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Related Concept Videos

Batteries and Fuel Cells03:12

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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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Few compounds act as strong acids. A far greater number of compounds behave as weak acids and only partially react with water, leaving a large majority of dissolved molecules in their original form and generating a relatively small amount of hydronium ions. Weak acids are commonly encountered in nature, being the substances partly responsible for the tangy taste of citrus fruits, the stinging sensation of insect bites, and the unpleasant smells associated with body odor. A familiar example of a...
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A Perspective toward Practical Lithium-Sulfur Batteries.

Meng Zhao1,2, Bo-Quan Li3, Xue-Qiang Zhang3

  • 1School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.

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|July 30, 2020
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Summary
This summary is machine-generated.

Lithium-sulfur batteries show promise for high energy density. Practical application challenges require new strategies for high-sulfur cathodes, lean electrolytes, and anode limits.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Lithium-sulfur (Li-S) batteries offer high theoretical energy density, making them a promising next-generation energy storage technology.
  • Significant progress has been made in laboratory-scale Li-S battery research over the last decade.
  • Transitioning Li-S batteries to practical cell scales introduces new, significant challenges.

Purpose of the Study:

  • To highlight key parameters for achieving practical high energy density in Li-S batteries.
  • To redefine scientific problems in the context of practical Li-S cell scales.
  • To propose future research directions and viable strategies for overcoming practical challenges.

Main Methods:

  • Focus on critical parameters: high-sulfur-loading cathodes, lean electrolytes, and limited excess anodes.
  • Re-evaluation of scientific challenges under practical cell conditions, moving beyond idealized models.
  • Identification and proposal of strategic solutions for future development.

Main Results:

  • Practical Li-S battery development necessitates addressing specific limitations in cathode loading, electrolyte quantity, and anode stoichiometry.
  • Existing research paradigms may not fully capture the complexities of real-world Li-S battery applications.
  • New approaches are required to overcome bottlenecks in scaling up Li-S battery technology.

Conclusions:

  • Achieving practical high energy density in Li-S batteries depends on optimizing high-sulfur cathodes, lean electrolytes, and anode usage.
  • Future research must focus on solving problems redefined for practical cell scales, not just ideal lab conditions.
  • Viable strategies are proposed to guide future development towards successful commercialization of Li-S batteries.