On November 30, 2021, my paper “Polydopamine Doping and Pyrolysis of Cellulose Nanofiber Paper for Fabrication of Three-Dimensional Nanocarbon with Improved Yield and Capacitive Performances” is published in Volume 11, Number 12 of Nanomaterials!
Polydopamine Doping and Pyrolysis of Cellulose Nanofiber Paper for Fabrication of Three-Dimensional Nanocarbon with Improved Yield and Capacitive Performances
L. Zhu* , K. Uetani, M. Nogi, H. Koga*
Abstract
Biomass-derived three-dimensional (3D) porous nanocarbons have attracted much attention due to their high surface area, permeability, electrical conductivity, and renewability, which are beneficial for various electronic applications, including energy storage. Cellulose, the most abundant and renewable carbohydrate polymer on earth, is a promising precursor to fabricate 3D porous nanocarbons by pyrolysis. However, the pyrolysis of cellulosic materials inevitably causes drastic carbon loss and volume shrinkage. Thus, polydopamine doping prior to the pyrolysis of cellulose nanofiber paper is proposed to fabricate the 3D porous nanocarbons with improved yield and volume retention. Our results show that a small amount of polydopamine (4.3 wt%) improves carbon yield and volume retention after pyrolysis at 700 °C from 16.8 to 26.4% and 15.0 to 19.6%, respectively. The pyrolyzed polydopamine-doped cellulose nanofiber paper has a larger specific surface area and electrical conductivity than cellulose nanofiber paper that without polydopamine. Owing to these features, it also affords a good specific capacitance up to 200 F g−1 as a supercapacitor electrode, which is higher than the recently reported cellulose-derived nanocarbons. This method provides a pathway for the effective fabrication of high-performance cellulose-derived 3D porous nanocarbons.
Outside front cover and hot paper, got!
On April 7, 2021, my paper “Pyrolyzed Chitin Nanofiber Paper as a Three-Dimensional Porous and Defective Nanocarbon for Optical Sensing and Energy Storage Applications” was published in Volume 9, Number 13 of Journal of Materials Chemistry C as hot paper with outside front cover!
L. Zhu, Y. Huang, Y. Morishita, K. Uetani, M. Nogi, H. Koga*, Journal of Materials Chemistry C, 9, 4444-4452 (2021)
This work was reported by lots of international media, including EurekAlert! (US), Phys.org (UK), Mirage News (Australia), pplware (Portugal) and The Science Times.
Searching below titles for more details.
- From dinner to sustainable electronics, the surprising versatility of crabs
- Making nanocarbon materials for sustainable electronics from crab shells
- Crab shells could help pave the way for sustainable electronics
- A New Use for Crab Shells: Chitin-Based mostly Nanocarbon for Sustainable Electronics
- Your next PC could be made of crabs
My paper has been accepted by Journal of Materials Chemistry C!
On February 8, 2021, my paper “Pyrolyzed Chitin Nanofiber Paper as a Three-Dimensional Porous and Defective Nanocarbon for Optical Sensing and Energy Storage Applications” was accepted for publication in Journal of Materials Chemistry C!
Pyrolyzed Chitin Nanofiber Paper as a Three-Dimensional Porous and Defective Nanocarbon for Photosensing and Energy Storage
L. Zhu, Y. Huang, Y. Morishita, K. Uetani, M. Nogi, H. Koga*
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