本研究旨在开发基于海水的高性能氧还原反应（ORR）电催化剂，这对于可再生能源的存储和转换具有重要意义。目前，基于铁的衍生物被氮掺杂的碳包覆，是典型的代表。然而，揭示氮构型对ORR活性和耐氯性的机制仍然是一个巨大挑战。

在质子交换膜燃料电池(PEMFC)中，Pt是氧还原反应(ORR)活性最高的材料。然而，贵金属Pt储量稀少和价格昂贵，减少材料中Pt含量是减少其使用的最直接的策略，但这通常伴随着活性位点数量的减少或发生团聚。Pt与其他后过渡金属合金化提高了Pt的活性， ...

过氧化尿素(CO(NH2)2•H2O2)作为尿素的衍生物，已广泛应用于制药、农业、纺纱、日常化工等。CO(NH2)2•H2O2的工业生产主要依赖于尿素和H2O2这两种反应物。其中，通过碳源(CO2)和氮源(N2、NO、NO2−、NO3−)耦合高效电催化剂，可以在电化学条件下通过电催化C-N偶联反应有效地生成尿素。同时，利用高效电催化剂和活性OOH中间体的适当 ...

12:30, Fri, Dec 12, 2025 Updated: 12:35, Fri, Dec 12, 2025 Money expert Martin Lewis has urged O2 customers to report it after they were hit with unexpectedly large final bills for trying to ditch the ...

I live in New Jersey, one of the states that mandates inspection for all vehicles newer than 1995. My daily driver, a Jeep Cherokee, happens to be a 1996 model year with an OBD-II sensor, meaning I ...

Read on to find other ways you can save on your phone bill THE deadline for millions of O2 customers to avoid an annual £30 bill hike is fast approaching. The mobile phone provider warned that new and ...

O2 customers have been alerted that time is running out if they wish to avoid a £2.50 monthly increase. People are being urged to watch out for a notification from the mobile phone provider which been ...

Martin Lewis has issued a stern warning to O2 customers who have been slapped with hefty bills for attempting to exit the network following its mid-contract price hike. The founder of Money Saving ...

Money expert Martin Lewis has urged O2 customers to switch to a different network within 30 days, following a letter he sent to Chancellor Rachel Reeves. Mr Lewis responded after O2 announced it was ...

Virgin Media O2 will bring mobile service directly through Starlink satellites. This partnership aims to connect remote areas in the UK. The service is scheduled to launch in the first half of 2026.

Millions of subscribers to the O2 network – now merged with Virgin Media as VMO2 – could face bills rising up to 40 percent more than expected from April 2026, a move Ofcom called disappointing. "This ...