منابع مشابه
Dissolution and ionization of sodium superoxide in sodium–oxygen batteries
With the demand for high-energy-storage devices, the rechargeable metal-oxygen battery has attracted attention recently. Sodium-oxygen batteries have been regarded as the most promising candidates because of their lower-charge overpotential compared with that of lithium-oxygen system. However, conflicting observations with different discharge products have inhibited the understanding of precise...
متن کاملIntrinsic Conductivity in Sodium−Air Battery Discharge Phases: Sodium Superoxide vs Sodium Peroxide
The primary discharge product in sodium−air batteries has been reported in some experiments to be sodium peroxide, Na2O2, while in others sodium superoxide, NaO2, is observed. Importantly, cells that discharge to NaO2 exhibit low charging overpotentials, while those that discharge to Na2O2 do not. These differences could arise from a higher conductivity within the superoxide; however, this expl...
متن کاملA rechargeable room-temperature sodium superoxide (NaO2) battery.
In the search for room-temperature batteries with high energy densities, rechargeable metal-air (more precisely metal-oxygen) batteries are considered as particularly attractive owing to the simplicity of the underlying cell reaction at first glance. Atmospheric oxygen is used to form oxides during discharging, which-ideally-decompose reversibly during charging. Much work has been focused on ap...
متن کاملFundamentals of Magnetism
Magnets play a crucial role in a modern life; as we know, a vast number of devices are employed in the electromagnetic industry. In ancient times human beings experienced magnetic phenomena by utilizing natural iron minerals, especially magnetite. It was not until modern times that magnetic phenomena were appreciated from the standpoint of electromagnetics, to which many physicists such as Oers...
متن کاملThe magnetism of La1.2Sr1.8Mn2O7
The critical behaviour of La1.2Sr1.8Mn2O7 has been revisited by means of static macroscopic magnetic properties measurements. We present a renewed insight on its equilibrium properties near the critical point (TC ∼ 108 K) including the determination of the fundamental characteristics of a magnetic system (anisotropy, critical exponents and crossovers in the vicinity of the Curie temperature). I...
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ژورنال
عنوان ژورنال: CrystEngComm
سال: 2014
ISSN: 1466-8033
DOI: 10.1039/c3ce41349g