Energy storage study of trimetallic Cu2MSnS4 (M: Fe, Co, Ni) nanomaterials prepared by sequential crystallization method

A high energy flexible symmetric supercapacitor fabricated using N-doped activated carbon derived from palm flowers

“…Commonly used aqueous electrolytes have limitations in their working potentials which cannot go beyond water decomposition potential of 1.2 V which is a bottleneck for practical applications. Several attempts have been made with limited success to enhance the specific capacitance of materials by designing porous carbons, metal oxides/sulfides, and composite materials and also increasing the cell voltage by designing asymmetric device [15,19,46,[51][52][53]. Recently, organic electrolytes which are stable up to 2 to 3 V, and ionic liquids up to 5 V have been employed to improve the energy density of supercapacitors [54].…”

Quaternary Cu2FeSnS4/PVP/rGO Composite for Supercapacitor Applications

“…The CV profiles of Cu 2 FeSnS 4 explored the active redox pairs of Cu + /Cu 2+ , Fe 2+ /Fe 3+ , and Sn 2+ /Sn 4+ operating in a constant-potential window of OH anions in an alkaline electrolyte. 32 The electrochemical redox reaction occurs only when the electrons are transmitted from a Ni foam substrate that is oxidized to one that is being reduced. Almost all CV curves revealed similar patterns of current responses (redox peaks), while increasing the scan rate except for systematic anodic and cathodic shifts in the positive and negative directions, respectively, because of the fast Faradaic reaction.…”

“…20 The Cu 2 FeSnS 4 compound was formed by dissolving water in metal chlorides and precursors of thiourea, and necessary chemical reactions during the synthesis of materials are described. 32 , 36 …”

“…20 The Cu 2 FeSnS 4 compound was formed by dissolving water in metal chlorides and precursors of thiourea, and necessary chemical reactions during the synthesis of materials are described. 32 For electrochemical measurements and electrode preparations, Cu 2 FeSnS 4 (80%) was mixed with activated charcoal (10%), acetylene black (5%), polyvinylidene fluoride (PVDF) (5%), and solution of binder in N-methyl-2-pyrrolidone (NMP) on nickel foam. Filter paper soaked in 2 M potassium hydroxide was used as a separator.…”

“…Subsequently, the obtained Cu 2 FeSnS 4 , Cu 2 FeSnS 4 /PVP, and Cu 2 FeSnS 4 /PVP/rGO powders were given for characterization, and electrochemical performance was carried out for all samples . The Cu 2 FeSnS 4 compound was formed by dissolving water in metal chlorides and precursors of thiourea, and necessary chemical reactions during the synthesis of materials are described. , …”