University of Oulu

Cavers, H., Molaiyan, P., Abdollahifar, M., Lassi, U., Kwade, A., Perspectives on Improving the Safety and Sustainability of High Voltage Lithium-Ion Batteries Through the Electrolyte and Separator Region. Adv. Energy Mater. 2022, 2200147.

Perspectives on improving the safety and sustainability of high voltage lithium-ion batteries through the electrolyte and separator region

Saved in:
Author: Cavers, Heather1,2; Molaiyan, Palanivel3; Abdollahifar, Mozaffar1,2;
Organizations: 1Institute for Particle Technology, Technische Universität Braunschweig, Volkmaroder Str. 5, 38104 Braunschweig, Germany
2Battery LabFactory Braunschweig (BLB), Technische Universität Braunschweig, Langer Kamp 19, 38103 Braunschweig, Germany
3Research Unit of Sustainable Chemistry, University of Oulu, P. O. Box 4300, Oulu, 90570 Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 6 MB)
Persistent link:
Language: English
Published: John Wiley & Sons, 2022
Publish Date: 2022-05-10


Lithium-ion batteries (LIBs) are promising candidates within the context of the development of novel battery concepts with high energy densities. Batteries with high operating potentials or high voltage (HV) LIBs (>4.2 V vs Li⁺/Li) can provide high energy densities and are therefore attractive in high-performance LIBs. However, a variety of challenges (including solid electrolyte interface (SEI), lithium plating, etc.) and related safety issues (such as gas formation or thermal runaway effects) must be solved for the practical, widespread application of HV-LIBs. Most of these challenges arise in the region between the electrodes: the electrolyte region. This review provides an overview of recent development and progress on the electrolyte region, including liquid electrolytes, ionic liquids, gel polymer electrolytes, separators, and solid electrolytes for HV-LIBs applications. A focus on improving the safety of these systems, with some perspectives on their relative cost and environmental impact, is given. Overall, the new information is encouraging for the development of HV-LIBs, and this review serves as a guide for potential strategies to improve their safety, allowing the development of HV-LIBs, including solid-state batteries, to be accelerated to practical relevance.

see all

Series: Advanced energy materials
ISSN: 1614-6832
ISSN-E: 1614-6840
ISSN-L: 1614-6832
DOI: 10.1002/aenm.202200147
Type of Publication: A2 Review article in a scientific journal
Field of Science: 116 Chemical sciences
Funding: This work was supported by the German Federal Ministry for Education and Research (BMBF) for the funding of the research project EVanBatter (Reference No. 03XP0340B) and the research project FastChargeLongLife (Reference No. 03XP0313) from GreenBatt-Cluster projects are acknowledged. This work was also supported and funded by EU/EURF (PASS, A76178) and EU/Interreg Nord (SolBat, Grant No. 20202885) projects are acknowledged.
Copyright information: © 2022 The Authors. Advanced Energy Materials published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.