A simple reduction process to synthesize MoO/C composites with cage-like structure for high-performance lithium-ion batteries
Physical Chemistry Chemical Physics, ISSN: 1463-9076, Vol: 15, Issue: 22, Page: 8831-8837
2013
- 49Citations
- 25Captures
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Article Description
Large-scale MoO/carbon composites with a cage-like nanostructure have been synthesized by a simple hydrothermal reduction process. During the hydrothermal process, ammonium molybdate tetrahydrate ((NH )MoO·4HO) was employed as starting material and ascorbic acid as a structure directing agent, reductive agent and carbon source. MoO/C nanospheres with diameters of about 15-25 nm were interconnected to form a cage-like architecture. Time-dependent experiments illustrated that the cage-like structure was transformed from tightly packed MoO nanoparticles. Furthermore, with a water-soluble binder (sodium alginate), the cage-like MoO/C composites exhibited a high discharge capacity and significantly improved cycling performance compared to previously reported MoO-based anode materials. The electrodes with the MoO/C composites can deliver a capacity of 692.5 mA h g after 80 charge-discharge cycles at a current density of 200 mA g. After C-rate measurement, the battery still can maintain excellent cycling stability (about 550 mA h g reversible capacity retained even after 475 cycles). The excellent electrochemical performance can be ascribed to the cage-like structure, which integrates three advantages: porous structure, interconnected MoO/C framework and small nano-crystals. © 2013 The Owner Societies.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84878306565&origin=inward; http://dx.doi.org/10.1039/c3cp44707c; http://www.ncbi.nlm.nih.gov/pubmed/23646353; https://xlink.rsc.org/?DOI=c3cp44707c; https://dx.doi.org/10.1039/c3cp44707c; https://pubs.rsc.org/en/content/articlelanding/2013/cp/c3cp44707c
Royal Society of Chemistry (RSC)
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