SnO2@Co3O4 hollow nano-spheres for a Li-ion battery anode with extraordinary performance

Kim, Won Sik; Hwa, Yoon; Kim, Hong Chan; Choi, Jong Hyun; Sohn, Hun‐Joon; Hong, Seong Hyeon

doi:10.1007/s12274-014-0475-2

Cited by 124 publications

(47 citation statements)

References 44 publications

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“…Many architectures of these nanocomposites have been fabricated using carbonaceous or GO such as Co 2 SnO 4 /activated carbon for supercapacitors electrode application . SnO 2 /GO coated with Co 3 O 4 nanospheres applied in the lithium‐ion battery, SnO 2 ‐Co 3 O 4 /rGO used in producing supercapacitors electrode materials. Weimin et al fabricated CoNi 2 S 4 /graphene nanocomposites with a specific capacitance of 2009.1 F g −1 with a current density of 1.0 A g −1 that was sustained to 755.4 F g −1 using a current density of 4.0 A g −1 after 2000 charge and discharge cycle.…”

Section: Introductionmentioning

confidence: 99%

Conjugated NiO‐ZnO/GO nanocomposite powder for applications in supercapacitor electrodes material

et al. 2020

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Summary The nanocomposite of NiO‐ZnO/graphene oxide (GO) was synthesized for applications in supercapacitor electrodes material. GO was produced using the modified Hummers' method, and the nanocomposite of NiO‐ZnO/GO was synthesized using the co‐precipitation method. Thin films of nanocomposite powder were deposited on quartzite (glass) and fluorine‐doped tin oxide substrates by a drop casting technique. X‐ray diffraction revealed the crystallographic information of NiO‐ZnO/GO nanocomposites. The surface morphology and elemental composition were studied using a scanning electron microscopy and energy‐dispersive X‐ray spectroscopy, respectively. The electrochemical properties were examined using cyclic voltammetry in a 1.0 M solution of Na2SO4 electrolyte with a three‐electrode system. Moreover, the NiO‐ZnO/GO binary metal oxides nanocomposite based electrodes fabricated for supercapacitor delivered a high specific capacitance of 1690 F g−1 for 1:1/GO sample at a scan rate of 10 mV s−1 and has excellent conductivity due to reduced band gap energy range of 1.52‐1.79 eV and with electrodes resistance of 0.02 Ω. The absence of semicircle in the Nyquist plot denotes low charge transfer resistance of the electrodes. The highest energy densities obtained for 1:1/GO and 2:1/GO are 192 and 148 Wh kg−1, respectively, while the highest power density obtained for 1:1/GO and 2:1/GO are 8.46 and 7.42 W kg−1, respectively. Our study paves way for a facile, affordable, nontoxic, and fast way to synthesis binary transition metal oxides/GO‐based electrodes material for high‐performance supercapacitor.

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Section: Introductionmentioning

confidence: 99%

Conjugated NiO‐ZnO/GO nanocomposite powder for applications in supercapacitor electrodes material

et al. 2020

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“…Growing energy demands have stimulated intensive research of alternative energy production and storage systems with high efficiency, low cost, and environment benignity [1][2][3][4][5][6][7][8][9][10]. Hydrogen production from water splitting can play a pivotal role in overcoming the challenges of increasing energy demands [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Bifunctional catalysts of Co3O4@GCN tubular nanostructured (TNS) hybrids for oxygen and hydrogen evolution reactions

Tahir

Mahmood

Zhang³

et al. 2015

Nano Res.

128

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Catalysts for oxygen and hydrogen evolution reactions (OER/HER) are at the heart of renewable green energy sources such as water splitting. Although incredible efforts have been made to develop efficient catalysts for OER and HER, great challenges still remain in the development of bifunctional catalysts. Here, we report a novel hybrid of Co 3 O 4 embedded in tubular nanostructures of graphitic carbon nitride (GCN) and synthesized through a facile, large-scale chemical method at low temperature. Strong synergistic effects between Co 3 O 4 and GCN resulted in excellent performance as a bifunctional catalyst for OER and HER. The high surface area, unique tubular nanostructure, and composition of the hybrid made all redox sites easily available for catalysis and provided faster ionic and electronic conduction. The Co 3 O 4 @GCN tubular nanostructured (TNS) hybrid exhibited the lowest overpotential (0.12 V) and excellent current density (147 mA/cm 2 ) in OER, better than benchmarks IrO 2 and RuO 2 , and with superior durability in alkaline media. Furthermore, the Co 3 O 4 @GCN TNS hybrid demonstrated excellent performance in HER, with a much lower onset and overpotential, and a stable current density. It is expected that the Co 3 O 4 @GCN TNS hybrid developed in this study will be an attractive alternative to noble metals catalysts in large scale water splitting and fuel cells.

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“…Furthermore, the nanosized M catalyzes the decomposition of Li 2 O because the reversion of M/Li 2 O to MO requires the override of a much lower energy barrier than that of Sn/Li 2 O to SnO 2 (Note S1, Supporting Information), resulting in an enhanced reversibility of conversion reactions in the SnO 2 ‐M hybrids. It has been reported that, in some SnO 2 ‐transition metal oxides (such as MoO 3 and Co 3 O 4 ) nanostructural hybrids, the catalytic effect of the transition metal nanoparticles can promote the conversion reaction of Sn to SnO 2 . Thus, the ternary SnO 2 ‐M‐graphite composites show excellent electrochemical performances, in terms of high ICE, long cycle life, and highly stable reversibility.…”

mentioning

confidence: 99%

Stabilizing the Nanostructure of SnO₂ Anodes by Transition Metals: A Route to Achieve High Initial Coulombic Efficiency and Stable Capacities for Lithium Storage

et al. 2017

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To dramatically stabilize the nanostructure of Sn and achieve ultrahigh reversibility of conversion reactions in lithiated SnO , a series of SnO -transition metal-graphite ternary nanocomposites are produced by ball milling, demonstrating high initial Coulombic efficiencies up to 88.6%, high reversible capacity (>700 mAh g at 2 A g ), and ultralong cycling life (90.3% of capacity retention after 1300 cycles).

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SnO2@Co3O4 hollow nano-spheres for a Li-ion battery anode with extraordinary performance

Cited by 124 publications

References 44 publications

Conjugated NiO‐ZnO/GO nanocomposite powder for applications in supercapacitor electrodes material

Conjugated NiO‐ZnO/GO nanocomposite powder for applications in supercapacitor electrodes material

Bifunctional catalysts of Co3O4@GCN tubular nanostructured (TNS) hybrids for oxygen and hydrogen evolution reactions

Stabilizing the Nanostructure of SnO₂ Anodes by Transition Metals: A Route to Achieve High Initial Coulombic Efficiency and Stable Capacities for Lithium Storage

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SnO2@Co3O4 hollow nano-spheres for a Li-ion battery anode with extraordinary performance

Cited by 124 publications

References 44 publications

Conjugated NiO‐ZnO/GO nanocomposite powder for applications in supercapacitor electrodes material

Conjugated NiO‐ZnO/GO nanocomposite powder for applications in supercapacitor electrodes material

Bifunctional catalysts of Co3O4@GCN tubular nanostructured (TNS) hybrids for oxygen and hydrogen evolution reactions

Stabilizing the Nanostructure of SnO2 Anodes by Transition Metals: A Route to Achieve High Initial Coulombic Efficiency and Stable Capacities for Lithium Storage

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Stabilizing the Nanostructure of SnO₂ Anodes by Transition Metals: A Route to Achieve High Initial Coulombic Efficiency and Stable Capacities for Lithium Storage