An in situ ionic-liquid-assisted synthetic approach to iron fluoride/graphene hybrid nanostructures as superior cathode materials for lithium ion batteries


Autoria(s): Li, Bingjiang; Rooney, David W.; Zhang, Naiqing; Sun, Kening
Data(s)

12/06/2013

Resumo

<p>A tactful ionic-liquid (IL)-assisted approach to in situ synthesis of iron fluoride/graphene nanosheet (GNS) hybrid nanostructures is developed. To ensure uniform dispersion and tight anchoring of the iron fluoride on graphene, we employ an IL which serves not only as a green fluoride source for the crystallization of iron fluoride nanoparticles but also as a dispersant of GNSs. Owing to the electron transfer highways created between the nanoparticles and the GNSs, the iron fluoride/GNS hybrid cathodes exhibit a remarkable improvement in both capacity and rate performance (230 mAh g<sup>-1</sup> at 0.1 C and 74 mAh g<sup>-1</sup> at 40 C). The stable adhesion of iron fluoride nanoparticles on GNSs also introduces a significant improvement in long-term cyclic performance (115 mAh g<sup>-1</sup> after 250 cycles even at 10 C). The superior electrochemical performance of these iron fluoride/GNS hybrids as lithium ion battery cathodes is ascribed to the robust structure of the hybrid and the synergies between iron fluoride nanoparticles and graphene. © 2013 American Chemical Society.</p>

Identificador

http://pure.qub.ac.uk/portal/en/publications/an-in-situ-ionicliquidassisted-synthetic-approach-to-iron-fluoridegraphene-hybrid-nanostructures-as-superior-cathode-materials-for-lithium-ion-batteries(24be87a6-ee6c-4984-a943-d5d57051ffd4).html

http://dx.doi.org/10.1021/am400873e

http://www.scopus.com/inward/record.url?scp=84879098687&partnerID=8YFLogxK

Idioma(s)

eng

Direitos

info:eu-repo/semantics/restrictedAccess

Fonte

Li , B , Rooney , D W , Zhang , N & Sun , K 2013 , ' An in situ ionic-liquid-assisted synthetic approach to iron fluoride/graphene hybrid nanostructures as superior cathode materials for lithium ion batteries ' ACS Applied Materials and Interfaces , vol 5 , no. 11 , pp. 5057-5063 . DOI: 10.1021/am400873e

Palavras-Chave #graphene #high rate #ionic liquid #iron fluoride #lithium ion batteries #/dk/atira/pure/subjectarea/asjc/2500 #Materials Science(all)
Tipo

article