scholarly journals Co3O4 Nanoneedle Array Grown on Carbon Fiber Paper for Air Cathodes towards Flexible and Rechargeable Zn–Air Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3321
Author(s):  
Ziyuan Li ◽  
Wenjia Han ◽  
Peng Jia ◽  
Xia Li ◽  
Yifei Jiang ◽  
...  

An economical and efficient method is developed for preparing flexible cathodes. In this work, a dense mesoporous Co3O4 layer was first hydrothermally grown in situ on the surface of chopped carbon fibers (CFs), and then carbon fiber paper (Co3O4/CP) was prepared by a wet papermaking process as a flexible zinc-air battery (ZAB). The high-performance air cathode utilizes the high specific surface area of a single chopped carbon fiber, which is conducive to the deposition and adhesion of the Co3O4 layer. Through the wet papermaking process, Co3O4/CP has ultra-thin, high mechanical stability and excellent electrical conductivity. In addition, the assembled ZAB exhibits relatively excellent electrochemical performance, with a continuous cycle of more than 180 times at a current density of 2 mA·cm−2. The zinc-air battery can maintain a close fit and work stably and efficiently even under high bending conditions. This process of combining single carbon fibers to prepare ultra-thin, high-density, high-conductivity carbon fiber paper through a papermaking process has huge application potential in the field of flexible wearables.

2013 ◽  
Vol 1 (34) ◽  
pp. 9630 ◽  
Author(s):  
Montree Sawangphruk ◽  
Montakan Suksomboon ◽  
Kawita Kongsupornsak ◽  
Jakkrit Khuntilo ◽  
Pattarachai Srimuk ◽  
...  

2018 ◽  
Vol 233 ◽  
pp. 278-281 ◽  
Author(s):  
Sicong Tan ◽  
Jiajia Li ◽  
Lijie Zhou ◽  
Peng Chen ◽  
Zhaoyang Xu

Author(s):  
Ali N. Sarvestani ◽  
Nekoda van de Werken ◽  
Pouria Khanbolouki ◽  
Mehran Tehrani

Additively manufactured polymers can be reinforced with high-performance reinforcements such as carbon fibers. Printed thermoplastics with embedded continuous carbon fibers are up to two orders of magnitude stronger and stiffer than high-grade 3D printed polymers. In this work, the mechanical response of such 3D printed carbon fiber specimens is evaluated. While the precursor carbon fiber reinforced filaments achieve a stiffness of 50GPa and strength 700MPa, mechanical properties of their printed parts are highly affected by printed carbon fiber curvatures. In this work, the structure of 3D printed parts was examined, and some design rules for 3D printing with continuous carbon fibers are suggested. Moreover, failure mechanisms in these samples are discussed and correlated to the micro-structure of the composites and the carbon fiber configuration.


Carbon ◽  
2013 ◽  
Vol 60 ◽  
pp. 109-116 ◽  
Author(s):  
Montree Sawangphruk ◽  
Pattarachai Srimuk ◽  
Poramane Chiochan ◽  
Atiweena Krittayavathananon ◽  
Santamon Luanwuthi ◽  
...  

2013 ◽  
Vol 1 (26) ◽  
pp. 7709 ◽  
Author(s):  
Shuang Cheng ◽  
Lei Yang ◽  
Yong Liu ◽  
Wei Lin ◽  
Liang Huang ◽  
...  

2016 ◽  
Vol 4 (46) ◽  
pp. 18164-18173 ◽  
Author(s):  
Xiaoyu Lu ◽  
Yang Bai ◽  
Ranran Wang ◽  
Jing Sun

A carbon fiber-based positive electrode enhanced by CNT modification with NiCo(OH)x and a negative electrode functionalized with activated carbon were prepared. The supercapacitor showed high energy and power densities.


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