The growth of lithium(Li)whiskers is detrimental to Li ***,it remains a challenge to directly track Li whisker *** we report in situ observations of electrochemically induced Li deposition under a co.(2) atmosphere in...
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The growth of lithium(Li)whiskers is detrimental to Li ***,it remains a challenge to directly track Li whisker *** we report in situ observations of electrochemically induced Li deposition under a co.(2) atmosphere inside an environmental transmission electron *** find that the morphology of individual Li deposits is strongly influenced by the co.peting processes of cracking and self-healing of the solid electrolyte interphase(SEI).When cracking overwhelms self-healing,the directional growth of Li whiskers *** co.trast,when self-healing dominates over cracking,the isotropic growth of round Li particles *** Li deposition rate and SEI co.stituent can be tuned to co.trol the Li *** reveal a new“weak-spot”mode of Li dendrite growth,which is attributed to the operation of the Bardeen-Herring growth mechanism in the whisker’s cross *** work has implications for the co.trol of Li dendrite growth in Li batteries.
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