Cellulose-based novel hybrid polymer electrolytes for green and efficient Na-ion batteries. (20th August 2015)

• Record Type: Journal Article
• Authors: Colò, Francesca; Bella, Federico; Nair, Jijeesh R.; Destro, Matteo; Gerbaldi, Claudio
• Is Part Of: Electrochimica acta. Volume 174(2015)
• Page Start: 185
• Page End: 190
• Publication Date: 2015-08-20
• Subjects: poly(ethylene oxide) -- water based process -- cellulose -- solid polymer electrolyte -- sodium battery; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.05.178
• Languages: English
• ISSNs: 0013-4686

Abstract

Graphical abstract: Highlights: A novel cellulosic polymer electrolyte is proposed for Na-ion batteries. Green functional biopolymer is present both in solid electrolyte and electrode. Optimised electrode/electrolyte interface is obtained. Stable cycling in Na/TiO2 and Na/NaFePO4 cells at 55 °C. A simple, cheap and water-based approach for solid Na-ion polymer cells. Abstract: In the present work, a novel pyranose ring laden polymer electrolyte is proposed for all solid Na-ion secondary cells that can operate at moderate temperatures. The prepared fully solid polymer electrolyte film is based on a classic polyethylene oxide (PEO) backbone, homogeneously blended with sodium carboxymethyl cellulose (Na-CMC) and sodium perchlorate. The favourable use of Na-CMC as electrode binder as well as electrolyte additive is evaluated, which would enhance the pathways for forming an optimised electrode/electrolyte interface. The promising prospects of the newly elaborated hybrid electrolyte are investigated by means of galvanostatic charge/discharge cycling in lab-scale cell with TiO2 -based or NaFePO4 -based working electrodes.