دورية أكاديمية
أعرض في EDS

Toward the Improvement of Silicon-Based Composite Electrodes via an In-Situ Si@C-Graphene Composite Synthesis for Li-Ion Battery Applications.

التفاصيل البيبلوغرافية
العنوان: Toward the Improvement of Silicon-Based Composite Electrodes via an In-Situ Si@C-Graphene Composite Synthesis for Li-Ion Battery Applications.
المؤلفون: Mery A; Université Grenoble Alpes, CEA, CNRS, IRIG-SyMMES, F-38000 Grenoble, France., Chenavier Y; Université Grenoble Alpes, CEA, CNRS, IRIG-SyMMES, F-38000 Grenoble, France., Marcucci C; Université Grenoble Alpes, CEA, CNRS, IRIG-SyMMES, F-38000 Grenoble, France., Benayad A; Université Grenoble Alpes, CEA, LITEN, DTNM, F-38054 Grenoble, France., Alper JP; Université Paris Saclay, IRAMIS, UMR NIMBE, CEA Saclay, F-91191 Gif-sur-Yvette, CEDEX, France., Dubois L; Université Grenoble Alpes, CEA, CNRS, IRIG-SyMMES, F-38000 Grenoble, France., Haon C; Université Grenoble Alpes, CEA, LITEN, DEHT, F-38054 Grenoble, France., Boime NH; Université Paris Saclay, IRAMIS, UMR NIMBE, CEA Saclay, F-91191 Gif-sur-Yvette, CEDEX, France., Sadki S; Université Grenoble Alpes, CEA, CNRS, IRIG-SyMMES, F-38000 Grenoble, France., Duclairoir F; Université Grenoble Alpes, CEA, CNRS, IRIG-SyMMES, F-38000 Grenoble, France.
المصدر: Materials (Basel, Switzerland) [Materials (Basel)] 2023 Mar 19; Vol. 16 (6). Date of Electronic Publication: 2023 Mar 19.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: MDPI Country of Publication: Switzerland NLM ID: 101555929 Publication Model: Electronic Cited Medium: Print ISSN: 1996-1944 (Print) Linking ISSN: 19961944 NLM ISO Abbreviation: Materials (Basel) Subsets: PubMed not MEDLINE
أسماء مطبوعة: Publication: May 2010- : Basel, Switzerland : MDPI
Original Publication: Basel, Switzerland : Molecular Diversity Preservation International, 2008-2010.
مستخلص: Using Si as anode materials for Li-ion batteries remain challenging due to its morphological evolution and SEI modification upon cycling. The present work aims at developing a composite consisting of carbon-coated Si nanoparticles (Si@C NPs) intimately embedded in a three-dimensional (3D) graphene hydrogel (GHG) architecture to stabilize Si inside LiB electrodes. Instead of simply mixing both components, the novelty of the synthesis procedure lies in the in situ hydrothermal process, which was shown to successfully yield graphene oxide reduction, 3D graphene assembly production, and homogeneous distribution of Si@C NPs in the GHG matrix. Electrochemical characterizations in half-cells, on electrodes not containing additional conductive additive, revealed the importance of the protective C shell to achieve high specific capacity (up to 2200 mAh.g -1 ), along with good stability (200 cycles with an average Ceff > 99%). These performances are far superior to that of electrodes made with non-C-coated Si NPs or prepared by mixing both components. These observations highlight the synergetic effects of C shell on Si NPs, and of the single-step in situ preparation that enables the yield of a Si@C-GHG hybrid composite with physicochemical, structural, and morphological properties promoting sample conductivity and Li-ion diffusion pathways.
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معلومات مُعتمدة: SiBaLi flagship project Atomic Energy and Alternative Energies Commission
فهرسة مساهمة: Keywords: Li-ion battery; Si nanoparticles; carbon-coating; graphene; hydrogel; hydrothermal synthesis; silicon-based composite
تواريخ الأحداث: Date Created: 20230329 Latest Revision: 20230331
رمز التحديث: 20231215
مُعرف محوري في PubMed: PMC10051277
DOI: 10.3390/ma16062451
PMID: 36984331
قاعدة البيانات: MEDLINE
الوصف
تدمد:1996-1944
DOI:10.3390/ma16062451