Mo-doped 3D carbon@Sn as high performance anode material for lithium ion batteries

Wu, Kaidan; Feng, Yefeng; Huang, Jun; Bai, Chen; He, Miao

doi:10.1016/j.cplett.2020.137832

Cited by 10 publications

(2 citation statements)

References 26 publications

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“…Given the excellent cyclic performance and high security, lithium-ion batteries (LIBs) are regarded as the main energy supply for electronic devices, for example, notebooks and smartphones. − However, the high cost of lithium and its shortage of natural resources have rendered huge challenges for LIBs in the long-term global energy needs. − Therefore, new energy storage methods and technologies are eagerly to be developed. − Owing to the low price and available resources, sodium-ion batteries (SIBs) have been considered as ideal alternatives for LIBs. , Various SIB anodes, including alloys, , metal oxides, , and metal chalcogenides, , have been developed. Among them, Sn-based materials (SnO 2 , SnO, or Sn) show high theoretical storage capacities, such as 790 mA h g –1 for SnO 2 , 875 mA h g –1 for SnO, and 990 mA h g –1 for Sn . However, the great volume expansion of Sn-based materials makes it difficult for them to maintain a high charge capacity in the prepared electrodes.…”

Section: Introductionmentioning

confidence: 99%

“…Among them, Sn-based materials (SnO 2 , SnO, or Sn) show high theoretical storage capacities, such as 790 mA h g −1 for SnO 2 , 18 875 mA h g −1 for SnO, 19 and 990 mA h g −1 for Sn. 20 However, the great volume expansion of Sn-based materials makes it difficult for them to maintain a high charge capacity in the prepared electrodes. Various strategies have been introduced to adjust the size, morphology, and composition of Sn-based materials to overcome the inherent shortcomings.…”

Section: Introductionmentioning

confidence: 99%

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Self-Standing Film Assembled using SnS–Sn/Multiwalled Carbon Nanotubes Encapsulated Carbon Fibers: A Potential Large-Scale Production Material for Ultra-stable Sodium-Ion Battery Anodes

Sun

Yang

Shi

et al. 2021

ACS Appl. Mater. Interfaces

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High-energy sodium-ion batteries have a significant prospective application as a next-generation energy storage technology. However, this technology is severely hindered by the lack of large-scale production of battery materials. Herein, a self-standing film, assembled with SnS–Sn/multiwalled carbon nanotubes encapsulated in carbon fibers (SnS–Sn/MCNTs@CFs), is prepared using ball milling and electrospinning techniques and used as sodium-ion battery anodes. To compensate the poor internal conductivity of SnS–Sn nanoparticles, MCNTs are used to interweave SnS–Sn nanoparticles to improve the conductivity. Moreover, the designed three-dimensional carbon fiber conductive network can effectively shorten the diffusion path of electron/Na+, accelerate the reaction kinetics, and provide abundant active sites for sodium absorption. Benefiting from these unique features, the self-standing film offers a high reversible capacity of 568 mA h g–1 at 0.1 A g–1 and excellent cycling stability at 1 A g–1 with a reversible capacity of 359.3 mA h g–1 after 1000 cycles. In the sodium-ion full cell device, the capacity is stable at 283.7 mA h g–1 after 100 cycles at a current of 100 mA g–1. This work provides a new strategy for electrode design and facilitates the large-scale application of the sodium-ion battery.

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