化工学报2017，Vol.68Issue(12)：4824-4832,9.DOI:10.11949/j.issn.0438-1157.20171036
石墨烯/δ-MnO2复合材料的制备及其超级电容器性能
Preparation of graphene/δ-MnO2 composites and supercapacitor performance
摘要
Abstract
This work mainly uses the one pot to synthesis RGO/δ-MnO2 composites, which is characterized using X-ray powder diffraction (XRD), low pressure nitrogen adsorption stripping (BET), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), transmission electron microscope (TEM), energy spectrum (EDS) and thermal gravimetric analyzer (TGA). The electrochemical performance is tested by the cyclic voltammetry (CV), constant current charge/discharge test (GCD) and loop test. Results show that the RGO/δ-MnO2 composites possess more excellent electrochemical performance than pure δ-MnO2 and pure graphene. When the current density is 1 A·g-1, the specific capacitance of RGO/δ-MnO2 composite can reach 322.6 F·g-1, which is higher than that of the pure δ-MnO2 (234.2 F·g-1) and the pure graphene (212.1 F·g-1). Moreover, the specific capacitance retention of RGO/δ-MnO2 composites remains 79.1％ when current density increases to 10 A·g-1. The specific capacitance of RGO/δ-MnO2 composite is still as high as 252 F·g-1 (99.6％) even after 1000 times constant current charge/discharge tests. These results indicate that the composite will be a kind of promising supercapacitor electrode material.关键词
超级电容器/电极材料/比电容/电化学Key words
supercapacitor/electrode material/specific capacitance/electrochemistry分类
化学化工引用本文复制引用
朱红艳,赵建国,庞明俊,蒋尚,邢宝岩,强丁丁,杜雅琴..石墨烯/δ-MnO2复合材料的制备及其超级电容器性能[J].化工学报,2017,68(12):4824-4832,9.基金项目
山西省石墨烯产业化应用技术协同创新中心项目 （）
山西省石墨烯功能材料工程技术研究中心项目(201705D141034) （201705D141034）
山西省人才专项(优秀人才科技创新)(201705D211010) （优秀人才科技创新）
山西省重点研发计划(工业项目)(201703D121037-2) （工业项目）
大同市应用基础研究项目(2017123). supported by Shanxi Graphene Industrialization Application Technology of Collaborative Innovation Center, Shanxi Graphene Functional Materials Engineering Technology Research Center (201705D141034), the Special Talents in Shanxi Province (Talents Science and Technology Innovation)(201705D211010),the Key Research Plan (Project) in Industry of Shanxi Province (201703D121037-2) and Datong Applied Basic Research (2017123). （2017123）
