Highly exposed nickel cobalt sulfide–rGO nanoporous structures: an advanced energy-storage electrode material

Annamalai, K. P.; Liu, Lile; Tao, Yousheng

doi:10.1039/c7ta01735a

Cited by 58 publications

(19 citation statements)

References 71 publications

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Section: Supercapacitormentioning

confidence: 99%

“…The detailed electrochemical data are provided in Table . Annamalai et al designed a facile synthesis method to obtain NiCo 2 S 4 grown on rGO nanosheets; from the SEM image (Figure e), a vast porous structure can be clearly seen. In a standard three‐electrode system test, the NiCo 2 S 4 @rGO can achieve 1081 F g −1 at a high current density of 40 A g −1 (Figure g).…”

Section: Supercapacitormentioning

confidence: 99%

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Transition Metal Sulfides Based on Graphene for Electrochemical Energy Storage

Geng

Zheng

Tang

et al. 2018

Advanced Energy Materials

751

281

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factors: electrode materials, electrolytes, and separators. [18] Finding suitable electrode materials to promote and realize their commercialization is still considered one of the major challenges. [19][20][21] Up to now, electrode materials have commonly included carbon materials (CMs), [5,13,22] conducting polymer materials (CPMs), [23] transition metal oxides (TMOs), [24] and others. [25][26][27] However, they all have their respective shortcomings; for instance, CMs tend to restack and then decrease the specific surface area, which is an important index for CM performance. [28][29][30] CPMs show the same phenomenon that the original structure will collapse under long-term charge/discharge process. [23] Although the above two types of electrode materials have good electron conductivity, their changing specific surface area and structures during use make them unlikely to be promising electrode materials. TMOs always have a good reversible faradic reaction due to their valence flexibility. However, in comparison to CMs, their poor electron conductivity may lower their specific capacity. [31][32][33] Transition metal sulfides (TMSs) have attracted tremendous attention due to their high specific capacity. For example, nickel and cobalt sulfides (e.g., NiS x , CoS x ) have specific capacities that are double of their oxide counterparts (e.g., NiO x , CoO x ). [22,[34][35][36] This is because the replacement of oxygen with sulfur, an element with a lower electronegativity, increases the performance compared to TMOs. [37,38] However, their unyielding volume change during the cycling process has hindered their further development and application in lithium and sodium rechargeable batteries. [39] Though TMSs possess high specific capacities and excellent rate capabilities when used for SCs, it is difficult to achieve all these objectives simultaneously from a single material. Therefore, the hybridization of different materials with different properties is becoming an interesting research area. Recent papers have testified that the adulteration of graphene or graphene derivatives can solve these issues and increase the electrochemical performance of energy storage devices. [40][41][42] It can be attributed to the properties of graphene: 2D conductive networks, a large specific surface area, and good physicochemical stability. In addition to these properties, their porous structure can effectively promote the diffusion of electrolyte ions. Therefore, 2D graphene is one of the ideal support framework materials to prepare TMS@graphene composites for electrode materials. [43][44][45][46] Transition metal sulfides, as an important class of inorganics, can be used as excellent electrode materials for various types of electrochemical energy storage, such as lithium-ion batteries, sodium-ion batteries, supercapacitors, and others. Recent works have identified that mixing graphene or graphene derivatives with transition metal sulfides can result in novel composites with better electrochemical performance. This review summarizes ...

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Section: Supercapacitormentioning

confidence: 99%

Section: Supercapacitormentioning

confidence: 99%

Transition Metal Sulfides Based on Graphene for Electrochemical Energy Storage

Geng

Zheng

Tang

et al. 2018

Advanced Energy Materials

751

281

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show abstract

“…32 Graphene is hailed as a revolutionary material given its excellent electrical conductivity, large specic surface area, high mechanical strength and ease of functionalisation, 33 making it ideal for energy storage devices, such as Li/Na-ion batteries 34 and supercapacitors. 35 Graphene (and the closely related reduced graphene oxide (rGO)), has also had an immediate impact on the properties of thermoelectrics when introduced to make composites such as CoSb 3 /rGO, 36 Ce 0.85 Fe 3 CoSb 12 /rGO, 37 PbTe/rGO, 38 Cu 2 Se/graphene, 39 and Cu 2Àx S/graphene 40 and when added to conducting polymers. 41,42 The common effect is to reduce k and/or improve the electronic properties.…”

Section: Introductionmentioning

confidence: 99%

Facile in situ solution synthesis of SnSe/rGO nanocomposites with enhanced thermoelectric performance

et al. 2020

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“…Although transition metal oxides and transition metal hydroxides have been widely used as supercapacitor electrode materials, the relatively lower conductivity impeded the application of these materials . In order to overcome the drawbacks of these materials, some other materials with higher conductivity were introduced to these materials to form composites .…”

Section: Introductionmentioning

confidence: 99%

NiCo₂S₄‐Based Composite Materials for Supercapacitors

2019

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In recent years, spinel‐type NiCo2S4 has been intensively studied as a supercapacitive material as it has a high theoretical capacitance, and is inexpensive and easy to synthesize. However, NiCo2S4 alone as an electrode material suffers from the drawback of an unsatisfactory cycling stability. In order to achieve better electrochemical performances, NiCo2S4‐based composite materials have been developed for supercapacitors. In this Review, some recent research progress on NiCo2S4‐based composite materials for supercapacitors is outlined. Furthermore, some suggestions for the further improvement of NiCo2S4‐based materials for hybrid supercapacitors and the development of large‐scale synthesis methods are proposed.

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Highly exposed nickel cobalt sulfide–rGO nanoporous structures: an advanced energy-storage electrode material

Abstract: Uncontrollable diffusion and the associated decrease in rate have hampered the development of robust nanostructured porous metal sulfides to date.

Cited by 58 publications

References 71 publications

Transition Metal Sulfides Based on Graphene for Electrochemical Energy Storage

Transition Metal Sulfides Based on Graphene for Electrochemical Energy Storage

Facile in situ solution synthesis of SnSe/rGO nanocomposites with enhanced thermoelectric performance

NiCo₂S₄‐Based Composite Materials for Supercapacitors

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Highly exposed nickel cobalt sulfide–rGO nanoporous structures: an advanced energy-storage electrode material

Abstract: Uncontrollable diffusion and the associated decrease in rate have hampered the development of robust nanostructured porous metal sulfides to date.

Cited by 58 publications

References 71 publications

Transition Metal Sulfides Based on Graphene for Electrochemical Energy Storage

Transition Metal Sulfides Based on Graphene for Electrochemical Energy Storage

Facile in situ solution synthesis of SnSe/rGO nanocomposites with enhanced thermoelectric performance

NiCo2S4‐Based Composite Materials for Supercapacitors

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NiCo₂S₄‐Based Composite Materials for Supercapacitors