Project description
Making sodium batteries last longer
Sodium-ion batteries (NIBs) are a viable alternative to lithium-based energy storage because of their cost and resource advantages. However, their short cycle life remains a challenge. While hard carbon, the most promising anode material, has good energy density, it degrades too quickly. The underlying mechanisms of this degradation remain poorly understood. Supported by the Marie Skłodowska-Curie Actions scheme, the EISNMR project combines cutting-edge techniques such as electrochemical impedance spectroscopy (EIS) and nuclear magnetic resonance (NMR) to examine sodium-ion behaviour at the electrode interface. By elucidating charge transfer and solid electrolyte interphase formation across varying temperatures and electrolyte compositions, the project aims to reveal the root cause of degradation and harness more stable, longer-duration sodium-ion batteries.
Objective
Na-ion battery (NIB) is the most promising technology among the next generation battery technologies. The main issue facing NIB is in their low cycle life. Limited cycle life of Na batteries results from degradation mechanisms occurring at both the cathode and the anode. While multiple cathode materials have been developed, the best-performing anode material remains hard carbon. Despite hard carbon's acceptable energy density, it suffers from inadequate cycle life. Significant efforts have been made to understand Na storage mechanisms in hard carbon. However, little effort has been devoted to understanding the degradation mechanisms and strategies to mitigate them. I propose research spanning multiple scales to evaluate the mechanisms causing degradation in hard carbon anodes and develop strategies to inhibit them, focusing on SEI and charge transfer mechanisms, and their influence by various operating parameters. This work will involve intensive mechanistic studies of Na-ion charge transfer and interfacial processes by conducting in-situ Electrochemical Impedance Spectroscopy (EIS) and Nuclear Magnetic Resonance Spectroscopy (NMR) measurements, which will identify and quantify the contributions of both Na-ion charge transfer and interface to hard carbon degradation. I will employ hard carbon symmetric cell configuration that allows for detailed analysis without the contribution from other electrodes. I will scale this mechanistic work with various parameters including electrolyte composition and temperature. The results will identify the primary contributors to the low cycle life of hard carbon anodes and bring strategies to extend their cycle life.
Fields of science (EuroSciVoc)
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CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
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Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
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Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) HORIZON-MSCA-2024-PF-01
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CB2 1TN CAMBRIDGE
United Kingdom
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