The Ni foam can act as the nickel ion source and the current collector for synthesizing Ni-based compounds using the hydrothermal synthesis especially in the acid condition. Using Ni foam as the Ni²⁺ source can grow materials on the substrate directly and uniformly since nickel ions are released from substrate thoroughly. Nickel-based bimetallic oxides are intensively investigated as battery-type materials for battery supercapacitor hybrid devices (BSHD) because of high electrical conductivities and abundant transition states for inducing multiple redox reactions. In this study, Mo, Mn, Al, and W precursors are simply added in Ni precursor-free acid solution for hydrothermal synthesis using Ni foam as the nickel ion source and the current collector to synthesize Ni-based bimetallic oxide electrodes for BSHD. The morphology of nickel-based bimetallic oxide prepared with and without incorporating the structure-directing agent is also carefully discussed. The highest specific capacitance (C_F) of 1.80 F/cm² corresponding to the capacity of 4.54 mAh/cm² at 5 mA/cm² is attained for the nickel molybdenum oxide (Ni-Mo oxide) electrode. The Ni-Mo oxide-based BSHD shows a potential window of 1.8 V, a C_F value of 223.53 mF/cm² corresponding to the capacity of 1.45 mAh/cm² at 5 mA/cm², the maximum energy density of 4.60 Wh/kg at the power density of 0.21 kW/kg, and the C_F retention of 90% after 6000 times charging/discharging process.

镍泡沫可以用作镍离子源和集电器，特别是在酸性条件下使用水热合成法合成镍基化合物。使用泡沫镍作为Ni ²⁺由于镍离子会从基材上彻底释放出来，因此离子源可以直接，均匀地在基材上生长材料。镍基双金属氧化物作为电池类型的电池超级电容器混合设备（BSHD）的材料得到了广泛的研究，因为它具有较高的电导率和丰富的过渡态，可以引发多个氧化还原反应。在这项研究中，将Mo，Mn，Al和W前驱体简单地添加到Ni前驱体游离酸溶液中，使用Ni泡沫作为镍离子源和集电器，进行水热合成，以合成用于BSHD的Ni基双金属氧化物电极。还仔细讨论了使用和不使用结构定向剂制备的镍基双金属氧化物的形态。最高比电容（C _F）为1.80 F / cm²对应于4.54毫安/平方厘米的容量²以5mA厘米/ ²达到了镍氧化钼（Ni-Mo系氧化物）电极。在Ni-Mo系的氧化物系BSHD节目1.8 V的电位窗口，一个C _˚F的223.53 MF /厘米值²对应于1.45毫安/平方厘米的容量²在5毫安/平方厘米²，4.60瓦的最大能量密度/ kg，功率密度为0.21 kW / kg，经过6000次充电/放电过程后的C _F保持率为90％。