Academic Research Journal•2026•DOI: 10.26599/NR.2026.94908737
Electrocatalytic water splitting for hydrogen production is a key pathway for sustainable green hydrogen. However, freshwater scarcity limits large-scale application, necessitating efficient and stable catalysts for complex water sources such as seawater and wastewater. Here, we report a FeRu bimetallic nanocatalyst (FeRu-ERBC) constructed by anchoring FeRu composite nanoparticles on engineered biomass-derived carbon from Equisetum ramosissimum Desf. FeRu-ERBC exhibits excellent hydrogen evolution reaction (HER) performance in alkaline, seawater, and chemical wastewater environments, achieving an overpotential of only 22.7 mV at 10 mA·cm−2 in 1.0 M KOH and maintaining stability for over 120 h. Structural characterization and density functional theory (DFT) calculations reveal that the carbon support provides high specific surface area and hierarchical pores for mass transport, and critically promotes atomic-level substitution of Fe by Ru, forming a tightly coupled Fe–Ru interface. X-ray photoelectron spectroscopy and in situ spectroscopy confirm electron transfer from Fe to Ru, creating a 'Feδ+–Ruδ−' synergistic active center. This interface regulates the surface interfacial water network, enhancing overall reaction kinetics. This work provides a new strategy for designing Ru-based catalysts with interfacial electronic regulation for real-world water environments, highlighting the crucial role of biomass-derived carbon supports in advancing green hydrogen technology.
Nano-Micro Letters•2026•DOI: 10.1007/s40820-025-01980-1
The rapid accumulation of spent LiFePO4 (LFP) cathodes from retired lithium-ion batteries necessitates the development of effective and environmental-friendly recycling strategies. In this context, direct regeneration has emerged as a promising approach for reclaiming LFP cathode materials, offering a streamlined pathway to restore their electrochemical functionality. We report an integrated regeneration protocol that simultaneously repairs the degraded crystal structure and reconstructs the damaged carbon coating in spent LFP. The regenerated cathode material had superfast lithium-ion diffusion kinetics and a stable cathode–electrolyte interface, giving a remarkable rate capability with specific capacities of 122 mAh g−1 at 5C and 106 mAh g−1 at 10C (1C = 170 mA g−1). It also maintained capacities of 110.7 mAh g−1 (5C) and 84.1 mAh g−1 (10C) after 400 cycles. It could be used in harsh environments and could be stably cycled at subzero temperatures (−10 and −20 °C) and in solid-state electrolyte batteries. Life cycle assessment combined with economic evaluation using the EverBatt model reveals that this direct regeneration approach has high economic and environmental benefits.
Journal of Semiconductors (半导体学报 - 中国科学院半导体研究所)•2025•DOI: 10.1088/1674-4926/25080033
To improve the breakdown voltage (BV)-specific on-resistance (Ron,sp) trade-off and enhance manufacturability, this article proposes a novel lateral diffused metal-oxide-semiconductor (LDMOS) structure that features a split gate and split contact field plate (CFP). This novel structure requires no additional bias voltages, masks, or process steps, making it fully compatible with the bipolar-CMOS-DMOS (BCD) process flow. The physical mechanisms are elucidated through technology computer-aided design (TCAD) simulations. In the on-state, the positively biased split gate forms an accumulation layer at the drift region surface, thereby reducing Ron,sp. In the off-state, both the split gate and split CFP introduce additional electric-field peaks that smooth the lateral electric field, thus preserving a high BV. Compared with the conventional CFP-LDMOS, the proposed CFP-LDMOS achieves an 8.52% reduction in Ron,sp without compromising BV, leading to an 8.07% improvement in the figure of merit (FOM). Notably, the proposed structure can be extended to LDMOS devices across different voltage levels within BCD platforms, demonstrating its broad applicability.
Journal of Semiconductors (半导体学报 - 中国科学院半导体研究所)•2025•DOI: 10.1088/1674-4926/25080033
To improve the breakdown voltage (BV)−specific on-resistance (Ron,sp) trade-off and enhance manufacturability, this article proposes a novel lateral diffused metal−oxide−semiconductor (LDMOS) structure that features a split gate and split contact field plate (CFP). This novel structure requires no additional bias voltages, masks, or process steps, making it fully compatible with the bipolar-CMOS-DMOS (BCD) process flow. The physical mechanisms are elucidated through technology computer-aided design (TCAD) simulations. In the on-state, the positively biased split gate forms an accumulation layer at the drift region surface, thereby reducing Ron,sp. In the off-state, both the split gate and split CFP introduce additional electric-field peaks that smooth the lateral electric field, thus preserving a high BV. Compared with the conventional CFP-LDMOS, the proposed CFP-LDMOS achieves an 8.52% reduction in Ron,sp without compromising BV, leading to an 8.07% improvement in the figure of merit (FOM). Notably, the proposed structure can be extended to LDMOS devices across different voltage levels within BCD platforms, demonstrating its broad applicability.
Journal of Central South University•2025•DOI: 10.1007/s11771-025-6093-1
Developing a low-cost stable and high-performance peroxymonosulfate (PMS) catalyst to degrade refractory organic pollutants is still an urgent problem. Herein, this study reported FeVO4 nanorods decorated sepiolite (FeVO4/sepiolite) through simple hydrothermal method as an adsorptive-catalyst for PMS activation to degrade tetracycline (TC). Benefiting from the introduction of sepiolite support, FeVO4 nanorods could be uniformly immobilized onto fibrous sepiolite surface. As a result, FeVO4/sepiolite composite was endowed with excellent adsorption properties, rich surface hydroxyl groups, more reaction active sites, and the stable redox cycle of Fe3+/Fe2+ and V5+/V4+. Therefore, higher TC degradation efficiency (91.19% within 40 min) and larger reaction rate constant (0.1649 min−1) were obtained in FeVO4/sepiolite/PMS system than in FeVO4/PMS system. Besides, the composite presented good stability and reusability, and the effects of application parameters on TC degradation were investigated in detail. Through quenching experiment and electron paramagnetic resonance (EPR) test, it was found that both radical and non-radical species participates in TC degradation, and 1O2 were the main active species. The PMS activation mechanism was proposed, and the possible degradation pathway was also analyzed according to the high performance liquid chromatography-mass spectrometry (HPLC-MS) results. Overall, this work provides meaningful insights for designing natural mineral based PMS activators to effectively remediate antibiotic wastewater.