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Hetero-interface constructs ion reservoir to enhance conversion reaction kinetics for sodium/lithium storage

Journal Article


Abstract


  • Developing high-capacity electrode materials is most vital to high-energy rechargeable batteries. The conversion reaction-based anode materials deliver substantially higher theoretical capacities in respect to intercalation-based materials. However, the sluggish conversion reaction kinetics is a big obstacle to deliver high practical capacity and rate capability, which is particularly severe for sodium storage. Herein, we implement an interface engineering approach by designing hetero-interfaces to enhance conversion reaction. As a proof of concept, Sb2S3-SnS2hetero-nanostructures are synthesized and show greatly improved electrochemical performance in terms of specific capacity and rate capability. The DFT calculations reveal that the hetero-interfacial electric field prompts sodium ions pump into the interfaces, which greatly reduces the activation barrier and hence accelerates reaction kinetics. The Sb2S3-SnS2hetero-interface serves therefore as a “reservoir” and fast diffusion channel for sodium or lithium ions. The obtained results provide important insights into engineering efficient hetero-nanostructures towards fast conversion reaction kinetics for rechargeable batteries.

UOW Authors


  •   Fang, Libin (external author)
  •   Lan, Zhenyun (external author)
  •   Guan, Wenhao (external author)
  •   Zhou, Peng (external author)
  •   Bahlawane, Naoufal (external author)
  •   Sun, Wenping
  •   Lu, Yunhao (external author)
  •   Liang, Chu (external author)
  •   Yan, Mi (external author)
  •   Jiang, Yinzhu (external author)

Publication Date


  • 2019

Citation


  • Fang, L., Lan, Z., Guan, W., Zhou, P., Bahlawane, N., Sun, W., Lu, Y., Liang, C., Yan, M. & Jiang, Y. (2019). Hetero-interface constructs ion reservoir to enhance conversion reaction kinetics for sodium/lithium storage. Energy Storage Materials, 18 107-113.

Scopus Eid


  • 2-s2.0-85054880130

Number Of Pages


  • 6

Start Page


  • 107

End Page


  • 113

Volume


  • 18

Place Of Publication


  • Netherlands

Abstract


  • Developing high-capacity electrode materials is most vital to high-energy rechargeable batteries. The conversion reaction-based anode materials deliver substantially higher theoretical capacities in respect to intercalation-based materials. However, the sluggish conversion reaction kinetics is a big obstacle to deliver high practical capacity and rate capability, which is particularly severe for sodium storage. Herein, we implement an interface engineering approach by designing hetero-interfaces to enhance conversion reaction. As a proof of concept, Sb2S3-SnS2hetero-nanostructures are synthesized and show greatly improved electrochemical performance in terms of specific capacity and rate capability. The DFT calculations reveal that the hetero-interfacial electric field prompts sodium ions pump into the interfaces, which greatly reduces the activation barrier and hence accelerates reaction kinetics. The Sb2S3-SnS2hetero-interface serves therefore as a “reservoir” and fast diffusion channel for sodium or lithium ions. The obtained results provide important insights into engineering efficient hetero-nanostructures towards fast conversion reaction kinetics for rechargeable batteries.

UOW Authors


  •   Fang, Libin (external author)
  •   Lan, Zhenyun (external author)
  •   Guan, Wenhao (external author)
  •   Zhou, Peng (external author)
  •   Bahlawane, Naoufal (external author)
  •   Sun, Wenping
  •   Lu, Yunhao (external author)
  •   Liang, Chu (external author)
  •   Yan, Mi (external author)
  •   Jiang, Yinzhu (external author)

Publication Date


  • 2019

Citation


  • Fang, L., Lan, Z., Guan, W., Zhou, P., Bahlawane, N., Sun, W., Lu, Y., Liang, C., Yan, M. & Jiang, Y. (2019). Hetero-interface constructs ion reservoir to enhance conversion reaction kinetics for sodium/lithium storage. Energy Storage Materials, 18 107-113.

Scopus Eid


  • 2-s2.0-85054880130

Number Of Pages


  • 6

Start Page


  • 107

End Page


  • 113

Volume


  • 18

Place Of Publication


  • Netherlands