Uniform growth of Zn-Mn-Co ternary oxide nanoneedles for high-performance energy-storage applications

被引：102

作者：

Hussain, Iftikhar ^{[1
,4
]}

Mohamed, Saad G. ^{[2
]}

Ali, Awais ^{[1
]}

Abbas, Nadir ^{[3
]}

Ammar, Syed Muhammad ^{[4
]}

Al Zoubi, Wail ^{[5
]}

机构：

[1] Yeungnam Univ, Sch Chem Engn, Gyongsan 38541, Gyeongbuk, South Korea

[2] TIMS, Min & Met Engn Dept, Helwan 109, Cairo 11421, Egypt

[3] Univ Hail, Dept Chem Engn, Hail, Saudi Arabia

[4] Chonbuk Natl Univ, Jeonju 54896, Jeonbuk, South Korea

[5] Yeungnam Univ, Sch Mat Sci & Engn, Mat Electrochem Lab, Gyongsan 38541, South Korea

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2019年 / 837卷

基金：

新加坡国家研究基金会;

关键词：

Zn-Mn-Co ternary oxide; Binder-free; Synergistic effect; Nanoneedles; Hybrid supercapacitor device; SHELL NANOWIRE ARRAYS; BINDER-FREE ELECTRODES; NI-FOAM; COBALT OXIDE; NICKEL FOAM; CYCLING-STABILITY; SUPERCAPACITOR; NANOSHEETS; NANOFLAKES; COMPOSITE;

D O I：

10.1016/j.jelechem.2019.01.052

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

This paper reports the facile synthesis of a novel electrode material for high-performance supercapacitor. The binder-free Zn-Mn-Co ternary oxide nanoneedles with highly exposed active sites to electrolyte were examined by multiple characterizations. Zn-Mn-Co ternary oxide nanoneedle electrode exhibited a high specific capacity of 849 C g(-1) at a current density of 1 A g(-1) in three electrode measurements. Furthermore, it showed an excellent cycling stability after 8000 cycles and a very high coulombic efficiency. Moreover, hybrid supercapacitor device was assembled using Zn-Mn-Co ternary oxide nanoneedles as a positive electrode and activated carbon as a negative electrode. The hybrid supercapacitor device showed a high specific capacity of 158 C g(-1) at a current density of 1 A g(-1). The device delivered a high energy density of 35.5 W h kg(-1) and a high power density of 7.5 kW kg(-1). Interestingly, the hybrid supercapacitor device showed 100% initial capacitance retention over 7000 cycles. All these attractive results demonstrate the importance of this electrode material towards practical application.

引用

页码：39 / 47

页数：9

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