High-temperature shock enabled synthesis of ultrafine Ru nanoparticles anchoring onto tungsten carbide with strong metal-support interaction for ampere-level current density hydrogen evolution

Single-Atom Ru Biomimetic Nanozyme for the Electrochemical Sensing of Hydrogen Peroxide

“…These three samples’ high-resolution C 1s spectra (Figure b) exhibit four prominent peaks accordingly signifying CC, C–OH, C–O–C, and HO–CO bonds. Meanwhile, Figure b also shows that the Ru 3d and C 1s signals overlapped, and the fitted Ru 3d signal is divided into the Ru 3d 3/2 and Ru 3d 5/2 peaks for Ru SA/GFs (285.20 and 281.70 eV) and Ru NPs/GFs (285.10 and 281.60 eV), respectively. , In the O 1s spectra (Figure c), aside from the existence of O–H and C–O bonds in three of them, , the emergence of the peak around 530.20 eV corresponding to Ru–O appeared in both Ru SA/GFs and Ru NP/GFs, while the peak located about 533.33 eV attributed to HO–CO observed in GFs diminishes. This alteration suggests that the Ru species anchored on the GFs through chemical bonding. , Furthermore, the signal of Na in GFs is relatively strong, whereas the Na signal decreases after the deposition of Ru (Figure S3), suggesting that the Na element probably indeed exerts a pronounced influence on the formation of the Ru single atom …”

A hierarchical carbon foam-hosted Co2P nanoparticles monolithic electrode for ampere-level and super-durable electrocatalytic hydrogen production

“…Renewable electricity-powered electrocatalytic water splitting to produce energy-dense and green hydrogen (H 2 ) is regarded as an attractive strategy for sustainable energy source to alleviate the huge reliance on fossil fuels. 1–4 Unfortunately, HER reaction features sluggish reaction kinetics in alkaline and acidic conditions, thus developing highly active and robust electrocatalysts that can efficiently and stably work under ampere-level current densities is highly necessary but remains a great challenge. 5–7 To date, Pt-based catalysts are considered as the benchmark electrocatalysts for HER, but the high cost, scarcity, and inferior durability severely impede their massive application in practical water electrolyzers.…”