Potassium-Ion Storage in Cellulose-Derived Hard Carbon: The Role of Functional Groups
Article
Nanjundan, Ashok, Gaddam, Rohit Ranganathan, Niaei, Amir H. Farokh, Annamalai, Pratheep K., Dubal, Deepak P., Martin, Darren James, Yamauchi, Yusuke, Searles, Debra J. and Zhao, Xiu Song. 2020. "Potassium-Ion Storage in Cellulose-Derived Hard Carbon: The Role of Functional Groups." Batteries & Supercaps. 3 (9), pp. 953-960. https://doi.org/10.1002/batt.202000116
Article Title | Potassium-Ion Storage in Cellulose-Derived Hard Carbon: The Role of Functional Groups |
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ERA Journal ID | 211856 |
Article Category | Article |
Authors | Nanjundan, Ashok, Gaddam, Rohit Ranganathan, Niaei, Amir H. Farokh, Annamalai, Pratheep K., Dubal, Deepak P., Martin, Darren James, Yamauchi, Yusuke, Searles, Debra J. and Zhao, Xiu Song |
Journal Title | Batteries & Supercaps |
Journal Citation | 3 (9), pp. 953-960 |
Number of Pages | 8 |
Year | 2020 |
Publisher | Wiley-VCH Verlag GmbH & Co. KGaA |
Place of Publication | Germany |
ISSN | 2566-6223 |
Digital Object Identifier (DOI) | https://doi.org/10.1002/batt.202000116 |
Web Address (URL) | https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/batt.202000116 |
Abstract | Potassium-ion storage is being explored by researchers for its advantages in forming graphite-based intercalation compounds, with cost-effective production compared to lithium-ion systems. However, its poor performance in graphite-based platforms, owing to the volume expansion required for intercalation, has demanded alternative materials for reversible potassiation. Herein, we demonstrate a simple one-step pyrolysis approach to develop an amorphous hard carbon material from commercial cellulose for high-performance potassium-ion batteries (KIB). The larger interlayer spacing (∼0.4 nm) alongside the electronegative oxygen functional groups promotes potassium-ion storage. High capacity, good rate and long cycling performance with lower-volume expansion could be credited to the amorphous carbon that possesses turbostratic nanodomains. Further, oxygen functional groups on the carbon material are identified in our experimental studies, and density functional theory simulations indicate that these are likely to enhance the potassium-ion capacity of the materials. |
Keywords | biomass |
ANZSRC Field of Research 2020 | 401605. Functional materials |
401703. Energy generation, conversion and storage (excl. chemical and electrical) | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
Queensland University of Technology | |
National Institute for Materials Science, Japan |
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