Reduction of Graphene Oxide Using an Environmentally Friendly Method and Its Application to Energy-Related Materials

Abstract

Since graphene oxide can be synthesized in large quantities by oxidation of inexpensively available natural graphite and can be dispersed in water, it can be coated onto a variety of substrates by solution processes. Graphene oxide can also be reduced to yield reduced graphene oxide, which has similar electronic features to graphene. This review introduces the environmentally friendly methods for the synthesis of reduced graphene oxide utilizing electrochemical and thermal methods and summarizes our recent research results on their application to energy-related materials such as electric double-layer capacitors, thermoelectric devices, transparent conductive films, and lithium-ion secondary batteries.

Recent advances in energy storage with graphene oxide for supercapacitor technology

“…Moreover, efforts are being made to develop scalable and energy-efficient manufacturing methods that can reduce the overall environmental impact of GO production. [238][239][240][241] Another aspect to consider is the potential release of GO nanoparticles into the environment during the use and disposal of SCs. Although GO is generally considered biocompatible, there is still a need to investigate its long-term effects on ecosystems and human health.…”

Thermoelectric Properties of Conductive Freestanding Films Prepared from PEDOT:PSS Aqueous Dispersion and Ionic Liquids

“…Among conducting polymers, poly­(3,4-ethylenedioxythiophene) (PEDOT), which contains poly­(styrenesulfonic acid) (PSS) as a dopant anion (referred to as PEDOT:PSS; Figure a), is most commonly used . In addition, PEDOT:PSS can be used for producing composite materials with nanocarbon compounds, such as graphene − and carbon nanotubes. , PEDOT:PSS is commercially sold for its water dispersion abilities and can easily be coated onto a substrate to create a thin film. However, high electrical conductivity cannot be obtained by coating the commercial product as is.…”

Highly Elastic Melamine Graphene/MWNT Hybrid Sponge for Sensor Applications

“…Graphene oxide (GO) is a hydrophilic derivative of graphene derived from graphite’s oxidative treatment. It has received tremendous attention since it is easily prepared in large quantities in monolayers, and although it is a nonconductive material, it becomes conductive by several simple reduction processes [ 21 ]. GO has been shown in the literature that it can be organized into lightweight, porous, 3D structures such as aerogels, foams, or sponges in several ways.…”