التفاصيل البيبلوغرافية
| العنوان: |
Stoichiometry-Controlled Reversible Lithiation Capacity in Nanostructured Silicon Nitrides Enabled by in Situ Conversion Reaction |
| المؤلفون: |
Asbjørn Ulvestad (6672638), Marte O. Skare (11487289), Carl Erik Foss (11487292), Henrik Krogsæter (11487295), Jakob F. Reichstein (11487298), Thomas J. Preston (1529572), Jan Petter Mæhlen (5093918), Hanne F. Andersen (11487301), Alexey Y. Koposov (1772461) |
| سنة النشر: |
2021 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Biochemistry, Cell Biology, Biotechnology, Evolutionary Biology, Ecology, Developmental Biology, Computational Biology, Space Science, Environmental Sciences not elsewhere classified, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, past decade silicon, delivering high capacity, conventional slurry processing, active silicon domains, initial chemical composition, stability challenges associated, exceptional cycling stability, common alloying materials, alloying anode materials, herein unambiguously confirmed, convertible anode material, based batteries directly, >), 2 , based batteries, >, initial lithiation, x <, situ < |
| الوصف: |
In modern Li-based batteries, alloying anode materials have the potential to drastically improve the volumetric and specific energy storage capacity. For the past decade silicon has been viewed as a “Holy Grail” among these materials; however, severe stability issues limit its potential. Herein, we present amorphous substoichiometric silicon nitride (SiN x ) as a convertible anode material, which allows overcoming the stability challenges associated with common alloying materials. Such material can be synthesized in a form of nanoparticles with seamlessly tunable chemical composition and particle size and, therefore, be used for the preparation of anodes for Li-based batteries directly through conventional slurry processing. Such SiN x materials were found to be capable of delivering high capacity that is controlled by the initial chemical composition of the nanoparticles. They exhibit an exceptional cycling stability, largely maintaining structural integrity of the nanoparticles and the complete electrodes, thus delivering stable electrochemical performance over the course of 1000 charge/discharge cycles. Such stability is achieved through the in situ conversion reaction, which was herein unambiguously confirmed by pair distribution function analysis of cycled SiN x nanoparticles revealing that active silicon domains and a stabilizing Li 2 SiN 2 phase are formed in situ during the initial lithiation. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| Relation: |
https://figshare.com/articles/journal_contribution/Stoichiometry-Controlled_Reversible_Lithiation_Capacity_in_Nanostructured_Silicon_Nitrides_Enabled_by_i_in_Situ_i_Conversion_Reaction/16689340 |
| DOI: |
10.1021/acsnano.1c06927.s001 |
| الاتاحة: |
https://doi.org/10.1021/acsnano.1c06927.s001 |
| Rights: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.32CB2B77 |
| قاعدة البيانات: |
BASE |