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Related Concept Videos

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A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
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In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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Recent Progress in Cathode Materials for Sodium-Metal Halide Batteries.

Xiaowen Zhan1, Minyuan M Li2, J Mark Weller2

  • 1College of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, China.

Materials (Basel, Switzerland)
|July 2, 2021
PubMed
Summary

Sodium metal halide (Na-MH) batteries offer a safe and economical solution for grid-level energy storage. New developments in low-cost cathodes and lower operating temperatures promise comparable performance at reduced costs, enabling renewable energy integration.

Keywords:
ZEBRA batteryenergy storageintermediate temperaturelow-cost cathodesodium metal-halide battery

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Area of Science:

  • Energy Storage
  • Electrochemistry
  • Materials Science

Background:

  • Renewable energy integration is crucial for climate change mitigation.
  • Intermittency of renewables necessitates efficient energy storage solutions.
  • Current battery technologies face limitations in performance, safety, and cost for grid-scale applications.

Purpose of the Study:

  • To review sodium metal halide (Na-MH) batteries as a promising grid-level energy storage technology.
  • To highlight recent advancements in intermediate-temperature, low-cost cathodes for Na-MH batteries.
  • To assess the potential of Na-MH batteries for economical and safe grid energy storage.

Main Methods:

  • Review of existing literature on sodium metal halide batteries.
  • Discussion of conventional Na-MH battery features.
  • Analysis of recent developments in cathode materials (e.g., FeCl2, ZnCl2) and operating temperatures.

Main Results:

  • Na-MH batteries, particularly Na-NiCl2, are identified as viable for grid storage.
  • Development of lower-cost metal halide cathodes and operation at reduced temperatures (e.g., 190 °C) are highlighted.
  • New Na-MH batteries show potential for comparable performance at significantly lower costs.

Conclusions:

  • Na-MH batteries present a cost-effective and safe alternative for grid-level energy storage.
  • Advancements in materials and operating conditions enhance the economic viability of Na-MH batteries.
  • This technology can facilitate the widespread adoption of renewable energy sources paired with storage.