On-Chip Micro-Pseudocapacitors for Ultrahigh Energy and Power Delivery

Jiuhui Han; Yu-Ching Lin; Luyang Chen; Yao-Chuan Tsai; Yoshikazu Ito; Xianwei Guo; Akihiko Hirata; Takeshi Fujita; Masayoshi Esashi; Thomas Gessner; Mingwei Chen

doi:10.1002/advs.201500067

On-Chip Micro-Pseudocapacitors for Ultrahigh Energy and Power Delivery

Adv Sci (Weinh). 2015 Apr 2;2(5):1500067. doi: 10.1002/advs.201500067. eCollection 2015 May.

Authors

Affiliations

¹ WPI Advanced Institute for Materials Research Tohoku University Sendai 980-8577 Japan.
² WPI Advanced Institute for Materials Research Tohoku University Sendai 980-8577 Japan; MEMSCORE Cooperation Sendai 981-3206 Japan.
³ WPI Advanced Institute for Materials Research Tohoku University Sendai 980-8577 Japan; Micro System Integration Center Tohoku University Sendai 980-0845 Japan.
⁴ WPI Advanced Institute for Materials Research Tohoku University Sendai 980-8577 Japan; Fraunhofer Institute for Electronic Nano Systems Chemnitz 09126 Germany.
⁵ WPI Advanced Institute for Materials Research Tohoku University Sendai 980-8577 Japan; State Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai 200030 P. R China; CRESTJST 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan.

Abstract

Microscale supercapapcitors based on hierarchical nanoporous hybrid electrodes consisting of 3D bicontinuous nanoporous gold and pseudocapacitive manganese oxide deliver an excellent stack capacitance of 99.1 F cm^-3 and a high energy density of 12.7 mW h cm^-3 with a retained high power density of 46.6 W cm^-3.

Keywords: energy storage; manganese oxide; microdevice; nanoporous gold; supercapacitor.