Battery and solid oxide fuel cell materials

Ga-doped Ca12Al14O33mayenite oxide ion conductors: synthesis, defects, and electrical properties

“…[1][2][3] The oxide ion conducting electrolyte plays a key role in the working temperature of a SOFC. [4][5][6] The yttrium-stabilized ZrO 2 (YSZ), as the traditional and most widely used electrolyte in industry, can be applied only at a temperature higher than 750 C. [7][8][9] This high-working temperature raises issues concerning undesired reactions between the electrolyte and electrode materials, and also creates thermal stresses during thermal cycling. Thus, the development of new oxide ion conductors with considerably high conductivity for use in intermediate temperature (500-750 C) SOFCs is an urgent and pressing need.…”

“…Thus, the development of new oxide ion conductors with considerably high conductivity for use in intermediate temperature (500-750 C) SOFCs is an urgent and pressing need. [9][10][11][12] The oxide ion conductivity of aluminate Ca 12 Al 14 O 33 , a stable ceramic material, was rst identied by M. Lacerda et al in 1988. 13 M Lacerda et al reported that the oxide ion conduction ($ 1.5 Â 10 À3 S cm À1 ) of Ca 12 Al 14 O 33 materials was only slightly lower than that of YSZ, making Ca 12 Al 14 O 33 a competitive candidate for SOFC electrolyte, if the oxide ion conductivity could be further improved through metal cationic doping strategy.…”

Ion Transport in Na2M2TeO6: Insights from Molecular Dynamics Simulation

“…Development of high-energy-density batteries, fuel cells, 1,2 and super capacitors are an integral part of renewable energy technologies 3 to replace the conventional fossil fuels. Fast ion conductors (FICs) form a critical component of these devices and are a lead topic of concurrent academic and industrial research.…”

New apatite‐type oxide ion conductors Ce9.33+xSi6O26+δ: Structures, phase stabilities, electrical properties, and conducting mechanisms

“…Due to its high operating temperature, it has high technical requirements for the selection of electrode materials and long‐term stability. This limits the development of SOFCs 5‐10 and, therefore, gives impetus to explore new types of oxide ion conductors with high conductivity in the middle‐ and low‐temperature range (400–700℃) 7,11,12 …”