Interconnected Co 0.85 Se nanosheets as cathode materials for asymmetric supercapacitors

Yang, Jie; Yuan, Yuliang; Wang, Weicheng; Tang, Haichao; Ye, Zhizhen; Lu, Jianguo

doi:10.1016/j.jpowsour.2016.11.061

Cited by 115 publications

(34 citation statements)

References 41 publications

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“…It is well known that the electrochemical properties of electrochemical energy storage devices mainly depend on the electrode materials. According to the working mechanism of supercapacitors, electrode materials are classified into carbon materials (electric‐double‐layer capacitors) and pseudocapacitor electrode materials including metal sulfide, metal oxides, metal selenide, metal hydroxide, conductive polymers, and so on, which mainly store energy by reversible redox reactions. Recently, rapidly growing MOF materials have achieved extensive specific surface area, large pore volume, and uniform pore dispersions, which can provide potential electrode candidates for SCs .…”

Section: Introductionmentioning

confidence: 99%

Exposing {001} Crystal Plane on Hexagonal Ni‐MOF with Surface‐Grown Cross‐Linked Mesh‐Structures for Electrochemical Energy Storage

Liu

et al. 2019

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Hexagonal nickel‐organic framework (Ni‐MOF) [Ni(NO3)2·6H2O, 1,3,5‐benzenetricarboxylic acid, 4‐4′‐bipyridine] is fabricated through a one‐step solvothermal method. The {001} crystal plane is exposed to the largest hexagonal surface, which is an ideal structure for electron transport and ion diffusion. Compared with the surrounding rectangular crystal surface, the ion diffusion length through the {001} crystal plane is the shortest. In addition, the cross‐linked porous mesh structures growing on the {001} crystal plane strengthen the mixing with conductive carbon, inducing preferable conductivity, as well as increasing the area of ion contact and the number of active sites. These advantages enable the hexagonal Ni‐MOF to exhibit excellent electrochemical performance as supercapacitor electrode materials. In a three‐electrode cell, specific capacitance of hexagonal Ni‐MOF in the 3.0 m KOH electrolyte is 977.04 F g−1 and remains at the initial value of 92.34% after 5,000 cycles. When the hexagonal Ni‐MOF and activated carbon are assembled into aqueous devices, the electrochemical performance remains effective.

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Section: Introductionmentioning

confidence: 99%

Exposing {001} Crystal Plane on Hexagonal Ni‐MOF with Surface‐Grown Cross‐Linked Mesh‐Structures for Electrochemical Energy Storage

Liu

et al. 2019

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“…[6][7][8][9][10] Carbon materials are currently used as commercial anodem aterials in lithium-ion batteries. [15][16][17][18][19][20][21] As an exceptional anode material for lithium-ion batteries, tinbaseda lloys have the advantages of high specific capacity and excellent safety performance, and have becomea ni mportant factori nt he development of anode materials for use in lithium-ion batteries. [11][12][13][14] In addition,t he low lithium storage capacity of carbon materials is the root cause of the difficultyo fi ncreasing the actual specific capacity.I nr ecent years, the designo fc omposite materi-als has been the main way to overcome these problems.…”

Section: Introductionmentioning

confidence: 99%

“…[11][12][13][14] In addition,t he low lithium storage capacity of carbon materials is the root cause of the difficultyo fi ncreasing the actual specific capacity.I nr ecent years, the designo fc omposite materi-als has been the main way to overcome these problems. [15][16][17][18][19][20][21] As an exceptional anode material for lithium-ion batteries, tinbaseda lloys have the advantages of high specific capacity and excellent safety performance, and have becomea ni mportant factori nt he development of anode materials for use in lithium-ion batteries. [22][23][24][25][26] Composite materials combiningc arbon and tin-based alloys have become an important kind of anode materialf or lithium-ion batteries and are now widely studied.…”

