Why Coconuts Could Be The Hydrogen Storage Material Of The Future.

Hydrogen is a potential renewable fuel because it can easily be generated from water using electrolysis. It also burns cleanly to produce water vapour. The hope is that it could also be distributed using the same global network of liquid fuel transport that moves petrol around the planet.

But there numerous problems with this dream of a hydrogen-based economy. One of them is that hydrogen is difficult to store efficiently. Hydrogen gas has a poor energy density by volume compared to petrol. In fact, there is at least 60 percent more hydrogen in a litre of gasoline then there is in a litre of pure liquid hydrogen. In other words, hydrogen will always require bigger tanks.

En bref : Batterie sans métal rare - Production d'hydrogène à partir du gaz de pétrole liquéfié.

=> Nouvelle batterie composée de matériaux abondants

L'équipe du professeur Atsuo Yamada de la Graduate School of Engineering de l'université de Tokyo a établi une nouvelle cathode Na-Fe pour les batteries. Cette nouvelle cathode ne contiendrait aucun métal rare et pourrait facilement être synthétisée, permettant ainsi le développement de batteries sodium-ion à plus haute performance que les lithium-ion. Cette batterie pourrait créer un courant de 3,8V.

=> Production d'hydrogène à partir du gaz de pétrole liquéfié

IEA slashes renewable energy forecast.

Policy uncertainty and grid integration risks are driving a slowdown in global renewable energy deployment, especially in OECD economies, according to a new International Energy Agency (IEA) report published today (28 August).

Clean energy capacity investment will still rise to $1.61 trillion by 2020. But in its first global investment outlook, the agency predicted a $20 million drop in yearly new clean energy funding by the decade’s end to $230 billion.

The New Power Generation: This Fuel Cell Startup Could Spark a Revolution.

There’s more than one way to get energy out of natural gas. For decades, one of the most promising methods – and also most difficult to pull off ‑ has been the fuel cell.

A fuel cell works like a battery, using a simple chemical reaction to provide energy. In fuel cells, this reaction involves hydrogen molecules abundant in natural gas and oxygen from ordinary air.

It sounds easy enough, but the process is full of pitfalls. Car companies, for example, have tried to make fuel cells work as a replacement for the internal combustion engine for more 20 years without commercial success.

Thermoelectric Material to Hit Market Later This Year.

California-based Alphabet Energy plans to begin selling a new type of material that can turn heat into electricity. Unlike previous thermoelectrics, as such materials are known, it is abundant, cheap, and nontoxic.

Warning of $1tn gamble on high-cost oil projects.

Over $1 trillion is being gambled on high-cost oil projects that will never see a return if the world's governments fulfill their pledge to tackle climate change, according to a new report.

McKinsey: Myths and realities of clean technologies.

Don’t be fooled by high-profile setbacks. The cleantech sector is gaining steam—with less and less regulatory assistance.

Europe abandons hopes of US-style shale gas revolution.

hale gas has had a “minimal impact” on the US’s manufacturing industry, and will have even less significance for Europe, according to a new report by the Institute for Sustainable Development and International Relations (IDDRI). In Europe, industrialists are abandoning hopes of a similar revolution, at least in the short- to medium-term.

The IDDRI report’s findings echo a warning from the UK business minister, Vince Cable, earlier this month that shale gas will not be a reality for at least a decade.

Une invention pour aider les producteurs d'énergie renouvelable à démarrer.

Le Prof. Wilsun Xu de l'Université d'Alberta vient de déposer une licence dans le secteur privé (entreprise DX3) pour son invention qui pourrait s'avérer être une formidable technologie permettant à davantage de producteurs d'énergies renouvelables de contribuer aux réseaux d'énergie électrique existants.

Cleaner Long-Haul Engines Guzzle Diesel or Natural Gas.

Technology that allows diesel engines to instead run primarily on natural gas could provide a economical way for railroads and shipping companies to shift their vast transportation systems over to natural gas.

Such a shift could lower greenhouse gas emissions, since natural gas when burned emits 15 to 20 percent less carbon dioxide than diesel. It could also save shippers money and lower the cost of shipped goods, since the natural gas boom in the United States has made natural gas far cheaper than diesel (see “Natural Gas Changes the Energy Map”).

Idiomas

Mensaje de error

Energias