Recently, associated professor Li Fei’s research team has
published an article in Electrochimica Acta entitled
"Ultrafine Co-doped ZnO nanoparticles on reduced graphene oxide as an
efficient electrocatalyst for oxygen reduction reaction" thesis.
The preparation of cheap and efficient oxygen reduction
reaction is the key to the development of new energy sources such as fuel cells
and metal air batteries. In this paper, cobalt doped nanoparticles / reduced
graphene oxide (Co-doped ZnO NPs@rGO) composites were prepared by a simple
method of reflux and calcination. The experiment found that when CO doping
concentration is 0.38, Co0.38Zn0.62O NPs@rGO composites exhibited a good
electrocatalytic performance for oxygen reduction: the initial potential is
0.90 V, the limiting current density is 3.94 mA/cm-2. And the reaction to four
electron reduction of oxygen is better than the traditional one with the
electrochemical stability of Pt/C catalyst and methanol resistance. It is the
first time to propose the possibility of using ZnO semiconductor material doped
with oxygen to reduce the catalytic activity of Co2+ as a new type of oxygen
reduction electrocatalyst.
Other co-authors of the paper include: master Sun Yao, Xin
Shuli, and undergraduate Shen Zi Chao.
Links:
http://www.sciencedirect.com/science/article/pii/S0013468616325658