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Title: Evolution of the electrochemical interface in sodium ion batteries with ether electrolytes
Authors: Li, K 
Zhang, J
Lin, D 
Wang, DW
Li, B
Lv, W
Sun, S
He, YB
Kang, F
Yang, QH
Zhou, L 
Zhang, TY
Issue Date: 2019
Source: Nature communications, 2019, v. 10, no. 1, 725
Abstract: Ether based electrolytes have surfaced as alternatives to conventional carbonates allowing for enhanced electrochemical performance of sodium-ion batteries; however, the primary source of the improvement remains poorly understood. Here we show that coupling titanium dioxide and other anode materials with diglyme does enable higher efficiency and reversible capacity than those for the combination involving ester electrolytes. Importantly, the electrolyte dependent performance is revealed to be the result of the different structural evolution induced by a varied sodiation depth. A suit of characterizations show that the energy barrier to charge transfer at the interface between electrolyte and electrode is the factor that dominates the interfacial electrochemical characteristics and therefore the energy storage properties. Our study proposes a reliable parameter to assess the intricate sodiation dynamics in sodium-ion batteries and could guide the design of aprotic electrolytes for next generation rechargeable batteries.
Publisher: Nature Publishing Group
Journal: Nature communications 
EISSN: 2041-1723
DOI: 10.1038/s41467-019-08506-5
Rights: © The Author(s) 2019. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit
The following publication Li, K., Zhang, J., Lin, D., Wang, D. W., Li, B., Lv, W., ... & Zhou, L. (2019). Evolution of the electrochemical interface in sodium ion batteries with ether electrolytes. Nature communications, 10(1), 725 is available at
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