首页|F127 assisted fabrication of Ge/rGO/CNTs nanocomposites with three-dimensional network structure for efficient lithium storage

F127 assisted fabrication of Ge/rGO/CNTs nanocomposites with three-dimensional network structure for efficient lithium storage

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To solve the volume expansion and poor electrical conductivity of germanium-based anode materi-als,Ge/rGO/CNTs nanocomposites with three-dimensional network structure are fabricated through the dispersion of polyethylene-polypropylene glycol(F127)and reduction of hydrogen.An interesting phe-nomenon is discovered that F127 can break GeO2 polycrystalline microparticles into 100 nm nanopar-ticles by only physical interaction,which promotes the uniform dispersion of GeO2 in a carbon net-work structure composed of graphene(rGO)and carbon nanotubes(CNTs).As evaluated as anode mate-rial of Lithium-ion batteries,Ge/rGO/CNTs nanocomposites exhibit excellent lithium storage performance.The initial specific capacity is high to 1549.7 mAh/g at 0.2 A/g,and the reversible capacity still retains 972.4 mAh/g after 100 cycles.The improved lithium storage performance is attributed to that Ge nanopar-ticles can effectively slow down the volume expansion during charge and discharge processes,and three-dimensional carbon networks can improve electrical conductivity and accelerate lithium-ion transfer of anode materials.

F127 assisted fabricationGe/rGO/CNTs nanocompositesThree-dimensional carbon networkLithium-ion batteriesCycle stability

Hui Gu、Mingyue Gao、Kuan Shen、Tianli Zhang、Junhao Zhang、Xiangjun Zheng、Xingmei Guo、Yuanjun Liu、Fu Cao、Hongxing Gu、Qinghong Kong、Shenglin Xiong

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School of Environmental and Chemical Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China

Jiangsu Hengshen Co.,Ltd.,Zhenjiang 212314,China

School of the Environment and Safety engineering,Jiangsu University,Zhenjiang 212013,China

Key Laboratory of the Colloid and Interface Chemistry,Ministry of Education,School of Chemistry and Chemical Engineering,Shandong University,Ji'nan 250100,China

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2024

10.1016/j.cclet.2023.109273

中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCD
影响因子：0.771
ISSN：1001-8417
年,卷(期)：2024.35(9)