Microstructure in the transition region and steady-state region of ice-templated sintered lithium titanate Li4Ti5O12 materials fabricated with and without sucrose

Solute concentration effects on microstructure and the compressive strength of ice‐templated sintered lithium titanate

“…Similar behavior has been reported in other studies. 10,33 CTAB had a greater impact on η. For 0.02g/cm 3 CTAB, η decreased to 973 ± 180 mPa⋅s compared to 3998 ± 452 mPa⋅s for LTO-DI water suspensions.…”

“…In ice-templated ceramics, wall thickness and pore size increase along the sample height, that is, in the growth direction of ice crystals. 9,10,14 Thus SEM images revealed microstructure changes within 3mm height along the growth direction. Microstructure will be discussed in Sections 3.3.1-3.3.3, pore area distributions in Section 3.3.4, and processing-microstructure relationships in Section 3.3.5.…”

“…The authors have recently investigated electrochemical performance and compressive mechanical properties of ice-templated sintered lithium titanate oxide (LTO, chemical composition Li 4 Ti 5 O 12 ) anode materials. [7][8][9][10] The improved rate capability of ice-templated LTO anode was attributed to better Li-ion transport due to low pore tortuosity compared to conventional LTO anode. 7 The highest rate capability (increased retention of capacity with increasing rate of charge/discharge) in LIB was achieved when icetemplated sintered LTO anode was combined with a higher conductivity electrolyte.…”

“…The authors recently showed that sucrose, a watersoluble additive less explored in ice-templating, can effectively tune the microstructure and compressive strength of ice-templated sintered LTO materials. 9,10 With the increasing sucrose concentration, templated morphology changed from lamellar to dendritic and compressive strength increased as high as eightfold. Parai et al 10 also investigated the influence of sucrose concentration on microstructure in the transition and steady-state regions.…”

“…9,10 With the increasing sucrose concentration, templated morphology changed from lamellar to dendritic and compressive strength increased as high as eightfold. Parai et al 10 also investigated the influence of sucrose concentration on microstructure in the transition and steady-state regions. The high water solubility of sucrose is beneficial for processibility.…”