Interface coupling 2D/2D SnSe2/graphene heterostructure as long-cycle anode for all-climate lithium-ion battery

Chen, Hongwen; Liu, Rumin; Yang, Wei; Cao, Junhui; Chen, Jian; Hou, Yang; Guo, Yichuan; Khatoon, Rabia; Chen, Lingxiang; Zhang, Qinghua; He, Qinggang; Lü, Jianguo

doi:10.1016/j.cej.2020.126973

Cited by 69 publications

(29 citation statements)

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“…Figure 5 a shows the CV curves of the rGO/ SnSe 2 -CoSe 2 electrode with scanning rate of 0.1 mV s −1 . The first cycle is slightly inconsistent with the following cycles, which is ascribed to the solid electrolyte interface (SEI) formation [47,[49][50][51][52][53]. In detail, the cathode peak at 1.94 V corresponds to the intercalation of sodium ions [49].…”

Section: Resultsmentioning

confidence: 99%

“…In the anodic scan, the peak at 0.25 V is owing to the de-alloying process of Na 3.75 Sn [41], while the peaks at 0.62, 0.92, 1.46, and 1.83 V are related to the sodium extraction and the oxidation of Sn to SnSe 2 , and Co to CoSe 2 , respectively [49,53,56]. Furthermore, the second and third CV curves of the rGO/SnSe 2 -CoSe 2 electrode are almost overlapped, implying its excellent cycling stability [57].…”

Section: Resultsmentioning

confidence: 99%

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Heterostructured SnSe2-CoSe2 microspheres embedded in reduced graphene oxides as an anode material with high sodium storage

Huang

Wang

et al. 2021

Ionics

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Bimetallic selenides are expected to be ideal anode materials for sodium ion batteries (SIBs). However, some problems still need to be solved, such as volume expansion and sluggish redox kinetics of Na ion. This work successfully designed and synthesized a composite of heterostructured SnSe 2 -CoSe 2 microspheres embedded in reduction graphene oxide network (designated as rGO/ SnSe 2 -CoSe 2 ) via one-step hydrothermal and followed annealing selenization process. The micro-nano hierarchical structure and reduction graphene oxide network can accelerate the Na + transport kinetics and relieve the volume change, thereby promoting the electrochemical performance of SIBs. Furthermore, the weak metal-selenide bonds and heterostructure of the bimetallic boundary can provide numerous active sites. As respect, the composite exhibits a high discharge capacity, enhanced rate capability, and superior cycling performance with a reversible capacity of 395 mAh g −1 after 600 cycles at 1 A g −1 . These results reveal that this composite will be enormous potentiality in building efficient SIBs.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Heterostructured SnSe2-CoSe2 microspheres embedded in reduced graphene oxides as an anode material with high sodium storage

Huang

Wang

et al. 2021

Ionics

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“…Generally, these heterojunction structures are advantageous for superior electrochemical performance because heterojunctions restrain volume distension, which is concomitant with electrochemical reactions 4‐6 . By repressing the volume change, heterojunctions are conducive to sustaining morphological stability and preventing pulverization 4,7 . Further, the separated nanocrystals have high surface area and form a built‐in electric field at heterointerfaces, which results in a superior rate performance 8,9 …”

Section: Intoductionmentioning

confidence: 99%

Electrochemical properties of yolk‐shell structured cobalt hydroxy chloride‐carbon composite as an anode for lithium‐ion batteries

Kim

Park

2022

Intl J of Energy Research

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Heterojunction structures from transition metal compound (TMC) with multiple anions are considered promising to improve the electrochemical performance of anode materials for lithium-ion batteries. In this study, yolk-shell structures consisting of cobalt hydroxy chloride yolk and carbon shell (CoOHCl@C) were synthesized through simple infiltration and in-situ hydroxylation. The capillary force caused the dissolved cobalt chloride to permeate into the hollow carbon, and then, during the hydroxylation process, water molecules facilitated Ostwald ripening to centralize cobalt hydroxy chloride. This novel synthesis process is eco-friendly and economical because this method generates no by-product and effluent. Especially, the hydroxylation step could be easily applied in classic heating furnace. The synthesized cobalt hydroxy chloride formed a heterojunction structure of cobalt hydroxide and cobalt chloride crystals after the first discharge and charge step, and the nanocrystals induced a built-in electric field at the heterointerfaces to decrease charge transfer resistance and improve the rate performance. In addition, the applied carbon shell synergized with the heterojunction structure to improve the stability during repeated cycling. The CoO-HCl@C anode exhibited stable cycle performance over 100 cycles at 2.0 A g À1 , wherein a discharge capacity of 665 mA h g À1 was delivered at the 100th cycle, and its capacity retention was 91.5%.

