Revealing the changes of mechanical property: The overall effective Young's modulus of the lithium-ion battery, measured by ultrasonic time of flight and dilation measurements, decreases by ∼11 %–12 % over the course of 1000 cycles. The li...
Efficient Low Temperature Performance of All Solid‐State Zinc‐Air Batteries with MnCo2O4/Carbon Fiber Bifunctional Electrocatalyst and Poly(Acrylic Acid) (PAA) Gel Polymer Electrolyte
Von Wiley-VCH zur Verfügung gestellt
Low temperature all solid-state zinc-air batteries: MnCo2O4 coated carbon fibers were used to prepare a highly efficient homemade air electrode for all solid state zinc-air batteries with PAA-KOH gel polymer electrolyte. The battery performance was evaluated at subzero temperatures. This battery fully charged and discharged at all temperatures with outstanding low temperature performance.
Spinel type MnCo2O4 coated on asphaltene based carbon fibers (MnCo2O4/CF) was used as the electrode material/electrocatalyst for air electrodes for zinc-air batteries (ZABs). The batteries were assembled using an alkaline poly(acrylic acid) hydrogel electrolyte. The low temperature battery performance of the prepared ZAB cells was studied in terms of charge/discharge voltage and efficiency at different current densities, cycle life, power density, and cell voltage at temperatures between −45 °C and 21 °C. At all temperatures, the ZABs successfully completed 200 cycles of charge/discharge (100 h) at 2 mA cm−2 which is double the current density reported in the recent literature. The maximum power densities at 0 and −45 °C were 75 and 12 mW cm−2, respectively. The good performance is attributed to the porous design of the air electrode and the use of an efficient electrocatalyst and an optimized gel polymer electrolyte.Zum Volltext
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