Graphene/doped ceria nano-blend for catalytic oxygen reduction in non-aqueous lithium-oxygen batteries

MnCo2O4 Nanowires Anchored on Reduced Graphene Oxide Sheets as Effective Bifunctional Catalysts for Li–O2 Battery Cathodes

“…25 Figure 3b), the poly-crystalline nature of the MCO NWs can be further confirmed. [8,42] The elemental distribution of MCO NWs in the MCO@RGO composites wase xamined by energy-dispersive X-ray spectroscopy (EDX) elemental mapping. As the 1D MCO NWs and 2D RGO sheetsare composited with each other,t he electrical conductivity of the composite could be furtheri ncreased compared with that of the MCO NWs without RGO sheets,a sl isted in Table S1 (Supporting Information).…”

First-principles study of the initial oxygen reduction reaction on stoichiometric and reduced CeO2(111) surfaces as a cathode catalyst for lithium–oxygen batteries

“…It is necessary to check the experimental process to understand the best path here. In most of the experimental battery preparation procedures, the electrolytes containing Li ions firstly contact the cathode 10,17 . In the SOV CeO2 cathode, surfaces with no, one, two or more Li atoms pre-adsorbed are co-existed.…”

“…Lin et al 16 used CeO2 as the cathode catalyst for the ORR in the LOBs and concluded that the crystal structure of the CeO2 was critical to its electro-catalytic performance. Ahn et al 10 reported that a relative high specific capacity can be achieved when graphene/doped ceria nanoblend was used as cathode catalyst a in the LOBs. Recently, our experimental study showed that the LOBs with a cathode of CeO2 nanoparticles in-situ grown on nitrogen doped reduced graphene oxide (CeO2@N-RGO) exhibited superior electrocatalytic activity and cyclability 17 .…”

“…To improve the electrochemical performance of the LOBs, different catalysts have been introduced into the oxygen cathode, such as metal oxides (MnO2, Co3O4, and CeO2) [7][8][9][10] , precious metals (Pt, Au and Ru) and their alloys [11][12][13][14] , as well as metal carbides 15 . Among all these materials, ceria (CeO2) is one of the promising catalysts due to its ability to catalyze both processes of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER).…”

A Review of Carbon-Composited Materials as Air-Electrode Bifunctional Electrocatalysts for Metal–Air Batteries

“…Overall, these enhanced electrochemical performances can be attributed to the composition between carbon and CoO and can possibly be associated with the integration of carbon dotting and oxygen vacancies into CoO as well as the synergetic effects of the two components. This promising strategy of compositing carbon with oxides to create positive effects on MAB ORR and OER has inspired more research into exploring and using different oxides, such as La 2 O 3 [151], zirconium doped ceria [152], and cobalt-manganese mixed oxide (Co x Mn 1-x O) [153].…”