Journal
POLYMERS
Volume 11, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/polym11101648
Keywords
binder; charge propagation; eco-friendly; energy storage
Categories
Funding
- European Commission (EC) within the ERC-StG-2017 project under the European Union's Horizon 2020 research and innovation programme [759603]
- Polish Ministry of Science and Higher Education [03/31/SBAD/0383]
- European Research Council (ERC) [759603] Funding Source: European Research Council (ERC)
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This work describes the use of commercially available starch as a binder for the preparation of conductive glue and electrode materials. It is demonstrated that starch can be successfully implemented as a binder in energy storage systems with non-aqueous electrolytes. These devices are characterized by a stable cycle life (for 50,000 cycles) at a nominal voltage of 2.5 V. Moreover, the use of starch-based conductive glue improves the electrochemical performance, especially reducing the internal resistance of the device. Starch-bound electrodes display lower equivalent distributed resistance (EDR) values than electrodes using carboxymethylcellulose (CMC) as the binder. This is due to the noticeably lower pore clogging by starch. An electric double-layer capacitor (EDLC) in organic electrolyte (1 mol L-1 TEABF(4) in ACN) at a nominal voltage of 2.5 V can reach a specific power and energy of 100 kW kg(-1) and 12 Wh kg (-1), respectively. This study shows that starch-based conductive glues and electrode materials can be incorporated in EDLC systems.
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