Names | |
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Other names
Nickel niobium oxide
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Identifiers | |
3D model (JSmol)
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Properties | |
Nb2NiO6 | |
Molar mass | 340.50256 g/mol[1] |
Appearance | Yellow powder[2] |
Hazards[3] | |
GHS labelling: | |
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Danger | |
H302, H315, H317, H319, H334, H341, H350, H360, H372, H412 | |
P202, P260, P264, P270, P271, P272, P273, P280, P284, P301+P312, P302+P352, P304+P340, P305+P351+P338, P308+P311, P342+P311, P362+P364, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Nickel niobate is a complex oxide which as a solid material has found potential applications in catalysis and lithium batteries.
Nickel niobate has been added to other elements forming bismuth nickel niobate (Bi
2O
3-NiO-Nb
2O
5), providing a dense ceramic body at low sintering temperatures. Cubic pyrochlore, tetragonal pyrochlore, and other unknown phases were found.[4]
Single-phase perovskite ceramics of Pb(Ni
1/3Nb
2/3)O
3 (PNN) have been prepared by the columbite precursor method. Dielectric studies showed that ceramic Pb(Ni
1/3Nb
2/3)O
3 is a typical relaxor ferroelectric with properties like those of its single-crystals.[5]
Nickel niobate has been examined for use as a catalyst to reduce 4-nitrophenol due to a photo-synergistic effect that exploits the synergy between thermal active sites and photogenerated electrons.[6]
Nickel niobate has also been examined in an "open and regular" crystalline form for use as the anode in a lithium ion battery. It forms a porous, nano-scale structure that eliminates the dendrite formation that can cause short circuits and other problems. The material offers energy density of 244 mAh g−1 and retains 80%+ of its capacity across 20k cycles. The manufacturing process is straightforward and does not require a clean room.[7] The anode offers a diffusion coefficient of 10−12 cm2 s−1 at 300 K, which allows fast charging/dischargine at high current densities, yielding capacities of 140 and 50 mAh g−1 for 10 and 100C respectively.[8]