Summary
In order to realize safer, cost-effective, and long-lasting batteries to sustain the progress in electric vehicles and mobile electronic devices, the development of stable, nonflammable, and efficient electrolytes for high energy density Li-metal batteries is paramount to this effort. This project aims to take a giant leap towards the development of safe all-solid-state Li-metal batteries (LMB) with excellent performance by providing key enabling technologies. The successful development of this technology will benefit mobile and stationary applications and support the effort of society to achieve zero-emission energy for increased quality of life. Addressing the challenges and limitations that range from material development all the way through manufacturing, this project is a joint effort to bring solid-state batteries many steps closer to commercialization. The objective of this project is to enable next-generation LMB with improved performance, lifetime, safety and lowered cost by developing novel mechanically robust ionic liquid gel polymer electrolyte and 3D decorated electrode architectures LiFePO4 with enhanced ion-exchange stability. This will be reached by (1) developing a new UV-cross-linked polymer electrolyte – composed of ionic liquids, lithium salt, and a acrylate polymer – with high ionic conductivity (> 5mS/cm at RT) and operational stability; (2) developing functional coatings for the cathode material to enhance the electrode-electrolyte interface, and for the Li metal anode for stable/dendrite-free Li plating/stripping and (3) support material and cell development by advanced characterization and modeling approaches and enable a model-based optimization. The outcomes of this project, proof-of-concept solid-state LMB, will make an immediate impact in the field of energy storage and are expected to facilitate the development of safe and effective gel electrolytes for high performance Li batteries for real-world applications in the near future.
Project Team
Project Leader : Dr. Ciprian-Ghiorghita Iacob (https://orcid.org/0000-0001-7982-0586)
Project Members:
Dr. Adnana Zaulet (https://orcid.org/0000-0002-0094-3813)
Dr. Violeta-Carolina Niculescu (https://orcid.org/0000-0002-0439-3265 )
Dr. Elena Carcadea (https://orcid.org/0000-0002-1513-0225)
Dr. Radu Dorin Andrei ( https://orcid.org/0000-0003-0000-4848 )
Dr. Mihaela-Ramona Buga
Budget
Total budget: 431.900 RON
Budget allocation by stages (in RON):
- Stage 1: Mechanically robust ionogel electrolyte with high ionic conductivity
Total budget: 100.000
- Stage 2: Development of electrodes with high capacity and improved cyclic stability and characterization of the electrode – electrolyte interface.
Total budget: 220.000
- Stage 3: Manufacture and testing of solid-state batteries (SSB)
Total budget: 111.900
Project Objectives
The main objective of this project is to advance all-solid-state Li metal batteries by:
- synthesizing a mechanically robust ionic liquid gel polymer electrolyte (ionogel) with: 1) high conductivity (> 5 mS/cm) at room temperature and 2) high chemical/morphologically/hydrodynamic stability at the Li metal anode interface;
- integrating next-generation anode materials for high energy cells (e.g. Li metal) into the SSB for improved lifetime and energy density;
- developing functional coatings for the cathode material LiFePO4 (LFP) to enhance the electrode-electrolyte interface;
- support material and cell development by advanced characterization and modeling approaches and enable a model-based optimization.
