氧化石墨烯的酸性还原及其超级电容性能

严正琦; 高江姗; 张鑫韬; 南非; 何燕

doi:10.11949/0438-1157.20190722

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氧化石墨烯的酸性还原及其超级电容性能

材料化学工程与纳米技术 | 更新时间：2026-07-24

- 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
- 化工学报 2019年70卷第12期页码：4881-4888
- 作者机构：
  
  青岛科技大学机电工程学院，山东青岛 266000
- 作者简介：
  
  严正琦（1994—），男，硕士研究生，473139944@qq.com
  何燕（1973—），女，博士，教授，heyan_sd@163.com
- 基金信息：
  
  国家自然科学基金项目(51676103);山东省重点研发项目(2018GGX102007)
- DOI：10.11949/0438-1157.20190722
  中图分类号： O 646
- 收稿：2019-06-25，
  
  修回：2019-09-10，
  
  网络首发：2020-06-09，
  
  纸质出版：2019-12-05
- 稿件说明：
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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

YAN Zhengqi, GAO Jiangshan, ZHANG Xintao, NAN Fei, HE Yan. Acid reduction of graphene oxide and performance of supercapacitor[J]. CIESC Journal, 2019, 70(12): 4881-4888
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 DOI： 10.11949/0438-1157.20190722.

YAN Zhengqi, GAO Jiangshan, ZHANG Xintao, NAN Fei, HE Yan. Acid reduction of graphene oxide and performance of supercapacitor[J]. CIESC Journal, 2019, 70(12): 4881-4888 DOI： 10.11949/0438-1157.20190722.

摘要

采用改进的Hummers法制备氧化石墨烯(GO)，在酸性条件(pH=5)下以180°C进行水热还原，通过调节水热反应时间来制备不同还原程度的还原氧化石墨烯(RGO)。研究了不同的水热反应时间对RGO结构及超级电容性能的影响。结果表明：控制水热反应时间可以制备出还原程度不同的RGO，在电化学测试中，随着水热反应时间的延长，RGO电极的比电容呈先上升后下降的趋势。当水热反应时间为6 h时，RGO电极表现出最佳的超级电容性能，其在1 A/g电流密度下比电容达到251 F/g，相对于GO电极提高了225%。经过500次充放电循环后，RGO-6电极比电容保持率达到92%，具有优异的循环稳定性。

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.

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references

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