Innovative hydrothermal synthesis of NiAl LDHs and their enhanced electrochemical performance via graphene oxide composites

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications Pub Date : 2025-10-01 DOI:10.1016/j.inoche.2025.115602

Yong Zhang , Xin Jing , Rong-Bi Yin , Yu-Fei Wei , Ze-Yu Fan , Hai-Li Gao

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Abstract

Layered double hydroxides (LDHs) have emerged as potential candidates for supercapacitor electrode materials due to their excellent physicochemical properties. In this study, pure NiAl LDHs and NiAl LDHs/graphene oxide (GO) composites with single-layer GO were successfully prepared via the hydrothermal method. A systematic comparison of their physicochemical properties and electrochemical performances was conducted. The layered structure and composite effect of the materials were confirmed by XRD, XPS, and SEM characterizations. Electrochemical tests revealed that under the condition of a molar ratio of nickel to aluminum raw materials of 3: 2, the pure NiAl LDHs material exhibits the best electrochemical performance. For the NiAl LDHs/GO₂₅ composite material, after introducing 25 mL of 0.5 mg mL⁻¹ GO at a current density of 1 A·g⁻¹, the specific capacitance of the NiAl LDHs/GO₂₅ composite material reaches 2209 F g⁻¹, which is a 12.6 % increase compared with that of the pure NiAl LDHs (1962 F g⁻¹). The enhanced performance of the NiAl LDHs/GO₂₅ composite was attributed to the improved electrical conductivity and optimized structural stability provided by GO. This study provides experimental evidence and new strategies for the design of high-performance and low-cost supercapacitor electrode materials.

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创新水热合成NiAl型LDHs及其氧化石墨烯复合材料的电化学性能

层状双氢氧化物（LDHs）由于其优异的物理化学性质而成为超级电容器电极材料的潜在候选材料。本研究通过水热法制备了纯NiAl - LDHs和单层氧化石墨烯的NiAl - LDHs/氧化石墨烯（GO）复合材料。对其理化性质和电化学性能进行了系统的比较。通过XRD、XPS和SEM表征证实了材料的层状结构和复合效果。电化学测试表明，在镍铝原料摩尔比为3:2的条件下，纯NiAl LDHs材料表现出最佳的电化学性能。对于NiAl LDHs/GO25复合材料，在1 a·g−1电流密度下注入25 mL 0.5 mg mL−1氧化石墨烯后，NiAl LDHs/GO25复合材料的比电容达到2209 F g−1，比纯NiAl LDHs （1962 F g−1）提高了12.6%。NiAl LDHs/GO25复合材料性能的增强主要归功于氧化石墨烯提高的导电性和优化的结构稳定性。本研究为高性能、低成本超级电容器电极材料的设计提供了实验依据和新策略。

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

Inorganic Chemistry Communications 化学-无机化学与核化学

CiteScore

5.50

自引率

7.90%

发文量

1013

审稿时长

53 days

期刊介绍： Launched in January 1998, Inorganic Chemistry Communications is an international journal dedicated to the rapid publication of short communications in the major areas of inorganic, organometallic and supramolecular chemistry. Topics include synthetic and reaction chemistry, kinetics and mechanisms of reactions, bioinorganic chemistry, photochemistry and the use of metal and organometallic compounds in stoichiometric and catalytic synthesis or organic compounds.