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CC BY V4.0, Open Access
Journal article
NiFe Nanoparticle Nest Supported on Graphene as Electrocatalyst for Highly Efficient Oxygen Evolution Reaction
Small (Weinheim an der Bergstrasse, Germany), Vol.20(15), pp.e2308278-n/a
11/01/2023
PMID: 38009756
Abstract
Designing cost-efffective electrocatalysts for the oxygen evolution reaction (OER) holds significant importance in the progression of clean energy generation and efficient energy storage technologies, such as water splitting and rechargeable metal-air batteries. In this work, an OER electrocatalyst is developed using Ni and Fe precursors in combination with different proportions of graphene oxide. The catalyst synthesis involved a rapid reduction process, facilitated by adding sodium borohydride, which successfully formed NiFe nanoparticle nests on graphene support (NiFe NNG). The incorporation of graphene support enhances the catalytic activity, electron transferability, and electrical conductivity of the NiFe-based catalyst. The NiFe NNG catalyst exhibits outstanding performance, characterized by a low overpotential of 292.3 mV and a Tafel slope of 48 mV dec-1 , achieved at a current density of 10 mA cm- 2 . Moreover, the catalyst exhibits remarkable stability over extended durations. The OER performance of NiFe NNG is on par with that of commercial IrO2 in alkaline media. Such superb OER catalytic performance can be attributed to the synergistic effect between the NiFe nanoparticle nests and graphene, which arises from their large surface area and outstanding intrinsic catalytic activity. The excellent electrochemical properties of NiFe NNG hold great promise for further applications in energy storage and conversion devices.
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Details
- Title
- NiFe Nanoparticle Nest Supported on Graphene as Electrocatalyst for Highly Efficient Oxygen Evolution Reaction
- Creators
- Zhaoyuan LyuSheng YuMaoyu WangPeter TieuJiachi ZhouQiurong ShiDan DuZhenxing FengXiaoqing PanHongfei LinShichao DingQIANG ZHANGYuehe Lin
- Publication Details
- Small (Weinheim an der Bergstrasse, Germany), Vol.20(15), pp.e2308278-n/a
- Academic Unit
- Department of Chemistry
- Publisher
- eScholarship, University of California
- Number of pages
- 8
- Grant note
- NSF (CBET‐1949870) U.S. Department of Energy (DE‐AC02‐06CH11357)
- Identifiers
- 99901181113101842
- Language
- English
- Resource Type
- Journal article