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  Mechanistic insights into the reversible lithium storage in an open porous carbon via metal cluster formation in all solid-state batteries

Bloi, L. M., Hippauf, F., Boenke, T., Rauche, M., Paasch, S., Schutjajew, K., et al. (2022). Mechanistic insights into the reversible lithium storage in an open porous carbon via metal cluster formation in all solid-state batteries. Carbon, 188, 325-335. doi:10.1016/j.carbon.2021.11.061.

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 Creators:
Bloi, Luise Maria, Author
Hippauf, Felix, Author
Boenke, Tom, Author
Rauche, Marcus, Author
Paasch, Silvia, Author
Schutjajew, Konstantin1, Author           
Pampel, Jonas1, Author           
Schwotzer, Friedrich, Author
Dörfler, Susanne, Author
Althues, Holger, Author
Oschatz, Martin1, Author           
Brunner, Eike, Author
Kaskel, Stefan, Author
Affiliations:
1Martin Oschatz, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2364733              

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Free keywords: All solid-state battery, Microporous carbon, Lithium battery, Anode, Carbide-derived carbon, Lithium cluster
 Abstract: Porous carbons are promising anode materials for next generation lithium batteries due to their large lithium storage capacities. However, their high voltage slope during lithiation and delithiation as well as capacity fading due to intense formation of solid electrolyte interphase (SEI) limit their gravimetric and volumetric energy densities. Herein we compare a microporous carbide-derived carbon material (MPC) as promising future anode for all solid-state batteries with a commercial high-performance hard carbon anode. The MPC obtains high and reversible lithiation capacities of 1000 mAh g−1carbon in half-cells exhibiting an extended plateau region near 0 V vs. Li/Li+ preferable for full-cell application. The well-defined micro porosity of the MPC with a specific surface area of >1500 m2 g−1 combines well with the argyrodite-type electrolyte (Li6PS5Cl) suppressing extensive SEI formation to deliver high coulombic efficiencies. Preliminary full-cell measurements vs. nickel-rich NMC-cathodes (LiNi0.9Co0.05Mn0.05O2) provide a considerably improved average potential of 3.76 V leading to a projected energy density as high as 449 Wh kg−1 and reversible cycling for more than 60 cycles. 7Li Nuclear Magnetic Resonance spectroscopy was combined with ex-situ Small Angle X-ray Scattering to elucidate the storage mechanism of lithium inside the carbon matrix. The formation of extended quasi-metallic lithium clusters after electrochemical lithiation was revealed.

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Language(s): eng - English
 Dates: 2021-11-262022
 Publication Status: Published in print
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Title: Carbon
  Abbreviation : Carbon
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 188 Sequence Number: - Start / End Page: 325 - 335 Identifier: ISSN: 0008-6223

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Title: ChemRxiv : the Preprint Server for Chemistry
  Other : ChemRxiv
Source Genre: Journal
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Publ. Info: Washington, DC; Frankfurt am Main; Cambridge, London : ACS, GDCh, Royal Society of Chemistry
Pages: - Volume / Issue: - Sequence Number: 13819373 Start / End Page: - Identifier: ZDB: 2949894-7