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“…With the rapid development of high-temperature energypowered devices such as those used in power plant and boiler equipment, the traditional lithium-ion batteries are now unable to meet the demand for energy. [1][2][3][4] Development of new secondary batteries with high specific energy has become a research hotspot. [5][6][7][8][9][10][11][12] Standing out in various energy storage systems, lithium-sulfur batteries (LSBs) with elemental sulfur as the active material are expected to be the next-generation batteries because of their high theoretical specific capacity (1675 mAh g −1 ) and energy density (2600 Wh kg −1 ), 13 as well as the advantages of low price and abundant resources.…”

Section: Introductionmentioning

confidence: 99%

Regulating adsorption ability toward polysulfides in a porous carbon/Cu₃P hybrid for an ultrastable high‐temperature lithium–sulfur battery

Guo

Khatoon

et al. 2021

Carbon Energy

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Lithium-sulfur batteries (LSBs) can work at high temperatures, but they suffer from poor cycle life stability due to the "shuttle effect" of polysulfides. In this study, pollen-derived porous carbon/cuprous phosphide (PC/Cu 3 P) hybrids were rationally synthesized using a one-step carbonization method using pollen as the source material, acting as the sulfur host for LSBs. In the hybrid, polar Cu 3 P can markedly inhibit the "shuttle effect" by regulating the adsorption ability toward polysulfides, as confirmed by theoretical calculations and experimental tests. As an example, the camellia pollen porous carbon (CPC)/Cu 3 P/S electrode shows a high capacity of 1205.6 mAh g −1 at 0.1 C, an ultralow capacity decay rate of 0.038% per cycle after 1000 cycles at 1 C, and a rather high initial Coulombic efficiency of 98.5%. The CPC/Cu 3 P LSBs can work well at high temperatures, having a high capacity of 545.9 mAh g −1 at 1 C even at 150°C. The strategy of the PC/Cu 3 P hybrid proposed in this study is expected to be an ideal cathode for ultrastable high-temperature LSBs. We believe that this strategy is universal and worthy of in-depth development for the next generation energy storage devices.

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Interface coupling 2D/2D SnSe2/graphene heterostructure as long-cycle anode for all-climate lithium-ion battery

Cited by 69 publications

References 59 publications

Heterostructured SnSe2-CoSe2 microspheres embedded in reduced graphene oxides as an anode material with high sodium storage

Heterostructured SnSe2-CoSe2 microspheres embedded in reduced graphene oxides as an anode material with high sodium storage

Electrochemical properties of yolk‐shell structured cobalt hydroxy chloride‐carbon composite as an anode for lithium‐ion batteries

Regulating adsorption ability toward polysulfides in a porous carbon/Cu₃P hybrid for an ultrastable high‐temperature lithium–sulfur battery

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Interface coupling 2D/2D SnSe2/graphene heterostructure as long-cycle anode for all-climate lithium-ion battery

Cited by 69 publications

References 59 publications

Heterostructured SnSe2-CoSe2 microspheres embedded in reduced graphene oxides as an anode material with high sodium storage

Heterostructured SnSe2-CoSe2 microspheres embedded in reduced graphene oxides as an anode material with high sodium storage

Electrochemical properties of yolk‐shell structured cobalt hydroxy chloride‐carbon composite as an anode for lithium‐ion batteries

Regulating adsorption ability toward polysulfides in a porous carbon/Cu3P hybrid for an ultrastable high‐temperature lithium–sulfur battery

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Regulating adsorption ability toward polysulfides in a porous carbon/Cu₃P hybrid for an ultrastable high‐temperature lithium–sulfur battery