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Yolk-shell-structured microspheres composed of N-doped-carbon-coated NiMoO4 hollow nanospheres as superior performance anode materials for lithium-ion batteries.
Nanoscale 2019; 11(2):631-638N

Abstract

Novel yolk-shell-structured microspheres consisting of N-doped-carbon-coated metal-oxide hollow nanospheres are designed as efficient anode materials for lithium-ion batteries and synthesized via a spray pyrolysis process. A NiMoO4 yolk-shell architecture formed via spray pyrolysis is transformed into equally structured NiSe2-MoSe2 composite microspheres. Because of the complementary effect between the Ni and Mo components that prevents severe crystal growth during selenization, NiSe2-MoSe2 nanocrystals are uniformly distributed over the yolk-shell structure. Then, the yolk-shell-structured NiSe2-MoSe2 microspheres are oxidized, which yields microspheres composed of NiMoO4 hollow nanospheres by nanoscale Kirkendall diffusion. Uniform coating with polydopamine and a subsequent carbonization process produce uniquely structured microspheres consisting of N-doped-carbon-coated NiMoO4 hollow nanospheres. The discharge capacity of the yolk-shell-structured NiMoO4-C composite microspheres for the 500th cycle at a current density of 3.0 A g-1 is 862 mA h g-1. In addition, the NiMoO4-C composite microspheres show a high reversible capacity of 757 mA h g-1 even at an extremely high current density of 10 A g-1. The synergetic effect between the hollow nanospheres comprising the yolk-shell structure and the N-doped carbon coating layer results in the excellent lithium-ion storage performance of the NiMoO4-C composite microspheres.

Authors+Show Affiliations

Department of Materials Science and Engineering, Korea University, Anam-Dong, Seongbuk-Gu, Seoul 136-713, Republic of Korea. yckang@korea.ac.kr.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30564807

Citation

Park, Gi Dae, et al. "Yolk-shell-structured Microspheres Composed of N-doped-carbon-coated NiMoO4 Hollow Nanospheres as Superior Performance Anode Materials for Lithium-ion Batteries." Nanoscale, vol. 11, no. 2, 2019, pp. 631-638.
Park GD, Hong JH, Lee JK, et al. Yolk-shell-structured microspheres composed of N-doped-carbon-coated NiMoO4 hollow nanospheres as superior performance anode materials for lithium-ion batteries. Nanoscale. 2019;11(2):631-638.
Park, G. D., Hong, J. H., Lee, J. K., & Kang, Y. C. (2019). Yolk-shell-structured microspheres composed of N-doped-carbon-coated NiMoO4 hollow nanospheres as superior performance anode materials for lithium-ion batteries. Nanoscale, 11(2), pp. 631-638. doi:10.1039/c8nr08638a.
Park GD, et al. Yolk-shell-structured Microspheres Composed of N-doped-carbon-coated NiMoO4 Hollow Nanospheres as Superior Performance Anode Materials for Lithium-ion Batteries. Nanoscale. 2019 Jan 3;11(2):631-638. PubMed PMID: 30564807.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Yolk-shell-structured microspheres composed of N-doped-carbon-coated NiMoO4 hollow nanospheres as superior performance anode materials for lithium-ion batteries. AU - Park,Gi Dae, AU - Hong,Jeong Hoo, AU - Lee,Jung-Kul, AU - Kang,Yun Chan, PY - 2018/12/20/pubmed PY - 2018/12/20/medline PY - 2018/12/20/entrez SP - 631 EP - 638 JF - Nanoscale JO - Nanoscale VL - 11 IS - 2 N2 - Novel yolk-shell-structured microspheres consisting of N-doped-carbon-coated metal-oxide hollow nanospheres are designed as efficient anode materials for lithium-ion batteries and synthesized via a spray pyrolysis process. A NiMoO4 yolk-shell architecture formed via spray pyrolysis is transformed into equally structured NiSe2-MoSe2 composite microspheres. Because of the complementary effect between the Ni and Mo components that prevents severe crystal growth during selenization, NiSe2-MoSe2 nanocrystals are uniformly distributed over the yolk-shell structure. Then, the yolk-shell-structured NiSe2-MoSe2 microspheres are oxidized, which yields microspheres composed of NiMoO4 hollow nanospheres by nanoscale Kirkendall diffusion. Uniform coating with polydopamine and a subsequent carbonization process produce uniquely structured microspheres consisting of N-doped-carbon-coated NiMoO4 hollow nanospheres. The discharge capacity of the yolk-shell-structured NiMoO4-C composite microspheres for the 500th cycle at a current density of 3.0 A g-1 is 862 mA h g-1. In addition, the NiMoO4-C composite microspheres show a high reversible capacity of 757 mA h g-1 even at an extremely high current density of 10 A g-1. The synergetic effect between the hollow nanospheres comprising the yolk-shell structure and the N-doped carbon coating layer results in the excellent lithium-ion storage performance of the NiMoO4-C composite microspheres. SN - 2040-3372 UR - https://www.unboundmedicine.com/medline/citation/30564807/Yolk_shell_structured_microspheres_composed_of_N_doped_carbon_coated_NiMoO4_hollow_nanospheres_as_superior_performance_anode_materials_for_lithium_ion_batteries_ L2 - https://doi.org/10.1039/c8nr08638a DB - PRIME DP - Unbound Medicine ER -