Synthesis of electrochemically-reduced graphene oxide film with controllable size and thickness and its use in supercapacitor

By Xu-Yuan Peng, Xiao-Xia Liu, Dermot Diamond, K. Lau. 2011

289 citations recorded by the source corpus.

Abstract An electrochemical synthesis method of reducing graphene oxide (GO) under constant potential is reported. Electrochemical technique offers control over reaction parameters such as the applied voltage, electrical current and reduction time; whereas the desired size and thickness of the film can be pre-determined by controlling the amount of precursor GO deposited on the electrode with defined shape and surface area. This synthesis technique produces high quality electrochemically reduced GO (ERGO) film with controllable size and thickness. Electrochemical symmetrical supercapacitors based on ERGO films achieved a specific capacitance of 128 F/g with an energy density of 17.8 Wh/kg operating within a potential window of 1.0 V in 1.0 M NaNO3. The supercapacitor was shown to be stable, retaining ca. 86% of the original specific capacitance after 3500 charge–discharge cycles. The results indicate that this simple synthesis technique for providing graphene-like materials has great potential in various applications such as energy storage.

Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/cdbc996d1a13bb6ceeede0ae65e83606047b9289

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Electrical and Electronic Engineering

1. Qiang Zhang
2. Jia-qi Huang
3. Quan-hong Yang
4. B. Pérez-López
5. Arben Merkoci
6. Jiang Yang
7. S. Gunasekaran
8. Xin‐Bing Cheng

In Electronic, Optical and Magnetic Materials

1. Qiang Zhang
2. Jia-qi Huang
3. Quan-hong Yang
4. Jiang Yang
5. S. Gunasekaran

In Materials Chemistry

1. Qiang Zhang
2. Jia-qi Huang
3. Quan-hong Yang
4. Arben Merkoci
5. Jinqing Wang
6. Jiang Yang
7. S. Gunasekaran
8. Zhangpeng Li

Citations in the corpus

• Electrochemically reduced graphene oxide sheets for use in high performance supercapacitors (2013, methodology): “[26] Peng X-Y, Liu X-X, Diamond D, Lau KT.”
• Synthesis of fluorinated graphene with tunable degree of fluorination (2012, background): “8 eV, corresponding to CAC, CAO, AC@O and ACOOA groups, respectively [19,20].”
• Annealing a graphene oxide film to produce a free standing high conductive graphene film (2012, background): “[39] Peng X-Y, Liu X-X, Diamond D, Lau KT.”
• Carbon nanotubes and graphene in analytical sciences (2012, background): “nun de ca ne , ndo de ca ne G C S – S ta tio na ry ph as e [4 7]”