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: | 19 Apr 2018 00:18 |
| 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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