Effect of phosphoric acid additive on the electrolyte of all-vanadium flow batteries
Xue Wu, Xuewen Wu, Jingjing Liao, Xingrong Yin, Jun Liu, Saixiang Wu, Xiongwei Wu, Xiongwei Wu, Zhiyong Xie, Wei Ling
Abstract
A phosphoric acid additive with an optimal concentration of 0.1 M can vastly promote the diffusion kinetics of the redox reaction between V(IV) and V(V) without a significant decline in energy efficiency for 300 cycles, and maintain the high-temperature stability (55 °C) of an electrolyte at a high state of charge (SOC) of 70% over the course of 30 days.
Topics & Concepts
ElectrolytePhosphoric acidVanadiumDiffusionChemistryRedoxKineticsInorganic chemistryActivation energyChemical engineeringElectrodeOrganic chemistryThermodynamicsPhysical chemistryQuantum mechanicsPhysicsEngineeringAdvanced battery technologies researchElectrocatalysts for Energy ConversionTransition Metal Oxide Nanomaterials