使用泡沫镍支撑的镍钴纳米粒子作为无贵金属阳极电催化剂的高性能直接硼氢化过氧化氢燃料电池

IF 4 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Synthetic Metals Pub Date : 2024-08-23 DOI:10.1016/j.synthmet.2024.117729

Tahereh Mohammadi , Mir Ghasem Hosseini , Karim Asadpour-Zeynali , Mir Reza Majidi

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引用次数: 0

摘要

不同镍/钴比的镍-钴纳米粒子被固定在镍泡沫（NF）模板上，并涂覆有还原石墨烯氧化物（rGO），作为一种新型的无惰性金属阳极电催化剂用于性能增强型直接硼氢化燃料电池。Ni50Co50 /rGO/NF 催化剂的电化学活性表面积（EASA）为 1515 平方厘米，是 NF 催化剂（33.3 平方厘米）的 45.5 倍。以 Pt/C（0.5 mg cm-2）为阴极，Ni50-Co50/rGO/NF 为阳极的直接硼氢化过氧化氢燃料电池（DBHPFC）的综合研究结果表明，在 60 ◦C 时，开路电位（OCP）为 1.90 V，最大功率密度为 309 mW cm-2。这些结果表明，电催化剂 Ni50Co50/rGO/NF 具有成本低、易于合成、结构稳定和催化性能高等优点，是 DBHPFC 中用作电催化剂的合适候选材料。

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High-performance direct borohydride-hydrogen peroxide fuel cell using Ni foam-supported Ni-Co nanoparticles as a noble-metal free anode electrocatalyst

The Ni-Co nanoparticles with various Ni/Co ratios are immobilized on a Ni foam (NF) template, coated with reduced graphene oxides (rGO), and used as a novel noble-metal-free anode electrocatalyst for enhanced performance direct borohydride fuel cells. The electrochemical active surface area (EASA) of Ni₅₀Co₅₀ /rGO/NF (1515 cm²) catalyst is 45.5 times larger than NF (33.3 cm²). A comprehensive study of direct borohydride-hydrogen peroxide fuel cell (DBHPFC) by Pt/C (0.5 mg cm⁻²) as a cathode and Ni₅₀-Co₅₀/rGO/NF as an anode is accomplished, so an open-circuit potential (OCP) of 1.90 V and the maximum power density of 309 mW cm⁻² is obtained at 60 ^◦C. These results show that electrocatalyst Ni₅₀Co₅₀/rGO/NF is a suitable candidate for use as an electrocatalyst in DBHPFC due to its low cost, ease of synthesis, excellent structural stability, and high catalytic performance.

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来源期刊

Synthetic Metals 工程技术-材料科学：综合

CiteScore

8.30

自引率

4.50%

发文量

189

审稿时长

33 days

期刊介绍： This journal is an international medium for the rapid publication of original research papers, short communications and subject reviews dealing with research on and applications of electronic polymers and electronic molecular materials including novel carbon architectures. These functional materials have the properties of metals, semiconductors or magnets and are distinguishable from elemental and alloy/binary metals, semiconductors and magnets.