Synthesis of self-assembled cobalt sulphide coated carbon nanotube and its superior electrochemical performance as anodes for Li-ion batteries

Huang, Zhi Xiang; Wang, Ye; Wong, Jen It; Shi, Wen; Yang, Hui Ying

doi:10.1016/j.electacta.2015.03.183

Cited by 66 publications

(37 citation statements)

References 50 publications

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“…The irreversible capacity loss is caused by the formation of SEI layer and some inevitable side reactions during the first cycle. [47][48] However, the Coulombic efficiency tends to be stable at around 100 % from the second cycle. After 140 cycles, the CuCo 2 S 4 sub-microsphere electrode still possesses a high specific capacity of up to 522.4 mA h g À 1 , which exhibits a good cycling stability.…”

Section: Resultsmentioning

confidence: 99%

One‐Pot Synthesis of CuCo₂S₄ Sub‐Microspheres for High‐Performance Lithium‐/Sodium‐Ion Batteries

Jiao

Feng

et al. 2019

ChemElectroChem

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Ternary transition metal sulfides have come into notice as a new class of prospective material with multiple applications in energy storage. In this work, CuCo 2 S 4 sub-microspheres with sizes of 0.3-0.5 μm were prepared by a facile one-pot solvothermal method. This method combines chemical coprecipitation and sulfidation processes into one pot to make it low-cost and time-saving by controlling the volume ratio of mixed solvent. The as-prepared CuCo 2 S 4 sub-microsphere exhibits an outstanding energy storage performance as dual anodes for lithium/sodium-ion batteries. It possesses a high specific capacity of 1081.3 mA h g À 1 at 100 mA g À 1 after 100 cycles with pseudocapacitive properties in lithium-ion batteries and 522.4 mA h g À 1 at 200 mA g À 1 after 140 cycles in sodium-ion batteries. The superior electrochemical performances of CuCo 2 S 4 sub-microspheres forecast they will be a kind of competitive anode materials for lithium/sodium-ion batteries.

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Section: Resultsmentioning

confidence: 99%

One‐Pot Synthesis of CuCo₂S₄ Sub‐Microspheres for High‐Performance Lithium‐/Sodium‐Ion Batteries

Jiao

Feng

et al. 2019

ChemElectroChem

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“…[29] The capacity-recovery behaviorm ay also be associated with the spurious capacity effect of the polymericf ilms to some extent. [58,59] The stabilized capacities after 1000c ycles clearly suggest that the CuCo 2 S 4 electrode possessese xcellent cycling performance even at rather high current densities. Some spheres consisting of tiny particles of CuCo 2 S 4 were also observed after 1000 cycles (Figure 7), whichc ould prove the stabilityo ft he porous core-shell structure.…”

Section: Resultsmentioning

confidence: 98%

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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“…Figure 5a shows the Nyquist plots where the curves from both electrodes display similar profile; a small semi-circle in the high frequency region corresponding to a combination of surface film resistance (R sf ) and charge transfer resistance (R ct ) followed by an acute straight line in the low frequency region which arises from the Warburg region (Z w ) as well as a Li accumulation element (C int )3045. An equivalent circuit consisting of R sf+ct , Z w , C int , as well as R e , which is the ohmic resistance arising from the electrolyte and cell components, and CPE (sf+dl) , a constant phase element relating to the surface film and double layer, was used to fit the Nyquist plots (inset in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The carbonaceous materials within the nanocomposite does not only provide volume change buffers for SnS 2 , but also serves to improve electron conduction. These strategies are also common to transition metal oxides and sulfides based anode materials2627282930. However, efforts have been limited to the above strategies and little has been done to properly utilize both conversion (equation 2) and alloying (equation 4) process of SnS 2, which can potentially improve capacities significantly.…”

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Unlocking the potential of SnS2: Transition metal catalyzed utilization of reversible conversion and alloying reactions

Huang

Wang

Liu

et al. 2017

Sci Rep

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The alloying-dealloying reactions of SnS2 proceeds with the initial conversion reaction of SnS2 with lithium that produces Li2S. Unfortunately, due to the electrochemical inactivity of Li2S, the conversion reaction of SnS2 is irreversible, which significantly limit its potential applications in lithium-ion batteries. Herein, a systematic understanding of transition metal molybdenum (Mo) as a catalyst in SnS2 anode is presented. It is found that Mo catalyst is able to efficiently promote the reversible conversion of Sn to SnS2. This leads to the utilization of both conversion and alloying reactions in SnS2 that greatly increases lithium storage capability of SnS2. Mo catalyst is introduced in the form of MoS2 grown directly onto self-assembled vertical SnS2 nanosheets that anchors on three-dimensional graphene (3DG) creating a hierarchal nanostructured named as SnS2/MoS2/3DG. The catalytic effect results in a significantly enhanced electrochemical properties of SnS2/MoS2/3DG; a high initial Coulombic efficiency (81.5%) and high discharge capacities of 960.5 and 495.6 mA h g−1 at current densities of 50 and 1000 mA g−1, respectively. Post cycling investigations using ex situ TEM and XPS analysis verifies the successful conversion reaction of SnS2 mediated by Mo. The successful integration of catalyst on alloying type metal sulfide anode creates a new avenue towards high energy density lithium anodes.

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Synthesis of self-assembled cobalt sulphide coated carbon nanotube and its superior electrochemical performance as anodes for Li-ion batteries

Cited by 66 publications

References 50 publications

One‐Pot Synthesis of CuCo₂S₄ Sub‐Microspheres for High‐Performance Lithium‐/Sodium‐Ion Batteries

One‐Pot Synthesis of CuCo₂S₄ Sub‐Microspheres for High‐Performance Lithium‐/Sodium‐Ion Batteries

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

Unlocking the potential of SnS2: Transition metal catalyzed utilization of reversible conversion and alloying reactions

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Synthesis of self-assembled cobalt sulphide coated carbon nanotube and its superior electrochemical performance as anodes for Li-ion batteries

Cited by 66 publications

References 50 publications

One‐Pot Synthesis of CuCo2S4 Sub‐Microspheres for High‐Performance Lithium‐/Sodium‐Ion Batteries

One‐Pot Synthesis of CuCo2S4 Sub‐Microspheres for High‐Performance Lithium‐/Sodium‐Ion Batteries

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

Unlocking the potential of SnS2: Transition metal catalyzed utilization of reversible conversion and alloying reactions

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One‐Pot Synthesis of CuCo₂S₄ Sub‐Microspheres for High‐Performance Lithium‐/Sodium‐Ion Batteries

One‐Pot Synthesis of CuCo₂S₄ Sub‐Microspheres for High‐Performance Lithium‐/Sodium‐Ion Batteries

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