Pseudocapacitive Characteristics of Low-Carbon Silicon Oxycarbide for Lithium-Ion Capacitors

Martin Halim, Guicheng Liu, Ryanda Enggar Anugrah Ardhi, Chairul Hudaya, Ongky Wijaya, Sang-Hyup Lee, A. Young Kim, Joong Kee Lee

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Lithium-ion capacitors (LICs) and lithium-ion batteries (LIBs) are important energy storage devices. As a material with good mechanical, thermal, and chemical properties, low-carbon silicon oxycarbide (LC-SiOC), a kind of silicone oil-derived SiOC, is of interest as an anode material, and we have examined the electrochemical behavior of LC-SiOC in LIB and LIC devices. We found that the lithium storage mechanism in LC-SiOC, prepared by pyrolysis of phenyl-rich silicon oil, depends on an oxygen-driven rather than a carbon-driven mechanism within our experimental scope. An investigation of the electrochemical performance of LC-SiOC in half- and full-cell LIBs revealed that LC-SiOC might not be suitable for full-cell LIBs because it has a lower capacity (238 mAh g-1) than that of graphite (290 mAh g-1) in a cutoff voltage range of 0-1 V versus Li/Li+, as well as a substantial irreversible capacity. Surprisingly, LC-SiOC acts as a pseudocapacitive material when it is tested in a half-cell configuration within a narrow cutoff voltage range of 0-1 V versus Li/Li+. Further investigation of a "hybrid" supercapacitor, also known as an LIC, in which LC-SiOC is coupled with an activated carbon electrode, demonstrated that a power density of 156 000 W kg-1 could be achieved while maintaining an energy density of 25 Wh kg-1. In addition, the resulting capacitor had an excellent cycle life, holding â90% of its energy density even after 75 000 cycles. Thus, LC-SiOC is a promising active material for LICs in applications such as heavy-duty electric vehicles.

Original languageEnglish
Pages (from-to)20566-20576
Number of pages11
JournalACS Applied Materials and Interfaces
Volume9
Issue number24
DOIs
Publication statusPublished - 2017 Jun 21
Externally publishedYes

Fingerprint

Silicon
Lithium
Capacitors
Carbon
Ions
Silicone Oils
Graphite
Electric potential
Electric vehicles
Silicones
Activated carbon
Energy storage
Chemical properties
Life cycle
Anodes
Oils
Pyrolysis
Thermodynamic properties
Oxygen
Mechanical properties

Keywords

  • lithium-ion capacitor
  • low-carbon silicon oxycarbide
  • oxygen-driven mechanism
  • prelithiation
  • pseudocapacitive characteristic
  • silicone oil-derived SiOC

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Halim, M., Liu, G., Ardhi, R. E. A., Hudaya, C., Wijaya, O., Lee, S-H., ... Lee, J. K. (2017). Pseudocapacitive Characteristics of Low-Carbon Silicon Oxycarbide for Lithium-Ion Capacitors. ACS Applied Materials and Interfaces, 9(24), 20566-20576. https://doi.org/10.1021/acsami.7b04069

Pseudocapacitive Characteristics of Low-Carbon Silicon Oxycarbide for Lithium-Ion Capacitors. / Halim, Martin; Liu, Guicheng; Ardhi, Ryanda Enggar Anugrah; Hudaya, Chairul; Wijaya, Ongky; Lee, Sang-Hyup; Kim, A. Young; Lee, Joong Kee.

In: ACS Applied Materials and Interfaces, Vol. 9, No. 24, 21.06.2017, p. 20566-20576.

Research output: Contribution to journalArticle

Halim, M, Liu, G, Ardhi, REA, Hudaya, C, Wijaya, O, Lee, S-H, Kim, AY & Lee, JK 2017, 'Pseudocapacitive Characteristics of Low-Carbon Silicon Oxycarbide for Lithium-Ion Capacitors', ACS Applied Materials and Interfaces, vol. 9, no. 24, pp. 20566-20576. https://doi.org/10.1021/acsami.7b04069
Halim, Martin ; Liu, Guicheng ; Ardhi, Ryanda Enggar Anugrah ; Hudaya, Chairul ; Wijaya, Ongky ; Lee, Sang-Hyup ; Kim, A. Young ; Lee, Joong Kee. / Pseudocapacitive Characteristics of Low-Carbon Silicon Oxycarbide for Lithium-Ion Capacitors. In: ACS Applied Materials and Interfaces. 2017 ; Vol. 9, No. 24. pp. 20566-20576.
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