In this paper, a novel separator design and approach is introduced to provide a “fail-safe” mechanism for an internal short circuit by limiting the self-discharge current to prevent cell temperature rise. A nano-composite Janus separator — with a fully electronically insulating side contacting the anode and a partially electronically conductive (PEC) coating with tunable conductivity contacting the cathode — is implemented to intercept dendrites, control internal short circuit resistance, and slowly drain cell capacity.

Read more here: DOI 10.1002/adma.201906836



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