of Hubei Province · Hubei University of Automotive Technology · National Natural Science Foundation of China · Key Laboratory Open Fund Project of Laser Technology and Optoelectronic Functional Materials of Hainan Province · Laboratory of Child Cognition and Behavior Development of Hainan Province

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