Metal oxides (MOs) have attracted extensive attention because they possess various applications such as lithium-
ion batteries (LIBs), dye sensitized solar cells (DSSCs), fuel cells, catalysis, gas sensors, water splitting and supercapacitors
due to low cost and high compatibility with the environment. This paper is a review on recent patents and scientific
research literatures related to the synthesis, and energy storage and conversion of MOs in LIBs, DSSCs and supercapacitors.
These MOs are mainly transition MOs such as Co3O4, CoO, Fe2O3, Fe3O4, Mn3O4 and MnO2. Some patents and
scientific research literatures are also involved in MOs such as Cu2O, TiO2, NiO, SiO2, SnO, ZnO, SnO2, Zn2SnO4-SnO2
and ruthenium oxide. In addition, some problems existing with energy storage and conversion, and future research directions
are also addressed.
Keywords: Dye sensitized solar cells, energy storage and conversion, lithium-ion batteries, metal oxides, supercapacitors, Nanopowder, Submicron Powder, Photoanodes, fuel cells, gas sensors
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