Ultrasonication-assisted ultrafast preparation of multiwalled carbon nanotubes/Au/Co3O4 tubular hybrids as superior anode materials for oxygen evolution reaction

Fang, Yiyun; Li, Xinzhe; Hu, Yiping; Li, Feng; Lin, Xiaoqing; Tian, Min; An, Xia; Fu, Yan; Jin, Jun; Ma, Jiantai

doi:10.1016/j.jpowsour.2015.09.049

Cited by 63 publications

(26 citation statements)

References 58 publications

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“…With respect to the low cost, earth-abundant transition-metal oxides/hydroxides [8][9][10], especially Co-based complexes with different structures and dimensions [11][12][13][14][15][16], are explored as promising alternative catalysts for OER and ORR. However, the strong causticity in alkaline solution and intrinsic low conductivities of many Co-based catalysts hamper their further applications [17].…”

Section: Introductionmentioning

confidence: 99%

Self-assembly of cobalt-centered metal organic framework and multiwalled carbon nanotubes hybrids as a highly active and corrosion-resistant bifunctional oxygen catalyst

Fang

et al. 2016

Journal of Power Sources

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Metal organic frameworks (MOF) derived carbonaceous materials have emerged as promising bifunctional oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) catalysts for electrochemical energy conversion and storage. But previous attempts to overcome the poor electrical conductivity of MOFs hybrids involve a harsh high-template pyrolytic process to in situ form carbon, which suffer from extremely complex operation and inevitable carbon corrosion at high positive potentials when OER is operated. Herein, a self-assembly approach is presented to synthesize a non-precious metal-based, high active and strong durable Co-MOF@CNTs bifunctional catalyst for OER and ORR. CNTs not only improve the transportation of the electrons but also can sustain the harsh oxidative environment of

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Section: Introductionmentioning

confidence: 99%

Self-assembly of cobalt-centered metal organic framework and multiwalled carbon nanotubes hybrids as a highly active and corrosion-resistant bifunctional oxygen catalyst

Fang

et al. 2016

Journal of Power Sources

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123

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“…The regional Co 2p spectrum revealed a high-energy band at 795.7 eV (Co 2p 1/2 ) and a low-energy band at 780.4 eV (Co 2p 3/2 ). These findings indicate the formation of Co 3 O 4 on CNTs [ 28 ], as shown in figure 3 c .…”

Section: Resultsmentioning

confidence: 63%

Three-dimensional Co₃O₄@MWNTs nanocomposite with enhanced electrochemical performance for nonenzymatic glucose biosensors and biofuel cells

et al. 2017

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Three-dimensional nanoarchitectures of Co3O4@multi-walled carbon nanotubes (Co3O4@MWNTs) were synthesized via a one-step process with hydrothermal growth of Co3O4 nanoparticles onto MWNTs. The structure and morphology of the Co3O4@MWNTs were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, Brunauer–Emmett–Teller, scanning electron microscopy and transmission electron microscopy. The electrocatalytic mechanism of the Co3O4@MWNTs was studied by X-ray photoelectron spectroscopy and cyclic voltammetry. Co3O4@MWNTs exhibited high electrocatalytic activity towards glucose oxidation in alkaline medium and could be used in nonenzymatic electrochemical devices for glucose oxidation. The open circuit voltage of the nonenzymatic glucose/O2 fuel cell was 0.68 V, with a maximum power density of 0.22 mW cm−2 at 0.30 V. The excellent electrochemical properties, low cost, and facile preparation of Co3O4@MWNTs demonstrate the potential of strongly coupled oxide/nanocarbon hybrid as effective electrocatalyst in glucose fuel cells and biosensors.

