Journal
JOURNAL OF ENERGY STORAGE
Volume 42, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.est.2021.103018
Keywords
Polyaniline; Supercapacitors; Energy storage; Pseudocapacitance; Power density; Cycling ability
Categories
Funding
- Avos Labs
- Avos Labs energy and research initiative: Future Energy Manufacture
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This review discusses the recent advances in the design, fabrication processes, mechanism, and application of PANI-based supercapacitors with other electrochemically active carbon materials and some metals.
Renewable energy storage devices are being given their share of importance owing to the depletion of nonrenewable fossil fuel reserves. The supercapacitor is such an example of an energy storage device. The utilization of polyaniline (PANI) for energy storage application, either as a direct electroactive material or as a conducting agent is being widely explored in the last few decades. PANI is regarded as an exemplary electrode material due to its tunable pseudocapacitance owing to its variable oxidation state, superior theoretical capacitance, unchallenging fabrication, durable chemical stability, and reasonable cost. However, due to its considerable changes of dimensions during the release/doping of ions, low conductivity, and low surface area, pure PANI electrodes have low power density and poor mechanical properties. Nevertheless, its collaboration with materials having exquisite specific surface area, exposedness to active sites, porous structures, and good conductivity like those of carbon materials along with some metals might be a potent approach to the problem. In this review, the recent advances on design, fabrication processes, mechanism, and application of PANI based supercapacitors with other electrochemically active carbon materials along with some metals is discussed.
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