Flexible zinc ion hybrid supercapacitors enabled by N/S co-doped porous carbon and bacterial cellulose/ZnSO4 electrolyte

被引：12

作者：

Zhao, Junfeng ^{[1
,2
]}

Tang, Zhi ^{[1
]}

Wang, Zichen ^{[1
]}

Xi, Meiqi ^{[1
]}

Xie, Xuedong ^{[1
]}

Yang, Gang ^{[1
,2
]}

机构：

[1] Changshu Inst Technol, Sch Mat Engn, Changshu, Peoples R China

[2] Changshu Inst Technol, Suzhou Key Lab Funct Ceram Mat, Changshu, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2023年 / 656卷

关键词：

Zinc-ion hybrid supercapacitor; Porous carbon; Co-doping; Flexible electrolyte; HIGH-PERFORMANCE; ENERGY-STORAGE; POTASSIUM-ION; TIO2; ANATASE; CHALLENGES; METAL; ANODE; LIFE;

D O I：

10.1016/j.colsurfa.2022.130424

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Zinc-ion hybrid capacitors (ZHSCs), as a novel energy storage devices with battery type anode, capacitive type cathode, have attached widely attention. Herein, N, S co-doping porous carbon (NSC) is synthesized by a salt template assisted freeze drying method. Bacterial cellulose (BC)/ZnSO4 electrolyte is prepared by impregnating BC membrane into ZnSO4 solution. Thanks to significant cathode material, favorable flexible electrolyte system, and rational device design, the flexible Zn//BC/ZnSO4//NSC ZHSC device presents excellent electrochemical performance, including an excellent specific capacity of 113 mA h g-1 and a high energy density of 90.8 W h kg-1 at 0.5 A g-1, a superior cycling stability with excellent capacity retention of 93.9% over 10000 cycles at 5 A g-1. Impressively, NSC-6 based ZHSC device shows similar capacitive behavior under various bending states, demonstrating its excellent flexibility and stability. Overall, the ZHSC devices based on NSC cathode and BC/ ZnSO4 flexible electrolyte are promising to be applied in portable, flexible, and wearable electronics.

引用

页数：9