<ul><li>A recent study suggests that solid-state lithium metal batteries using lithium lanthanum zirconium oxide (LLZO) as a solid electrolyte do not significantly increase energy density compared to current lithium-ion batteries.</li><li>The use of LLZO results in only a small improvement in energy density, achieving 272 Wh/kg compared to the 250-270 Wh/kg of lithium-ion batteries.</li><li>LLZO faces challenges such as weight, brittle nature, manufacturing difficulty, and issues with lithium dendrites.</li><li>Researchers propose hybrid solutions, such as LLZO-in-polymer composite electrolytes, and quasi-solid-state batteries to improve energy performance, reduce weight, and address practical engineering issues.</li></ul>

Solid-state lithium batteries may not be the game-changer we expected

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