In Situ Formation of Metal Oxide Nanocrystals Embedded in Laser-Induced Graphene.
Hybrid materials incorporating the advantages of graphene and nanoparticles have been widely studied. Here we develop an improved cost-effective approach for preparation of porous graphene embedded with various types of nanoparticles. Direct laser scribing on metal-complex-containing polyimide film leads to in situ formation of nanoparticles embedded in porous graphene. These materials are highly active in electrochemical oxygen reduction reactions, converting O2 into OH(-), with a low metal loading of less than 1 at. %. In addition, the nanoparticles can vary from metal oxide to metal dichalcogenides through lateral doping, making the composite active in other electrocatalytic reactions such as hydrogen evolution.
Ruquan
R
Ye
Zhiwei
Z
Peng
Tuo
T
Wang
Yunong
Y
Xu
Jibo
J
Zhang
Yilun
Y
Li
Lizanne G
LG
Nilewski
Department of Mechanical & Aerospace Engineering, University of Missouri , Columbia, Missouri 65211, United States.
Jian
J
Lin
James M
JM
Tour
electrochemical oxygen reduction reaction; hydrogen evolution; laser-induced graphene; porous graphene