Towards Stable Lithium Metal Anodes

  • Author: Georg R. Meseck
  • Published: 03 January 2017
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
  • Source / Publisher: Advanced Materials/Wiley-VCH
thumbnail image: Towards Stable Lithium Metal Anodes

Lithium-ion batteries with a Li metal anode are considered a strong candidate for the next generation of rechargeable batteries because of their high theoretical capacity (3860 mAh g–1). Unfortunately, the high volume change of Li and the formation of dendrites upon cycling pose a safety risk and make this type of battery rather short-lived in operation.

Yi Cui, Stanford University, USA and colleagues have developed an artificial solid electrolyte interphase (SEI) that forms a protective layer on Li metal anodes to meet these challenges. First, CuN3 nanoparticles (NPs) were prepared through the reaction of Cu(OMe)2 with benzylamine and subsequently dispersed in THF together with the polymer styrene butadiene rubber (SBR). The dispersion was then either drop-cast or blade-coated onto the metal anode where the NPs were immediately passivated by the formation of LiN3 – one of the fastest Li-ion conductors.

The resulting coating efficiently supressed the formation of dendrites and maintained integrity during cycling, which was demonstrated by a high coulombic efficiency of more than 97.4 %. Furthermore, the researchers successfully demonstrated that their approach can be used to homogenously coat novel porous Li metal anodes to further reduce the detrimental effects during cycling.


 

Article Views: 1321

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH