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Volume 7, Issue 2 (Suppl)
J Phys Chem Biophys, an open access journal
ISSN: 2161-0398
Electrochemistry 2017
July 10-11, 2017
Electrochemistry
3
rd
International Conference on
July 10-11, 2017 Berlin, Germany
3D structured porous transition-metals poly-phosphides nano-needle arrays as an efficient bifunctional
electrocatalyst for the evolution reaction of hydrogen and oxygen
Shijian Chen, Tianli Wu
and
Mingyu Pi
Chongqing University, China
T
he design and development of high-efficiency and non-noble metal hydrogen evolution reaction (HER) electrocatalysts with
optimized nanostructures for human clean and sustainable energy systems has attracted significant research interest over the
past years. Herein, self-supported transition-metals poly-phosphides (TMP) (such as CoP3, WP2) nanoneedle arrays on carbon cloth
were topotactically fabricated by
in situ
phosphidation of a transition-metals oxides nanoneedle arrays precursor. Such a binder-free
flexible HER electrocatalysts with integrated three-dimensional nanostructures can not only provide a large surface area to expose
abundant active sites, but also facilitate electrolyte penetration for electrons and electrolyte ions, which exhibit superior bifunctional
electrocatalytic activity and durability for both the HER and OER. In addition, density functional theory (DFT) calculations indicate
a low kinetic energy barrier for H atom adsorption on the TMP surface which guarantees the excellent catalytic activity of the catalyst.
The excellent electrocatalytic activity makes the present 3D structured TMP electrocatalysts promising catalysts for large scale highly
pure hydrogen evolution by electrochemical water splitting.
Biography
Shijian Chen is a Professor at Chongqing University. His research areas are wide-band-gap semiconductor based materials and devices; new energy materials and
material design from the first-principles computational. His current research specifically focuses on new materials for production of hydrogen fuel from water. He has
done his Post-doctoral Fellowship from Monash University from 2008 to 2012, and as an Alexander von Humboldt Research Fellow at University of Hannover from
2007-2008. He is the author of over 50 peer-reviewed publications with more than 1000 citations. He received his PhD from Chinese Academy of Sciences in 2006.
sjchenchen@cqu.edu.cnShijian Chen et al., J Phys Chem Biophys 2017, 7:2(Suppl)
DOI: 10.4172/2161-0398-C1-019