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Iron-based flow batteries to store renewable energies

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Abstract

The development of cost-effective and eco-friendly alternatives of energy storage systems is needed to solve the actual energy crisis. Although technologies such as flywheels, supercapacitors, pumped hydropower and compressed air are efficient, they have shortcomings because they require long planning horizons to be cost-effective. Renewable energy storage systems such as redox flow batteries are actually of high interest for grid-level energy storage, in particular iron-based flow batteries. Here we review all-iron redox flow battery alternatives for storing renewable energies. The role of components such as electrolyte, electrode and membranes in the overall functioning of all-iron redox flow batteries is discussed. The effect of iron–ligand chemistry on the performance of battery is highlighted. Additionally, a brief contextual background and fundamentals of redox flow batteries are provided. The design aspects, progress in research, mathematical modeling, cost estimations and future prospects of using all-iron energy systems are discussed in the context of future grid-level energy storage.

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Acknowledgements

We gratefully thank the Department of Science and Technology (DST), India, for financial support under MES scheme, DST/TMD/MES/2K16/83.

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Correspondence to Inamuddin or Handanahally Basavarajaiah Muralidhara.

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Dinesh, A., Olivera, S., Venkatesh, K. et al. Iron-based flow batteries to store renewable energies. Environ Chem Lett 16, 683–694 (2018). https://doi.org/10.1007/s10311-018-0709-8

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  • DOI: https://doi.org/10.1007/s10311-018-0709-8

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