γ辐射辅助合成镍钴氧化物复合材料：晶体结构对超级电容器效率的影响

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2025-01-22 DOI:10.1016/j.jallcom.2025.178736

Jirawat Trakulmututa, Bordin Weerasuk, Phongphak Sataman, Threeraphat Chutimasakul, Krongthong Kamonsuangkasem, Siwaporn Meejoo Smith, Natee Sirisit, Tanagorn Sangtawesin

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引用次数: 0

摘要

本研究探索了一种创新的伽马辐照方法，用于合成先进超级电容器用镍钴氧化物（NCO）复合材料。不同的辐照剂量有利于混合相结构的形成，其中XRD分析显示岩盐（NiO或NiCoO₂）与尖晶石（Co₃O₄或NiCo₂O₄）相之间存在剂量依赖关系。在300 kGy （300NCO）下合成的复合材料获得了73 fg -1的比电容。此外，在300 kGy （300NCO_D）下制备NCO的稀释前驱体方法比300NCO表现出更好的电化学性能，达到103.5 fg -1的比电容。此外，在Swagelok电池中对300NCO_D电极进行5 kGy的γ辐照处理，提高了长期稳定性，在10,000次循环中保持92%的电容。这项研究强调了伽马辐射作为一种清洁和可扩展的方法，可以显著调节双金属氧化物的相形成，通过提高电极的均匀性和稳定性来推进储能技术。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Gamma-Irradiation Assisted Synthesis of Nickel-Cobalt Oxide Composites: Crystal Structure Dependency for Supercapacitor Efficiency

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Gamma-Irradiation Assisted Synthesis of Nickel-Cobalt Oxide Composites: Crystal Structure Dependency for Supercapacitor Efficiency

This study explored an innovative gamma-irradiation approach for the synthesis of nickel-cobalt oxide (NCO) composites for advanced supercapacitors. Varying irradiation doses facilitated the formation of mixed-phase structures, where XRD analysis revealed a dose-dependent relationship between rock-salt (NiO or NiCoO₂) and spinel (Co₃O₄ or NiCo₂O₄) phases. The composite synthesized at 300 kGy (300NCO) achieved a specific capacitance of 73 F.g^-1. Furthermore, the diluted-precursor method for preparation NCO at 300 kGy (300NCO_D) demonstrated a better electrochemical performance than 300NCO, achieving a specific capacitance of 103.5 F.g^-1. Additionally, gamma-irradiation treatment at 5 kGy applied to the 300NCO_D electrode in a Swagelok cell improved long-term stability, retaining 92% capacitance over 10,000 cycles. This study highlights gamma irradiation as a clean and scalable method to significantly tune phase formation in bimetallic oxides, advancing energy storage technology by enhancing electrode uniformity and stability.

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.