Hydrogen titanates as potential proton conducting fuel cell electrolytes

The mechanochemical stability of hydrogen titanate nanostructures

“…Hydrogen trititanate in the form of crystalline powder with a ramsdellite-type structure [25] can be synthesized from layered crystalline Na 2 Ti 3 O 7 by the ion exchange of the interlayer sodium cations with H 3 O + ions [24]. Because of the high proton conductivity of H 2 Ti 3 O 7 , this material has been studied as a potential solid-oxide electrolyte for fuel cells [26] and as sensing material in hydrogen sensors [27].…”

Chemical composition and phase identification of sodium titanate nanostructures grown from titania by hydrothermal processing

“…Alkaline titanates have attracted increasing attention [4][5][6][7], particularly for the applications based on their high photocatalytic activity, such as fuel cell electrolytes, cation exchangers for the treatment of radioactive liquid waste [8,9], and many other applications [10][11][12][13].…”

Effect of annealing temperature on phase transition and optical property of titanate nanotubes prepared by ion exchange approach

“…The rolling formation mechanism was also well accepted, that was, two-dimensional nanosheets, in which TiO 6 octahedrons connected in edge-sharing method with each other, rolled into multi-walled spiral nanotubes, with some H 2 O molecules locating in the interlayer space loosely [11]. Hence, this kind of material maybe have high potential applications in lithium battery if the interlayer protons can be replaced by lithium ions Li + and in fuel cells when high proton conductivity can be carried out [11,13,14]. However, until now, most of researchers still lay emphasis upon the formation mechanism of this kind of nanotubes.…”