Interface engineering of LaSrCoO-N-CDs-FeOOH composites for synergistic water-splitting catalysis

IF 16.8 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy Pub Date : 2025-05-24 DOI:10.1016/j.nanoen.2025.111170

Sang Heon Kim , Ji Young Park , Sung Yeol Choi , Jeongeun Mo , Hyun-Cheol Song , Chungseok Choi , Hyesung Park , Jeong Min Baik

引用次数: 0

Abstract

Efficient and durable electrocatalysts are essential for sustainable water splitting. Here, we present a La_0.5Sr_0.5CoO₃ (LSC)-N-doped carbon dots (N-CDs)-FeOOH composite synthesized via wet ball milling. N-CDs act as electron bridges, enhancing charge transfer and inducing partial amorphization of FeOOH, which improves catalytic activity. The optimized composite achieves low overpotentials of 295 mV and 308 mV for OER and HER at 10 mA/cm² in 1.0 M KOH aqueous solution, with reduced charge transfer resistance and increased active surface area. Long-term testing at 500 mA/cm² for 230 hours demonstrated exceptional stability. These results establish LSC-N-CDs-FeOOH as a promising candidate for high-performance water-splitting electrocatalysts.

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lasrco - n - cds - feooh复合材料协同水裂解催化界面工程

高效、耐用的电催化剂是可持续水分解的必要条件。本文采用湿法球磨法制备了La0.5Sr0.5CoO3 (LSC)- n掺杂碳点(N-CDs)-FeOOH复合材料。N-CDs作为电子桥，增强了FeOOH的电荷转移，诱导其部分非晶化，从而提高了FeOOH的催化活性。优化后的复合材料在1.0 M KOH水溶液中，在10 mA/cm2下，OER和HER的过电位分别为295 mV和308 mV，降低了电荷转移电阻，增加了活性表面积。在500 mA/cm2下测试230小时，表现出优异的稳定性。这些结果表明LSC-N-CDs-FeOOH是一种很有前途的高性能水分解电催化剂。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano Energy CHEMISTRY, PHYSICAL-NANOSCIENCE & NANOTECHNOLOGY

CiteScore

30.30

自引率

7.40%

发文量

1207

审稿时长

23 days

期刊介绍： Nano Energy is a multidisciplinary, rapid-publication forum of original peer-reviewed contributions on the science and engineering of nanomaterials and nanodevices used in all forms of energy harvesting, conversion, storage, utilization and policy. Through its mixture of articles, reviews, communications, research news, and information on key developments, Nano Energy provides a comprehensive coverage of this exciting and dynamic field which joins nanoscience and nanotechnology with energy science. The journal is relevant to all those who are interested in nanomaterials solutions to the energy problem. Nano Energy publishes original experimental and theoretical research on all aspects of energy-related research which utilizes nanomaterials and nanotechnology. Manuscripts of four types are considered: review articles which inform readers of the latest research and advances in energy science; rapid communications which feature exciting research breakthroughs in the field; full-length articles which report comprehensive research developments; and news and opinions which comment on topical issues or express views on the developments in related fields.