A highly active nanostructured metallic oxide cathode for aprotic Li–O₂batteries

Abstract

A new nanostructured metallic metal oxide shows excellent ORR/OER properties in a Li–air cell, and highlights the importance of controlling the cathode interface to achieve better Li–O2cell round-trip efficiency.

A carbon-free ruthenium oxide/mesoporous titanium dioxide electrode for lithium-oxygen batteries

“…Some of the alternative cathode materials suggested recently include TiC [7], Ti 4 O 7 [8], indium tin oxide (ITO) [9], MnO 2 [10,11], Co 3 O 4 [12,13], and (Co, Mn) 3 O 4 [14]. Bruce and his co-workers [7] ascribed the stability of TiC cathodes to the surface TiO 2 layer on TiC.…”

Wave-like free-standing NiCo2O4 cathode for lithium–oxygen battery with high discharge capacity

“…The discharge/charge process of LieO 2 battery bases on the reversible reaction between oxygen and lithium: 2Li þ O 2 # Li 2 O 2 [5]. Benefited from the favorable potential of this reaction (2.96 V vs. Li/Li þ ), and the low density of the reactants, non-aqueous LieO 2 battery has a high theoretical energy density of 3505 Wh kg À1 (based on Li 2 O 2 ), which is far beyond that of commercial Li-ion batteries [6]. However, the formation of solid state Li 2 O 2 on the surface of cathode as discharge products also gives rise to a number of problems in cathode designing of LieO 2 cells.…”

Interfacial redox reaction-directed synthesis of silver@cerium oxide core–shell nanocomposites as catalysts for rechargeable lithium–air batteries

“…To overcome the drawbacks, great efforts have been devoted to exploring efficient electrocatalysts to accelerate the kinetic reactions and thus to improve the reversibility of batteries. Among the reported cathode materials, modified carbon materials [21,22], noble metal (Au, Pt) [23,24] and transition metal oxides [9,12,25,26] have been extensively studied as cathode materials to reduce the ORR and OER overpotential.…”