ICCAS OpenIR
Poly(vinylidene chloride)-based carbon as an electrode material for high power electric double layer capacitors
Shi Zhi-qiang1; Qian Qing-li2; Wang Cheng-yang1; Zhang Shu-feng2; Yuan Guo-qing2; Wang Liang1
2009-12-01
Source PublicationNEW CARBON MATERIALS
ISSN1007-8827
Volume24Issue:4Pages:314-320
AbstractA series of poly vinylidene chloride (PVDC) based activated carbons was prepared by carbonization at 600-1 100 degrees C. Their formation, crystallinity, surface area and pore structure were characterized by thermogravimetry, X-ray diffraction and nitrogen adsorption. The electrochemical performance was investigated by cycle voltammetry, AC impedance and galvanostatic charge/discharge in a 30 % (mass fraction) KOH electrolyte. Results showed that the structure of PVDC-based carbons was amorphous and their high surface area (874969 m(2)/g) and abundant micropores were formed during the solid phase carbonization. PVDC-based carbon had a high gravimetric capacitance and specific capacitance per surface area, owing to its optimum pore size distribution suitable for the formation of electric double layers. The PVDC-based carbon heat-treated at 900 degrees C had a maximum capacitance and an excellent power performance. The specific capacitance can reach as high as 256. 9 F/g at low discharge current density (50 mA/g) and the capacitance retention ratio is 76. 5% at high current density (5 000 mA/g). The electrical conductivity of PVDC-based carbon increased and the diffusion resistance of electrolyte ions in pores decreased with increasing carbonization temperature, and the rate performance of the electric double layer capacitor is improved as a result.
KeywordElectrochemical Double Layer Poly(Vinylidene Chloride) Ion Size Pore Structure
Indexed BySCI
Language英语
WOS IDWOS:000273375800004
PublisherSCIENCE PRESS
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/65958
Collection中国科学院化学研究所
Corresponding AuthorWang Cheng-yang
Affiliation1.Tianjin Univ, Sch Chem Engn & Technol, Key Lab Green Chem Technol State Educ Minist, Tianjin 300072, Peoples R China
2.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Shi Zhi-qiang,Qian Qing-li,Wang Cheng-yang,et al. Poly(vinylidene chloride)-based carbon as an electrode material for high power electric double layer capacitors[J]. NEW CARBON MATERIALS,2009,24(4):314-320.
APA Shi Zhi-qiang,Qian Qing-li,Wang Cheng-yang,Zhang Shu-feng,Yuan Guo-qing,&Wang Liang.(2009).Poly(vinylidene chloride)-based carbon as an electrode material for high power electric double layer capacitors.NEW CARBON MATERIALS,24(4),314-320.
MLA Shi Zhi-qiang,et al."Poly(vinylidene chloride)-based carbon as an electrode material for high power electric double layer capacitors".NEW CARBON MATERIALS 24.4(2009):314-320.
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