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Cathode Material - Europe PMC

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Last Updated: 27 September 2022

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Synergistic Modification of Fe-Based Prussian Blue Cathode Material Based on Structural Regulation and Surface Engineering.

Because of its abundant iron deposits and high theoretical capacity, Fe-based Prussian blue composite is considered as one of the most viable cathode materials for sodium-ion batteries. Cu preferentially substitutes Fe HS in the Fe-PB lattice and Cu doping reduces the bandgap, according to the density functional theory study findings. Our experiments show that CuO coating can be more effective locations, reduce side reactions, and possibly raise the activity of Fe HS. FeCu-PB@CuO has a significant initial discharge capacity of 123. 5 mAh -1 at 0. 1 A g -1 due to the synergistic effect of Cu doping and CuO coating's synergistic effect, FeCu-PB@CuO has a large initial discharge capacity of 123. 5 mAh g -1. Therefore, the synergistic upgrade scheme of metal ion doping and metal oxide coating has a significant application success and can be extended to other electrode materials.

Source link: https://europepmc.org/article/MED/36107796


Guest water hinders sodium-ion diffusion in low-defect Berlin green cathode material.

Na x Fe[Fe 6 ], 1-y u00b7 n H 2 O is a highly useful cathode material for sodium-ion batteries due to its high theoretical capacity of u223 c170 mA h g -1 and cheap raw materials, making it one of Prussian blue analogues. We've examined a low-defect Berlin green Na 0. 30 Fe[Fe 6 ] 0. 94 o. g. [Fe 6 ] 0. 94 n H2O with various water content corresponding to 10, 8, 6, and 2 wt% in this context. The effect of water on the electrochemical properties of BG was scientifically investigated. During successive scans compared to hydrated samples, the electrode with the lowest water content showed the fastest Na + ion extraction/extraction as shown by the larger CV peak currents. The findings provide fundamental insight for designing PBAs as electrode materials with increased electrochemical stability in energy storage applications.

Source link: https://europepmc.org/article/MED/36102869


Quantitative analysis of diffuse electron scattering in the lithium-ion battery cathode material Li 1.2 Ni 0.13 Mn 0.54 Co 0.13 O 2 .

Depends on the number of stacking faults and twins in the crystal, the intensity of the 1D diffuse scattering in Li 1. 2 Ni 0. 2 Mn 0. 13 O 2 depends on the number of stacking faults and twins in the crystal. Both the stacking fault probability and the proportion of the different twins in the crystal were improved using an evolutionary algorithm in DISCUS. The approach was applied to reciprocal space sections that were reconstructed from 3D electron diffraction results since they have less dynamical properties than in-zone electron diffraction patterns. The short-range order parameters in submicrometer-sized crystals can thus be improved from diffuse scattering in single-crystal electron diffraction measurements using an evolutionary algorithm in DISCUS.

Source link: https://europepmc.org/article/MED/36071802


Highly Loaded and Binder-Free Molybdenum Trioxide Cathode Material Prepared Using Multi-Arc Ion Plating for Aqueous Zinc Ion Batteries.

Aqueous zinc-ion batteries are becoming more popular as the use of energy storage devices continues to expand, thanks to benefits such as safety and abundant zinc supply. Hi u03b1-MoO 3 @CFC u00b0C >; u2013b1-MoO 3 @CFC -CFC was loaded directly on carbon fiber cloth via multi-arc ion plating to obtain Mo@CFC, which was then oxidatively heated in a muffle furnace for 20 min at 600 u00b0C for high mass loading. When compared to a cell made from commercial MoO 3 using conventional slurry-based electrode techniques, it was found that CFC-loaded u03b1-MoO 3 cathode material had noticeably improved electrochemical results. The findings show that the heavily packed cathode material with a high charge density could be used for future flexible device assembly and applications.

Source link: https://europepmc.org/article/MED/36079336

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions