Arulraj Arunachalam, Ilayaraja N, Rajeshkumar V, Ramesh M
Department of Physics, University College of Engineering - Bharathidasan Institute of Technology (BIT) campus, Anna University, Tiruchirappalli, India.
Functional Materials Division, CSIR- Central Electrochemical Research Institute (CECRI), Karaikudi, India.
Sci Rep. 2019 Jul 12;9(1):10108. doi: 10.1038/s41598-019-46583-0.
A facile approach of chemical bath deposition was proposed to fabricate direct synthesis of silver sulphide (AgS) on nickel (Ni) mesh without involvement for binders for supercapacitor electrodes. The phase purity, structure, composition, morphology, microstructure of the as-fabricated AgS electrode was validated from its corresponding comprehensive characterization tools. The electrochemical characteristics of the AgS electrodes were evaluated by recording the electrochemical measurements such as cyclic voltammetry and charge/discharge profile in a three electrode configuration system. AgS employed as working electrode demonstrates notable faradaic behaviour including high reversible specific capacitance value of 179 C/g at a constant charge/discharge current density of 1 A/g with high cyclic stability which is relatively good as compared with other sulphide based materials. The experimental results ensure fabricated binder-free AgS electrodes exhibits better electrochemical performance and suitable for potential electrodes in electrochemical energy storage applications.
提出了一种简便的化学浴沉积方法，用于在镍（Ni）网上直接合成硫化银（AgS），而无需使用用于超级电容器电极的粘合剂。通过相应的综合表征工具验证了所制备的AgS电极的相纯度、结构、组成、形态和微观结构。通过在三电极配置系统中记录循环伏安法和充放电曲线等电化学测量来评估AgS电极的电化学特性。用作工作电极的AgS表现出显著的法拉第行为，包括在1 A/g的恒定充放电电流密度下具有179 C/g的高可逆比电容值，并且具有高循环稳定性，与其他硫化物基材料相比相对较好。实验结果表明，所制备的无粘合剂AgS电极具有更好的电化学性能，适用于电化学储能应用中的潜在电极。
