Blanchard, Didier

Das, Supti

Jongh, Petra E. de

Lefevr, Jessica

Ngene, Peter

Online Research Database In Technology

                       General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.  • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal   If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.     Downloaded from orbit.dtu.dk on: Apr 10, 2018Solid-state lithium sulfur batteries using nanoconfined complex hydrides as solidelectrolytesDas, Supti; Lefevr, Jessica; Ngene, Peter; Jongh, Petra E. de ; Blanchard, DidierPublication date:2017Document VersionPublisher's PDF, also known as Version of recordLink back to DTU OrbitCitation (APA):Das, S., Lefevr, J., Ngene, P., Jongh, P. E. D., & Blanchard, D. (2017). Solid-state lithium sulfur batteries usingnanoconfined complex hydrides as solid electrolytes. Abstract from 2nd Conference on Lithium Sulfur:Mechanisms, Modelling & Materials (LI-SM3 2017), London, United Kingdom.Lithium Sulfur: Mechanisms, Modelling & Materials 26th – 27th April 2017 Li-SM3-Poster-Abstract-Blanchard.docx  Materials/Applications Poster Abstract   Solid-state lithium sulfur batteries using nanoconfined complex hydrides as solid electrolytes. Supti Das1, Jessica Lefevr1, Peter Ngene2, Petra E. de Jongh2 and Didier Blanchard1 1 1Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, DK-4000 Roskilde, Denmark 2 Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands  The development of cost-effective technologies for electricity storage is crucial to achieve carbon-free energy systems, for large market penetration of electrical vehicle and integration of renewable, but intermittent, energy sources into the grid system. For the best technology, i.e. state-of-the-art lithium-ion batteries, limited improvement in capacity and cost are expected because of the use of liquid or gel electrolytes, typically lithium salts dissolved in organic solvents, which limits the choice of electrode materials and exposes to safety concerns.  A solution of choice would be to replace the liquid electrolytes by solid-state electrolyte. However to find a good material with the adequate properties is a challenging task.  During the last years, LiBH4 has been proposed as a solid-state electrolyte. It shows a high ionic conductivity, but only at elevated temperatures. Since then a range of other complex metal hydrides has been reported to show similar characteristics.[1] Strategies have been developed to extend the high ionic conductivity of LiBH4 down to room temperature, e.g. by partial anion substitution[2] and we recently found that if LiBH4 is confined in a mesoporous SiO2 scaffold, the lithium conductivity is multiplied by 1000![3]. We have successfully built and characterized all-solid-state lithium-sulfur batteries based on these solid electrolyte. The batteries show very good performances, delivering high capacities versus sulfur mass, typically 1220 mAhg-1 after 40 cycles at moderate temperature (55 oC), 0.03 C rates and working voltage of 2 V. To date, this is the first report of lithium-sulfur batteries based on complex hydrides solid electrolyte, achieving such high capacities at moderate temperature.[4]  Charge / discharge of a Solid-State Lithium Sulfur battery build around nano-confined LiBH4 in MCM-41 mesoporous silica as solid electrolyte. References 1. P. E. de Jongh, D. Blanchard, M. Matsuo, T. J. Udovic, S. Orimo, Appl. Phys. A 2016, 122, 251. 2. D. Sveinbjörnsson, J. S. G. Myrdal, D. Blanchard, J. J. Bentzen, T. Hirata, M. B. Mogensen, P. Norby, S.-I. Orimo, T. Vegge, J. Phys. Chem. C 2013, 117, 3249. 3. D. Blanchard, A. Nale, D. Sveinbjörnsson, T. M. Eggenhuisen, M. H. W. Verkuijlen, Suwarno, T. Vegge, A. P. M. Kentgens, P. E. de Jongh, Adv. Funct. Mater. 2015, 25, 184. 4. S. Das, P. Ngene, P. Norby, T. Vegge, P. E. De Jongh, D. Blanchard, J. Electrochem. Soc.2016, 163 (9), 2029. 

Solid-state lithium sulfur batteries using nanoconfined complex hydrides as solid electrolytes

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Solid-state lithium sulfur batteries using nanoconfined complex hydrides as solid electrolytes

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