Low temperature synthesis of crystalline pyrite FeS2 for high energy density supercapacitors

Herein, we report a low-temperature synthesis of crystalline pyrite-FeS2 through a solid-state annealing route, which was achieved using FeOOH, a metastable precursor, in the presence of H2S gas. The as-synthesized pyrite FeS2 was employed as an electrode for fabricating high energy density supercap...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2023-07, Vol.59 (60), p.9263-9266
Main Authors: Vishwanathan, Savithri, H S S Ramakrishna Matte
Format: Article
Language:English
Subjects:
Hydrogen sulfide
Low temperature
Pyrite
Supercapacitors
Synthesis
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Summary:Herein, we report a low-temperature synthesis of crystalline pyrite-FeS2 through a solid-state annealing route, which was achieved using FeOOH, a metastable precursor, in the presence of H2S gas. The as-synthesized pyrite FeS2 was employed as an electrode for fabricating high energy density supercapacitors. The device delivered a high specific capacitance of 51 mF cm−2 at 20 mV s−1 and showed a superior energy density of 30 μW h cm−2 at a power density of 1.5 mW cm−2.
ISSN:1359-7345
1364-548X
DOI:10.1039/d3cc02153j