Section: Introductionmentioning

confidence: 99%

Two‐Dimensional SnSe₂/CNTs Hybrid Nanostructures as Anode Materials for High‐Performance Lithium‐Ion Batteries

Chen

Jia

et al. 2019

Chemistry A European J

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Tind iselenide (SnSe 2 ), as an anodem aterial,h as outstandingp otential for use in advanced lithium-ion batteries. However,l ike other tin-based anodes, SnSe 2 suffers from poor cycle life and low rate capabilityd ue to large volume expansion during the repeated Li + insertion/de-insertion process. This work reports an effectivea nd easy strategy to combine SnSe 2 and carbon nanotubes (CNTs) to form a SnSe 2 /CNTsh ybrid nanostructure. The synthesized SnSe 2 has ar egularh exagonal shape with at ypical 2D nanostructure and the carbon nanotubes combine well with the SnSe 2 nanosheets. The hybrid nanostructure can significantly reduce the serious damage to electrodes that occurs during electrochemical cycling processes. Remarkably,t he SnSe 2 / CNTse lectrodee xhibits ah igh reversible specific capacity of 457.6 mA hg À1 at 0.1 Ca nd 210.3 mA hg À1 after 100 cycles. At ac ycling rate of 0.5 C, the SnSe 2 /CNTse lectrode can still achieve ah igh value of 176.5 mA hg À1 ,w hereas av alue of 45.8 mA hg À1 is achieved for the pure SnSe 2 electrode. The enhanced electrochemical performance of the SnSe 2 /CNTs electrode demonstrates its great potential for use in lithiumion batteries.T hus, this work reports af acile approacht o the synthesis of SnSe 2 /CNTsa sap romising anode material for lithium-ionb atteries.Supporting information and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

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“…Nevertheless, the electrochemical capacitance of an ASC relies mainly on the positive electrode materials. Thus, during past few years, metal-based electrode materials, such as RuO 2 , MnO 2 , Ni 3 S 2 , etc., [10][11][12][13][14][15][16][17] have been exhibited excellent electrochemical properties and especially high specic capacitance.…”

Section: Introductionmentioning

confidence: 99%

Improved performance of a CoTe//AC asymmetric supercapacitor using a redox additive aqueous electrolyte

Gong

Huang

et al. 2018

RSC Adv.

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Interconnected Co 0.85 Se nanosheets as cathode materials for asymmetric supercapacitors

Cited by 115 publications

References 41 publications

Exposing {001} Crystal Plane on Hexagonal Ni‐MOF with Surface‐Grown Cross‐Linked Mesh‐Structures for Electrochemical Energy Storage

Exposing {001} Crystal Plane on Hexagonal Ni‐MOF with Surface‐Grown Cross‐Linked Mesh‐Structures for Electrochemical Energy Storage

Two‐Dimensional SnSe₂/CNTs Hybrid Nanostructures as Anode Materials for High‐Performance Lithium‐Ion Batteries

Improved performance of a CoTe//AC asymmetric supercapacitor using a redox additive aqueous electrolyte

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Interconnected Co 0.85 Se nanosheets as cathode materials for asymmetric supercapacitors

Cited by 115 publications

References 41 publications

Exposing {001} Crystal Plane on Hexagonal Ni‐MOF with Surface‐Grown Cross‐Linked Mesh‐Structures for Electrochemical Energy Storage

Exposing {001} Crystal Plane on Hexagonal Ni‐MOF with Surface‐Grown Cross‐Linked Mesh‐Structures for Electrochemical Energy Storage

Two‐Dimensional SnSe2/CNTs Hybrid Nanostructures as Anode Materials for High‐Performance Lithium‐Ion Batteries

Improved performance of a CoTe//AC asymmetric supercapacitor using a redox additive aqueous electrolyte

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Two‐Dimensional SnSe₂/CNTs Hybrid Nanostructures as Anode Materials for High‐Performance Lithium‐Ion Batteries