Low-temperature synthesis of macroporous LiTi2(PO4)3/C with superior lithium storage properties
RSC Advances Pub Date: 2015-01-23 DOI: 10.1039/C4RA16155F
Abstract
We report a “l(fā)ow-temperature” LiTi2(PO4)3 (LTP) phase (LT-LTP) with modified structural, microstructural and electrochemical properties. A macroporous LT-LTP phase is prepared by a simple sol–gel procedure followed by calcination at 550 °C. LT-LTP exhibits an unusual distribution of lithium ions within the NASICON-type structure and, consequently, a new two-step lithium-intercalation regime. The material, after compositing with carbon, shows excellent lithium storage properties with a retained capacity >100 mA h g?1 after 800 cycles at a 10 C charge–discharge rate. Macroporous LT-LTP/C composites exhibit a remarkably enhanced cycle performance compared to conventional LTP/C composites.
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Journal Name：RSC Advances
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CAS no.: 89640-58-4
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