Flower-like Cu5Sn2S7/ZnS nanocomposite for high performance supercapacitor

Yu, Feng; Tiong, Vincent Tiing; Pang, Le; Zhou, Rusen; Wang, Xiaoxiang; Waclawik, Eric R.; Ostrikov, Kostya Ken; Wang, Hongxia

doi:10.1016/j.cclet.2019.01.004

Cited by 37 publications

(20 citation statements)

References 47 publications

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“…The electrode material is one of the key components that affect the performance of a supercapacitor [6][7][8]. So far, researches on electrode materials have mainly focused on three different types of active materials including carbon-based materials, conductive polymers and transition metal compound materials [9]. Conductive polymers usually have a low melting point and can shrink, soften or even melt at high operational temperatures [10], while the specific capacitance of traditional carbon-based electrode materials is too low to fulfil the requirements of some special practical applications [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Preparation of mulberry-like RuO2 electrode material for supercapacitors

Pang

Wang

2020

Rare Met.

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As a newly emerging excellent energy storage device, supercapacitors have been widely studied due to their unique advantages. Electrode material is one of the key components that determine the performance of a supercapacitor. Among the various electrode materials of supercapacitors, RuO 2 has attracted great attention in the scientific community due to its high theoretical energy storage capability and excellent stability. However, most RuO 2 materials suffer the problem of low specific surface area, causing a much lower actual capacitance value compared to the theoretical performance of the material. In this work, a mulberry-like RuO 2 electrode material with large specific surface area (159.4 m 2 Ág -1 ) was successfully synthesized by a facial hydrothermal method. The electrochemical characterization has shown that the RuO 2 possesses a high specific capacitance of 400 FÁg -1 at a current density of 0.2 AÁg -1 and good capacitance retention rate of 84.7% after 6000 charge/discharge cycles under a current density of 10 AÁg -1 . The energy densities and power densities of the RuO 2 -AC supercapacitor vary from 25.0 to 11.7 WhÁkg -1 and 160 to 10,560 WÁkg -1 at current density ranging from 0.2 to 10.0 AÁg -1 , respectively.

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Section: Introductionmentioning

confidence: 99%

Preparation of mulberry-like RuO2 electrode material for supercapacitors

Pang

Wang

2020

Rare Met.

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“…47 The GCD curves are almost the same for the charging and discharging parts, which exhibit good electrochemical reversibility. As displayed in Figure 5e, the calculated energy density was 20.87 W h kg −1 at a power density of 814 W h kg −1 , which are much better than those of related HSCs, such as ZnCoS//PrGO (17.7 W h kg −1 at 435 W kg −1 ), 31 Cu 5 Sn 2 S 7 /ZnS//Cu 5 Sn 2 S 7 (11.08 W h kg −1 at 461 W kg −1 ), 48 g-C 3 N 4 /ZnS//g-C 3 N 4 /ZnS (10.4 W h kg −1 at 187.3 W kg −1 ), 49 CoS nanoflower//AC (15.58 W h kg −1 at 700.12 W kg −1 ), 50 Co 9 S 8 /NS-C//AC (14.85 W h kg −1 at 681.82 W kg −1 ), 51 and Co−S−P//AC (17.9 W h kg −1 at 266.6 W kg −1 ). 52 The cycling stability study indicates that 78% capacitance retention can be achieved after 5000 cycles, implying the excellent stability (Figure 5f).…”

Section: Resultsmentioning

confidence: 99%

Controlled Preparation of Zn–Co–S Nanosheet Arrays for High-Performance All-Solid-State Supercapacitors

Chen

Wang

et al. 2021

ACS Appl. Energy Mater.

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To develop new-generation all-solid-state hybrid supercapacitors (HSCs), bimetal sulfides are important electrode materials because of their superior electrochemical activity. A controlled self-sacrifice template strategy was explored to prepare a Zn−Co−S nanosheet array (NSA) as an electrode material. This controlled procedure contains three steps including the facile formation of a NSA on Ni foam (NF), the conversion of bimetal oxide by annealing in air, and the translation of bimetal sulfide through a S 2− anion-exchange reaction. A specific capacitance of 1904 F g −1 (952 C g −1 ) at 1 A g −1 is demonstrated by the Zn−Co−S NSA/NF. In addition, we incorporated the Zn−Co−S NSA/NF into a HSC and verified its excellent energy density and stability over 5000 cycles. This research provides a feasible strategy to rationally prepare bimetal sulfides for energy storage devices.

