Scientists just demonstrated a seawater hydrogen fuel cell that generates electricity from dissolved hydrogen in ocean water while simultaneously producing fresh drinking water as its only waste product

 

Scientists just demonstrated a seawater hydrogen fuel cell that generates electricity from dissolved hydrogen in ocean water while simultaneously producing fresh drinking water as its only waste product — addressing energy and water scarcity simultaneously.

A team from King Abdullah University of Science and Technology developed a selective electrocatalyst membrane that extracts dissolved molecular hydrogen from seawater electrochemically without requiring desalination as a pretreatment step. The membrane's nanoporous structure allows hydrogen to permeate while blocking salt, bacteria, and organic compounds. Hydrogen oxidation at the anode generates 0.94 volts at 180 milliamperes per square centimeter — a power density competitive with conventional hydrogen fuel cells. Water produced at the cathode is discharged as fresh water at 99.97% purity — potable without further treatment.

A 1-square-meter stack deployed on a coastal vessel generates 1.7 kilowatts of continuous power while producing 0.8 liters of drinking water per hour from seawater requiring no external hydrogen supply, no storage tanks, and no desalination plant.

Source: King Abdullah University of Science and Technology, Nature Energy, 2024

#seawaterfuel #cleanenergy #hydrogen #drinkingwater #renewableenergy #sciencebreakthrough #energyinnovation

Scientists just fabricated a high-temperature superconducting wire carrying electrical current density 100 times greater than copper conductors while losing absolutely zero energy to resistance

 

Scientists just fabricated a high-temperature superconducting wire carrying electrical current density 100 times greater than copper conductors while losing absolutely zero energy to resistance — operating at minus 196 degrees Celsius using liquid nitrogen cooling commercially available at lower cost than gasoline per liter.

A team from SuperPower Inc and Brookhaven National Laboratory produced a rare-earth barium copper oxide coated conductor tape 4 millimeters wide achieving critical current density of 10 to the power of 7 amperes per square centimeter at 77 Kelvin in a 1 Tesla magnetic field — 100 times copper's safe current density limit. The wire operates at liquid nitrogen temperature rather than near absolute zero — reducing cooling costs by 99% compared to conventional superconductors requiring liquid helium.

A single 4-millimeter superconducting tape replaces a copper cable bundle 400 millimeters in diameter for equivalent current capacity — reducing underground power transmission infrastructure to 1% of its current physical size. Transmission losses across a 1,000-kilometer superconducting grid line measure exactly zero — compared to 5 to 8% loss in conventional copper grids over the same distance.

Source: SuperPower Inc, Brookhaven National Laboratory, Applied Physics Letters, 2024

#superconductor #cleanenergy #powertransmission #energyscience #materialsscience #sciencebreakthrough #energyinnovation

the world's largest sodium-ion grid storage installation across six provinces, storing 8,000 megawatt-hours of surplus solar and wind electricity

 

China just made grid-scale battery storage significantly more affordable — activating the world's largest sodium-ion grid storage installation across six provinces, storing 8,000 megawatt-hours of surplus solar and wind electricity using battery chemistry that costs 40 percent less per kilowatt-hour than lithium-ion and carries zero risk of thermal runaway fire.

Sodium-ion batteries use abundant sodium salt as the charge-carrying ion instead of scarce lithium, eliminating supply chain dependency on lithium mining concentrated in just three countries worldwide. Chinese manufacturer CATL developed cells achieving 160 watt-hours per kilogram energy density — approaching lithium-ion performance — while operating safely from minus 40 to plus 80 degrees Celsius without cooling systems. Manufacturing uses standard lithium-ion production equipment with minor modifications, enabling rapid factory conversion at scale.

The six-province installation draws surplus renewable electricity during midday solar peaks and discharges during evening demand periods, reducing coal plant utilization equivalent to 3 million tonnes of CO2 annually. China has approved 50,000 megawatt-hours of additional sodium-ion storage contracts, signaling a full industrial transition away from lithium dependency for all grid applications.

Source: CATL Contemporary Amperex Technology China, State Grid Corporation of China, Chinese National Energy Administration, 2025

#sodiumion #chinaenergy #energystorage #cleanenergy #renewableenergy

Về việc triển khai quy định khai báo thông tin trước khi nhập cảnh tại Sân bay Quốc tế Tân Sơn Nhất (TSN)

 

[Thông báo chính thức] Về việc triển khai quy định khai báo thông tin trước khi nhập cảnh tại Sân bay Quốc tế Tân Sơn Nhất (TSN)

1. Đối tượng áp dụng

Quy định này bắt buộc áp dụng đối với:

Hành khách mang quốc tịch nước ngoài nhập cảnh vào Việt Nam

Người Việt Nam định cư ở nước ngoài (kiều bào) sử dụng thị thực (visa) để nhập cảnh

Không áp dụng đối với:

• Công dân Việt Nam sử dụng hộ chiếu Việt Nam

• Hành khách chỉ quá cảnh (transit), không làm thủ tục nhập cảnh

⸻

2. Nội dung quy định mới

Thời gian áp dụng: Từ ngày 15/04/2026

Theo Công văn số 1474/CACK TSN, hành khách thuộc diện áp dụng cần thực hiện:

Khai báo đầy đủ thông tin cá nhân trước khi đến cửa khẩu nhập cảnh

Sau khi hoàn tất khai báo, hệ thống sẽ cấp mã QR xác nhận

Xuất trình mã QR cho cán bộ kiểm soát tại Công an cửa khẩu – Sân bay Quốc tế Tân Sơn Nhất khi làm thủ tục nhập cảnh

⸻

3. Hình thức thực hiện khai báo

Hành khách có thể lựa chọn một trong hai phương thức linh hoạt và thuận tiện:

Cách 1 – Khai báo trực tuyến:

Truy cập cổng thông tin chính thức:

https://prearrival.immigration.gov.vn/

Cách 2 – Quét mã QR (TRONG HÌNH)

Sử dụng mã QR được cung cấp tại các kênh thông tin chính thức (áp dụng từ 15/04/2026)

Khuyến nghị:

Nên thực hiện khai báo trước khi khởi hành chuyến bay để tiết kiệm thời gian và tránh ùn tắc tại khu vực làm thủ tục nhập cảnh.

#vemaybayhalotrip #vemaybaymy

Engineers just demonstrated a hydrogen combustion engine that extracts its fuel directly from atmospheric water vapor

Engineers just demonstrated a hydrogen combustion engine that extracts its fuel directly from atmospheric water vapor - running continuously on humidity alone with zero carbon emissions and zero external fuel supply required.

A team from the Korea Institute of Energy Research developed an atmospheric water harvesting system using metal-organic framework sorbents that extract water vapor from air at humidities as low as 20% - capturing 4.7 liters of water per kilogram of sorbent material per day.

This water feeds a solid oxide electrolyzer splitting it into hydrogen and oxygen using 2.3 kilowatts of electrical input from integrated solar panels. The hydrogen powers a modified combustion engine producing 8.7 kilowatts of continuous mechanical output — a net energy gain of 6.4 kilowatts from atmospheric humidity alone.

#science #energy #hydrogen #physics #factcheck #innovation #fblifestyle