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Preparation and Performance of Carbon-Coated Hollow SiOx Anode Materials
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Donglin HE1, 2, 3, Sen SUN1, Ping LI1, Xuanhui QU1
Mining and Metallurgical Engineering | 2024, 44(4) : 67 - 71
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Mining and Metallurgical Engineering | 2024, 44(4): 67-71
• SPECIAL ISSUE: BATTERY MATERIALS •
Preparation and Performance of Carbon-Coated Hollow SiOx Anode Materials
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Donglin HE1, 2, 3, Sen SUN1, Ping LI1, Xuanhui QU1
Affiliations
  • 1.Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
  • 2.School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan, China
  • 3.Shudao Investment Group Co., Ltd., Chengdu 610095, Sichuan, China
Published: 2024-08-01 doi: 10.3969/j.issn.0253-6099.2024.04.012
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With tetraethyl orthosilicate as silicon source and cetyltrimethylammonium bromide (CTAB) as a surfactant and pore-forming agent, a carbon-coated mesoporous hollow silicon oxide as anode material was synthesized by adopting the modified stöber method and carbonthermal reduction. The results show that different volume ratio of ethanol to water can bring important impact to the particle size, morphology and performance of SiOx nanospheres. With ethanol and water in a low volume ratio, the obtained nanomaterial has a low sphericity and becomes oval; as the ratio increases, the nanomaterial becomes larger in size; with ethanol and water in a ratio of 0.45, the obtained SiOx nanospheres are around 300 mm in size. The button batteries assembled with such nanospheres deliver a reversible specific capacity of 813 mAh/g after 200 cycles at a current density of 100 mA/g, and 704 mAh/g after 1 200 cycles at 500 mA/g, retaining 82% of this capacity, with a capacity attenuation rate of 0.015% after each cycle.

SiOx  /  anode material  /  hollow structure  /  carbon coating  /  nanosphere
Donglin HE, Sen SUN, Ping LI, Xuanhui QU. Preparation and Performance of Carbon-Coated Hollow SiOx Anode Materials[J]. Mining and Metallurgical Engineering, 2024 , 44 (4) : 67 -71 . DOI: 10.3969/j.issn.0253-6099.2024.04.012
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Article Info
doi: 10.3969/j.issn.0253-6099.2024.04.012
  • Receive Date：2024-05-23
  • Online Date：2026-03-18
  • Published：2024-08-01
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History
  • Received：2024-05-23
Affiliations
    1.Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
    2.School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan, China
    3.Shudao Investment Group Co., Ltd., Chengdu 610095, Sichuan, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2024.04.012
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
Number of
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Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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