Lang Gan, Langtao Hu, Hao An, Jing Fang*, Yanqing Lai, Jie Li. Sequential Engineering of Ternary CuFeNi with a Vertically Layered Structure for Efficient and Bifunctional Catalysis of the Oxygen and Hydrogen Evolution Reactions. ACS Applied Materials & Interfaces, 2018, 10: 41465–41470