The preparation of a novel Si-CNF composite as an effective anodic material for lithium-ion batteries

Sang Min Jang, Jin Miyawaki, Masaharu Tsuji, Isao Mochida, Seong-Ho Yoon

Research output: Contribution to journalReview article

53 Citations (Scopus)

Abstract

The suggested pyrolytic carbon (PC) coated Si-carbon nanofiber (CNF) composites can be a solution to provide higher discharge capacity and cycle-ability facilitating the 1st cycle coulombic efficiency of cheap metallic Si particles as an appropriate anodic material for Li-ion battery. The CNFs on the surface of Si particle can provide flexible space to relieve volumetric expansion during charge. Well-controlled PC coating on the surface of Si particle can improve the coherence of CNFs on the Si particle, thereby to enhance the role of CNF as all the more effective electrode material. The additional PC coating on the Si-CNF composite can accomplish the lower surface area and afford the improvement of the 1st cycle coulombic efficiency. Ingenious combinations of PC coating and CNF compositeness successfully made the novel type Si-CNF composite to achieve a remarkable discharge capacity (1115 mA h g-1), an excellent cycle-ability (77% retention rate after 20th cycle), and a good 1st cycle coulombic efficiency (79%) for the effective application as an anode material.

Original languageEnglish
Pages (from-to)3383-3391
Number of pages9
JournalCarbon
Volume47
Issue number15
DOIs
Publication statusPublished - Jan 1 2009

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Carbon nanofibers
Composite materials
Carbon
Coatings
Discharge (fluid mechanics)
Anodes
Lithium-ion batteries
Electrodes
pyrolytic carbon

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

Cite this

The preparation of a novel Si-CNF composite as an effective anodic material for lithium-ion batteries. / Jang, Sang Min; Miyawaki, Jin; Tsuji, Masaharu; Mochida, Isao; Yoon, Seong-Ho.

In: Carbon, Vol. 47, No. 15, 01.01.2009, p. 3383-3391.

Research output: Contribution to journalReview article

Jang, Sang Min ; Miyawaki, Jin ; Tsuji, Masaharu ; Mochida, Isao ; Yoon, Seong-Ho. / The preparation of a novel Si-CNF composite as an effective anodic material for lithium-ion batteries. In: Carbon. 2009 ; Vol. 47, No. 15. pp. 3383-3391.
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AU - Yoon, Seong-Ho

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AB - The suggested pyrolytic carbon (PC) coated Si-carbon nanofiber (CNF) composites can be a solution to provide higher discharge capacity and cycle-ability facilitating the 1st cycle coulombic efficiency of cheap metallic Si particles as an appropriate anodic material for Li-ion battery. The CNFs on the surface of Si particle can provide flexible space to relieve volumetric expansion during charge. Well-controlled PC coating on the surface of Si particle can improve the coherence of CNFs on the Si particle, thereby to enhance the role of CNF as all the more effective electrode material. The additional PC coating on the Si-CNF composite can accomplish the lower surface area and afford the improvement of the 1st cycle coulombic efficiency. Ingenious combinations of PC coating and CNF compositeness successfully made the novel type Si-CNF composite to achieve a remarkable discharge capacity (1115 mA h g-1), an excellent cycle-ability (77% retention rate after 20th cycle), and a good 1st cycle coulombic efficiency (79%) for the effective application as an anode material.

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