4.6 Article

The Effects of Graphene Oxide and Reduced Graphene Oxide Conductive Additives on Activated Carbon Supercapacitors

期刊

PROCESSES
卷 10, 期 11, 页码 -

出版社

MDPI
DOI: 10.3390/pr10112190

关键词

supercapacitor; graphene oxide; reduced graphene oxide; activated carbon

资金

  1. National Science Foundation (NSF) [HRD 1547771, HRD 1036494]
  2. National Science Foundation [ECCS-2025064]

向作者/读者索取更多资源

Researchers incorporated synthesized GO and rGO in AC electrodes and found that they moderately enhance the rate resistance and capacity. However, the overall ineffectiveness of GO and rGO is attributed to their isolation and infrequent distribution method.
With their relative ease of production and coupled strong surface functionality and electrical conductivity properties, graphene oxide (GO) and reduced graphene oxide (rGO) are exciting, yet overlooked, graphene-like additive prospects for activated carbon (AC) electrodes in supercapacitors. In this work, we incorporated small amounts of synthesized GO and rGO in AC electrodes via a simple mixing procedure to explore their effects. In addition to materials characterizations, symmetric supercapacitors were made from these electrodes and tested across current densities ranging from 0.1-10 A g(-1) and across 10,000 additional charge-discharge cycles at 2 A g(-1). Performance measurements indicate that GO and rGO enhance the rate resistance and capacity, respectively, of AC electrodes, but these effects are modest and do not prevent increases in internal resistance over the course of 10,000 cycles. The overall ineffectuality of GO and rGO is reasoned to be due to their isolation and infrequency as a result of the relatively impotent distribution method used.

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