Standard specification for iron-chromium energy storage electrolyte

Does HCl concentration affect electrochemical performance of iron-chromium flow battery?

Effect of FeCl 2, CrCl 3 and HCl concentration on the electrochemical performance of iron-chromium flow battery is systematically investigated, and the optimized electrolyte exhibits excellent battery efficiency (energy efficiency: 81.5%) at 120 mA cm−2. 1. Introduction

Which electrolyte is a carrier of energy storage in iron-chromium redox flow batteries (icrfb)?

The electrolyte in the flow battery is the carrier of energy storage, however, there are few studies on electrolyte for iron-chromium redox flow batteries (ICRFB). The low utilization rate and rapid capacity decay of ICRFB electrolyte have always been a challenging problem.

Can iron-chromium flow batteries be used in large-scale energy storage?

In particular, iron-chromium (Fe/Cr) flow battery, which uses cheaper Fe3+ /Fe 2+ and Cr 3+ /Cr 2+ redox couples in hydrochloric acid solution as the catholyte and anolyte electrolytes respectively, becomes one of the promising candidates for large-scale energy storage application .

Can indium ions improve the electrochemical performance of iron–chromium flow battery?

In 3+ crossover studies from the anolyte to the catholyte for 50 cycles at 160 mA cm −2. 4. Conclusions In this work, a small amount of indium ions is used as the additive to enhance the stability and electrochemical performance of iron–chromium flow battery by inhibiting the serious hydrogen evolution reaction.

Which electrolyte has the best storage capacity?

The storage capacity of the optimum electrolyte (1.3 m FeCl 2, 1.4 m CrCl 3, 5.0 m m Bi 2 O 3 in 1.0 m HCl) is 40% higher (from 17.5 to 24.4 Ah L −1), while the capacity decay rate is tenfold lower (from 3.0 to 0.3% h −1) than the performance of the previously used 1.0 m FeCl 2, 1.0 m CrCl 3 in 3.0 m HCl.

What are the advantages of iron chromium redox flow battery (icrfb)?

Its advantages include long cycle life, modular design, and high safety [7, 8]. The iron-chromium redox flow battery (ICRFB) is a type of redox flow battery that uses the redox reaction between iron and chromium to store and release energy . ICRFBs use relatively inexpensive materials (iron and chromium) to reduce system costs .