02/05/2020
RAIN OR SHINE, THE SHOW MUST GO ON 📣 Reposted from .made () - In my research, apart of improving the cathode is creating a conductive, carbon nanotube (CNT) solution that is loaded and cured onto said cathode. This CNT solution is made with Polyvinyliden fluoride i.e PVDF (C2H2F2)n. While having great mechanical properties and chemical & electrical stability, PVDF has a high dissipation factor (disappears over time) which I theorize creates radical Carbon, hydrogen & fluorine molecules (during Cyclic charge/discharge analyses) that eventually get captured by and bond with lithium and oxides (Li-O2 battery) to form various byproducts and superoxides like Li2CO3, LiF, LiOH, LiO, LiCO2 LiO2 & LiHCO3, etc on the cathode surface, which is porous. These byproducts clog the pores of the cathode, increasing the ionic, interfacial and bulk resistance of the battery, eventually leading to failure.
Basically the byproducts form a layer between the cathode and electrolyte. The less contact between the electrolyte and the electrode (every battery has 2, the anode - & cathode +), the more energy resistant your battery is and the faster your battery dies.
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