Evolving affinity between Coulombic reversibility and hysteretic phase transformations in nano-structured silicon-based lithium-ion batteries

K. Ogata (), S. Jeon (), D.-S. Ko, I. S. Jung, J. H. Kim, K. Ito, Y. Kubo, K. Takei, S. Saito, Y.-H. Cho, H. Park, J. Jang, H.-G. Kim, J.-H. Kim, Y. S. Kim, W. Choi, M. Koh, K. Uosaki, S. G. Doo, Y. Hwang and S. Han ()
Additional contact information
K. Ogata: Samsung Advanced Institute of Technology, Samsung Electronics
S. Jeon: Samsung Advanced Institute of Technology, Samsung Electronics
D.-S. Ko: Samsung Advanced Institute of Technology, Samsung Electronics
I. S. Jung: Samsung Advanced Institute of Technology, Samsung Electronics
J. H. Kim: Samsung Advanced Institute of Technology, Samsung Electronics
K. Ito: C4GR-GREEN, National Institute for Materials Science
Y. Kubo: C4GR-GREEN, National Institute for Materials Science
K. Takei: Samsung Advanced Institute of Technology, Samsung Electronics
S. Saito: Samsung Research Institute of Japan, Samsung Electronics, 2-1-11, Senba-nishi
Y.-H. Cho: Samsung Advanced Institute of Technology, Samsung Electronics
H. Park: Samsung Advanced Institute of Technology, Samsung Electronics
J. Jang: Samsung Advanced Institute of Technology, Samsung Electronics
H.-G. Kim: Samsung Advanced Institute of Technology, Samsung Electronics
J.-H. Kim: Samsung Advanced Institute of Technology, Samsung Electronics
Y. S. Kim: Samsung Advanced Institute of Technology, Samsung Electronics
W. Choi: Samsung Advanced Institute of Technology, Samsung Electronics
M. Koh: Samsung Advanced Institute of Technology, Samsung Electronics
K. Uosaki: C4GR-GREEN, National Institute for Materials Science
S. G. Doo: Samsung Advanced Institute of Technology, Samsung Electronics
Y. Hwang: Samsung Advanced Institute of Technology, Samsung Electronics
S. Han: Samsung Advanced Institute of Technology, Samsung Electronics

Nature Communications, 2018, vol. 9, issue 1, 1-17

Abstract: Abstract Nano-structured silicon is an attractive alternative anode material to conventional graphite in lithium-ion batteries. However, the anode designs with higher silicon concentrations remain to be commercialized despite recent remarkable progress. One of the most critical issues is the fundamental understanding of the lithium–silicon Coulombic efficiency. Particularly, this is the key to resolve subtle yet accumulatively significant alterations of Coulombic efficiency by various paths of lithium–silicon processes over cycles. Here, we provide quantitative and qualitative insight into how the irreversible behaviors are altered by the processes under amorphous volume changes and hysteretic amorphous–crystalline phase transformations. Repeated latter transformations over cycles, typically featured as a degradation factor, can govern the reversibility behaviors, improving the irreversibility and eventually minimizing cumulative irreversible lithium consumption. This is clearly different from repeated amorphous volume changes with different lithiation depths. The mechanism behind the correlations is elucidated by electrochemical and structural probing.

Date: 2018
References: Add references at CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/s41467-018-02824-w 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_s41467-018-02824-w

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

DOI: 10.1038/s41467-018-02824-w

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 ().