• Source: Nickel niobate

Nickel niobate is a complex oxide which as a solid material has found potential applications in catalysis and lithium batteries.




Properties






Complexes


Nickel niobate has been added to other elements forming bismuth nickel niobate (Bi2O3-NiO-Nb2O5), providing a dense ceramic body at low sintering temperatures. Cubic pyrochlore, tetragonal pyrochlore, and other unknown phases were found.
Single-phase perovskite ceramics of Pb(Ni1/3Nb2/3)O3 (PNN) have been prepared by the columbite precursor method. Dielectric studies showed that ceramic Pb(Ni1/3Nb2/3)O3 is a typical relaxor ferroelectric with properties like those of its single-crystals.




Applications


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.
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. 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.




References






External links


"MatWeb - The Online Materials Information Resource". www.matweb.com. Retrieved 2021-11-17.
Zhilun, Gui; Longtu, Li; Hongqing, Lin; Xiaowen, Zhang (1990-01-01). "Low temperature sintering of lead magnesium nickel niobate zirconate titanate (PMN-PNN-PZT) piezoelectric ceramic, with high performances". Ferroelectrics. 101 (1): 93–99. Bibcode:1990Fer...101...93Z. doi:10.1080/00150199008016505. ISSN 0015-0193.
Robert, G.; Maeder, M. D.; Damjanovic, D.; Setter, N., eds. (2001). "Synthesis of lead nickel niobate-lead zirconate titanate solid solutions by a B-site precursor method". Journal of the American Ceramic Society. 84 (12): 2869–2872. doi:10.1111/j.1151-2916.2001.tb01107.x. ISSN 0002-7820.

Kata Kunci Pencarian:

• Kamus rumus kimia
• Nickel niobate
• Lithium niobate
• Nickel–Strunz classification
• Phosphate mineral
• Sulfate mineral
• Niobium
• Diamond turning
• Dana classification system
• Native element mineral
• Halide mineral