التفاصيل البيبلوغرافية
| العنوان: |
In situ-formed nitrogen-doped carbon/silicon-based materials as negative electrodes for lithium-ion batteries |
| المؤلفون: |
Monje, Ivonne E., Sanchez-Ramirez, Nedher, Santagneli, Silvia H., Camargo, Pedro H., Belanger, Daniel, Schougaard, Steen B., Torresi, Roberto M. |
| المساهمون: |
Department of Chemistry, Doctoral Programme in Materials Research and Nanosciences, Doctoral Programme in Chemistry and Molecular Sciences |
| بيانات النشر: |
Elsevier Saunders |
| سنة النشر: |
2023 |
| المجموعة: |
Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto |
| مصطلحات موضوعية: |
Lithium-ion batteries, Silicon oxide, Silicon oxycarbide, Nitrogen-doped carbon, Negative electrode, ANODE MATERIAL, SILICON NANOPARTICLES, HIGH-CAPACITY, ELECTROCHEMICAL PERFORMANCE, COMPOSITE ANODES, C COMPOSITE, THIN-FILMS, CARBON, STORAGE, GLASS, Chemical sciences |
| الوصف: |
The development of negative electrode materials with better performance than those currently used in Li-ion technology has been a major focus of recent battery research. Here, we report the synthesis and electrochem-ical evaluation of in situ-formed nitrogen-doped carbon/SiOC. The materials were synthesized by a sol-gel pro-cess using 3-(aminopropyl)triethoxysilane (APTES), sodium citrate and glycerol. The electrochemical performance of pyrolyzed materials was studied using poly(acrylic acid) binder and commercial organic elec-trolyte. Our reported approach enables changes in both the amount of nitrogen and the morphology as a func-tion of the molar ratio of APTES:citrate and reaction time. Spherical-shaped NC/SiOC composite electrodes deliver a delithiation capacity of 622 mAh/g at 0.1 A/g and an initial coulombic efficiency of-63%, while in the large bulk material, respective values of 367 mAh/g and-55% were obtained. After 1000 charge/dis-charge cycles at 1.6 A/g, the latter material exhibits 98% of the initial capacity once it returned to lower cur-rent cycling. Overall, our results indicate that NC/SiOC materials are quite promising for electrochemical applications since both their large capacity and stability demonstrate superior performance compared to tradi-tional graphite. Moreover, our synthesis is simple and, more importantly, environmentally friendly chemicals, such as sodium citrate and glycerol, are used. ; Peer reviewed |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
Monje , I E , Sanchez-Ramirez , N , Santagneli , S H , Camargo , P H , Belanger , D , Schougaard , S B & Torresi , R M 2021 , ' In situ-formed nitrogen-doped carbon/silicon-based materials as negative electrodes for lithium-ion batteries ' , Journal of Electroanalytical Chemistry , vol. 901 , 115732 . https://doi.org/10.1016/j.jelechem.2021.115732; ORCID: /0000-0002-7815-7919/work/103033388; http://hdl.handle.net/10138/354259; 15cfc7aa-9420-4bf7-84d9-18af412e047d; 000709805200014 |
| الاتاحة: |
http://hdl.handle.net/10138/354259 |
| Rights: |
cc_by_nc_nd ; info:eu-repo/semantics/openAccess ; openAccess |
| رقم الانضمام: |
edsbas.ACD15FAB |
| قاعدة البيانات: |
BASE |