Energy & Green Tech

German power giant RWE aims for zero carbon by 2040

German energy giant RWE said Monday it aims to achieve carbon neutrality by 2040, winding up fossil-fuel activities while building up renewable generation, after taking over parts of competitor EON.

Energy & Green Tech

High-performance sodium ion batteries using copper sulfide

Researchers presented a new strategy for extending sodium ion batteries' cyclability using copper sulfide as the electrode material. This strategy has led to high-performance conversion reactions and is expected to advance ...

Energy & Green Tech

Wind power vulnerable to climate change in India

The warming of the Indian Ocean, caused by global climate change, may be causing a slow decline in wind power potential in India, according to a new study from the Harvard John A. Paulson School of Engineering and Applied ...

Energy & Green Tech

3-D printing the next generation of batteries

Additive manufacturing, otherwise known as 3-D printing, can be used to manufacture porous electrodes for lithium-ion batteries—but because of the nature of the manufacturing process, the design of these 3-D printed electrodes ...

Energy & Green Tech

Knitting electronics with yarn batteries

When someone thinks about knitting, they usually don't conjure up an image of sweaters and scarves made of yarn that can power watches and lights. But that's just what one group is reporting in ACS Nano. They have developed ...

Energy & Green Tech

How to extend your phone's battery life

As mobile phone users, all we want is enough battery life to last the day. Frustratingly, the older the device, the less power it seems to have.

Energy & Green Tech

Unbalanced wind farm planning exacerbates fluctuations

If European countries cooperated better in the field of wind energy, wind power output would fluctuate less. This is the conclusion reached by a group of energy and climate researchers at ETH Zürich and Imperial College ...

Energy & Green Tech

'Virtual batteries' could lead to cheaper, cleaner power

In the power grid, supply and demand need to match exactly. If consumers demand more power than producers can supply, or if producers provide more power than consumers need, the result can be rolling blackouts.

Telecom

Optical fiber transmits one terabit per second

Nokia Bell Labs, Deutsche Telekom T-Labs and the Technical University of Munich (TUM) have achieved unprecedented transmission capacity and spectral efficiency in an optical communications field trial with a new modulation ...

Energy & Green Tech

Nanomaterials and lithium rechargeable batteries

(TechXplore)—In a review article in Nature Energy, Yongming Sun, Nian Liu, and Yi Cui from Stanford University survey how nanomaterials have advanced the field of lithium rechargeable batteries and what obstacles still ...

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Capacity

Capacity is the ability to hold a fluid, very similar to volume.

Capacity may also refer to:

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