title: Ag(x)VOPO(4): A Demonstration of the Dependence of Battery-Related Electrochemical Properties of Silver Vanadium Phosphorous Oxides on Ag / V Ratios.
abstract: As a part of our on-going study on silver vanadium phosphorous oxides (Ag(x)V(y)O(z)PO(4)), we report here the first study of the electrochemical reduction of a low Ag/V ratio silver vanadium phosphorous oxide, Ag(0.48)VOPO(4)·1.9H(2)O. Reminiscent of Ag(2)VO(2)PO(4) reduction, in-situ formation of silver metal nanoparticles along with an associated increase in conductivity were observed after reduction of Ag(0.48)VOPO(4)·1.9H(2)O with 0.37 electron equivalents. However, in contrast to our lithium / Ag(2)VO(2)PO(4) cells, our lithium / Ag(0.48)VOPO(4)·1.9H(2)O cells displayed an even higher voltage on discharge and a characteristic multi-plateau voltage profile, where vanadium reduction was the first reduction step.
authors.affiliation: Department of Chemical and Biological Engineering, University at Buffalo (SUNY), Buffalo, NY 14260.
authors.forename: Young Jin
authors.initials: YJ
authors.lastname: Kim
authors.forename: Chia-Ying
authors.initials: CY
authors.lastname: Lee
authors.forename: Amy C
authors.initials: AC
authors.lastname: Marschilok
authors.forename: Kenneth J
authors.initials: KJ
authors.lastname: Takeuchi
authors.forename: Esther S
authors.initials: ES
authors.lastname: Takeuchi