Solution processed nanostructured cerium oxide electrode: Electrochemical engineering towards solid-state symmetric supercapacitor device

被引：69

作者：

Pandit, Bidhan ^{[1
]}

Kumar, Nitish ^{[1
]}

Koinkar, Pankaj M. ^{[2
]}

Sankapal, Babasaheb R. ^{[1
]}

机构：

[1] Visvesvaraya Natl Inst Technol, Dept Phys, Nano Mat & Device Lab, South Ambazari Rd, Nagpur 440010, Maharashtra, India

[2] Tokushima Univ, Dept Opt Sci, 2-1 Minamijosanjima Cho, Tokushima 7708506, Japan

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2019年 / 839卷

关键词：

Cerium oxide; Energy storage; Supercapacitor; Symmetric device; HIGH-PERFORMANCE; ASYMMETRIC SUPERCAPACITORS; NANOWIRE ARRAYS; THIN-FILM; CARBON; COMPOSITE; CEO2; NANOCOMPOSITE; DESIGN; FIBER;

D O I：

10.1016/j.jelechem.2019.02.047

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Present work portrays the surface morphology dependent electrochemical behaviors tuned by annealing the chemical bath deposited (CBD) cerium oxide electrodes. The altered nanostructure properties are well-supported by in-depth structural and morphological analysis. Cerium oxide electrode annealed at 200 degrees C exhibits good surface properties enabling maximum electro-active porous cavities to penetrate electrolyte ions towards enhanced electron transfer. Consequently, the electrode exhibits maximum specific capacitance of 750 F/g with remarkably stable charge-discharge cycles. Fabricated symmetric solid-state supercapacitor device impressively expands potential window to 1.2 V with the aid of PVA-LiClO4 gel electrolyte with a peak specific capacitance of 321.3 F/g with top-up of 61.4 Wh/kg specific energy. The series combination of two devices confirms the strong energy storage ability by glowing 'VNIT' acronym designed through 21 red LEDs from the practical point of view.

引用

页码：96 / 107

页数：12

共 78 条

[1] Design of a High Performance Thin All-Solid-State Supercapacitor Mimicking the Active Interface of Its Liquid-State Counterpart [J].