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Concentrated solar reactor generates unprecedented amounts of hydrogen

Photoelectrochemical device also produces usable heat and oxygen and could be commercialized in the near future

Lithium-ion batteries break energy density record

New design of lithium-ion battery could benefit applications such as electric aviation

Bacterial enzyme produces energy from atmospheric hydrogen

An enzyme that turns the hydrogen in air into electricity could provide a new source of energy

Solar-driven hydrogel purifies contaminated water

Loofah-inspired material could supply enough drinking-quality water to meet a person’s daily requirements

Hydrogen-producing solar cells mimic photosynthesis

One device offers a record-breaking solar-to-hydrogen efficiency while a second harvests water from the air and turns it into hydrogen when exposed to sunlight

Illustration showing sun shining on an array of solar-energy-to-hydrogen devices located in shallow water. A lens system directs UV and visible light to the devices and infrared light to heat the water around them.

Surface-science modalities shed new light on lithium diffusion in battery materials

Established surface-science tools could help industrial scientists to fast-track the evaluation of advanced materials for energy-storage applications

Phase heterojunction solar cell is a first

New photovoltaics concept is based on junctions between different crystalline phases of a light-absorbing perovskite material

A new type of solar cell based on heterojunctions between different crystalline phases of the same light-absorbing material

Thinner solar cells are more robust to space radiation

Gallium arsenide-based photovoltaic could be used as a power source for satellites in demanding space environments

Photo of ultrathin on-chip solar cells fabricated from a stack of semiconducting materials. The cells are coloured as green squares and include an ultrathin layer of light-absorbing GaAs, which is key to their radiation tolerance

Floating artificial leaves could produce solar-generated fuel

New devices might make it possible to locate solar farms on water, not land

A spoonful of sugar makes the dendrites go down

Adding sucrose containing hydroxyl groups to battery electrolytes slows down unwanted dendrite growth while preventing electrode corrosion

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