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 ...

金属-氮-碳（M-N-C）单原子催化剂被认为是高效的铂基催化剂替代品。过去，单原子催化剂在不同pH环境下的活性和选择性机制存在争议。本研究通过分析超过100种M-N-C结构，成功开发了单原子催化剂的pH-电场耦合新模型。该模型揭示了氧还原反应（ORR ...

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 ...

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 ...

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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 ...

Virgin Media O2 has announced a multi-year partnership with Starlink Direct to Cell, introducing a UK-first initiative aimed at improving rural mobile coverage and customer experience through ...

Virgin Media O2 is in talks to buy broadband network operator Netomnia. As reported by the Financial Times, Virgin Media O2 is in discussions to acquire the fourth-largest broadband network operator ...