التفاصيل البيبلوغرافية
| العنوان: |
Elucidating Degradation Mechanisms of Silicon-graphite Electrodes in Lithium-ion Batteries by Local Electrochemistry |
| المؤلفون: |
Jiyane, Nomnotho, Garcia-Quismondo, Enrique, Ventosa, Edgar, Schuhmann, Wolfgang, Santana Santos, Carla |
| المصدر: |
Batteries&Supercaps, 6, (2023-06-01) |
| بيانات النشر: |
Zenodo |
| سنة النشر: |
2023 |
| المجموعة: |
Zenodo |
| مصطلحات موضوعية: |
lithium-ion battery · electron transfer kinetics · Si C · scanning electrochemical microscopy · solid electrolyte interphase |
| الوصف: |
The integrity of the solid electrolyte interphase (SEI) formed on the negative electrode of lithium-ion batteries (LIB) is especially critical for the performance of next-generation LIBs comprising silicon-carbon based electrode materials. The protecting character of the SEI is compromised due to volume expansion and shrinking during de/intercalation of Li ions leading to irreversible changes upon long-term cycling. Scanning electrochemical microscopy (SECM) is proposed as local electrochemical technique to investigate the degradation mechanisms of advanced negative electrodes. The impact of charge/discharge cycling on the SEI properties on Si−C electrodes was investigated, and the sensitivity of SECM successfully reveals inhomogeneities at an early stage of the cycling already at about 5 cycles. Macroscopic EIS measurements and evaluation of the coulombic efficiency may result in misleading interpretations of degradation. SECM is demonstrated to be a powerful and complementary technique for revealing μm-heterogeneities in the SEI surface reactivity after a few charge/discharge cycles. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
English |
| Relation: |
https://zenodo.org/communities/eu; https://doi.org/10.1002/batt.202300126; oai:zenodo.org:10184168 |
| DOI: |
10.1002/batt.202300126 |
| الاتاحة: |
https://doi.org/10.1002/batt.202300126 |
| Rights: |
info:eu-repo/semantics/openAccess ; Creative Commons Attribution 4.0 International ; https://creativecommons.org/licenses/by/4.0/legalcode |
| رقم الانضمام: |
edsbas.78D1C5E4 |
| قاعدة البيانات: |
BASE |