LiFePO 4 nanoparticles encapsulated in graphene-containing carbon nanofibers for use as energy storage materials

Toprakci, Ozan; KARAHAN TOPRAKÇI, Hatice Aylin; Ji, Liwen; Lin, Zhan; Gu, Renpeng; Zhang, Xiangwu

doi:10.1063/1.3690936

LiFePO 4 nanoparticles encapsulated in graphene-containing carbon nanofibers for use as energy storage materials

Yazarlar (6)

Ozan Toprakci Nc State University, Amerika Birleşik Devletleri

Doç. Dr. Hatice Aylin KARAHAN TOPRAKÇI Nc State University, Amerika Birleşik Devletleri

Liwen Ji Nc State University, Amerika Birleşik Devletleri

Zhan Lin Nc State University, Amerika Birleşik Devletleri

Renpeng Gu Nc State University, Amerika Birleşik Devletleri

Xiangwu Zhang Nc State University, Amerika Birleşik Devletleri

Bildiri Türü	Tebliğ/Bildiri	Bildiri Dili	İngilizce
Bildiri Alt Türü	Tam Metin Olarak Yayınlanan Tebliğ (Uluslararası Kongre/Sempozyum)
Bildiri Niteliği	Web of Science Kapsamındaki Kongre/Sempozyum
DOI Numarası	10.1063/1.3690936
Kongre Adı	Journal of Renewable and Sustainable Energy
Kongre Tarihi	/
Basıldığı Ülke	Fransa	Basıldığı Şehir	Aix en Provence
UAK Araştırma Alanları	Tekstil Bilimi

Özet

LiFePO 4/graphene/C composite nanofibers, in which LiFePO 4 nanoparticles were encapsulated in graphene-containing carbon nanofiber matrix, were synthesized by using a combination of electrospinning and sol-gel techniques. Polyacrylonitrile (PAN) was used as the electrospinning media and the carbon source. Graphene was incorporated in order to increase the conductivity of the composite. PAN was dissolved in N,N-dimethylformamide (DMF). LiFePO 4 precursor and graphene were dispersed in DMF separately and were mixed with PAN solution before electrospinning. Electrospun fibers were heat-treated to obtain LiFePO 4/graphene/C composite nanofibers. The structure of LiFePO 4/graphene/C composite nanofibers was determined by X-ray diffraction analysis. The surface morphology and microstructure of LiFePO 4/graphene/C composite nanofibers were characterized using scanning electron microscopy and transmission electron microscopy. Electrochemical performance of LiFePO 4/graphene/C composite nanofibers was evaluated in coin-type cells. Graphene flakes were found to be well-dispersed in the carbonaceous matrix and increased the electrochemical performance of the composite nanofibers. As a result, cells containing LiFePO 4/graphene/C composite nanofiber cathodes showed good electrochemical performance, in terms of capacity, cycle life, and rate capability. © 2012 American Institute of Physics.

Anahtar Kelimeler

BM Sürdürülebilir Kalkınma Amaçları

Atıf Sayıları
Scopus	33

LiFePO 4 nanoparticles encapsulated in graphene-containing carbon nanofibers for use as energy storage materials

Dergi Adı	Journal of Renewable and Sustainable Energy
Yayıncı	American Institute of Physics
Açık Erişim	Hayır
ISSN	1941-7012
E-ISSN	1941-7012
CiteScore	3,7
SJR	0,517
SNIP	0,634

LiFePO 4 nanoparticles encapsulated in graphene-containing carbon nanofibers for use as energy storage materials

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