Facile hydrothermal synthesis of SnCoS<sub>4</sub>/graphene composites with excellent electrochemical performance for reversible lithium ion storage

Ye, Jianbo; Chen, Tao; Chen, Qiannan; Chen, Weixiang; Yu, Zheting; Xu, Shurui

doi:10.1039/c6ta04196e

Cited by 37 publications

(18 citation statements)

References 67 publications

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“…[6a, 22] The corresponding charge capacities of CNTs@C@CoS 2 and CNTs@CoS 2 for the first cycle are 996 and 875 mAh g À1 ,l eadingt ot he ac oulombic efficiency of 79.6 and 70.3 %, respectively.T he large capacity fading can be explained by the formation of SEI layer on electrode surface and the trapping of lithium inside the active material, which is common for metal sulfide anode materials. [23] After three cycles, the coulombic efficiency of CNTs@C@CoS 2 increases to 92 %. The cycle performance of the CNTs@C@CoS 2 and CNTs@CoS 2 are presentedi nF igure 4c at the currentd ensity of 0.2 Ag À1 .I tc an be seen that the discharge capacity of the CNTs@CoS 2 electrode drops to 751 mAh g À1 after 100 cycles.…”

Section: Resultsmentioning

confidence: 96%

Amorphous Transition Metal Sulfides Anchored on Amorphous Carbon‐Coated Multiwalled Carbon Nanotubes for Enhanced Lithium‐Ion Storage

Jin

Zhai

Wang

2017

Chemistry A European J

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Cobalt sulfide and molybdenum sulfide, with high theoretical capacities, have been considered as one of most promising anode materials for lithium-ion batteries (LIBs). However, the poor cyclability and low rate performances originating from the large volume expansion and poor electrical conductivity extremely inhibit their practical application. Here, the electrochemical performances are effectively improved by growing amorphous cobalt sulfide and molybdenum sulfide onto amorphous carbon-coated multiwalled carbon nanotubes (CNTs@C@CoS and CNTs@C@MoS ). The CNTs@C@CoS presents a high reversible specific capacity of 1252 mAh g at 0.2 Ag , excellent rate performance of 672 mAh g (5 Ag ), and enhanced cycle life of 598 mAh g after 500 cycles at 2 Ag . For CNTs@C@MoS , it exhibits a specific capacity of 1395 mAh g , superior rate performance of 727 mAh g at 5 Ag , and long cycle stability (796 mAh g after 500 cycles at 2 Ag ). The enhanced electrochemical properties of the electrodes are probably ascribed to their amorphous nature, the combination of CNTs@C that adhered and hindered the agglomeration of CoS and MoS as well as the enhanced electronic conductivity.

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Section: Resultsmentioning

confidence: 96%

Amorphous Transition Metal Sulfides Anchored on Amorphous Carbon‐Coated Multiwalled Carbon Nanotubes for Enhanced Lithium‐Ion Storage

Jin

Zhai

Wang

2017

Chemistry A European J

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“…As ac onsequence, the electrochemical performances could be remarkably enhanced for applications in LIBs. [16][17][18] Many BMS materials,s uch as NiCo 2 S 4 , [19] Cu 2 SnS 3 , [20] CoSnS 4 , [21] MnCo 2 S 4 , [22] and Zn 0.76 Co 0.24 S, [23] have been investigated as anode materials for LIBs. For example, Yang et al designed 3D Zn 0.76 Co 0.24 Sn anoartichokes as anode material for LIBs, which exhibited ah igh capacity of 750 mA hg À1 at ac urrent density of 200 mA g À1 after 100 cycles.…”

Section: Introductionmentioning

confidence: 99%

Porous Core–Shell CuCo₂S₄ Nanospheres as Anode Material for Enhanced Lithium‐Ion Batteries

Zheng

Meng

et al. 2018

Chemistry A European J

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Porous core–shell CuCo2S4 nanospheres that exhibit a large specific surface area, sufficient inner space, and a nanoporous shell were synthesized through a facile solvothermal method. The diameter of the core–shell CuCo2S4 nanospheres is approximately 800 nm„ the radius of the core is about 265 nm and the thickness of the shell are approximately 45 nm, respectively. On the basis of the experimental results, the formation mechanism of the core–shell structure is also discussed. These CuCo2S4 nanospheres show excellent Li storage performance when used as anode material for lithium‐ion batteries. This material delivers high reversible capacity of 773.7 mA h g−1 after 1000 cycles at a current density of 1 A g−1 and displays a stable capacity of 358.4 mA h g−1 after 1000 cycles even at a higher current density of 10 A g−1. The excellent Li storage performance, in terms of high reversible capacity, cycling performance, and rate capability, can be attributed to the synergistic effects of both the core and shell during Li+ ion insertion/extraction processes.

