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Title: Pseudocapacitive conjugated polyelectrolyte/2D electrolyte hydrogels with enhanced physico-electrochemical properties
Authors: Quek, Glenn
Su, Yude
Donato, Ricardo K.
Vázquez, Ricardo J.
Marangoni, Valeria S.
Ng, Pei Rou
Costa, Mariana C. F.
Kundukad, Binu
Novoselov, Konstantin S.
Neto, Antonio H. Castro
Bazan, Guillermo C.
Keywords: Science::Chemistry
Issue Date: 2022
Source: Quek, G., Su, Y., Donato, R. K., Vázquez, R. J., Marangoni, V. S., Ng, P. R., Costa, M. C. F., Kundukad, B., Novoselov, K. S., Neto, A. H. C. & Bazan, G. C. (2022). Pseudocapacitive conjugated polyelectrolyte/2D electrolyte hydrogels with enhanced physico-electrochemical properties. Advanced Electronic Materials, 8(5), 2100942-.
Project: R143-000-A97-133 
Journal: Advanced Electronic Materials 
Abstract: Conducting polymer hydrogels (CPHs) are an attractive class of materials that synergize the electrical properties of organic semiconductors with the physical properties of hydrogels. Of particular interest is the implementation of CPHs as electrode materials for electrochemical energy storage by taking advantage of redox-tunable conjugated backbones and the large electroactive surface area. Herein, the use of 2D electrolytes as an effective post-polymerization additive to enhance the pseudocapacitive performance of CPHs, is demonstrated. By using the self-doped conjugated polyelectrolyte CPE-K hydrogel as a model system, improvements in cycling stability, specific capacitance and working voltage window upon addition of the 2D electrolytes, are shown. Furthermore, positively charged 2D electrolytes to be more effective than their negatively charged counterparts are revealed. Rheology measurements and SEM imaging indicate that the 2D electrolytes serve as non-covalent cross-linkers that help in forming a mechanically more robust and highly percolated conducting network. These results provide a new and simple to execute post-polymerization strategy to optimize the electrochemical performance of CPH-based pseudocapacitors.
ISSN: 2199-160X
DOI: 10.1002/aelm.202100942
Rights: © 2022 Wiley-VCH GmbH. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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