SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-026-4262-7
The escalating demands of artificial intelligence, machine learning, and neural computing necessitate multifunctional optoelectronic devices capable of integrating sensing, memory, and processing. Two-dimensional van der Waals heterostructures (vdWHs) offer unique advantages, yet their practical deployment is hindered by complex architectures and inefficient mode-switching. Here, we demonstrate a MoTe2/SnS2 anti-ambipolar heterojunction device enabling single-gate reconfiguration among frequency doubling, broadband photodetection, and neuromorphic computing. The device exhibits a peak-to-valley ratio (PVR) of 465, ensuring efficient frequency doubling. As a photodetector, it operates across an exceptionally broad spectral range of 520–2200 nm, with outstanding responsivity and detectivity. Furthermore, the device emulates complete synaptic behaviors, including short-term plasticity (STP), long-term plasticity (LTP), and paired-pulse facilitation (PPF). Integrated into a reservoir computing (RC) system trained on a vehicle motion dataset, it achieves a directional recognition accuracy of 98.7%. This work establishes a paradigm for multifunctional integration and low-power neuromorphic computing, advancing next-generation intelligent optoelectronic systems.
SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-025-3602-1
Solid-state lithium batteries (SSLBs) are promising next-generation energy storage systems due to their high safety and energy density. However, poor low-temperature performance of solid-state electrolytes remains a critical challenge. Here, we present a facile and scalable approach for synthesizing a low-temperature-resilient polymer electrolyte based on ethylene-vinyl acetate (EVA), leveraging its unique molecular structure for enhanced lithium-ion transport. The EVA polymer electrolyte (EPE) demonstrates a high ionic conductivity of 5.13×10−4 S cm−1 at room temperature and retains a remarkable conductivity of 2.72×10−5 S cm−1 at −40 °C. This superior performance is attributed to the synergistic interaction between the ester functional groups of EVA and lithium salts, which reduces the ion dissociation energy barrier and facilitates efficient ion migration. The EPE enables stable lithium plating/stripping cycling for over 3000 h at −40 °C and supports long-term cycling of LiFePO4-based full cells at −40 °C for over 900 cycles. This work highlights the potential of cost-effective, scalable EPEs for next-generation SSLBs, particularly in extreme environmental conditions.
Journal of Environmental Engineering Technology•2026•DOI: 10.13205/j.hjgc.202605007
Reservoirs are significant sources of nitrous oxide (N2O), a potent greenhouse gas. The nosZ-type denitrifying bacteria, which reduce N2O to inert N2, play a critical role in mitigating emissions. This study investigated the community structure, diversity, and abundance of nosZ-type denitrifiers in surface sediments (0-15 cm) from 18 reservoirs in the northeastern Qinghai-Tibet Plateau, including 10 in the Yellow River mainstem and 8 in the Huangshui River basin. Sampling occurred during dry (May 2023) and wet (August 2023) seasons. High-throughput sequencing of the nosZ gene and quantitative PCR were employed. Results showed that Proteobacteria dominated (78.91%). Paracoccus and Halomonas were biomarkers in the Yellow River mainstem. Diversity was significantly higher in the Huangshui basin (P<0.05), with no temporal difference. Gene abundance was higher in the Huangshui basin (165.24×10^5 copies/g) than in the Yellow River mainstem (34.43×10^5 copies/g), and higher in wet season (128.55×10^5 copies/g) than dry season (61.27×10^5 copies/g) (P<0.05). Redundancy analysis and hierarchical partitioning identified sediment temperature, pH, total phosphorus, and water total nitrogen as key drivers, explaining 17.14%, 16.89%, 13.83%, and 11.23% of community variation, respectively. These findings reveal significant spatiotemporal heterogeneity and provide a scientific basis for N2O mitigation in plateau reservoirs.
Chinese Journal of Environmental Engineering•2026•DOI: 10.12030/j.cjee.202508081
Traditional soil thermal remediation requires high temperatures (>300 °C), which can damage soil structure, increase energy consumption, and elevate carbon emissions. This study developed a Cu–CeOx/TiO2 trimetallic catalyst to enable low-temperature thermal remediation of naphthalene-contaminated soil. Using nano-TiO2 as a support, catalysts with varying Cu/Ce ratios were prepared via impregnation-calcination. Material characterization (XRD, TEM, XPS, etc.) revealed that Cu and Ce incorporation induced crystal defects in TiO2, enhancing lattice oxygen activity and electron mobility, thereby generating more oxygen vacancies and hydroxyl radicals. Performance evaluation using a TGA-GC-FTIR-MS platform showed that the catalyst with Cu:Ce = 1:1 achieved the best remediation efficiency, reducing the thermal remediation temperature from 250 °C to 211.5 °C and increasing the removal rate by an average of 19.49% compared to the non-catalyst group at the same temperature. The catalyst facilitated stepwise degradation of naphthalene into smaller organic molecules (alcohols, carboxylic acids, aldehydes) and ultimately into H2O and CO2. This work demonstrates that Cu–CeOx/TiO2 significantly lowers the energy demand of thermal remediation, offering a promising approach for low-carbon remediation of organic-contaminated soils.
SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-025-4032-x
This study introduces a dual-compatibility third component as an interfacial modifier to precisely regulate the active layer morphology of bulk heterojunction organic solar cells (BHJ-OSCs). This approach successfully suppresses excessive phase separation, significantly enhancing the performance of thick-film devices. The interface-styling strategy enhances donor–acceptor interactions, optimizes vertical phase separation morphology, extends exciton diffusion length, improves exciton dissociation efficiency, facilitates efficient charge transport, and effectively suppresses trap-assisted recombination. The ternary device based on PM6:PCN3:PY-IT achieved a power conversion efficiency (PCE) of 19.41%, which was much higher than that of the PM6:PY-IT binary system (18.67%). The device maintains excellent performance at an active layer thickness of 200 nm, achieving a high PCE of 18.25%. This study demonstrates the significance of using dually compatible molecules for interface modification in all-polymer solar cells (all-PSCs), providing theoretical guidance for the fabrication of high-performance thick-film devices.