3D hierarchical flower-like NiMoO4@Ni3S2 composites on Ni foam for high-performance battery-type supercapacitors

Recent developments and future perspectives on energy storage and conversion applications of nickel molybdates

“…Hydrothermal synthesis covers the largest share of exertions witnessed for the preparation and modulation of properties of NiMoO 4 28,32,54,63,65,69,74,75,77,78,123,161,165,166,168,170‐173,179,183,184,187,192‐194,198,200,202,206,210‐212,214,215,229,231‐234,256,258‐263,265‐268,270,271,273,275,279‐281,284,286‐288,290,291,294‐298,301,303,305‐313,315‐319,322,324,327‐331,333‐335,337,339‐347,349,352,353,356,358‐360,363‐366,368,370‐374,376‐380 . Typically, it includes a host of strategies towards crystallizing substances from high‐temperature watery mixtures at high vapor pressures.…”

“…This is so because this strategy offers the most convenient processes and yet conducive outcomes. Table 6 is to impart a brief account of a host of developments in catalytic properties of NiMoO 4 done involving heterostructures and hybrids 121,123,256‐382 . in many cases, doping, defect and/or morphology engineering have been amalgamated with the heterostructure for superior enhancement in catalytic properties either to generate more surface area or more population of active sites or for other special necessities as summarized in Table 6.…”

“…A few other elegant works focusing supercapacitive performance of NiMoO 4 ‐based composite materials have been shown in Table 11 291,295,303,306,319,331,341 . These essentially consist of a combination of NiMoO 4 with other inorganic substances apart from oxides and CNMs.…”

“…Apart from the above, many other composite materials have been developed involving NiMoO 4 , and a few notables such works have been shown in Table 14 161,260,295,296,319,331,367 . It is important to consider that not just association of other substance but shape, size, morphology, availability of active site‐everything individually and collectively contribute to enhance the synergistic effect for exhibiting better electrochemical performance.…”

Flexible Solid-State Asymmetric Supercapacitor with High Energy Density and Ultralong Lifetime Based on Hierarchical 3D Electrode Design

“…Compared with the other two types of materials, battery-type materials have higher capacity and energy density for the fast redox reactions on the surface coupled with those in the bulk, and they have accordingly become the focus of research. Currently, battery-type materials are mainly transition metal-based compounds, such as Co 3 O 4 , , Ni­(OH) 2 , , NiMoO 4 , , NiCo 2 O 4 , , and NiCo 2 S 4 . , Among these candidates, NiMoO 4 and NiCo 2 O 4 have aroused much attention because of their high theoretical capacity, adjustable morphology, and low cost. − Despite the fact that NiMoO 4 and NiCo 2 O 4 have achieved remarkable development in recent years, there is still a huge gap between the actual capacity and theoretical capacity caused by the low electronic conductivity. − Besides, the unsatisfied cycling stability and rate performance further limit the application of battery-type materials in supercapacitors.…”