Battelle Memorial Institute

Other

Huilin Pan

Jun Liu

Zimin Nie

Bin Li

Vincent L Sprenkle

Jie Xiao

Wei Wang

Jun Lu

Z Daniel Deng

Wesley A Henderson

Yang Yang

Litao Yan

Xiaoqin Zang

This document describes techniques and systems for in operando, non-invasive SOC monitoring of redox flow batteries. The described techniques and systems allow for accurate, inexpensive, portable, and real-time methods to measure the SOC of redox flow batteries. System operators can monitor the SOC by measuring an acoustic attenuation coefficient of the electrolyte in the redox flow battery. The acoustic attenuation coefficient is measured using an ultrasonic transducer attached to a probing cell, which is connected to an electrolyte flow of a redox flow battery. The acoustic attenuation coefficient provides an accurate, real-time SOC measurement that is generally insensitive to varying operational temperatures of the electrolyte solution.

In operando, non-invasive state-of-charge monitoring for redox flow batteries

Disclosed are cathodes having electron-conductive high-surface-area materials, aqueous non-halide-containing electrolytes, secondary zinc-iodine energy storage devices using the same, and methods for assembling the same. The disclosed high-surface-area materials and the aqueous non-halide-containing electrolyte solutions can contribute together to the confinement of the active iodine species in the cathode and to the minimization of shuttle effects and self-discharging. The non-halide-containing electrolyte salts can facilitate preferential adsorption of the iodine species to the cathode material rather than dissolution in the aqueous electrolyte solution, thereby contributing to the confinement of the active iodine species.

Zinc-iodine secondary energy storage methods, devices, and electrolytes

Electrolyte for stable cycling of high-energy lithium sulfur redox flow batteries

Growing community of inventors

Richland, WA, United States of America

Huilin Pan