Mr Laicong Deng

PhD Project

Project Title: Nanoporous Graphene Materials for Electrochemical Energy Storage and Conversion Application

Supervisors: Yongde Xia and Yanqiu Zhu

 

Project Description:  Graphene is an amazing atom-thick 2D metamaterial possessing high electron conductivity, thermal conductivity, and mechanical and chemical stability. However its accessible surface areas are usually low due to the strong aggregation tendency of graphene sheets. The formation of 3D porous graphene can effectively avoid the stacking of graphene sheets, generating materials with high surface areas. Porous graphene can not only offer large aspect ratios to enhance the stability of porous frameworks to prevent collapse, but also can provide multiple interactions with various species both at the surfaces and through their porous frameworks, benefiting a rapid transportation of ions/molecules or charge carriers within the porous channels. These uncommon features beyond the conventional 2D graphene materials enable such porous graphene to be used as a promising metamaterial in high-performance electrochemical energy storage and conversion devices such as supercapacitors and lithium ion batteries.This programme aims at the synthesis of various nanoporous graphene with tuneable textural properties and controllable pore size from micropores to mesopores and macropores via both hard template and self-assembly methods, and at their applications in supercapacitors and lithium ion batteries. Porous graphene-based nanocomposites will be also investigated in this programme. In this programme, he will widely engage with academic collaborators in France, Spain and China and industrial partner.

6 Month mini-project:  To synthesise and characterise hybrid nanocomposites of graphene oxide (GO) with porous zeolitic inidazolate framework-67 (ZIF-67) and their derived graphene-based composites, and to evaluate their adsorption capacities and electrochemical behavious.