Cu 4 SnS 4 -Functionalized Absorbent Pads-Derived Carbon as a Bifunctional Electrode for Supercapacitors and Hydrogen Evolution Reaction.
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| Title: | Cu 4 SnS 4 -Functionalized Absorbent Pads-Derived Carbon as a Bifunctional Electrode for Supercapacitors and Hydrogen Evolution Reaction. |
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| Authors: | Justinabraham, Romiyo1,2 (AUTHOR), Durairaj, Arulappan2,3,4,5 (AUTHOR), Luong, John H. T.3,6 (AUTHOR), Vasanthkumar, Samuel4,7 (AUTHOR), Maruthapandi, Moorthy4,5 (AUTHOR) |
| Source: | Nanomaterials (2079-4991). Jun2026, Vol. 16 Issue 12, p773. 17p. |
| Subjects: | Supercapacitors, Hydrogen evolution reactions, Energy storage, Copper sulfide, Carbon composites, Electrochemical apparatus, Organic wastes, Condensed matter |
| Abstract: | The conversion of bio-waste into functional energy materials provides a robust platform for addressing both environmental and energy challenges. In this paper, discarded absorbent pads are transformed into carbon-rich frameworks, which is followed by the fabrication of composites through the incorporation of Cu4SnS4 (CSS) for dual electrochemical applications. Integrating CSS into the waste-derived carbon matrix induces strong synergistic effects, improving electrical conductivity, increasing active-site availability, and accelerating charge-transfer kinetics. Comprehensive physicochemical analyses confirmed the successful formation of a well-integrated heterostructure composite with favorable structural and surface characteristics. Electrochemical evaluations further demonstrated that CSS-modified carbon exhibits superior bifunctional performance. In a two-electrode configuration, the composite delivers an energy density of 12.08 Wh kg−1 at a power density of 250 W kg−1 along with excellent cycling stability in supercapacitor applications. As an electrocatalyst, it achieves a low overpotential of 268 mV at −10 mA cm−2 and a small Tafel slope of 75 mV dec−1, reflecting efficient reaction kinetics. The strong durability observed in both systems underscores the structural integrity and long-term operational stability of the material. Overall, this paper advances a sustainable waste-to-resource strategy for fabricating multifunctional carbon-based composites, offering a promising platform for integrated energy-storage and hydrogen-generation technologies. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | The conversion of bio-waste into functional energy materials provides a robust platform for addressing both environmental and energy challenges. In this paper, discarded absorbent pads are transformed into carbon-rich frameworks, which is followed by the fabrication of composites through the incorporation of Cu4SnS4 (CSS) for dual electrochemical applications. Integrating CSS into the waste-derived carbon matrix induces strong synergistic effects, improving electrical conductivity, increasing active-site availability, and accelerating charge-transfer kinetics. Comprehensive physicochemical analyses confirmed the successful formation of a well-integrated heterostructure composite with favorable structural and surface characteristics. Electrochemical evaluations further demonstrated that CSS-modified carbon exhibits superior bifunctional performance. In a two-electrode configuration, the composite delivers an energy density of 12.08 Wh kg−1 at a power density of 250 W kg−1 along with excellent cycling stability in supercapacitor applications. As an electrocatalyst, it achieves a low overpotential of 268 mV at −10 mA cm−2 and a small Tafel slope of 75 mV dec−1, reflecting efficient reaction kinetics. The strong durability observed in both systems underscores the structural integrity and long-term operational stability of the material. Overall, this paper advances a sustainable waste-to-resource strategy for fabricating multifunctional carbon-based composites, offering a promising platform for integrated energy-storage and hydrogen-generation technologies. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 20794991 |
| DOI: | 10.3390/nano16120773 |
