Influence of gradual cobalt substitution on lithium nickel phosphate nano-scale composites for high voltage applications

From Materials to Cell: State-of-the-Art and Prospective Technologies for Lithium-Ion Battery Electrode Processing

“…Additionally, LFP has achieved or nearly achieved its theoretical capacity (170 mAh/g) in many cases, , while the best Li­(M)­O 2 materials are still only ∼70% of their theoretical capacities (∼285 mAh/g). Less mature Li­(M)­PO 4 olivine materials include LiMnPO 4 (LMP), LiCoPO 4 (LCP), and LiNiPO 4 (LNP), which are all capable of higher energy densities than LFP due to nominal voltages of 4.1, 4.75, and 5.1 V, respectively. ,, However, LMP suffers from even lower electronic conductivity than LFP, while LCP and LNP have voltages higher than the upper limit of the electrochemical stability of most liquid electrolytes.…”

Optimization of dielectric heating parameters in the production of high‐voltage LiNiPO4‐core and carbon‐shell ceramics

“…These values are in good agreement with the literature. 7,26 There are only minor differences between the lattice parameters and the cell volumes, since the exact same calcination parameters apply to all powders obtained with different solvothermal process temperatures and microwave exposure times. A possible explanation is that diffusion in the solution environment plays a critical role in the crystallization of the olivine phase throughout the microwave and solvothermal process.…”

“…1 These electrochemical performance values are superior to the comparable energy density isostructural LiFePO 4 cathode which have a specific energy density of approximately 580 WhÁkg À1 , and are commercially available in applications such as hybrid and/or full electric vehicles and can produce 3.45 V vs Li/Li + . [5][6][7] In addition to the conductive surface coatings 8,9 and ion doping 7,10 used to overcome the above-described obstacles, synthetic methods have been attempted using morphology control in order to improve the diffusion abilities and to reduce the particle size. 4 The successful application of the LiNiPO 4 cathode active material, however, has not been achieved due to its low ionic and electronic conductivity, and limited oxidative stability of conventional electrolytic solutions.…”

“…4 The successful application of the LiNiPO 4 cathode active material, however, has not been achieved due to its low ionic and electronic conductivity, and limited oxidative stability of conventional electrolytic solutions. [5][6][7] In addition to the conductive surface coatings 8,9 and ion doping 7,10 used to overcome the above-described obstacles, synthetic methods have been attempted using morphology control in order to improve the diffusion abilities and to reduce the particle size. 11 In these synthetic routes, softchemical syntheses such as the sol-gel, 7,12 hydrothermal or solvothermal 13,14 and polyol methods 15 allow for kinetic control, and are used extensively because of their proven effectiveness.…”

Fluorescent delivery vehicle containing cobalt oxide–umbelliferone nanoconjugate: DNA/protein interaction studies and anticancer activity on MF7 cancer cell line

“…The binding of the ligand and nanoparticle yielded single spherical nanoconjugates during the modified synthesis at room temperature. 36,37 The cobalt ion gets reduced in the presence of tannic acid and forms nanoconjugate. The single crystalline nature is confirmed by HRTEM and SEM images ( Fig.…”