材料科学
超级电容器
循环伏安法
氧化物
介电谱
储能
电极
扫描电子显微镜
煅烧
电化学
化学工程
纳米技术
分析化学(期刊)
复合材料
化学
冶金
功率(物理)
物理
生物化学
物理化学
量子力学
色谱法
工程类
催化作用
作者
Muhammad Faheem Maqsood,Umar Latif,Zulfqar Ali Sheikh,Muhammad Abubakr,Shania Rehman,Karim Khan,Muhammad Asghar Khan,Honggyun Kim,Mohamed Ouladsmane,Malik Abdul Rehman,Deok‐kee Kim,Muhammad Farooq Khan
标识
DOI:10.1016/j.inoche.2023.111487
摘要
Recently, the development of multiple functional energy storage materials having high energy storage capacity, expanded stability, and cost-effectiveness with eco-friendly nature is primary choice. Bi2Sr2Co2Oy (BSC-222) is misfit-layered oxide having significant thermoelectric (TE) capability with high temperature stability and eco-friendly characteristics. In present work, we successfully synthesized misfit layered BSC-222 oxide by using sol–gel method. X-ray diffraction, scanning electron microscopy, and atomic force microscopy are used to describe the structure and morphology of calcined BSC-222. Average thickness of prepared oxide sheets was found to be ∼30 to ∼40 nm. By using cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance spectroscopy (EIS) in 3 M KOH, the electrochemical analysis of produced BSC-222 electrodes was carried out. The CV and GCD analysis showed that the BSC-222 oxide having high secondary cobaltite phases has better charge storage capacity (166.6C × g−1) at 2 mVs−1 and majorly charge is stored through diffusion-controlled charge storage mechanism. A chemical reactions schematic is proposed for the charge storage mechanism. Moreover, this calcined BSC-222 exhibits better cycling stability of 68.8 % up to 5000 GCD cycles at 1.5 Ag−1 current density. Hence, BSC-222 misfit layered oxide demonstrates that it has capability to store charge with its good TE ability. This present work provides the first step towards utilizing good TE misfit layered materials even after some doping or modulation in their structure to fabricate high energy density energy storage devices with multifunctional characteristics.
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