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Abstract The hollow TiO 2 anode material has received a lot of attention for the next generation LIBs because of its exceptional consistency, environmental friendly, and low volume change during lithiation/delithiation. Despite this low lithium-ion diffusivity and poor reversible theoretical capacity, practical application of the new anatase TiO 2 anode materials in practical use suffers.
Source link: https://doi.org/10.1186/s11671-022-03719-y
Battery, hydrogen, and ammonia-powered fuel cells that meet the IMO's 2050 deadline are all necessary to comply with the IMO standards by 2050. However, safety and risk assessments must be done to support any new marine system design's acceptance. Therefore, a qualitative Hazard Identification study was undertaken for potential hydrogen, battery, and ammonia solutions, as well as recommendations for future safe designs. Hydrogen is usually stored in liquefied tanks to minimize the possibility of large accumulations of gas in the air in the event of leakage, which can result in fire or explosion hazards. Batteries can be used to produce electric energy from stored energy, but they are also associated with high fire risks. They are placed in battery holds/compartments, in which fire doors and efficient firefighting equipment are mandatory to prevent fire spread to neighboring areas and reduce the fire duration respectively. Leakage in the fuel cell room due to pipe damage and fire in the battery room was deemed the most hazardous to hydrogen and battery versions respectively, according to Leakage. On the other hand, ammonia is classified as a low reactive gas and explosion, so it should be a concern of only enclosed spaces at concentrations close to the stoichiometry. Because of the high toxicity of ammonia, one of the biggest challenges for ammonia is ammonia leakage from various parts of the system that could result in injuries or fatalities to the crew.
Source link: https://doi.org/10.5957/imdc-2022-297
V 2 O 3 is a good candidate for AZIB cathodes, but it is unsatisfied cycling conditions. V 2 O 3 was oxidized to a safe V 2 O 5 nH 2 O during charging, and the carbon shell could lead to the combustion of V 2 O 3 to V 2 O 5 - O 5 nH 2 O. After V 2 O 3 was oxidized to V2 O 5 mA h g a ft. 336 mA h g u22121, it was a much greater discharge capacity of V 2 O 3 mA h g u22121 to 336 mA h g u22121, indicating a higher Zn 2+ -storage capability of V 2 O 5 h g u22121 t h 2 O 2 O 2 O 5 oxidized to 336 t o h mA h t g h a h 2 O 336 mA t 2 O 336 h u22121, v2 O 336 h mA b u22121 h mA o h 2 O 336 h t 2 O 5 u22121 u21121 g h a t nH 2 O tO g nH 2 O 5 The presented strategy of releasing carbon shells and fundamental insights into the role of carbon shells in this research has contributed to the success of highly stable AZIBs.
Source link: https://doi.org/10.3389/fchem.2022.956610
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