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“…Moreover, the best deconvolution of the Co 2p profile was achieved with the assumption of seven species, including two pairs of spin‐orbit doublets (indicating the coexistence of Co 2+ and Co 3+ ) and their three shakeup satellites (denoted as “sat”) . These findings indicate the formation of Co 3 O 4 on NPC .…”

Section: Resultsmentioning

confidence: 99%

Applying Co₃O₄@nanoporous Carbon to Nonenzymatic Glucose Biofuel Cell and Biosensor

Jiao

Kang

Wang³

et al. 2018

Electroanalysis

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A novel hierarchically nanoporous carbon (NPC) derived from Al‐based porous coordination polymer is prepared by two‐step carbonization method for immobilization of the Co3O4 in the application of the nonenzymatic biofuel cells and biosensors. The structure and morphology are characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), high‐resolution transmission electron microscopy (HRTEM), and X‐ray diffraction (XRD). Brunauer‐Emmett‐Teller (BET) is to characterize the porous nature of the NPC, and X‐ray photoelectron spectroscopy (XPS) is to characterize the composition of Co3O4@nanoporous carbon (Co3O4@NPC). Without collapse in the high carbonization temperature (above 1600 °C), the NPC maintains the nanoporous structure and high specific surface area of 1551.2 m2 g−1. In addition, the NPC is composited with Co3O4 by hydrothermal method to form the Co3O4@NPC. When tested as the nonenzymatic electrocatalyst for glucose oxidation reaction (GOR), the Co3O4@NPC exhibits higher response to glucose, in which the current shifts up by 64 %, than pure Co3O4 in 0.1 M KOH. The limit of detection is 0.005 mM (S/N=3) and response time is within 3 s. The detection range can be divided into two sections of 0.02–1.4 mM and 1.4–10.7 mM with the sensitivity of 249.1 μA mM−1 cm−2 and 66.6 μA mM−1 cm−2, respectively. A glucose fuel cell is constructed with the Co3O4@NPC as the anode and Pt/C catalyst as the cathode. The open‐circuit potential of the nonenzymatic glucose/O2 fuel cell was 0.68 V, with a maximum power density of 0.52 mW cm−2 at 0.27 V. This work may contribute to exploring other nanoporous carbons for application in glucose fuel cells and biosensors.

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Ultrasonication-assisted ultrafast preparation of multiwalled carbon nanotubes/Au/Co3O4 tubular hybrids as superior anode materials for oxygen evolution reaction

Cited by 63 publications

References 58 publications

Self-assembly of cobalt-centered metal organic framework and multiwalled carbon nanotubes hybrids as a highly active and corrosion-resistant bifunctional oxygen catalyst

Self-assembly of cobalt-centered metal organic framework and multiwalled carbon nanotubes hybrids as a highly active and corrosion-resistant bifunctional oxygen catalyst

Three-dimensional Co₃O₄@MWNTs nanocomposite with enhanced electrochemical performance for nonenzymatic glucose biosensors and biofuel cells

Applying Co₃O₄@nanoporous Carbon to Nonenzymatic Glucose Biofuel Cell and Biosensor

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Ultrasonication-assisted ultrafast preparation of multiwalled carbon nanotubes/Au/Co3O4 tubular hybrids as superior anode materials for oxygen evolution reaction

Cited by 63 publications

References 58 publications

Self-assembly of cobalt-centered metal organic framework and multiwalled carbon nanotubes hybrids as a highly active and corrosion-resistant bifunctional oxygen catalyst

Self-assembly of cobalt-centered metal organic framework and multiwalled carbon nanotubes hybrids as a highly active and corrosion-resistant bifunctional oxygen catalyst

Three-dimensional Co3O4@MWNTs nanocomposite with enhanced electrochemical performance for nonenzymatic glucose biosensors and biofuel cells

Applying Co3O4@nanoporous Carbon to Nonenzymatic Glucose Biofuel Cell and Biosensor

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Three-dimensional Co₃O₄@MWNTs nanocomposite with enhanced electrochemical performance for nonenzymatic glucose biosensors and biofuel cells

Applying Co₃O₄@nanoporous Carbon to Nonenzymatic Glucose Biofuel Cell and Biosensor