Egg albumen templated graphene foams for high-performance supercapacitor electrodes and electrochemical sensors
Artikel i vetenskaplig tidskrift, 2018

We demonstrate a simple and scalable strategy to obtain N, S and Si co-doped biocompatible graphene foams (GFs) with different shapes using egg albumen as the template. The unique porous structure and element doping endow the GFs with a high charge-discharge rate and good wettability, which largely improve the electrochemical performance of the electrodes, including ultrahigh specific capacitance (534 F g-1at 1 A g-1), and excellent rate capability (308 F g-1at 100 A g-1) and cycling performance (96.1% retention of the initial capacitance after 10000 cycles at a high current density of 10 A g-1). Besides, when used as an electrochemical sensor for dopamine, the GF exhibits a detection limit as low as 1.2 μM with a linear response up to 70 μM, due to the low equivalent series resistance. These reveal great potential for promoting the application of 3D graphene in energy storage and electrochemical sensors.

Författare

Ya Liu

Fudan University

Chalmers, Mikroteknologi och nanovetenskap (MC2)

Xiaoli Zhao

Fudan University

Cancan Wang

Fudan University

Long Zhang

Fudan University

Mengxiong Li

Fudan University

Yunmei Pan

Fudan University

Yifeng Fu

Chalmers, Mikroteknologi och nanovetenskap (MC2), Elektronikmaterial och system

Johan Liu

Shanghai University

Chalmers, Mikroteknologi och nanovetenskap (MC2), Elektronikmaterial och system

Hongbin Lu

Fudan University

Journal of Materials Chemistry A

2050-7488 (ISSN)

Vol. 6 37 18267-18275

Ämneskategorier

Oorganisk kemi

Materialkemi

Annan kemiteknik

DOI

10.1039/c8ta04561e

Mer information

Senast uppdaterat

2018-10-17