Table 1 Summary of recent advances in cross-linked hybrid metal oxides

From: Cross-linking dots on metal oxides

Hybrid Metal Oxide Cross-linker Morphology Properties Limitations Ref.
MnO/C Alginate Ultrasmall MnO nanoparticles in porous carbon High specific capacity
Enhanced rate performance
Long cycle life
Aggregation of larger particles during cycling
Capacity fading after first discharge cycle
Co3O4/C Alginate Hierarchical nanoporous structures High rate performance
Minimal capacitance loss
High cycling stability
Lower specific capacitance at higher carbonization temperatures due to particle aggregation
Decreased specific capacitance at increased scan rates
V2O5/graphene Thiourea 3-dimensional porous aerogels High specific capacitance
Good long-term cycling
Decreased interlayer spacing of graphene sheets upon annealing
Incomplete phase transition of crystalline V2O5 at 300 °C
CdSe/TiO2 Mercaptopropionic acid Network of CdSe quantum dot-TiO2 nanocrystal heterostructure Photocatalytic hydrogen generation Decomposition of cross-linkers during the long-term photocatalytic reaction 15
TiO2/boron oxide Perhydro-xylated dodecaborate clusters Hybrid molecular boron oxide material containing embedded TiO2 nanocrystals Fast electron transfer rate
Energy storage capability
Photocatalytic activity under visible light
Low electrical conductivity compared to other metal oxides 16