Revealing and reconstructing the 3D Li-ion transportation network for superionic poly(ethylene) oxide conductor

Cheng-Dong Fang, Ying Huang, Yi-Fan Sun, Peng-Fei Sun, Ke Li, Shu-Yang Yao, Min-Yi Zhang, Wei-Hui Fang () and Jia-Jia Chen ()
Additional contact information
Cheng-Dong Fang: Xiamen University
Ying Huang: Xiamen University
Yi-Fan Sun: Chinese Academy of Sciences
Peng-Fei Sun: Xiamen University
Ke Li: Xiamen University
Shu-Yang Yao: Chinese Academy of Sciences
Min-Yi Zhang: Chinese Academy of Sciences
Wei-Hui Fang: Chinese Academy of Sciences
Jia-Jia Chen: Xiamen University

Nature Communications, 2024, vol. 15, issue 1, 1-11

Abstract: Abstract Understanding the Li-ions conduction network and transport dynamics in polymer electrolyte is crucial for developing reliable all-solid-state batteries. In this work, advanced nano- X-ray computed tomography combined with Raman spectroscopy and solid state nuclear magnetic resonance are used to multi-scale qualitatively and quantitatively reveal ion conduction network of poly(ethylene) oxide (PEO)-based electrolyte (from atomic, nano to macroscopic level). With the clear mapping of the microstructural heterogeneities of the polymer segments, aluminium-oxo molecular clusters (AlOC) are used to reconstruct a high-efficient conducting network with high available Li-ions (76.7%) and continuous amorphous domains via the strong supramolecular interactions. Such superionic PEO conductor (PEO-LiTFSI-AlOC) exhibites a molten-like Li-ion conduction behaviour among the whole temperature range and delivers an ionic conductivity of 1.87 × 10−4 S cm−1 at 35 °Ϲ. This further endows Li electrochemical plating/stripping stability under 50 μA cm−2 and 50 μAh cm−2 over 2000 h. The as-built Li|PEO-LiTFSI-AlOC|LiFePO4 full batteries show a high rate performance and a capacity retention more than 90% over 200 cycling at 250 μA cm−2, even enabling a high-loading LiFePO4 cathode of 16.8 mg cm−2 with a specific capacity of 150 mAh g−1 at 50 °Ϲ.

Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-024-51191-2 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:15:y:2024:i:1:d:10.1038_s41467-024-51191-2

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

DOI: 10.1038/s41467-024-51191-2

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 ().