ZnO/RGO复合材料的制备及其超级电容器性能

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文章编号： 1672-6987（2023）03-0061-09； DOI： 10.16351/j.1672-6987.2023.03.008

周杨， 王欢欢， 高江姗*， 何燕*， 严正琦(青岛科技大学 机电工程学院；山东省高性能碳材料制备及应用工程实验室；

山东省智能绿色制造技术与装备协同创新中心，山东 青岛266061)

摘要： 在改进的Hummers法制备氧化石墨烯（GO）的基础上，采用一步水热法达到3个目的：合成ZnO、GO还原为还原氧化石墨烯（RGO）和生成ZnO/RGO复合材料，制备得到ZnO纳米球镶嵌于RGO纳米片的复合材料，此方法能够实现RGO与ZnO均匀分布并解决了ZnO颗粒黏连的问题。研究表明：在不同的电解液中，电极材料表现出的电化学性能会有所不同，在Na2SO4电解液中测试时，ZnO/RGO复合电极材料在02 A·g-1下由充放电曲线所得的比电容高达1008 F·g-1，比ZnO的比电容高310%；在KOH电解液中ZnO/RGO复合电极材料的比电容为535 F·g-1，比ZnO的比电容高726%；同时表明RGO与ZnO所构成的复合材料比ZnO的电化学性能有显著提升，这归功于高导电性RGO的复合及ZnO与RGO的协同效应。

关键词： 纳米材料； 超级电容器； 还原氧化石墨烯； 氧化锌

中图分类号： TB 333文献标志码： A

引用格式： 周杨，王欢欢，高江姗，等.ZnO/RGO复合材料的制备及其超级电容器性能［J］. 青岛科技大学学报(自然科学版), 2023, 44(3): 61-69.

ZHOU Yang, WANG Huanhuan, GAO Jiangshan,et al. Preparation and supercapacitor performances of ZnO/RGO composites［J］. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2023， 44（3）： 61-69.

Preparation and Supercapacitor Performances of ZnO/RGO Composites

ZHOU Yang, WANG Huanhuan, GAO Jiangshan, HE Yan, YAN Zhengqi

(College of Electromechanical Engineering; Shandong Engineering Laboratory for Preparation and Application of High-performance

Carbon Materials; Collaborative Innovation Center of Intelligent Green Manufacturing Technology

and Equipment,Qingdao University of Science and Technology, Qingdao 266061，China)

Abstract: The graphene oxide (GO) is obtained by using modified Hummers method. Then ZnO / RGO composites are achieved by one-step hydrothermal method, including the synthesis of ZnO and the reduction of GO. This strategy can make RGO and ZnO have an uniform distribution and solve the problem of ZnO particles sticking. The difference of electrochemical performance exists at the various electrolyte measurement-systems. When the electrolyte is Na2SO4 solution, the specific capacitance of ZnO/RGO electrode is up to 1008 F·g-1 at 02 A·g-1 calculated by galvanostatic discharge-charge (GCD) curves, which is 310% higher than that of ZnO. In the KOH alkaline electrolyte system, the specific capacitance calculated by GCD curves is 535 F·g-1 at 02 A·g-1, the specific capacitance and rate capability of ZnO/RGO electrode are 726% and 8% higher than those of ZnO, respectively. Furthermore, the electrochemical performances of the composite material ZnO/RGO are significantly enhanced on the basis of ZnO, which is attributed to the high conductivity of RGO and the synergistic effect of 3D ZnO and 2D RGO.

Key words: nanomaterials; supercapacitor; reduced graphene oxide; ZnO

收稿日期： 2022-05-01

基金项目： 国家自然科学基金项目（52176076）；山东省泰山学者项目（ts20190937）；山东省智能绿色制造技术与装备协同创新中心专项经费项目（IGSD-2010-010）.

作者简介： 周杨（1997—），男，硕士研究生.*通信联系人.