Preparation of Hierarchic Porous Films of α-MnO2 Nanoparticles by Using the Breath Figure Technique and Application for Hybrid Capacitor Electrodes

Nobuhiro Shimamura; Ryuji Kanda; Yuma Matsukubo; Yutaro Hirai; Hiroya Abe; Yuji Hirai; Tsukasa Yoshida; Hiroshi Yabu; Akito Masuhara

doi:10.1021/acsomega.8b03381

Preparation of Hierarchic Porous Films of α-MnO₂ Nanoparticles by Using the Breath Figure Technique and Application for Hybrid Capacitor Electrodes

ACS Omega. 2019 Feb 21;4(2):3827-3831. doi: 10.1021/acsomega.8b03381. eCollection 2019 Feb 28.

Authors

Nobuhiro Shimamura¹, Ryuji Kanda¹, Yuma Matsukubo¹, Yutaro Hirai², Hiroya Abe^{3

4}, Yuji Hirai¹, Tsukasa Yoshida¹, Hiroshi Yabu⁴, Akito Masuhara^{1

1}

Affiliations

¹ Graduate School of Science and Engineering, Faculty of Engineering, and Research Center for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan.
² Graduate School of Engineering, Tohoku University, 6-6, Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579, Japan.
³ Graduate School of Environmental Studies, Tohoku University, 468-1, Aramaki, Aza-Aoba, Aoba-Ku, Sendai 980-0845, Japan.
⁴ WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1, Katahira, Aoba-Ku, Sendai 980-8577, Japan.

Abstract

The honeycomb-structured film has advantages such as high wettability and high surface area. This structure and properties are suitable for the capacitor electrode. In this study, the electrode structure is controlled by the synthesis of MnO₂ nanoparticles using the breath figure method. The electrode performance was calculated by electrochemical measurements. As a result, the capacitance value was 100.5 F/g at 1 mV s^-1, which was improved 2.7 times as compared with that without structure control.