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Sodium-ion batteries: present and future.

Jang-Yeon Hwang1, Seung-Taek Myung, Yang-Kook Sun

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Sodium-ion batteries (SIBs) offer a sustainable alternative to lithium-ion batteries (LIBs) due to abundant sodium resources. Research focuses on SIB materials and components to overcome challenges for practical energy storage applications.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Lithium-ion batteries (LIBs) are crucial for modern electronics and electric vehicles but face sustainability concerns due to limited lithium availability.
  • Growing demand for energy storage, especially for renewable energy integration and smart grids, necessitates alternatives to LIBs.

Purpose of the Study:

  • To review and discuss current research on sodium-ion battery (SIB) materials and components.
  • To identify challenges and propose future research directions for the development of practical SIBs.

Main Methods:

  • Literature review of recent advancements in SIB cathode and anode materials.
  • Discussion of electrolytes, additives, and binders for SIBs.
  • Analysis of challenges in cell design and electrode balancing for sodium-ion cells.

Main Results:

  • Various sodiated layer transition metal oxides, phosphates, and organic compounds show promise as SIB cathode materials.
  • Carbonaceous materials, transition metal oxides/sulfides, and intermetallic/organic compounds are being developed as SIB anodes.
  • Progress in electrode materials is noted, but challenges in cell design and balancing persist.

Conclusions:

  • Sodium-ion batteries (SIBs) are a promising next-generation energy storage technology due to the abundance of sodium.
  • Further research is needed to address challenges in cell design and electrode balancing for widespread SIB adoption.
  • This review provides insights into the scientific and practical aspects of SIB development.