2014
DOI: 10.1039/c4ra08501a
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Enhanced lithium storage capability of a dual-phase Li4Ti5O12–TiO2–carbon nanofiber anode with interfacial pseudocapacitive effect

Abstract: Hydrothermal treatments of electrospun titanium dioxide/carbon nanofibers (TiO2/CNFs) in LiOH solution were performed in a temperature range of 130–190 °C, and then followed by a thermal treatment at 600 °C in N2 atmosphere.

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Cited by 25 publications
(27 citation statements)
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“…It is well established that the pseudocapacitive effect can be induced due to the presence of abundant interfaces in the LTO-TiO 2 composites, which is conducive to enhancing the specific capacity and rate capability of electrode materials. Similar results were also reported in these previous studies 29, 4244 . By contrast, the pure LTO and LTO-RT have no obviously pseudocapacitive effect, suggesting their lower grain boundary density than the LTO-RT-AT.…”
Section: Resultssupporting
confidence: 92%
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“…It is well established that the pseudocapacitive effect can be induced due to the presence of abundant interfaces in the LTO-TiO 2 composites, which is conducive to enhancing the specific capacity and rate capability of electrode materials. Similar results were also reported in these previous studies 29, 4244 . By contrast, the pure LTO and LTO-RT have no obviously pseudocapacitive effect, suggesting their lower grain boundary density than the LTO-RT-AT.…”
Section: Resultssupporting
confidence: 92%
“…These differences are probably ascribed to the increased oxygen vacancies in these LTO-TiO 2 composites than those in pure LTO 28 . The incremental oxygen vacancies can decrease electron cloud density surrounding the titanium cores, therefore the electronic screening effect in the nanoparticles would be strengthened, causing the slightly decreased bonding energy values of the Ti 2p 1/2 and Ti 2p 3/2 signals 29 .
Figure 2Ti 2p and O 1 s XPS spectra of ( a , d ) pure LTO, ( b , e ) LTO-RT and ( c , f ) LTO-RT-AT.
…”
Section: Resultsmentioning
confidence: 99%
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“…Even better performances were obtained from combining dual-phase Li 4 Ti 5 O 12 eTiO 2 with CNFs, prepared by immersing TiO 2 /CNF in a LiOH solution at high temperatures. This imparted a pseudocapacitive effect, with a 204 mA h g À1 discharge capacity after 200 cycles at 100 mA g À1 from an initial capacity of~220 mA h g À1 [208].…”
Section: Metal Oxide/carbon Composite Nanofibersmentioning
confidence: 99%
“…However, the carbonaceous materials have some safety concerns, particularly when used for high power batteries. [14][15][16] Thus, spinel Li 4 Ti 5 O 12 is considered as a promising alternative to carbonaceous anodes. [7][8][9] Therefore, searching for alternative anode materials with excellent rate-capability and good safety property becomes the urgent topic for the LIBs field.…”
Section: Introductionmentioning
confidence: 99%