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“…[4] Xia et al [5] synthesized NiCo 2 S 4 with conductivity about 100 times as high as that of NiCoO 4 .K ang et al [6] fabricated CoMoS 4 exhibiting the improvement on the electrochemical performance from the synergistic effect of the ternary metal sulfides. Xu et al [7] reported that SnCoS 4 /graphene hybrid showedl ower impedance and more excellent electrode reactionk inetics due to the hybrid nanocrystals with its unique structure and morphology.N evertheless, the applications of the TMSs anode are hampered for its structuralc racks, volumec hange, particle aggregation and capacityf ading during the delithiation/lithiation process. [8] To date, numerousr esearch attempts have been made to explore the possibilities to improvethe specific capacity,rate capability, and cycle stabilityo fL IBs.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Nanotubes Constructed by Co₉S₈/MoS₂ Ultrathin Nanosheets Wrapped with Reduced Graphene Oxide for Advanced Lithium Storage

Liu

Geng

Ang

et al. 2018

Chemistry An Asian Journal

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Nanostructured hybrid metal sulfides have attracted intensive attention due to their fascinating properties that are unattainable by the single-phased counterpart. Herein, we report an efficient approacht oc onstruct cobalt sulfide/molybdenum disulfide (Co 9 S 8 /MoS 2 )w rapped with reduced graphene oxide (rGO). The unique structures constructed by ultrathin nanosheets ands ynergetic effects benefitting from bimetallic sulfides provide improved lithium ions reaction kinetics,a nd they retain good structurali ntegrity.I nterestingly,t he conductive rGO can facilitate electron transfer,i ncrease the electronic conductivity and accommodate the strain during cycling. When evaluated as anode ma-terials forl ithium-ion batteries (LIBs), the resultant reduced graphene oxide-coated cobalt sulfide/molybdenum disulfide (Co 9 S 8 /MoS 2 @rGO)n anotubes deliver high specific capacities of 1140, 948, 897, 852, 820, 798 and 784 mAh g À1 at the various discharging current densities of 0.2, 0.5, 1, 2, 3, 4a nd 5Ag À1 ,r espectively.I na ddition, they can maintain an excellent cycle stability with ad ischarge capacity of 807 mAh g À1 at 0.2 Ag À1 after 70 cycles, 787 mAh g À1 at 1Ag À1 after 180 cycles and 541 mAh g À1 at 2Ag À1 after 200 cycles.T he proposed methodm ay offer fundamentalu nderstanding for the rational design of other hybrid functionalc omposites with high Li-storage properties.

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Facile hydrothermal synthesis of SnCoS₄/graphene composites with excellent electrochemical performance for reversible lithium ion storage

Abstract: An SnCoS4/graphene composite with uniformly distributed SnCoS4 hybrid nanocrystals was prepared by a one-pot hydrothermal route and exhibits excellent electrochemical performance for reversible lithium storage.

Cited by 37 publications

References 67 publications

Amorphous Transition Metal Sulfides Anchored on Amorphous Carbon‐Coated Multiwalled Carbon Nanotubes for Enhanced Lithium‐Ion Storage

Amorphous Transition Metal Sulfides Anchored on Amorphous Carbon‐Coated Multiwalled Carbon Nanotubes for Enhanced Lithium‐Ion Storage

Porous Core–Shell CuCo₂S₄ Nanospheres as Anode Material for Enhanced Lithium‐Ion Batteries

Hierarchical Nanotubes Constructed by Co₉S₈/MoS₂ Ultrathin Nanosheets Wrapped with Reduced Graphene Oxide for Advanced Lithium Storage

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Facile hydrothermal synthesis of SnCoS4/graphene composites with excellent electrochemical performance for reversible lithium ion storage

Abstract: An SnCoS4/graphene composite with uniformly distributed SnCoS4 hybrid nanocrystals was prepared by a one-pot hydrothermal route and exhibits excellent electrochemical performance for reversible lithium storage.

Cited by 37 publications

References 67 publications

Amorphous Transition Metal Sulfides Anchored on Amorphous Carbon‐Coated Multiwalled Carbon Nanotubes for Enhanced Lithium‐Ion Storage

Amorphous Transition Metal Sulfides Anchored on Amorphous Carbon‐Coated Multiwalled Carbon Nanotubes for Enhanced Lithium‐Ion Storage

Porous Core–Shell CuCo2S4 Nanospheres as Anode Material for Enhanced Lithium‐Ion Batteries

Hierarchical Nanotubes Constructed by Co9S8/MoS2 Ultrathin Nanosheets Wrapped with Reduced Graphene Oxide for Advanced Lithium Storage

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Resources

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Facile hydrothermal synthesis of SnCoS₄/graphene composites with excellent electrochemical performance for reversible lithium ion storage

Porous Core–Shell CuCo₂S₄ Nanospheres as Anode Material for Enhanced Lithium‐Ion Batteries

Hierarchical Nanotubes Constructed by Co₉S₈/MoS₂ Ultrathin Nanosheets Wrapped with Reduced Graphene Oxide for Advanced Lithium Storage