Related Experiment Video
Updated: Mar 18, 2026
11:26
Towards Biomimicking Wood: Fabricated Free-standing Films of Nanocellulose, Lignin, and a Synthetic Polycation
Published on: June 17, 2014
17.2K
Functionalized Nanocellulose-Integrated Heterolayered Nanomats toward Smart Battery Separators
Jung-Hwan Kim1, Minsu Gu1, Do Hyun Lee1
1Department of Energy Engineering, School of Energy and Chemical Engineering and ‡Department of Chemistry, School of Natural Science, Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919, Republic of Korea.
Nano Letters
|July 8, 2016
Summary
Researchers developed a novel green battery separator using nanocellulose. This advanced membrane enhances high-temperature cycling performance by mitigating adverse effects in energy storage systems.
Area of Science:
- Materials Science
- Electrochemistry
- Green Chemistry
Background:
- Energy storage systems require advanced separator membranes.
- Natural resource-derived materials offer sustainable alternatives.
- Current separators face limitations in high-temperature performance.
Purpose of the Study:
- To develop a novel nanocellulose-mediated green battery separator.
- To enhance the high-temperature cycling performance of energy storage devices.
- To address Mn(2+)-induced adverse effects in battery operation.
Main Methods:
- Fabrication of a heterolayered nanomat membrane with hierarchical/asymmetric porosity.
- Utilizing terpyridine (TPY)-functionalized cellulose nanofibril (CNF) as the top layer.
- Employing polyvinylpyrrolidone (PVP)/polyacrylonitrile (PAN) as the support layer.
- Designing pore structure to balance leakage current and ion transport.
Main Results:
- The heterolayered membrane exhibits synergistic chemical functionalities.
- TPY chelates Mn(2+) ions, and PVP captures hydrofluoric acid.
- Suppression of Mn(2+)-induced adverse effects was achieved.
- Substantial improvement in high-temperature cycling performance was observed.
Conclusions:
- The nanocellulose-mediated green material strategy is effective for smart battery separators.
- The developed membrane offers superior performance beyond current state-of-the-art.
- This approach paves the way for advanced and sustainable energy storage solutions.
