化工学报2019，Vol.70Issue(12)：4881-4888,8.DOI:10.11949/0438-1157.20190722
氧化石墨烯的酸性还原及其超级电容性能
Acid reduction of graphene oxide and performance of supercapacitor
摘要
Abstract
Graphene oxide(GO) was prepared by improved Hummers method. Hydrothermal reduction was performed at 180℃ under acidic conditions (pH=5). Reduced graphene oxide (RGO) with different reduction degrees was prepared by adjusting hydrothermal reduction time. The effects of different hydrothermal reduction time on RGO structure and supercapacitive performance were studied. The results showed that RGO with different degree of reduction could be prepared by controlling the time of hydrothermal reduction. With the increase of hydrothermal reduction time, the specific capacitance of the RGO electrode increases at the beginning and then decreases through electrochemical testing. When the hydrothermal reduction time was 6 h, the RGO electrode showed the best supercapacitive performance, and its specific capacitance reached 251 F/g at 1 A/g current density, which was 225% higher than the GO electrode. After 500 charge and discharge cycles, the RGO-6 electrode has a specific capacitance retention rate of 92%, which has excellent cycle stability.关键词
纳米材料/浆料/氧化石墨烯/酸性还原/电容性能Key words
nanomaterials/ slurry/ graphene oxide/ acid reduction/ capacitance performance分类
数理科学引用本文复制引用
严正琦,高江姗,张鑫韬,南非,何燕..氧化石墨烯的酸性还原及其超级电容性能[J].化工学报,2019,70(12):4881-4888,8.基金项目
国家自然科学基金项目(51676103) （51676103）
山东省重点研发项目(2018GGX102007) （2018GGX102007）
