Jump to main content
Jump to site search

Issue 16, 2018
Previous Article Next Article

Degradation of thin-film lithium batteries characterised by improved potentiometric measurement of entropy change

Author affiliations

Abstract

The degradation phenomena of thin-film solid state batteries caused by cycling at a high cut-off voltage and different temperatures were studied using an improved potentiometric measurement of entropy change combined with electrochemical impedance analysis and incremental capacity analysis. Entropy profiling is demonstrated as a viable non-destructive technique for solid state batteries that is sensitive to structural changes in electrodes during galvanostatic cycling, and is complementary to other techniques for studying degradation. The characteristic peaks and valleys in the entropy profile as a function of the state-of-charge could be closely correlated to theories of phase transitions in the cathode material. This technique is therefore a useful technique to help understand and diagnose the degradation mechanism, and specify the state-of-health in a promising new battery technology.

Graphical abstract: Degradation of thin-film lithium batteries characterised by improved potentiometric measurement of entropy change

Back to tab navigation

Publication details

The article was received on 23 Dec 2017, accepted on 15 Mar 2018 and first published on 15 Mar 2018


Article type: Paper
DOI: 10.1039/C7CP08588E
Citation: Phys. Chem. Chem. Phys., 2018,20, 11378-11385
  •   Request permissions

    Degradation of thin-film lithium batteries characterised by improved potentiometric measurement of entropy change

    X. Zhang, Y. Zhao, H. Liu, T. Zhang, W. Liu, M. Chen, Y. Patel, G. J. Offer and Y. Yan, Phys. Chem. Chem. Phys., 2018, 20, 11378
    DOI: 10.1039/C7CP08588E

Search articles by author

Spotlight

Advertisements