Expected Results
The following deliverables are expected from this project:
D1 – Ionogel – chemically, physically, mechanically and thermodynamically characterized
D2 – Ionogel- electrochemically characterized
D3 – One manuscript submitted for publication and 1-st scientific report sent to the contracting authority
D4 – Development of modified-LFP with surface coatings
D5 – Development of coated Li-metal anode materials
D6 – Optimized cathode electrode (based on performance)
D7 – Optimized anode electrode (based on performance)
D8 – Final electrodes delivered to next activities,
D9 – One manuscript submitted for publication and 1st year report
D10 – Optimized interface electrodes/electrolyte
D11 – Hydrodynamic stability interface during electrodeposition characterized
D12 – Electrochemically and morphological characterized interface electrodes/ionogel electrolyte
D13 – One manuscript submitted for publication, two participations to international scientific conferences (poster/oral presentations) and 2-nd scientific report sent to the contracting authority
D14 – Coin cell assembling cells
D15 – Performance, life-time and post-mortem assessment
D16 – Comparison to state-of-the-art LIBs
D17 – One manuscript submitted for publication, two participations to international scientific conferences (poster/oral presentations) and 3-rd scientific report sent to the contracting authority
Results
RESULTS GeLiBAT
Dissemination via scientific articles, scientific conferences and workshops
(i) Publications
- Maxi Hoffmann, Andreas J. Butzelaar, Ciprian Iacob, Patrick Theato, Manfred Wilhelm” Ionogels as Polymer Electrolytes for Lithium-Metal Batteries: Comparison of Crosslinker”: ACS Applied Polymer Materials 4 (4), 2022, 2794-2805; https://doi.org/10.1021/acsapm.2c00075.
- Maxi Hoffmann, Ciprian Iacob , Gina Kaysan, Mira Simmler, Gisela Guthausen, Hermann Nirschl and Manfred Wilhelm , “Charge Transport and Glassy Dynamics in Blends based on 1-Butyl-3-vinylbenzylimidazolium bis(trifluoromethanesulfonyl)imide Ionic Liquid and the Corresponding Polymer” Polymers 2022, 14(12), 2423; https://doi.org/10.3390/polym14122423
- Ciprian Iacob, Matthias Heck and Manfred Wilhelm, ” Molecular Dynamics of Polymyrcene; rheology and broadband dielectric Spectroscopy on a Stockmayer Type A Polymer” articol in procesul de review la ACS Macromolecules, Manuscript ID: ma-2022-01884a, 2022.
- Ciprian Iacob, Radu Andrei and Elena Carcadea, ”Polymeric Ionic Composites Electrolytes for Solid-State Batteries”, Abstract accepted for the Special Topic „Polymer Electrolytes” Editors: Prof. Dr. Rong-Ho Lee and Dr. Catalin Gainaru https://www.mdpi.com/topics/polymer_electrolytes
(ii ) Scientific conferences and workshops
- “Charge Transport and Glassy Dynamics in Polymerized Ionic Liquids” Ciprian Iacob, Maxi Hoffmann, Matthias Heck, Atsushi Matsumoto and Manfred Wilhelm.Annual European Rheology Conference 2021 (AERC 2021) in Cyberspace, April 13-14, 2021;
- ” Correlation of Ionic Conductivity with Nanoscale Morphology” Ciprian Iacob, Maxi Hoffmann, Matthias Heck, Atsushi Matsumoto and Manfred Wilhelm Macromolecular Colloquium Freiburg, February 26, 2021;
- „Correlating ionic conductivity and nanoscale morphology of polymerized imidazolium-based ionic liquids” Ciprian Iacob, Atsushi Matsumoto, Radu Andrei and Elena Carcadea. Workshop: International Dielectric Society 6-9 September 2021;
- ” Solid Polymer Electrolytes for Solid-State Bateries”, Ciprian Iacob, Radu Andrei, Silviu Badea, Irina Petreanu, Adnana Zăuleţ, Violeta Niculescu International Conferance “New Cryogenic and Isotopes Technologies for Energy and Environment – EnergEn”, 2021, Book of Abstract page 163;
- ”Solid Polymer Electrolytes for Solid-State Batteries” Ciprian Iacob, Radu Andrei, Cosmin Ungureanu, and Elena Carcadea, 22nd Romanian International Conference on Chemistry and Chemical Engineering, Sinaia, Romania – September 7 – 9, 2022;
- ”Polymerized ionic liquids: Correlation of ionic conductivity with nanoscale morphology and counterion volume”, Ciprian Iacob, Atsushi Matsumoto, Radu Andrei si Elena Carcadea 11th Conference on Broadband Dielectric Spectroscopy and its Applications, 4-9th September 2022, Donostia-San Sebastian, Spain.
© 2021 I.C.S.I. Rm. Vâlcea
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