{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Li J"],"funding":["Ningbo S&T Innovation 2025 Major Special Program","National Natural Science Foundation of China","Ningbo Natural Science Foundation"],"pagination":["1301"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC10976018"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["29(6)"],"pubmed_abstract":["With its substantial theoretical capacity, silicon (Si) is a prospective anode material for high-energy-density lithium-ion batteries (LIBs). However, the challenges of a substantial volume expansion and inferior conductivity in Si-based anodes restrict the electrochemical stability. To address this, a yolk-shell-structured Si-carbon composite, featuring adjustable void sizes, was synthesized using tin (Sn) as a template. A uniform coating of tin oxide (SnO<sub>2</sub>) on the surface of nano-Si particles was achieved through a simple annealing process. This approach enables the removal of the template with concentrated hydrochloric acid (HCl) instead of hydrofluoric acid (HF), thereby reducing toxicity and corrosiveness. The conductivity of Si@void@Carbon (Si@void@C) was further enhanced by using a high-conductivity carbon layer derived from pitch. By incorporating an internal void, this yolk-shell structure effectively enhanced the low Li<sup>+</sup>/electron conductivity and accommodated the large volume change of Si. Si@void@C demonstrated an excellent electrochemical performance, retaining a discharge capacity of 735.3 mAh g<sup>-1</sup> after 100 cycles at 1.0 A g<sup>-1</sup>. Even at a high current density of 2.0 A g<sup>-1</sup>, Si@void@C still maintained a discharge capacity of 1238.5 mAh g<sup>-1</sup>."],"journal":["Molecules (Basel, Switzerland)"],"pubmed_title":["Simple and Safe Synthesis of Yolk-Shell-Structured Silicon/Carbon Composites with Enhanced Electrochemical Properties."],"pmcid":["PMC10976018"],"funding_grant_id":["2023J348","2022Z022","22309195"],"pubmed_authors":["Wu M","Du Q","Li J","Zhai G","He H"],"additional_accession":[]},"is_claimable":false,"name":"Simple and Safe Synthesis of Yolk-Shell-Structured Silicon/Carbon Composites with Enhanced Electrochemical Properties.","description":"With its substantial theoretical capacity, silicon (Si) is a prospective anode material for high-energy-density lithium-ion batteries (LIBs). However, the challenges of a substantial volume expansion and inferior conductivity in Si-based anodes restrict the electrochemical stability. To address this, a yolk-shell-structured Si-carbon composite, featuring adjustable void sizes, was synthesized using tin (Sn) as a template. A uniform coating of tin oxide (SnO<sub>2</sub>) on the surface of nano-Si particles was achieved through a simple annealing process. This approach enables the removal of the template with concentrated hydrochloric acid (HCl) instead of hydrofluoric acid (HF), thereby reducing toxicity and corrosiveness. The conductivity of Si@void@Carbon (Si@void@C) was further enhanced by using a high-conductivity carbon layer derived from pitch. By incorporating an internal void, this yolk-shell structure effectively enhanced the low Li<sup>+</sup>/electron conductivity and accommodated the large volume change of Si. Si@void@C demonstrated an excellent electrochemical performance, retaining a discharge capacity of 735.3 mAh g<sup>-1</sup> after 100 cycles at 1.0 A g<sup>-1</sup>. Even at a high current density of 2.0 A g<sup>-1</sup>, Si@void@C still maintained a discharge capacity of 1238.5 mAh g<sup>-1</sup>.","dates":{"release":"2024-01-01T00:00:00Z","publication":"2024 Mar","modification":"2025-04-26T11:23:09.164Z","creation":"2025-04-06T13:42:08.34Z"},"accession":"S-EPMC10976018","cross_references":{"pubmed":["38542937"],"doi":["10.3390/molecules29061301"]}}