Metal hydroxychloride for Superior Electrochemical Supercapacitors - Ranganatha, S.;Munichandraiah, N.
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Co2(OH)3Cl xerogel interconnected mesoporous structures have been prepared by a facile one pot sol-gel process and heat treated at 200 ºC and 400 ºC. All samples are studied for their morphology, structure and electrochemical stability upon cycling. The specific capacitance of the as-prepared Co2(OH)3Cl from single electrode study is 450 F/g, when the electrodes are cycled in 3 M KOH at a specific current 2 A/g. Interestingly, capacity retention after 500 and 1000 cycles is about 92% and 75%, respectively. Sample heated at 200 ºC exhibits 308 F/g at 2 A/g and that heated at 400 ºC shows only…mehr

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Produktbeschreibung
Co2(OH)3Cl xerogel interconnected mesoporous structures have been prepared by a facile one pot sol-gel process and heat treated at 200 ºC and 400 ºC. All samples are studied for their morphology, structure and electrochemical stability upon cycling. The specific capacitance of the as-prepared Co2(OH)3Cl from single electrode study is 450 F/g, when the electrodes are cycled in 3 M KOH at a specific current 2 A/g. Interestingly, capacity retention after 500 and 1000 cycles is about 92% and 75%, respectively. Sample heated at 200 ºC exhibits 308 F/g at 2 A/g and that heated at 400 ºC shows only 32 F/g at 0.2 A/g. With an increase in preparation temperature, amorphous Co2(OH)3Cl is converted to crystalline Co3O4 phases with lower electrochemical performance. With a significant specific capacity and electrochemical stability, the synthesized material is a novel potential candidate for supercapacitors.
Autorenporträt
À propos de l'auteurLe Dr S Ranganatha a obtenu son doctorat en chimie à l'Université Kuvempu, en Inde, en 2013. Il est actuellement affilié au département de chimie inorganique et physique de l'Indian Institute of Science dans le cadre de la prestigieuse bourse postdoctorale Dr D.S. Kothari de l'University Grant Commission. Il est membre à vie d'ECS India et de SAEST, CSIR-CECRI.