Pt纳米颗粒嵌入镍氢ldh纳米花作为可充电锌-空气水电池的高性能阴极

IF 4.2 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemical Communications Pub Date : 2025-09-26 DOI:10.1039/d5cc04360c

Meilin Nie, Dapeng Liu, Zerui Fu, Xianhang Li, Yu Zhang

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引用次数: 0

摘要

可充电水锌空气电池（ZABs）因其高能量密度（1370 Wh kg -1）、安全性和环境友好性而被看好，但其发展受到缓慢的氧氧化还原动力学的阻碍。本文采用原位还原法合成了嵌入NiFe层状双氢氧化物（Pt/NiFe- ldh）纳米花的Pt纳米颗粒。作为阴极，Pt/NiFe-LDH表现出显著的双功能活性，ΔE值为0.631 V，氧还原反应的半波电位为0.861 V，析氧反应的过电位为262 mV，超过了商业Pt/C和ruo2基准。当部署在ZABs中时，Pt/NiFe-LDH阴极在1300小时内具有出色的循环稳定性。

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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Pt Nanoparticles Embedded NiFe-LDH Nanoflowers as High-Performance Cathode for Rechargeable Aqueous Zinc-Air Batteries

Rechargeable aqueousZn-air batteries (ZABs) are promising due to their high energy density (1370 Wh kg -1 ), safety, and environmental friendliness, but their development is hindered by slow oxygen redox kinetics. Herein, we have synthesized Pt nanoparticles embedded NiFe layered double hydroxide (Pt/NiFe-LDH) nanoflowers via an in situ reduction method. As cathode, Pt/NiFe-LDH can exhibit remarkable bifunctional activity with an impressive ΔE value of 0.631 V, which achieves a half-wave potential of 0.861 V for oxygen reduction reaction and a low overpotential of 262 mV at 10 mA cm -² for oxygen evolution reaction, surpassing commercial Pt/C and RuO 2 benchmarks. When deployed in ZABs, the Pt/NiFe-LDH cathode delivers remarkable cycling stability over 1300 h.

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来源期刊

Chemical Communications 化学-化学综合

CiteScore

8.60

自引率

4.10%

发文量

2705

审稿时长

1.4 months

期刊介绍： ChemComm (Chemical Communications) is renowned as the fastest publisher of articles providing information on new avenues of research, drawn from all the world''s major areas of chemical research.