A high-performance hybrid supercapacitor with NiO derived NiO@Ni-MOF composite electrodes

Xiong, Shanshan; Jiang, Shuyao; Wang, Juan; Lin, Hongjun; Lin, Mengxian; Weng, Shuting; Liu, Shuai; Yang, Jing; Xu, Yanchao; Chen, Jianrong

doi:10.1016/j.electacta.2020.135956

Cited by 197 publications

(75 citation statements)

References 62 publications

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“…26 S. S. Xiong et al just used the MOF structure to obtain good results according to this principle. 27 For instance, a granular MnO 2 /graphene composite was obtained via the electrochemical deposition. The specic capacitance of the best performing composite is 378 F g À1 at a scan rate of 1 mV s À1 .…”

Section: Introductionmentioning

confidence: 99%

Effects of electrodeposition time on a manganese dioxide supercapacitor

Dai

Zhang

et al. 2020

RSC Adv.

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As is well known that the specific capacitance of supercapacitors cannot be improved by increasing the mass of the deposited MnO 2 films, which means an appropriate deposition duration is important. In this study, nanobelt-structured MnO 2 films were prepared by the electrochemical deposition method under different deposition time to explore the effects of electrodeposition time change on the microstructure and electrochemical properties of this material. Benefiting from the microstructure of the MnO 2 films, the transfer properties of the charged electrons and ions were promoted. Meanwhile, a 3D porous nickel foam was chosen as the deposition substrate, which rendered an enhancement of the MnO 2 conductivity and the mass of the active material. The enhanced specific capacitance and specific surface area attributed to synergistic reactions. Subsequently, the electrochemical performances of the asprepared materials were analyzed via cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) and electrochemical impedance spectroscopy (EIS) tests. Results show that the optimum sample deposited for 50 s has a specific capacitance of 291.9 F g À1 at the current density of 1 A g À1 and lowest R ct . However, its electrochemical stability cannot come up to the level of the 300 s sample due to the microstructure change.

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Section: Introductionmentioning

confidence: 99%

Effects of electrodeposition time on a manganese dioxide supercapacitor

Dai

Zhang

et al. 2020

RSC Adv.

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“… 10 , 15 Generally, NiO, SnO, MnO 2 , RuO 2 , V 2 O 5 , and Co 3 O 4 and their composites are used as electrode materials. 11 , 12 So far, RuO 2 has been reported as the best electrode material that can provide good performances due to its excellent theoretical specific capacity (1400–2000 F/g). Nevertheless, the high cost of production and the effects of agglomeration stand as high barriers for marketable use.…”

Section: Introductionmentioning

confidence: 99%

Quaternary Cu₂FeSnS₄/PVP/rGO Composite for Supercapacitor Applications

et al. 2021

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Electrochemical energy storage is a current research area to address energy challenges of the modern world. The Cu 2 FeSnS 4 /PVP/rGO-decorated nanocomposite using PVP as the surface ligand was explored in a simple one-step solvothermal route, for studying their electrochemical behavior by designing asymmetric hybrid supercapacitor devices. The full cell three-electrode arrangements delivered 748 C/g (62.36 mA h/g) at 5 mV/s employing CV and 328 F/g (45.55 mA h/g) at 0.5 A/g employing GCD for the Cu 2 FeSnS 4 /PVP/rGO electrode. The half-cell two-electrode device can endow with 73 W h/kg and 749 W/kg at 1 A/g energy and power density. Furthermore, two Cu 2 FeSnS 4 /PVP/rGO//AC asymmetric devices connected in series for illuminating a commercial red LED more than 1 min were explored. This work focuses the potential use of transition-metal chalcogenide composite and introduces a new material for designing high-performance supercapacitor applications.

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“…The CoNi 2 S 4 / Ni 3 S 2 nanowires//AC supercapacitors deliver a maximum energy density of 0.4 mW h cm À3 at a power density of 3.99 mW cm À3 , which is comparable to previously reported ASC devices. [31][32][33][34] The long-term cycling stability of the CoNi 2 S 4 /Ni 3 S 2 nanowires//AC device is also evaluated by repeating charge-discharge measurements, as shown in Fig. 5f.…”

Section: Resultsmentioning

confidence: 99%