Journal
POLYMERS
Volume 13, Issue 13, Pages -Publisher
MDPI
DOI: 10.3390/polym13132137
Keywords
2D carbon materials; sodium-ion hybrid capacitor; potassium-ion hybrid capacitor; zinc-ion hybrid capacitor; challenges and prospects
Categories
Funding
- Australian Research Council [DE180101478, DP210102215]
- Australian Research Council [DE180101478] Funding Source: Australian Research Council
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The hybrid ion capacitor (HIC) combines the intercalation mechanism of a lithium-ion battery anode with the double-layer mechanism of the cathode, bridging the gap between batteries and supercapacitors. Two-dimensional (2D) carbon materials are promising candidates for hybrid capacitors due to their unique properties. This review discusses the role of 2D carbon in hybrid capacitors, recent progress in their application, and challenges in their future development.
The hybrid ion capacitor (HIC) is a hybrid electrochemical energy storage device that combines the intercalation mechanism of a lithium-ion battery anode with the double-layer mechanism of the cathode. Thus, an HIC combines the high energy density of batteries and the high power density of supercapacitors, thus bridging the gap between batteries and supercapacitors. Two-dimensional (2D) carbon materials (graphite, graphene, carbon nanosheets) are promising candidates for hybrid capacitors owing to their unique physical and chemical properties, including their enormous specific surface areas, abundance of active sites (surface and functional groups), and large interlayer spacing. So far, there has been no review focusing on the 2D carbon-based materials for the emerging post-lithium hybrid capacitors. This concept review considers the role of 2D carbon in hybrid capacitors and the recent progress in the application of 2D carbon materials for post-Li (Na+, K+, Zn2+) hybrid capacitors. Moreover, their challenges and trends in their future development are discussed.
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