Electrochemical Reduction of TiO₂/Al₂O₃/C to Ti₃AlC₂and Its Derived Two-Dimensional (2D) Carbides

Abstract

14Ti 3 AlC 2 has been directly synthesized from TiO 2 /Al 2 O 3 /C mixture precursors 15 (3TiO 2 /0.5Al 2 O 3 /1.5C and 2TiO 2 /0.5Al 2 O 3 /C) by a molten salt electrolysis process at 16 900 °C and 3.2 V in molten CaCl 2 . The influence of initial carbon content on the 17

Electrolysis Synthesis of Carbides and Carbon Dioxide Capture in Molten Salts

“…By changing the type Reproduced with permission. [81] Copyright 2018, Electrochemical Society, Inc. b) SEM images of Ti 3 AlC 2 electrolysis synthesized at 3.0 V for 4 h in CaCl 2 melt at 950 °C. Reproduced with permission.…”

“…Electrolysis synthesis of multiple carbides in molten salt. a) Schematic diagram of electrochemical process of TiO 2 /Al 2 O 3 /C cathode to Ti 3 AlC 2 .Reproduced with permission [81]. Copyright 2018, Electrochemical Society, Inc. b) SEM images of Ti 3 AlC 2 electrolysis synthesized at 3.0 V for 4 h in CaCl 2 melt at 950 °C.…”

Molten salt synthesis and formation mechanism of Ti3AlC2: A new path from Ti2AlC to Ti3AlC2

“…employed molten salts with Ti, Al, and C elementary powders and obtained nanosized Ti 3 AlC 2 powder at 950°C; however, the ratio of the salt‐to‐raw material reached 10:1, and the soaking time is a little bit longer, which is inefficient 29 . Recently, the electrochemical method came into sight, where the product MAX phase can be obtained in a very mild condition, but the preparation efficiency is relatively low 30 …”

“…29 Recently, the electrochemical method came into sight, where the product MAX phase can be obtained in a very mild condition, but the preparation efficiency is relatively low. 30 Obviously, researchers have been seeking a highly effective approach to obtain Ti 3 AlC 2 , but the progress is relatively limited. However, in our previous work, we successfully synthesized high-purity V 2 AlC and V 4 AlC 3 at 750 and 1050 • C respectively, by the newly reported alloy strategy in molten salts (MSAS).…”

Electrosynthesis of Two-Dimensional TiC and C Materials from Ti3SiC2in Molten Salt

“…Another is the selective extraction process (such as the preparation of 2D transition metal carbides) which is based on the difference in stability/reactivity between the different components of the corresponding 3D counterparts. 6 However, since the outstanding electronic properties of graphene were discovered, so far the most studied 2-D material is graphene, 7 which is comprised of atomically thin layers of sp 2 -bonded carbon atoms connected by aromatic inplane bonds. Other 2-D layered materials, such as hexagonal boron nitrides, 8 transition metal sulfides, 9 metal oxides and hydroxides, 10,11 and zeolites, 12 have also attracted much-renewed attention.…”