Facile Preparation of Carbon Nanotubes/Cellulose Nanofibrils/Manganese Dioxide Nanowires Electrode for Improved Solid-Sate Supercapacitor Performances

Siew Xian Chin; Kam Sheng Lau; Riski Titian Ginting; Sin Tee Tan; Poi Sim Khiew; Chin Hua Chia; Chatchawal Wongchoosuk

doi:10.3390/polym15183758

Facile Preparation of Carbon Nanotubes/Cellulose Nanofibrils/Manganese Dioxide Nanowires Electrode for Improved Solid-Sate Supercapacitor Performances

Polymers (Basel). 2023 Sep 14;15(18):3758. doi: 10.3390/polym15183758.

Authors

Siew Xian Chin^{1

2}, Kam Sheng Lau³, Riski Titian Ginting^{4

5}, Sin Tee Tan⁶, Poi Sim Khiew⁷, Chin Hua Chia³, Chatchawal Wongchoosuk¹

Affiliations

¹ Department of Physics, Faculty of Science, Kasetsart University, Chatuchak, Bangkok 10900, Thailand.
² ASASIpintar Program, Pusat GENIUS@Pintar Negara, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia.
³ Materials Science Program, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia.
⁴ Department of Electrical Engineering, Universitas Prima Indonesia, Medan 20118, North Sumatra, Indonesia.
⁵ Nanomaterials for Renewable Energy (NRE) Laboratory, Medan 20133, North Sumatra, Indonesia.
⁶ Department of Physics, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
⁷ Center of Nanotechnology and Advanced Materials, Faculty of Engineering, University of Nottingham Malaysia Campus, Jalan Broga, Semenyih 43500, Selangor, Malaysia.

Abstract

Wearable energy storage devices require high mechanical stability and high-capacitance flexible electrodes. In this study, we design a flexible supercapacitor electrode consisting of 1-dimensional carbon nanotubes (CNT), cellulose nanofibrils (CNF), and manganese dioxide nanowires (MnO₂ NWs). The flexible and conductive CNT/CNF-MnO₂ NWs suspension was first prepared via ultrasonic dispersion approach, followed by vacuum filtration and hot press to form the composite paper electrode. The morphological studies show entanglement between CNT and CNF, which supports the mechanical properties of the composite. The CNT/CNF-MnO₂ NWs electrode exhibits lower resistance when subjected to various bending angles (-120-+120°) compared to the CNT/CNF electrode. In addition, the solid-state supercapacitor also shows a high energy density of 38 μWh cm^-2 and capacitance retention of 83.2% after 5000 cycles.

Keywords: MnO2 nanowires; cellulose nanofibrils; paper electrode; supercapacitor.

Abstract

Grants and funding