Konjac glucomannan derived biodegradable superionic solid-state electrolyte films for devising economically viable supercapacitor
Sushant
Wakekar, 
a
Laxmi
Pasupuleti,
a
Pardha Saradhi
Maram,
a
Maheswaran
Shanmugam,
b
Laxmi Narayana
Patro
c
and
Chinmoy
Das
*a
a
Laxmi
Pasupuleti,
a
Pardha Saradhi
Maram,
a
Maheswaran
Shanmugam,
b
Laxmi Narayana
Patro
c
and
Chinmoy
Das
*a
Abstract
We synthesized biodegradable and economically viable solid-state electrolyte films based on konjac glucomannan (KG) and sodium iodide (NaI). Among the KGNaI-x (x = 31–69 wt%) films, KGNaI-69 exhibits superior flexibility, biodegradability, and sodium superionic conductivity of 77.9 mS cm−1. The KGNaI-69-based supercapacitor delivers outstanding electrochemical efficiency and cycling stability, retaining 84.4% capacitance after 5000 cycles establishing its potentiality toward flexible energy storage devices.
- This article is part of the themed collection: 2025 Emerging Investigators
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