Pseudocapacitance of zeolite-templated carbon in organic electrolytes

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Title: Pseudocapacitance of zeolite-templated carbon in organic electrolytes
Authors: Nueangnoraj, Khanin | Nishihara, Hirotomo | Ishii, Takafumi | Yamamoto, Norihisa | Itoi, Hiroyuki | Berenguer Betrián, Raúl | Ruiz-Rosas, Ramiro | Cazorla-Amorós, Diego | Morallon, Emilia | Ito, Masashi | Kyotani, Takashi
Research Group/s: Electrocatálisis y Electroquímica de Polímeros | Materiales Carbonosos y Medio Ambiente
Center, Department or Service: Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Pseudocapacitance | Zeolite-templated carbon | Organic electrolytes
Knowledge Area: Química Física | Química Inorgánica
Issue Date: Nov-2015
Publisher: Elsevier
Citation: Energy Storage Materials. 2015, 1: 35-41. doi:10.1016/j.ensm.2015.08.003
Abstract: Carbon and graphene-based materials often show some amount of pseudocapacitance due to their oxygen-functional groups. However, such pseudocapacitance is generally negligible in organic electrolytes and has not attracted much attention. In this work, we report a large pseudocapacitance of zeolite-templated carbon (ZTC) based on the oxygen-functional groups in 1 M tetraethylammonium tetrafluoroborate dissolved in propylene carbonate (Et4NBF4/PC). Due to its significant amount of active edge sites, a large amount of redox-active oxygen functional groups are introduced into ZTC, and ZTC shows a high specific capacitance (330 F g−1). Experimental results suggest that the pseudocapacitance could be based on the formation of anion and cation radicals of quinones and ethers, respectively. Moreover, ZTC shows pseudocapacitance also in 1 M lithium hexafluorophosphate dissolved with a mixture of ethylene carbonate and diethyl carbonate (LiPF6/EC+DEC) which is used for lithium-ion batteries and lithium-ion capacitors.
Sponsor: This research was partially supported by the Strategic International Cooperative Program, Japan Science and Technology Agency (T.K.); a Grant-in-Aid for Scientific Research (A), 15H01999 (T.K.); a Grant-in-Aid for Scientific Research (B), 26286020 (H.N.); and the Spanish MINECO, FEDER funds (Project MAT2013-42007-P and PRI-PIBJP-2011-0766). This research was supported also by Nano-Macro Materials, Devices and System Research Alliance and by Network Joint Research Center for Materials and Devices.
ISSN: 2405-8297
DOI: 10.1016/j.ensm.2015.08.003
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2015 Elsevier B.V.
Peer Review: si
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Appears in Collections:INV - GEPE - Artículos de Revistas
INV - MCMA - Artículos de Revistas

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