A Nanofibrillated Cellulose/Polyacrylamide Electrolyte-Based Flexible and Sewable High-Performance Zn-MnO2 Battery with Superior Shear Resistance

被引：238

作者：

Wang, Donghong ^{[1
]}

Li, Hongfei ^{[1
]}

Liu, Zhuoxin ^{[1
]}

Tang, Zijie ^{[1
]}

Liang, Guojin ^{[1
]}

Mo, Funian ^{[1
]}

Yang, Qi ^{[1
]}

Ma, Longtao ^{[1
]}

Zhi, Chunyi ^{[1
,2
]}

机构：

[1] City Univ Hong Kong, Dept Mat Sci & Engn, Kowloon, 83 Tat Chee Ave, Hong Kong 999077, Peoples R China

[2] City Univ Hong Kong, Chengdu Res Inst, Chengdu 610000, Sichuan, Peoples R China

来源：

SMALL | 2018年 / 14卷 / 51期

关键词：

nanofibrillated cellulose/polyacrylamide hydrogel; sewable battery; shear resistance; Zn-MnO2 aqueous battery; LITHIUM-ION BATTERY; ENERGY-STORAGE; CARBOXYMETHYL CELLULOSE; STABILITY; DEVICES; SAFETY; OXYGEN;

D O I：

10.1002/smll.201803978

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

There is a growing demand for flexible and wearable energy devices. How to enhance their tolerance to various mechanical stresses is a key issue. Bending, stretching, or twisting of flexible batteries has been widely researched. However, shear force is inevitably applied on the batteries during stretching, bending, and twisting. Unfortunately, thus far, research on analyzing shear resistance of solid batteries or even enhancing the shear tolerance has never been reported. Herein, a sewable Zn-MnO2 battery based on a nanofibrillated cellulose (NFC)/ployacrylamide (PAM) hydrogel, electrodeposited Zn nanoplates anode, and carbon nanotube (CNT)/alpha-MnO2 cathode is reported. The designed NFC/PAM hydrogel exhibits a relatively high mechanical strength with a large stretchability; the preformed NFC bone network stabilizes the large pores as channels for electrolyte diffusion. Furthermore, the effect of sewing on enhancing the shear resistance of the solid batteries is analyzed. The sewed Zn-MnO2 battery retains 88.5% of its capacity after 120 stitches, and withstands a large shear force of 43 N. The sewable and safe Zn-MnO2 is also able to be designed into a skirt and put on a toy as an energy source to power a red light emitting diode.

引用

页数：10

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