首页|Fe3O4 nanoparticles encapsulated in graphitized and in-plane porous carbon nanocages derived from emulsified asphalt for a high-performance lithium-ion battery anode

Fe3O4 nanoparticles encapsulated in graphitized and in-plane porous carbon nanocages derived from emulsified asphalt for a high-performance lithium-ion battery anode

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In this work,C@Fe3O4 composites were prepared through a typical template method with emulsified asphalt as carbon source,ammonium ferric citrate as transition metal oxide precursor,and NaCl as template.As an anode for lithium-ion batteries,the optimized C@Fe3O4-1∶2 composite exhibits an excellent reversible capacity of 856.6 mA·h·g-1 after 100 cycles at 0.1 A·g-1 and a high capacity of 531.1 mA·h·g-1 after 300 cycles at 1 A·g-1,much better than those of bulk carbon/Fe3O4 prepared without NaCI.Such remarkable cycling performance mainly benefits from its well-designed structure:Fe3O4 nanoparticles generated from ammonium ferric citrate during pyrolysis are homogenously encapsulated in graphitized and in-plane porous carbon nanocages derived from petroleum asphalt.The carbon nanocages not only improve the conductivity of Fe3O4,but also suppress the volume expansion of Fe3O4 effectively during the charge discharge cycle,thus delivering a robust electrochemical stability.This work realizes the high value-added utilization of low-cost petroleum asphalt,and can be extended to application of other transition-metal oxides-based anodes.

emulsified asphaltFe3O4 nanoparticlein-plane porelithium-ion batteryanode

Dandan Hu、Linxiu Sui、Jinjin Shi、Dongfeng Li、Yuxuan Zhang、Yimeng Li、Bingbing Hu、Xiaoya Yuan

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School of Materials Science and Engineering,Chongqing Jiaotong University,Chongqing 400074,China

Institute of Advanced Functional Materials,Chongqing Jiaotong University,Chongqing 400074,China

Chongqing 2D Materials Institute,Liangjiang New Area,Chongqing 400044,China

National Natural Science Foundation of ChinaChongqing Special Key Project of Technological Innovation and Application DevelopmentTeam Building Project for Graduate Tutors in ChongqingResearch and Innovation Program for Graduate Students in ChongqingNational Innovation and Entrepreneurship Projects for College Students

51402030CSTB2022TIAD-KPX0031JDDSTD20220062023S0090202310618015

2024

10.1007/s11706-024-0687-7

材料学前沿
高等教育出版社

材料学前沿

CSTPCD
影响因子：0.337
ISSN：2095-025X
年,卷(期)：2024.18(2)