Journal
COMPOSITES COMMUNICATIONS
Volume 26, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.coco.2021.100728
Keywords
Silver-zinc battery; AgNP; CNT-Gp cathode; Flexibility; Quasi-solid-state battery
Categories
Funding
- Guangxi University-Citic Dameng Mining Industries Limited Joint Research Institute
- National Natural Science Foundation of China [51771236, 51901249, U1904216, 11364003]
- Natural Science Foundation of Hunan Province [2020JJ5719]
- Natural Science Foundation of Guangxi [2018GXNSFAA138186]
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This study prepared a silver nanoparticle/carbon nanotube-graphite paper cathode by double-side coating on graphite paper, constructing a 3D spatial conductive network for excellent electrochemical performance of Ag-Zn battery and demonstrating good flexibility. The battery showed superior electrochemical properties and perfect flexibility, successfully lighting up an indicator composed of 9 LED bulbs.
The flexibility and safety of energy storage devices have drawn wide attention due to rapid development of wearable electronics. Silver-zinc (Ag-Zn) battery are one of the promising aqueous zinc-based battery with nontoxic environment, stable output voltage and high energy density. Flexible electrode plays a key role in excellent mechanical and electrochemical properties of batteries. In this work, silver nanoparticles/carbon nanotubesgraphite paper (AgNP/CNT-Gp) cathode is prepared by double-side coating on graphite paper. The mixed silver nanoparticles and carbon nanotubes construct a 3D spatial conductive network to contribute excellent electrochemical performance for Ag-Zn battery. The quasi-solid-state Ag-Zn battery shows area specific capacity of 1.268 mAh/cm2 and excellent energy density of 1.913 mWh/cm2 at current density of 1 mA/cm2. The battery not only represents superior electrochemical properties, but also demonstrates perfect flexibility. We use the quasi-solid-state Ag-Zn battery to successfully light up an indicator composed of 9 LED bulbs, which can still work when the battery is completely folded.
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