TY  - SER
AU  - liu, Zhao-Qing
AU  - Xu, Qi-Zhi
TI  - Facile Hydrothermal Synthesis of Urchin-like Nico2o4 Spheres as Efficient Electrocatalysts  for  Oxygen Reduction Reaction
KW  - Oxygen Reduction Reaction
KW  - Nico2o4
KW  - Spheres
ER  -