Yttrium-modified Li₄Ti₅O₁₂as an effective anode material for lithium ion batteries with outstanding long-term cyclability and rate capabilities

Synthesis and electrochemical performance of F-doped Li4Ti5O12 for lithium-ion batteries

“…Some of metallic elements such as Mg, V, Mn, Fe, Cr, Yr, Ru, etc. doping on the Li + or Ti 4+ sites has been investigated constantly [9,[12][13][14][15][16][17]. However, to the best of our knowledge, the way of considering the anion replacing the O 2− site is rarely reported.…”

Al-doped Li2ZnTi3O8 as an effective anode material for lithium-ion batteries with good rate capabilities

“…So far, a series of ions (e.g. Sn 4+ , Mg 2+ , Ru 3+ , Al 3+ , V 5+ , Sr 2+ , Nb 5+ , La 3+ , Y 3+ and Br À [13][14][15][16][17][18][19][20][21][22][23][24]) have been doped into different cathode and anode materials, which enhance electronic conductivity and improve electrochemical performance as a matter of fact. However, up to now, no investigation on the high rate performance of Al-doped Li 2 ZnTi 3 O 8 , especially in the form of Li 2 ZnTi 3Àx Al x O 8 .…”

High rate capability core–shell lithium titanate@ceria nanosphere anode material synthesized by one-pot co-precipitation for lithium-ion batteries

“…The initial discharge capacity of the LTO-CR is 186.6 mAh g À1 at 0.2 C, which is higher than that of LTO (173.3 mAh g À1 ), and even higher than the theoretical capacity of spinel Li 4 Ti 5 O 12 (175 mAh g À1 ). Bai et al [13] and Yi et al [16] reported that the increased capacity may be attributed to lattice distortion induced by the substitution of doped ions for Ti 4þ and/or Li þ . Rietveld analysis of XRD data in this work illustrates the partial Ce 4þ dope into the Li 4 Ti 5 O 12 structure, expand the lattice due to the larger ionic radius of Ce 4þ (coordinate number (CN) ¼ 6, 0.87 A), which is larger than the corresponding radii for Ti 4þ (CN ¼ 6, 0.61 A) and Li þ (CN ¼ 6, 0.76 A).…”