Journal
NANOTECHNOLOGY
Volume 31, Issue 13, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/ab5f91
Keywords
Sb nanocrystals; hollow carbon microspheres; lithium-ion battery; anode
Funding
- National Natural Science Foundation of China [51301117, 11502158, 51671140]
- International Cooperation Project Foundation of Shanxi Province, China [201603D421037, 2015081053]
- Shanxi Provincial Foundation for Leaders of Disciplines in Science, China
- Top Young Academic Leaders of Shanxi
- '1331 project' Key Innovation Teams of Shanxi Province
- Higher School Science and Technology Innovation Project Foundation of Shanxi Province, China [2016128]
- Shanxi Province Science Foundation [201801D121281]
- Shanxi Scholarship Council of China [2015-034]
- NSF [CMMI-1634540]
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There is a great need to develop sustainable and clean energy storage devices and systems of high-energy and high-capacity densities. In this work, we synthesize antimony (Sb) nanocrystal-anchored hollow carbon microspheres (Sb@HCMs) via the calcination of cultivated yeast cells and the reduction of SbCl3 in an ethylene glycol solution on the surface of hollow carbon microspheres. The Sb@HCMs possess hollow and porous structure, and the Sb is present in the form of nanocrystals. Using the Sb@HCMs as the active-electrode material, we assemble lithium (Li)-ion half cells and full cells and investigate their electrochemical performance. The Li-ion half cells possess a charge capacity of 605 mA h g(-1) after 100 cycles at a current density of 100 mA g(-1) and a charge capacity of 469.9 mA h g(-1) at a current density up to 1600 mA g(-1), which is much higher than the theoretical capacity of 372 mA h g(-1) for commercial graphite electrode. The Li-ion full cells with Sb@HCMs//LiCoO2 deliver a charge capacity of 300 mA h g(-1) at a current density of 0.2 A g(-1) after 50 cycles, and have potential in applications of energy storage.
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