Development of High-Tech Battery (Supercapacitor)/Cellulose Nanofiber (CNF)-Based Battery Storage Discovery of Supercapacitor, a physical high-performance electron adsorbent created using amorphous cellulose nanofibers.

https://www.tohoku.ac.jp/japanese/2021/03/press20210323-04-cnf.html

Development of Battery Storages by Cellulose Nanofiber (CNF) Discovery of Physical High Performance Electron Adsorbent and Capacitor Created by Using Amorphous Cellulose Nanofibers.

March 23, 2021 14:00 | Press Release / Research Achievement

Researcher Information

0Affiliation, Position, and Name of the University's Representative: Research Fellow Mikio Fukuhara, Joint Research Center for Advanced Science and Technology

Researcher Profile

Key Points of the Announcement

Discovery of a strong energy storage effect in CNFs for the first time in the world

Succeeded in developing the world's first dry-type, lightweight supercapacitor by creating nano-sized concavo-convex surfaces with controlled CNF surface morphology

Use of nano-sized CNFs dramatically improves the amount of electrons adsorbed

Outline

Wood, the raw material of CNF, is expected to be an ace material for the earth's regeneration of carbon-neutral materials, but its application is currently limited to mechanical, chemical, and medical fields.

A research group led by Research Fellow Mikio Fukuhara and Director Fumihiko Hasegawa of the New Industry Creation Hatchery Center, Tohoku University, Professor Toshiyuki Hashida of the Research Center for Advanced Materials and Strength Science, Graduate School of Engineering, Professor Nobuhisa Fujima of Shizuoka University, Professor Mitsuhiro Takeda of Sendai National College of Technology, and CNF, Research and Development Division, Nippon Paper Industries Co. Research Laboratory of the Research and Development Division of Nippon Paper Industries, Ltd. have jointly discovered for the first time in the world that CNF has a strong energy storage effect, and have succeeded for the first time in the world in developing a dry and lightweight supercapacitor by creating nano-sized concavo-convex surfaces with controlled CNF surface shape.

Since no electrolyte is used in the constituent materials at all, it features a wide range of operating temperatures and high voltage resistance (~400V). Short-time voltage charging is now possible, and the possibility of charging from the air or in a vacuum has also emerged. In addition, the use of nanosize diameter CNFs has opened up the possibility of large-capacity power storage, and is expected to lead the world in the development of "paper electronics.

In the future, NEMS (nano-electromechanical system) processing technology will be introduced to integrate and stack the materials to improve their power and energy density as energy storage materials for weak electric power.

The results of this research were published online in Scientific Reports in Spring-Nature on March 19, 2021 (https://doi.org/10.1038/s41598-021-85901-3).

Fig. 1 Nano-convex surface of CNF adsorbent surface

Details (press release text) PDF

For inquiries, please contact

Research Center for New Industry and Innovation, Tohoku University

Research Fellow Mikio Fukuhara

Phone: 080-1069-4789

E-mail: mikio.fukuhara.b2*tohoku.ac.jp (replace * with @)