Suitable Morphology Makes CoSn(OH)6 Nanostructure a Superior Electrochemical Pseudocapacitor

• DOI: 10.1021/acsami.6b02568
• Publication Date: 2016-06-27T13:12:53Z
• Authors: Ramkrishna Sahoo; Anup Kumar Sasmal; Chaiti Ray; Soumen Dutta; Anjali Pal; Tarasankar Pal
• Keywords: Pseudocapacitor; Nanomaterials; Specific energy

Morphology of a material with different facet, edge, kink, etc., generally influences the rate catalytic reaction.1,2 Herein, we account for importance altered morphology nanomaterial supercapacitor device and employed CoSn(OH)6 as an electrode material. Suitable fabrication stable aqueous asymmetric (AAS) using metal hydroxide positive can be beneficial if high energy density is derived without sacrificing power density. Here have synthesized uncommon hierarchical mesoporous nanostructured (HNS) to fabricate pseudocapacitor. In this endeavor, NH3 found well-suited hydrolyzing agent synthesis.3 Serendipitously, HNS was transformed into favored cubic nanostructure (CNS) in NaOH solution. solution, acts structure directing well etching agent. Both samples (HNS & CNS) were used pseudocapacitor electrodes KOH electrolyte independently, which reported first time. The exhibits very specific capacitance value (2545 F/g at 2.5 A/g current) better cyclic durability over CNS sample (851 current). To examine real cell application, activated carbon (AC) negative development (AAS). as-fabricated AAS exhibited 713 current 1.5 retained 92% even after 10 000 charge-discharge cycles. A maximum 63.5 Wh kg(-1) 5277 W ascertained from AAS, CoSn(OH)6//AC.