Preparation of composite polymer electrolytes based on poly (ethylene oxide) and cellulose nanofiber for solid-state zinc-ion batteries

Name: Weeraporn Treerittiwittaya1 and

Organization : Chulalongkorn University. International Graduate Program of Nanoscience & Technology

Name: Jitti Kasemchainan

Organization : Chulalongkorn University. Faculty of Science

Email : jitti.k@chula.ac.th

keyword: Cellulose nanofibers

LCSH: Polyelectrolytes

LCSH: Zinc-ion batteries

LCSH: Solid-state batteries

Abstract: Recently, solid-state zinc-ion batteries (SSZIBs) based on polymer electrolytes have attracted increasing attention. Herein, composite solid polymer electrolytes (SPEs) are developed by incorporating polyethylene oxide (PEO) and zinc trifluoromethanesulfonate (Zn(OTf)2) into a cellulose nanofiber (CNF) matrix derived from biological sources, acting as reinforcing phase. The PEO/Zn(OTf)2/CNF composite with a 10 wt% CNF filling gave a high mechanical strength as evidenced by the Young's modulus of 601.39 MPa and the tensile strength of 36.22 MPa, which could be attributed to the continuous nanofiber network of CNF. Furthermore, the organic additive consisting of 0.5 M Zn(OTf)2 and fume silica was introduced onto the PEO/Zn(OTf)2/10%CNF electrolyte to enhance the ionic conductivity of 2.12 × 10-4 Sˑcm-1. After assembly of the symmetrical Zn/Zn cells using the composite polymer electrolyte, the constant-current cycling was performed and the resulting performance indicated that no short-circuiting was present as well as the zinc anode was favorable, ensuring sustained long-term stability (over 400 h) at a current density of 0.5 mAˑcm-2. As for the full-cell testing: Zn | PEO/Zn(OTf)2/10%CNF | δ-MnO2, it was achievable for a high reversible capacity of 142 mAhˑg−1 at a current density of 10 mAˑg−1 and a high coulombic efficiency of 97% after 50 cycles

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2024

Modified: 2024-11-29

Issued: 2024-11-29

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BibliograpyCitation : In Kasetsart University. Faculty of Science. The Pure and Applied Chemistry International Conference 2024 (PACCON 2024) (pp.411-415). Bangkok : Kasetsart University, 2024

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