TY - JOUR
T1 - Pseudocapacitance of zeolite-templated carbon in organic electrolytes
AU - Nueangnoraj, Khanin
AU - Nishihara, Hirotomo
AU - Ishii, Takafumi
AU - Yamamoto, Norihisa
AU - Itoi, Hiroyuki
AU - Berenguer, Raúl
AU - Ruiz-Rosas, Ramiro
AU - Cazorla-Amorós, Diego
AU - Morallón, Emilia
AU - Ito, Masashi
AU - Kyotani, Takashi
N1 - Funding Information:
We thank Tokyo Sangyo Yoshi Co. Ltd., Kansai Coke and Chemicals Co., Ltd., and Kyraray Chemical Co. Ltd. for kindly supplying separators, MSC30, and YP-50F, respectively. 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 .
Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.
PY - 2015/11/1
Y1 - 2015/11/1
N2 - 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.
AB - 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.
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U2 - 10.1016/j.ensm.2015.08.003
DO - 10.1016/j.ensm.2015.08.003
M3 - Article
AN - SCOPUS:84945302552
SN - 2405-8297
VL - 1
SP - 35
EP - 41
JO - Energy Storage Materials
JF - Energy Storage Materials
ER -
