Great progress in the development of separator with enhanced security features for lithium-ion batteries by Prof. Jinbao Zhao’s group
Time:2016-09-12   Visits:140

Prof. Jinbao Zhao and his team made great progress in the development of separator with enhanced security features for lithium-ion batteries. The achievement titled “A rational design of separator with substantially enhanced thermal features for lithium-ion batteries by polydopamine-ceramic composite modification of polyolefin membranes” was published in Energy & Environmental Science (DOI:10.1039/c6ee01219a).

In this work, the team report a rational design of separator with substantially enhanced thermal features. The paper reports how, by a simple dip-coating process, polydopamine (PDA) formed an overall-covered self-supporting film, both on the ceramic layer and on the pristine polyolefin separator, which made the ceramic layer and polyolefin separator appear as a single aspect and furthermore, this layer amended the film-forming properties of the separator. Combining the function of the ceramic and PDA, the developed composite-modified separator displays substantially enhanced thermal and mechanical stability, with no visual thermal shrink and can maintain its mechanical strength up to 230 ℃ when the polyethylene separator acts as the pristine separator.