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“…Clearly, ZnS@Co 3 S 4 @NiO nanosheets exhibit higher specific capacitance than ZnS@ Co 3 S 4 nanorods at each current density, revealing that morphology reshaping by introducing NiO can effectively enhance the reversible capacitance of the composites. Compared with other ZnS or Co 3 S 4 -based electrode materials (Figure 7e), such as graphitic-C 3 N 4 @ZnS composite, [21] Co 3 S 4 nanoneedles, [22] rGO-CNT wrapped Co 3 S 4 nanocomposites, [27] Cu 5 Sn 2 S 7 @ ZnS composite, [50] ZnCoS nanomaterial, [51] ultrathin Co 3 S 4 @ CoMo 2 S 4 nanosheets, [52] and hollow NiCo 2 S 4 /Co 9 S 8 nanospheres, [53] ZnS@Co 3 S 4 @NiO nanosheets also show excellent reversible capacitance and rate capability. In addition, compared with other Zn-based sulfides or Co-based sulfides with various morphologies, ZnS@Co 3 S 4 @NiO nanosheets still indicate more excellent reversible capacitances (Table S1, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Construction of Porous ZnS@Co₃S₄@NiO Nanosheets Hybrid Materials for High‐Performance Pseudocapacitor Electrode by Morphology Reshaping

Liu

Peng

et al. 2020

Advanced Sustainable Systems

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Designing electrode materials with high reversible capacitance is the key to developing high‐performance pseudocapacitors. In this work, a novel ternary hybrid material, porous ZnS@Co3S4@NiO nanosheets are successfully constructed through a morphology reshaping enabled by a hydrothermal method followed by calcination. From a macroscopic view, the introduction of NiO changes the nanorod morphology of ZnS@Co3S4, and forms a porous nanosheet structure. The porous architecture with an increased specific surface area can promote the transport of ions and electrons, accelerate the diffusion of the electrolyte, and offer more active sites for electrochemical reactions. These advantages enhance the electrochemical properties of ZnS@Co3S4@NiO nanosheets when used as electrode materials for supercapacitors. ZnS@Co3S4@NiO nanosheets deliver an initial capacitance of 1418.7 F g−1, and it also reaches 1550.9 F g−1 with a capacitance retention rate of 109.3% at 5 A g−1, after 5000 cycles. However, ZnS@Co3S4 nanorods only deliver an initial capacitance of 708.7 F g−1, and maintain 716.4 F g−1 with a capacitance retention rate of 101.1% after 5000 cycles. These results show that the ZnS@Co3S4@NiO nanosheets are a promising electrode material for high‐performance pseudocapacitor electrode, and morphology reshaping is an effective strategy to design high‐performance pseudocapacitive materials.

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Flower-like Cu5Sn2S7/ZnS nanocomposite for high performance supercapacitor

Cited by 37 publications

References 47 publications

Preparation of mulberry-like RuO2 electrode material for supercapacitors

Preparation of mulberry-like RuO2 electrode material for supercapacitors

Controlled Preparation of Zn–Co–S Nanosheet Arrays for High-Performance All-Solid-State Supercapacitors

Construction of Porous ZnS@Co₃S₄@NiO Nanosheets Hybrid Materials for High‐Performance Pseudocapacitor Electrode by Morphology Reshaping

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Flower-like Cu5Sn2S7/ZnS nanocomposite for high performance supercapacitor

Cited by 37 publications

References 47 publications

Preparation of mulberry-like RuO2 electrode material for supercapacitors

Preparation of mulberry-like RuO2 electrode material for supercapacitors

Controlled Preparation of Zn–Co–S Nanosheet Arrays for High-Performance All-Solid-State Supercapacitors

Construction of Porous ZnS@Co3S4@NiO Nanosheets Hybrid Materials for High‐Performance Pseudocapacitor Electrode by Morphology Reshaping

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Construction of Porous ZnS@Co₃S₄@NiO Nanosheets Hybrid Materials for High‐Performance Pseudocapacitor Electrode by Morphology Reshaping