In contrast, the carbon dioxide and methane emissions associated with blue hydrogen reduce the benefit of a hydrogen economy and lead to a climate penalty at high leakage rate or blue hydrogen share. The leakage rate and the hydrogen production pathways are key leverages to reach a clear climate...
Currently, catalyst design for electrocatalytic hydrogen evolution reaction (HER) is guided by the classic volcano theory in which hydrogen adsorption free energy (∆GH) on catalyst surface is used as an indicator of the catalytic efficiency7. In this theory, neither too strong nor too weak a...
The life cycle costs of the target fuels are computed and several key factors are examined to identify the economical feasibilities of the target systems: fuel cell vehicle (FCV) price, social cost of greenhouse gases (GHGs) and regulated air emissions (CO, VOC, SOx, NOx, PM), fuel effic...
The main components of a hydrogen energy system include hydrogen generation arrangement; hydrogen storage; distribution and delivery systems (long or short distance); and the means of converting the chemical energy of hydrogen into a desirable form of energy (e.g. electricity) for end consumers. ...
Rock type is also a key factor that enables the δ18O migration in groundwater. Fig.7c-e shows the relationship between anions from different types of rock and the δ18O value of geothermal water. As indicated in Fig. 7c, the abundance of δ18O value happens along with the increase ...
of Ni-activated TMCs. The doping of Ni atoms on the surface of TMCs could effectively regulate the d-electron structure, which can not only significantly enhance the exposed active sites, but also improve the intrinsic catalytic activity (Fig.4d, e). Additionally, the high specific surface ...
Neighboring Cu atoms work in synergy to lower the energy of key water adsorption and dissociation intermediates. The reported catalyst shows a low overpotential of only 41 mV at 10 mA cm−2 and Tafel slope of 53.4 mV dec−1 for the alkaline hydrogen evolution reaction, ...
Number of H2moleculesTetrahedral interstitial non-equivalent position of hydrogen atomsΔEDFTNbMo-ΔENbDFT(kcal/mol) 11–7–46.6 3–2–49.6 21,3–6,8–107.3 1,3–6,8*–120.0 1,7–1,7–64.6 31,7–1,7–3,5–99.8 2,6–2,6–3,5–78.1 ...
Design Key Points of Carbon Fiber Full-wrapped with Aluminium Liner Hydrogen Cylinder for Vehicle 来自 Semantic Scholar 喜欢 0 阅读量: 56 作者:YJ Liu,YJ Jin 摘要: In the national 863 program of the eleventh five-year plan,the carbon fiber full-wrapped with aluminium liner cylinder as the ...
Interest in securing energy production channels from renewable sources is higher than ever due to the daily observation of the impacts of climate change. A key renewable energy harvesting strategy achieving carbon neutral cycles is artificial photosynthe