Highly controlled synthesis of multi-shelled NiO hollow microspheres for enhanced lithium storage properties

Li, Hao and Ma, Haoran and Yang, Mei and Wang, Bao and Shao, Hui and Wang, Lei and Yu, Ranbo and Wang, Dan (2017) Highly controlled synthesis of multi-shelled NiO hollow microspheres for enhanced lithium storage properties. Materials Research Bulletin, 87. pp. 224-229. ISSN 0025-5408

Abstract

Nickel oxide microspheres with porous multi-shelled structure were synthesized via a sequential templating approach using carbonaceous microspheres (CMSs) as sacrificial agent. When applied as anode material for lithium ion batteries, the as-prepared porous triple-shelled NiO hollow spheres show excellent cycling performance and outstanding high-rate capability, as well as high specific capacity. During all the 100 discharge-charge cycles under a current density of 500 mA/g, the porous triple-shelled NiO hollow spheres can stably deliver a reversible capacity of ca. 789 mAh/g. Even at a high current density of 2000 mA/g, the specific discharge capacity of the porous triple-shelled NiO hollow spheres is still as high as 721 mAh/g, which is twice larger than that of commercial graphite. The superior electrochemical performance can be attributed to the porous multi-shelled hollow microstructure which guarantees more lithium-storage sites, a shorter lithium-ion diffusion length, and sufficient void space to buffer the volume expansion.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 07 Jul 2017 03:48
Last Modified: 07 Jul 2017 03:48
Uncontrolled Keywords: anode; high-rate capability; lithium-ion battery; multi-shelled structure; NiO; anode material for lithium ion batteries; discharge-charge cycle; electrochemical performance; high current densities; high rate capability; high specific capacity; lithium storage properties; specific discharge capacity; lithium and alloys; electron tubes; data storage, equipment and techniques; inorganic compounds
Fields of Research : 03 Chemical Sciences > 0303 Macromolecular and Materials Chemistry > 030399 Macromolecular and Materials Chemistry not elsewhere classified
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970103 Expanding Knowledge in the Chemical Sciences
Identification Number or DOI: 10.1016/j.materresbull.2016.12.005
URI: http://eprints.usq.edu.au/id/eprint/31929

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