Fe-based nanocomposite as functional electrode for high performance supercapacitor and enhanced hydrogen production
발표자
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초록
내용
Vacancy engineering offers an attractive approach to improving the surface properties and electronic structure of transition metal nanomaterials. However, simple and cost-effective methods for introducing defects into nanomaterials still face great challenges. Herein, we propose a facile room temperature two-step technique that utilizes Fe as the dopant to enhance S vacancies in cobalt-based metal–organic frameworks (MOFs). The Fe–Co-MOF was converted into a hollow Fe–Co3S4 confined in CoMo2S4 to form Fe–Co3S4@CoMo2S4 nanosheets. The as-prepared material showed enhanced charge storage kinetics and excellent properties as an electrode material for supercapacitors. The obtained nanostructure displayed a high specific capacitance (980.3 F g−1 at 1 A g−1) and excellent cycling stability (capacity retention of 96.5% after 6000 cycles at 10 A g−1).