The density functional the-ory calculations and electrochemical results reveal that nitrogen doping can weaken the adsorption of hydrogen and the generated CO2, resulting in an enhancement of hydrogen evolution reaction (HER) and UEOR activity. In addition, N-doping can also promote the generation ...
The large cell potential and reversible characteristics of the H2/Cl2 and H2/Br2 couples permit high energy storage density and efficient energy conversion. When used as flow batteries, the fluid nature of the reactants in the hydrogen-halogen systems has several advantages over power sources ...
能量密度Energy density 是指在一定的空间或质量物质中储存能量的大小。 能量密度就是单位体积里所含的能量。 电场与磁场是分布在全空间中的,而且它们是有能量的,这些能量在全空间中的分布是不均匀的,越靠近场源(即电荷或电流)场的能量越密集——单位体积里所含能量越多;反之,离场源越远,场能量越稀疏——能量...
Carbon-free energy: a review of ammonia- and hydrazine-based electrochemical fuel cells 来自 国家科技图书文献中心 喜欢 0 阅读量: 167 作者:NV Rees,RG Compton 摘要: Most low-temperature fuel cells are based on the hydrogen fuel cell in some form, with its high power density and clean ...
As a result, under a sulfur loading of 2.5 mg cm-2, the lithium-sulfur battery with ZnO/BiOI/CNT/S as cathode reveals a considerable initial specific capacity of 1267 mAh g-1 at a current density of 0.1C. Even the current density increased to 1C, the capacity can reach as 873.4 mAh...
Harvesting energy from the ambient is a promising approach to fulfil decentralized energy demands and facilitate the transition to low-carbon economy. Moisture-sorption-based energy harvesting (MSEH) is a promising strategy for obtaining heat, cold and e
Green hydrogen offers a clean and emissions free renewable source of high energy density that helps work towards the global net zero emissions goal. Green hydrogen, which is produced via the hydrogen evolution reaction (HER), requires a technological breakthrough in the electrolyzer; the latter ...
Synthesis of the CuNP/PAAS/MBA/PEG nanocomposite PCMs The energy storage behavior of the PCMs which used PEG as working material was realized by the segmental motion of PEG in the system. In other words, the energy storage density of the material would be influenced due to the inability of...
Moreover, a promising maximum power density of Fe6-M/C-3 as cathode catalyst was also demonstrated in proton exchange membrane fuel cells (PEMFCs) measurements. Therefore, this binary ligand approach to the fabrication of hierarchically por-ous structures would also have significant implications for...