期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 538, 期 -, 页码 297-307出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2018.11.108
关键词
Battery supercapacitor hybrid device; Nickel aluminum oxide; Nickel manganese oxide; Nickel molybdenum oxide; Nickel tungsten oxide
资金
- Ministry of Science and Technology (MOST) in Taiwan [MOST 106-2221-E-027-108, MOST 106-2119-M-027-001]
- MOST in Taiwan [MOST 107-2636-E-027-003]
- Research Center of Energy Conservation for New Generation of Residential, Commercial, and Industrial Sectors from The Featured Areas Research Center Program of the Ministry of Education (MOE) in Taiwan
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/cm(2) corresponding to the capacity of 4.54 mAh/cm(2) at 5 mA/cm(2) 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/cm(2) corresponding to the capacity of 1.45 mAh/cm(2) at 5 mA/cm(2), the maximum energy density of4.60 Wh/kg at the power density of 0.21 kW/kg, and the CF retention of 90% after 6000 times charging/discharging process. (C) 2018 Elsevier Inc. All rights reserved.
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