The true performance of Li-CO₂ batteries for resolving the disagreement on their feasibility.

ABSTRACT: Lithium (Li)-CO₂ batteries, capable of converting CO₂ to Li₂CO₃/C while delivering significant energy, have attracted extensive research interest. However, their feasibility remains controversial and underexplored. To address this, a rigorous testing system combining ECC-air battery models and differential electrochemical mass spectrometry (DEMS) was developed to ensure a pure gas environment. Findings reveal that even minute O₂ permeation (0.5%) from air can elevate the discharge plateau, misleadingly transforming Li-CO₂ into Li-O₂/CO₂ batteries. Under strict testing, true Li-CO₂ battery performance falls short of reported successes. Experimental and theoretical confirmation shows the 4Li +

SUBMITTER: Chen K 

PROVIDER: S-EPMC12686804 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature