Catalyst free approach for the fabrication of CoN//Zn3N2 asymmetric configuration for highly efficient flexible supercapacitor

被引：34

作者：

Adalati, Ravikant ^{[1
]}

Kumar, Ashwani ^{[1
]}

Sharma, Meenakshi ^{[1
,2
]}

Tiwari, Pranjala ^{[1
]}

Chandra, Ramesh ^{[1
]}

机构：

[1] Indian Inst Technol Roorkee, Inst Instrumentat Ctr, Thin Film Lab, Roorkee 247667, Uttar Pradesh, India

[2] Indian Inst Technol Roorkee, Ctr Nanotechnol, Roorkee 247667, Uttar Pradesh, India

来源：

APPLIED PHYSICS LETTERS | 2020年 / 117卷 / 12期

关键词：

HIGH-PERFORMANCE; ZINC NITRIDE; BINDER FREE; ELECTRODE; NANOWIRES; NANOSHEETS; CARBIDE; ARRAYS;

D O I：

10.1063/5.0019483

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This report presents a single-step deposition of crystalline and catalyst-free cobalt nitride (CoN) and zinc nitride (Zn3N2) electrodes on a flexible current collector for highly efficient flexible supercapacitors. These proposed electrodes take full advantage of mechanical strength, electrochemical stability, and tremendous electrical conductivity with excellent adhesion to a flexible current collector and show high capacitive performance with outstanding cyclic life. The asymmetric supercapacitor (ASC) was constructed using CoN as a negative electrode and Zn3N2 as a positive electrode, assembled with 1 M Na2SO4 aqueous electrolyte soaked Whatman filter paper as the separator. This ASC exhibits a wider voltage window (up to 2V), good capacitance (75.4 Fg(-1)), and high specific energy (42 Wh kg(-1)) with good capacitance retention (93.6% for the flat cell and 80.1% for the 80 degrees bend cell) over 5000 charging discharging cycles. Therefore, this design of ASC potentially expands the performance of high frequency and flexible electronics.

引用

页数：5

共 42 条

[1] A High-Performing Asymmetric Supercapacitor of Molybdenum Nitride and Vanadium Nitride Thin Films as Binder-Free Electrode Grown through Reactive Sputtering [J].