Hydrothermal process fabrication of NiO–NiCoO2–Co3O4 composites used as supercapacitor materials

Wang, X.W.; Wang, X. E.; Liu, Y. P.; Kong, Yang; Sun, Li; Hu, Yidan

doi:10.1007/s10854-017-7364-x

Cited by 11 publications

(2 citation statements)

References 44 publications

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“…Figure S9: GCD curves at a current density of 0.3 to 1 A g S3: Capacitance of diamond-based electrodes for supercapacitors. References [35,[43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61] are cited in the Supplementary Materials.…”

Section: Data Availability Statementmentioning

confidence: 99%

“…Figure S10: Ragone plot of energy density and power density of CoNiO 2 /Co 3 O 4 /BDD and other electrodes obtained from the literature; Table S1: Electrochemical property parameters of Co 3 O 4 and CoNi-based electrodes for supercapacitors; Table S2: Co/Ni ratio from EDS data; Table S3: Capacitance of diamond-based electrodes for supercapacitors. References [ 35 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 ] are cited in the Supplementary Materials .…”

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CoNiO2/Co3O4 Nanosheets on Boron Doped Diamond for Supercapacitor Electrodes

Cui,

Wang,

Geng

et al. 2024

Nanomaterials

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Developing novel supercapacitor electrodes with high energy density and good cycle stability has aroused great interest. Herein, the vertically aligned CoNiO2/Co3O4 nanosheet arrays anchored on boron doped diamond (BDD) films are designed and fabricated by a simple one-step electrodeposition method. The CoNiO2/Co3O4/BDD electrode possesses a large specific capacitance (214 mF cm−2) and a long-term capacitance retention (85.9% after 10,000 cycles), which is attributed to the unique two-dimensional nanosheet architecture, high conductivity of CoNiO2/Co3O4 and the wide potential window of diamond. Nanosheet materials with an ultrathin thickness can decrease the diffusion length of ions, increase the contact area with electrolyte, as well as improve active material utilization, which leads to an enhanced electrochemical performance. Additionally, CoNiO2/Co3O4/BDD is fabricated as the positive electrode with activated carbon as the negative electrode, this assembled asymmetric supercapacitor exhibits an energy density of 7.5 W h kg−1 at a power density of 330.5 W kg−1 and capacity retention rate of 97.4% after 10,000 cycles in 6 M KOH. This work would provide insights into the design of advanced electrode materials for high-performance supercapacitors.

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