Issue 12, 2018

Self-diffusion barriers: possible descriptors for dendrite growth in batteries?

Abstract

Dendrite formation is one of the most pressing issues in current battery research. Lithium based batteries are prone to forming short-circuit causing dendrites, while magnesium based batteries are not. Recently it was proposed that the tendency towards dendrite growth is related to the height of the self-diffusion barrier with high barriers leading to rough surface growth which that subsequently cause dendrite formation, which was supported by density functional theory calculations for Li, Na and Mg [J. Chem. Phys., 2014, 141, 174710]. We now extend this computational study to zinc and aluminum which are also used as battery anode materials, and we additionally consider diffusion barriers that are relevant for three-dimensional growth such as barriers for diffusion across steps. Our results indicate, in agreement with experimental observations, that Li dendrite growth is an inherent property of the metal, whereas Zn dendrite growth results from the loss of metallic properties in conventional Zn powder electrodes.

Graphical abstract: Self-diffusion barriers: possible descriptors for dendrite growth in batteries?

Article information

Article type
Paper
Submitted
17 mai 2018
Accepted
30 juil. 2018
First published
30 juil. 2018

Energy Environ. Sci., 2018,11, 3400-3407

Self-diffusion barriers: possible descriptors for dendrite growth in batteries?

M. Jäckle, K. Helmbrecht, M. Smits, D. Stottmeister and A. Groß, Energy Environ. Sci., 2018, 11, 3400 DOI: 10.1039/C8EE01448E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements