Electrochemical Synthesis of 3D Porous Co(OH)2/ErGO Nanoflake for High-Performance Supercapacitor and Non-Enzymatic Glucose Sensor

DOI

10.2991/iceesd-18.2018.76How to use a DOI?

Keywords

supercapacitors; graphene; Co(OH)2; glucose sensor

Abstract

Co(OH)2 is a promising electrochemical material owing to its high theoretical specific capacitance, low cost and eco-friendliness. However, the poor conductivity hinders its application. In this work, 3D porous Co(OH)2/ErGO nanoflake vertically grown on the surface of Ni foam (NF) through a facile two-step electrodeposition approach, avoiding the need for binders and conducting agents. When used for supercapacitors (SCs), the Co(OH)2/ErGO/NF electrode exhibits a high specific capacitance of 857.1 F g-1 at a current density of 2 A g-1, and a favorable cycling stability with 85.0% retention even at 12 A g-1 after 2000 cycles. Additionally, serving as a non-enzymatic sensor, the 3D Co(OH)2/ErGO/NF electrode exhibits remarkable electrocatalytic activity towards glucose oxidation with a high sensitivity of 10.2 mA mM-1 cm-2. Owing to its favorable electrochemical performance, the 3D Co(OH)2/ErGO/NF electrode with porous structure has great potential applications in the fields of electrochemical SCs and non-enzymatic glucose sensors.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Yu Yang
AU  - Lei Wang
PY  - 2018/05
DA  - 2018/05
TI  - Electrochemical Synthesis of 3D Porous Co(OH)2/ErGO Nanoflake for High-Performance Supercapacitor and Non-Enzymatic Glucose Sensor
BT  - Proceedings of the 2018 7th International Conference on Energy, Environment and Sustainable Development (ICEESD 2018)
PB  - Atlantis Press
SP  - 428
EP  - 434
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceesd-18.2018.76
DO  - 10.2991/iceesd-18.2018.76
ID  - Yang2018/05
ER  -