Highly conducting corn starch doped ionic liquid solid polymer electrolyte for energy storage devices

Author:

Konwar Subhrajit1ORCID,Singh Abhimanyu1ORCID,Singh Pramod K1,Singh Ram Chandra1,Rawat Suneyana1,Dhapola Pawan Singh1,Agarwal Daksh23,Yahya MZA4

Affiliation:

1. Center for Solar Cells and Renewable Energy, Department of Physics, Sharda University, Greater Noida, India

2. Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, USA

3. Currently at Research Corporation, Fremont, CA, USA

4. Faculty of Defence Science and Technology, Universiti Pertahanan Nasional Malaysi, Kuala Lumpur, Malaysia

Abstract

In this study, a new biopolymer electrolyte (BPE) is successfully developed using corn starch complexed with ammonium iodide (NH4I) as host, and low viscosity ionic liquid 1-Ethyl, 3-Methyl Imidazolium Thiocyanate (EMImSCN), as a plasticizer. This ionic liquid doped BPE shows high ionic conductivity of the order 10−4 S/cm and electrochemical stability window more than 3 V, which is suitable for electrochemical application. The ionic transference number (tion) of 0.98 confirms the system to be predominantly ionic in nature. Fourier transform infrared spectroscopy (FTIR) shows complex nature, while polarized optical microscopy (POM) gives us an idea about the semi-crystalline nature of BPE. Maximum conducting ionic liquid doped BPE sandwiched electric double layer capacitor (EDLC) and dye sensitize solar cell (DSSC) shows efficient performance.

Funder

Acknowledgment The authors would like to acknowledge support received from Sharda University and Universiti Pertahanan Nasional Malaysia

Publisher

SAGE Publications

Subject

Materials Chemistry,Organic Chemistry,Polymers and Plastics

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