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Electrochemical Performance of Dual-Layer Carbon-Coated SiOx Anode Materials
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Fan LIANG, Lezhi YANG, Xiaoming XI, Feiyue TU, Li WANG, Tao CHEN, Shuang WANG, Yunfeng LIU
Mining and Metallurgical Engineering | 2023, 43(6) : 148 - 152
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Mining and Metallurgical Engineering | 2023, 43(6): 148-152
• MATERIALS •
Electrochemical Performance of Dual-Layer Carbon-Coated SiOx Anode Materials
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Fan LIANG, Lezhi YANG, Xiaoming XI, Feiyue TU, Li WANG, Tao CHEN, Shuang WANG, Yunfeng LIU
Affiliations
  • Changsha Research Institute of Mining and Metallurgy Co Ltd, Changsha 410012, Hunan, China
Published: 2023-12-01 doi: 10.3969/j.issn.0253-6099.2023.06.032
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To address the problems of low conductivity and poor cycling performance of silicon oxide as negative electrode material, polyacrylamide (PAM) was adopted as a carbon source for the first carbon coating, and the methane-acetylene mixture was used as a gas-phase carbon source for the second coating by chemical vapor deposition to prepare nitrogen-containing double-layer carbon-coated silicon oxide anode materials (SiOx@ DC-N). Compared with pure gas-phase coated (SiOx@ GC) and pure liquid-phase coated (SiOx@ LC) silicon oxide anode material, SiOx@ DC-N exhibits excellent rate performance and cycling stability, showing that the specific capacity is 850.1 mAh/g at a current density of 4C (1C=1 500 mA/g). The 18650 cylindrical batteries prepared by using a mixed graphite in a ratio of 5∶95 can have a capacity retention rate of 92.70% after 700 cycles of charging and discharging at a current density of 1C.

nitrogen doping  /  double-layer carbon-coating  /  polyacrylamide  /  silicon anode  /  lithium-ion battery  /  anode material
Fan LIANG, Lezhi YANG, Xiaoming XI, Feiyue TU, Li WANG, Tao CHEN, Shuang WANG, Yunfeng LIU. Electrochemical Performance of Dual-Layer Carbon-Coated SiOx Anode Materials[J]. Mining and Metallurgical Engineering, 2023 , 43 (6) : 148 -152 . DOI: 10.3969/j.issn.0253-6099.2023.06.032
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Year 2023 volume 43 Issue 6
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doi: 10.3969/j.issn.0253-6099.2023.06.032
  • Receive Date：2023-06-28
  • Online Date：2026-03-05
  • Published：2023-12-01
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  • Received：2023-06-28
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    Changsha Research Institute of Mining and Metallurgy Co Ltd, Changsha 410012, Hunan, China
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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
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
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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