Tuning complex transition metal hydroxide nanostructures as active catalysts for water oxidation by a laser-chemical route.
Diverse transition metal hydroxide nanostructures were synthesized by laser-induced hydrolysis in a liquid precursor solution for alkaline oxygen evolution reaction (OER). Several active OER catalysts with fine control of composition, structure, and valence state were obtained including (Lix)[Ni0.66Mn0.34(OH)2](NO3)(CO3) · mH2O, Lix[Ni0.67Co0.33(OH)2](NO3)0.25(ORO)0.35 · mH2O, etc. An operate overpotential less than 0.34 V at current density of 10 mA cm(-2) was achieved. Such a controllable laser-chemical route for assessing complex nanostructures in liquids opens many opportunities to design novel functional materials for advanced applications.
Kai-Yang
KY
Niu
Feng
F
Lin
⊥Joint Center for Artificial Photosynthesis, California Institute of Technology, Pasadena, California 91125, United States.
Suho
S
Jung
¶State Key Laboratory of Mechanical Transmission, College of Physics, Chongqing University, Chongqing 400044, People's Republic of China.
Liang
L
Fang
∥Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States.
Dennis
D
Nordlund
⊥Joint Center for Artificial Photosynthesis, California Institute of Technology, Pasadena, California 91125, United States.
Charles C L
CC
McCrory
∥Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States.
Tsu-Chien
TC
Weng
Peter
P
Ercius
Marca M
MM
Doeff
#Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States.
Haimei
H
Zheng
Transition metal hydroxides; electrocatalysis; laser chemistry; three-dimensional catalyst; volume activity; water oxidation