KIT | KIT-Bibliothek | Impressum | Datenschutz

In Situ Measurements of the Mechanical Properties of Electrochemically Deposited Li₂CO₃ and Li₂O Nanorods

Ye, Hongjun; Gui, Siwei; Wang, Zaifa; Chen, Jingzhao; Liu, Qiunan; Zhang, Xuedong; Jia, Peng; Tang, Yushu ORCID iD icon; Yang, Tingting; Du, Congcong; Geng, Lin; Li, Hui; Dai, Qiushi; Tang, Yongfu; Zhang, Liqiang; Yang, Hui; Huang, Jianyu

Abstract:

Solid-electrolyte interface (SEI) is “the most important but least understood (component) in rechargeable Li-ion batteries”. The ideal SEI requires high elastic strength and can resist the penetration of a Li dendrite mechanically, which is vital for inhibiting the dendrite growth in lithium batteries. Even though Li$_{2}$CO$_{3}$ and Li$_{2}$O are identified as the major components of SEI, their mechanical properties are not well understood. Herein, SEI-related materials such as Li$_{2}$CO$_{3}$ and Li$_{2}$O were electrochemically deposited using an environmental transmission electron microscopy (ETEM), and their mechanical properties were assessed by in situ atomic force microscopy (AFM) and inverse finite element simulations. Both Li$_{2}$CO$_{3}$ and Li$_{2}$O exhibit nanocrystalline structures and good plasticity. The ultimate strength of Li$_{2}$CO$_{3}$ ranges from 192 to 330 MPa, while that of Li$_{2}$O is less than 100 MPa. These results provide a new understanding of the SEI and its related dendritic problems in lithium batteries.


Postprint §
DOI: 10.5445/IR/1000141946
Veröffentlicht am 06.12.2022
Originalveröffentlichung
DOI: 10.1021/acsami.1c13732
Scopus
Zitationen: 17
Web of Science
Zitationen: 18
Dimensions
Zitationen: 16
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 09.2021
Sprache Englisch
Identifikator ISSN: 1944-8244, 1944-8252
KITopen-ID: 1000141946
HGF-Programm 43.35.01 (POF IV, LK 01) Platform for Correlative, In Situ & Operando Charakterizat.
Erschienen in ACS applied materials & interfaces
Verlag American Chemical Society (ACS)
Band 13
Heft 37
Seiten 44479–44487
Vorab online veröffentlicht am 13.09.2021
Nachgewiesen in Web of Science
OpenAlex
Scopus
Dimensions
Globale Ziele für nachhaltige Entwicklung Ziel 7 – Bezahlbare und saubere Energie
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page