Hierarchical Sandwich-Like Structure of Ultrafine N-Rich Porous Carbon Nanospheres Grown on Graphene Sheets as Superior Lithium-Ion Battery Anodes

Authors

Zhiqiang Xie, Department of Mechanical & Industrial Engineering, Louisiana State University , Baton Rouge, Louisiana 70803, United States.
Ziyang He, Department of Mechanical & Industrial Engineering, Louisiana State University , Baton Rouge, Louisiana 70803, United States.
Xuhui Feng, Department of Chemical & Biological Engineering, Colorado School of Mines , Golden, Colorado 80401, United States.
Wangwang Xu, Department of Mechanical & Industrial Engineering, Louisiana State University , Baton Rouge, Louisiana 70803, United States.
Xiaodan Cui, Department of Mechanical & Industrial Engineering, Louisiana State University , Baton Rouge, Louisiana 70803, United States.
Jiuhong Zhang, Department of Chemistry & Biochemistry, Kent State University , Kent, Ohio 44240, United States.
Cheng Yan, School of Materials Science & Engineering, Nanyang Technological University , Singapore 639798, Singapore.
Moises A. Carreon, Department of Chemical & Biological Engineering, Colorado School of Mines , Golden, Colorado 80401, United States.
Zheng Liu, School of Materials Science & Engineering, Nanyang Technological University , Singapore 639798, Singapore.
Ying Wang, Department of Mechanical & Industrial Engineering, Louisiana State University , Baton Rouge, Louisiana 70803, United States.

Document Type

Article

Publication Date

4-27-2016

Abstract

A sandwich-like, graphene-based porous nitrogen-doped carbon (PNCs@Gr) has been prepared through facile pyrolysis of zeolitic imidazolate framework nanoparticles in situ grown on graphene oxide (GO) (ZIF-8@GO). Such sandwich-like nanostructure can be used as anode material in lithium ion batteries, exhibiting remarkable capacities, outstanding rate capability, and cycling performances that are some of the best results among carbonaceous electrode materials and exceed most metal oxide-based anode materials derived from metal orgainc frameworks (MOFs). Apart from a high initial capacity of 1378 mAh g(-1) at 100 mA g(-1), this PNCs@Gr electrode can be cycled at high specific currents of 500 and 1000 mA g(-1) with very stable reversible capacities of 1070 and 948 mAh g(-1) to 100 and 200 cycles, respectively. At a higher specific current of 5000 mA g(-1), the electrode still delivers a reversible capacity of over 530 mAh g(-1) after 400 cycles, showing a capacity retention of as high as 84.4%. Such an impressive electrochemical performance is ascribed to the ideal combination of hierarchically porous structure, a highly conductive graphene platform, and high-level nitrogen doping in the sandwich-like PNCs@Gr electrode obtained via in situ synthesis.

Publication Source (Journal or Book title)

ACS applied materials & interfaces

First Page

10324

Last Page

33

Recommended Citation

Xie, Z., He, Z., Feng, X., Xu, W., Cui, X., Zhang, J., Yan, C., Carreon, M. A., Liu, Z., & Wang, Y. (2016). Hierarchical Sandwich-Like Structure of Ultrafine N-Rich Porous Carbon Nanospheres Grown on Graphene Sheets as Superior Lithium-Ion Battery Anodes. ACS applied materials & interfaces, 8 (16), 10324-33. https://doi.org/10.1021/acsami.6b01430