title: Ultrasonic enhancement of battery diffusion.
abstract: It has been demonstrated that sonic energy can be harnessed to enhance convection in Galvanic cells during cyclic voltammetry; however, the practical value of this approach is limited due to the lack of open volumes for convection patterns to develop in most batteries. This study evaluates the ability of ultrasonic waves to enhance diffusion in membrane separators commonly used in sandwich-architecture batteries. Studies include the measuring of open-circuit performance curves to interpret performances in terms of reductions in concentration overpotentials. The use of a 40 kHz sonicator bath can consistently increase the voltage of the battery and reduce overpotential losses up to 30%. This work demonstrates and quantifies battery enhancement due to enhanced diffusion made possible with ultrasonic energy.
authors.affiliation: University of Missouri, Department of Chemical Engineering, W2033 Lafferre Hall, Columbia, MO 65211, United States. Electronic address: rhwv9@mail.missouri.edu.
authors.forename: R
authors.initials: R
authors.lastname: Hilton
authors.forename: D
authors.initials: D
authors.lastname: Dornbusch
authors.forename: K
authors.initials: K
authors.lastname: Branson
authors.forename: A
authors.initials: A
authors.lastname: Tekeei
authors.forename: G J
authors.initials: GJ
authors.lastname: Suppes
mesh_terms: D004058:Diffusion; D011211:Electric Power Supplies; D004563:Electrochemistry; D013010:Sonication
keywords: Battery; Diffusion cell; Fuel cell; Ultrasonics; Zinc manganese oxide