Propagation topography of redox phase transformations in heterogeneous layered oxide cathode materials

Linqin Mu, Qingxi Yuan, Chixia Tian, Chenxi Wei, Kai Zhang, Jin Liu, Piero Pianetta, Marca M. Doeff, Yijin Liu () and Feng Lin ()
Additional contact information
Linqin Mu: Virginia Tech
Qingxi Yuan: Chinese Academy of Sciences
Chixia Tian: Virginia Tech
Chenxi Wei: SLAC National Accelerator Laboratory
Kai Zhang: Chinese Academy of Sciences
Jin Liu: Stanford University
Piero Pianetta: SLAC National Accelerator Laboratory
Marca M. Doeff: Lawrence Berkeley National Laboratory
Yijin Liu: SLAC National Accelerator Laboratory
Feng Lin: Virginia Tech

Nature Communications, 2018, vol. 9, issue 1, 1-8

Abstract: Abstract Redox phase transformations are relevant to a number of metrics pertaining to the electrochemical performance of batteries. These phase transformations deviate from and are more complicated than the conventional theory of phase nucleation and propagation, owing to simultaneous changes of cationic and anionic valence states as well as the polycrystalline nature of battery materials. Herein, we propose an integrative approach of mapping valence states and constructing chemical topographies to investigate the redox phase transformation in polycrystalline layered oxide cathode materials under thermal abuse conditions. We discover that, in addition to the three-dimensional heterogeneous phase transformation, there is a mesoscale evolution of local valence curvatures in valence state topographies. The relative probability of negative and positive local valence curvatures alternates during the layered-to-spinel/rocksalt phase transformation. The implementation of our method can potentially provide a universal approach to study phase transformation behaviors in battery materials and beyond.

Date: 2018
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-018-05172-x Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05172-x

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-018-05172-x

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().