Journal article
Towards High-Energy-Density Pseudocapacitive Flowable Electrodes by the Incorporation of Hydroquinone
ChemSusChem, v 8(5), pp 835-843
29 Jan 2015
PMID: 25644511
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Our study reports an investigation of hydroquinone (HQ) as a multielectron organic redox molecule to enhance the performance of flowable electrodes. Moreover, two different methods to produce high-performance pseudocapacitive flowable electrodes were investigated for electrochemical flow capacitors. First, HQ molecules were deposited on carbon spheres (CSs) by a self-assembly approach using various HQ loadings. In the second approach, HQ was used as a redox-mediating agent in the electrolyte. Flowable electrodes composed of HQ showed a capacitance of 342 Fg 1, which is >200% higher than that of flowable electrodes based on nontreated CSs (160 Fg 1), and outperformed (in gravimetric performance) many reported film electrodes. A similar trend in capacitance was observed if HQ was used as a redox agent in the electrolyte; however, its poor cycle life restricted further consideration. Additionally, a twofold increase in capacitance was observed under flow conditions compared to that of previous studies.
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Details
- Title
- Towards High-Energy-Density Pseudocapacitive Flowable Electrodes by the Incorporation of Hydroquinone
- Creators
- M Boota - Drexel Univ., Philadelphia, PA (United States)K. B Hatzell - Drexel Univ., Philadelphia, PA (United States)E. C Kumbur - Drexel Univ., Philadelphia, PA (United States)Y Gogotsi - Drexel Univ., Philadelphia, PA (United States)
- Publication Details
- ChemSusChem, v 8(5), pp 835-843
- Publisher
- ChemPubSoc Europe; United States
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering; Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000350661600015
- Scopus ID
- 2-s2.0-84929996231
- Other Identifier
- 991014878003804721
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- Web of Science research areas
- Chemistry, Multidisciplinary
- Green & Sustainable Science & Technology