Fabricating a Continuous Fiber Silver‐Zinc Battery with Micro‐Sized Diameter

Abstract

Yarn‐ or fiber‐structured batteries have been studied steadily due to their huge advantages such as light weight, small size and flexibility. Although some fiber structured batteries were reported, large size and complicated fabrication process still remain to be major challenges in developing practical battery systems. In order to address these problems, we fabricated a micro‐sized and continuous Ag−Zn fiber battery using wet spinning and electrodeposition. This simple and easy process enables to obtain MWNT fiber electrodes with a length of more than 30 cm and a diameter of about 80 μm. Silver and zinc were deposited and formed nano‐porous structures on the as‐prepared wet spun fiber electrodes. Consequently, the Ag−Zn aqueous fiber battery showed an areal capacity of 0.063 mAh/cm2. Our fiber structured battery could be applicable as energy source of portable, wearable, and micro‐sized electronics.

Lithium-Free Batteries: Needs and Challenges

“…Silver–zinc batteries are being utilized in portable photographic instruments and maximum-depth emergency flashlights for industrial applications. They have lately been suggested as an option for cell telephones and handy laptop computers (Figure a,b). ,, The separator of the silver–zinc battery has a remarkable effect on its electrochemical performance. An optimal separator should have high corrosion resistance, excessive conductivity, and high absorptive capability of the electrolyte.…”

Review—Status of Zinc-Silver Battery

“…14,76 The electrodes had three-dimensional conductive structure, which could provide high surface area and short electron and ion diffusion paths; the buffer layer could inhibit structure powdering and slow silver ion migration; the carbon nano-skeleton could maintain structural integrity and increase the mass load of active material, so that the capacity of the battery could be maintained 79.5% after 200 cycles. Lee 67 and zinc on the wet-spinning fiber electrodes to obtain nanoporous electrodes, 13,77 which had more active sites for redox reaction and good ionic and electronic conductivity. The first discharge platforms of batteries maintained 94.6% voltage and the second discharge platforms maintained 92.8% even at 2 mA•cm −2 .…”

Study on sorting method of zinc silver battery based on multi-step FCM clustering algorithm

“…Therefore, it is widely used in underwater, water level equipment and aerospace [3]. Based on the demand for high-power and high-capacity batteries in these fields, the zinc-silver batteries on pack using is an effective solution [4,5]. However, the initial performance problems between the individual cells in the battery pack are not uniform, which accelerates the degradation of battery capacity, thereby resulting in premature failure of the battery pack, and may even cause safety problems [6,7].…”