Boosting energy storage and electrocatalytic performances by synergizing CoMoO4@MoZn22 core-shell structures

Liu, Hengqi; Zhao, Depeng; Liu, Ying; Hu, Pengfei; Wu, Xiang; Xia, Hui

doi:10.1016/j.cej.2019.05.066

Cited by 158 publications

(39 citation statements)

References 52 publications

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“…Therefore, some researchers tried to dope with metal elements to form ternary transition metal oxides/hydroxides to alleviate the problem of poor conductivity . Previous studies have shown that the introduction of Mo could enhance charge transfer because of its high conductivity . In addition, combining transition metal oxides/hydroxides with sulfides to form composites was also considered as an effective method .…”

Section: Introductionmentioning

confidence: 99%

“…27 Previous studies have shown that the introduction of Mo could enhance charge transfer because of its high conductivity. [28][29][30] In addition, combining transition metal oxides/ hydroxides with sulfides to form composites was also considered as an effective method. 5,31,32 It was believed that the sulfides had superior electrical conductivity and the synergistic effects between oxides/hydroxides and sulfides could lead to more Faradic redox reactions.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of porous flower‐like Ni‐Co‐Mo‐S nanostructures on Ni foam for battery‐supercapacitor hybrid devices

et al. 2020

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The synergistic effects of multiple components and unique nanostructures were contributed to prepare the high‐performance battery‐type electrode materials. In this work, Mo element was introduced to form the ternary transition metal oxides/hydroxides of Ni‐Co to improve conductivity, and then charge transfer was accelerated to enhance the capacity storage. After sulfidation, the electrical conductivity was further improved, and a porous flower‐like nanostructure was formed. Except for that, the composites of transition metal oxides/hydroxides and sulfides were formed via sulfidation. With the help of the synergistic effects of multiple components and a porous flower‐like nanostructure, more Faradic redox reactions occurred. Therefore, the as‐prepared porous flower‐like Ni‐Co‐Mo‐S nanostructures on Ni foam exhibited an excellent areal capacitance of 7.22 C·cm−2 at 5 mA·cm−2 and long‐cycle stability (96.9% retention after 5000 cycles). Furthermore, a coin‐type battery‐supercapacitor hybrid (BSH) device was assembled, which achieved 54.54 Wh·kg−1 at 540 W·kg−1 and displayed 74.8% capacitance retention after 3500 cycles. All mentioned above demonstrated that ternary transition metal oxides/hydroxides precursors via sulfidation can form special structures and the composites of transition metal oxides/hydroxides and sulfides to prepare high‐performance battery‐type electrodes for energy storage.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of porous flower‐like Ni‐Co‐Mo‐S nanostructures on Ni foam for battery‐supercapacitor hybrid devices

et al. 2020

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“…Mainly, nowadays the researchers are having a great interest in green approach especially using the biowaste to prepare graphene or graphene composites to bulk production for energy storage devices or electrochemical applications. In recent literatures different type of hybrid material as an electrode for supercapacitors has been reported such as, porous carbon nanoparticles from bio-waste materials [22], Chemical Properties of Green Synthesized Porous Carbon Nanoparticles [23], Highly ordered mesoporous carbons materials [24], Emerging CoMn-LDH @ MnO 2 electrode materials [25], MCo 2 O 4 @MCo 2 S 4 @PPy (M = Ni, Zn) sandwich structure for energy storage materials [26], CoMoO 4 @MoZn 22 core-shell structures [27], polypyrrole (PPy) modified MoS 2 /Ni 3 S 2 (MNS@PPy) as a promising electrode material for supercapacitor applications [28].…”

Section: Introductionmentioning

confidence: 99%

Eco-friendly approach in supercapacitor application: CuZnCdO nanosphere decorated in reduced graphene oxide nanosheets

Pratheepa

Lawrence

2020

SN Appl. Sci.

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The novel material CuZnCdO metal nanoparticles have been synthesized with different concentrations through green synthesis using fresh A. heterophyllus leaf extract as a reducing agent and graphene oxide derived from A. heterophyllus dead leaves. XRD, FESEM, EDAX, FTIR and FT-RAMAN analysis confirms the structural properties of rGO/CuZnCdO nanoparticles. BET has been used to investigate the surface area of the nanoparticles. It is a very challenging material that shows the highest specific capacitance of 882.5 F/g with non-hazardous and eco-friendly. Without any decay, the charge carrier concentration has performed up to 5000 cycles which indicates the material has good stability. The energy density and power density has been calculated by Ragone plot. This illustrates that the material has high capacitive behavior.

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“…Transition metal oxides have been extensively studied due to their excellent electrocatalytic properties, such as MCo 2 O 4 (Zhao et al, 2019a), NiFeO x , CoMoO 4 (Liu H. Q. et al, 2019), NiCo 2 O 4 (Zhao et al, 2019b), Co 3 O 4 (Tan et al, 2019). Among them, Co 3 O 4 is a representative example owning to its earth-abundance, durability and high efficiency (Xu et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Hybrid Co3O4@Co9S8 Electrocatalysts for Oxygen Evolution Reaction

et al. 2019

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It is very essential to design an efficient and low-cost electrocatalyst for oxygen evolution reaction (OER). In this work, we report synthesis of Co 3 O 4 @Co 9 S 8 heterostructures (Co-HSs) by employing Co 3 O 4 nanowires (Co-NWs) as the precursor on nickel foam though a facile hydrothermal method. The unique structures can combine the advantages of one-dimensional nanowires and two-dimensional nanosheets, simultaneously, which possess plentiful defect atoms and active sites. The as-prepared Co-HSs exhibit excellent electrocatalytic performance for OER, which present a low overpotential of 80 mV at 10 mA cm −2 during OER process and small Tafel slope of 107.2 mV dec −1 .

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Boosting energy storage and electrocatalytic performances by synergizing CoMoO4@MoZn22 core-shell structures

Cited by 158 publications

References 52 publications

Synthesis of porous flower‐like Ni‐Co‐Mo‐S nanostructures on Ni foam for battery‐supercapacitor hybrid devices

Synthesis of porous flower‐like Ni‐Co‐Mo‐S nanostructures on Ni foam for battery‐supercapacitor hybrid devices

Eco-friendly approach in supercapacitor application: CuZnCdO nanosphere decorated in reduced graphene oxide nanosheets

Hybrid Co3O4@Co9S8 Electrocatalysts for Oxygen Evolution Reaction

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