Fabrication of bimetallic oxides (MCo2O4: M=Cu, Mn) on ordered microchannel electro-conductive plate for high-performance hybrid supercapacitors

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Mai Li
  • Zheyi Meng
  • Ruichao Feng
  • Kailan Zhu
  • Fengfeng Zhao
  • Chunrui Wang
  • Jiale Wang
  • Lianwei Wang

Detail(s)

Original languageEnglish
Article number9896
Journal / PublicationSustainability (Switzerland)
Volume13
Issue number17
Online published3 Sep 2021
Publication statusPublished - Sep 2021

Link(s)

Abstract

AB2O4-type binary-transition metal oxides (BTMOs) of CuCo2O4 and MnCo2O4 were successfully prepared on ordered macroporous electrode plates (OMEP) for supercapacitors. Under the current density of 5 mA cm−2, the CuCo2O4/OMEP electrode achieved a specific capacitance of 1199 F g−1. The asymmetric supercapacitor device prepared using CuCo2O4/OMEP as the positive electrode and carbon-based materials as the negative electrode (CuCo2O4/OMEP//AC) achieved the power density of 14.58 kW kg−1 under the energy density of 11.7 Wh kg−1. After 10,000 GCD cycles, the loss capacitance of CuCo2O4/OMEP//AC is only 7.5% (the retention is 92.5%). The MnCo2O4/OMEP electrode shows the specific and area capacitance of 843 F g−1 and 5.39 F cm−2 at 5 mA cm−2. The MnCo2O4/OMEP-based supercapacitor device (MnCo2O4/OMEP//AC) has a power density of 8.33 kW kg−1 under the energy density of 11.6 Wh kg−1 and the cycle stability was 90.2% after 10,000 cycles. The excellent power density and cycle stability prove that the prepared hybrid supercapacitor fabricated under silicon process has a good prospect as the power buffer device for solar cells.

Research Area(s)

  • Bimetallic oxide, Electrochemical, Ordered macropore structure, Power buffer, Silicon micromachining, Supercapacitor

Citation Format(s)

Fabrication of bimetallic oxides (MCo2O4: M=Cu, Mn) on ordered microchannel electro-conductive plate for high-performance hybrid supercapacitors. / Li, Mai; Meng, Zheyi; Feng, Ruichao; Zhu, Kailan; Zhao, Fengfeng; Wang, Chunrui; Wang, Jiale; Wang, Lianwei; Chu, Paul K.

In: Sustainability (Switzerland), Vol. 13, No. 17, 9896, 09.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review