Advanced Science
·
2024
·Vol. 11
·期 28
·2401436
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IF 14.3
Yihan Wang,Lang Chu,Si Meng,Mingxuan Yang,Yidan Yu,Xiaokang Deng,Cheng Qi,Tiantian Kong,Zhou Liu
Yarn-woven triboelectric nanogenerators (TENGs) have greatly advanced wearable sensor technology, but their limited sensitivity and stability hinder broad adoption. To address these limitations, Poly(VDF-TrFE) and P(olyadiohexylenediamine (PA66)-based nanofibers coaxial yarns (NCYs) combining coaxial conjugated electrospinning and online conductive adhesive coating are developed. The integration of these NCYs led to enhanced TENGs (NCY-TENGs), notable for their flexibility, stretchability, and improved sensitivity, which is ideal for capturing body motion signals. One significant application of this technology is the fabrication of smart insoles from NCY-TENG plain-woven fabrics. These insoles are highly sensitive and possess antibacterial, breathable, and washable properties, making them ideal for real-time gait monitoring in patients with diabetic foot conditions. The NCY-TENGs and their derivatives show immense potential for a variety of wearable electronic devices, representing a considerable advancement in the field of wearable sensors.
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ACS Applied Nano Materials
·
2024
·
IF 5.3
Jiahui Wang,Shuai Zhang,Shufang Ma,Xiaodong Hao,Xiang Li,Bingshe Xu
Single-element phosphorus is an emerging class of two-dimensional (2D) semiconductor materials that has attracted extensive attention, particularly as a photocatalyst material. However, the inherent instability of elemental phosphorus causes insufficient surface activity for photocatalytic performance. In this study, the self-adsorption and clustering of metal ions on the surface of 2D materials were exploited to form Ag nanoparticle (NP)-modified black phosphorus (BP-Ag) heterostructures, which passivated the lone-pair electrons of phosphorus, promoted charge separation, and enhanced the photocatalytic activity. Consequently, the photocatalytic decomposition of methyl orange with BP-Ag was 99.05%, which was 1.87 times higher than that of pure black phosphorus. Within 3 h, the photocatalytic hydrogen evolution efficiency of BP modified by Ag NPs was about 20 times that of BP. In addition, the decomposition of dye molecules was investigated using active substances, such as hydroxyl radicals, superoxide radicals, and holes. In conclusion, the modification of metal NPs can greatly improve the stability and photocatalytic performance of single-element phosphorus materials, which has good application prospects for purifying dye wastewater and hydrogen evolution.
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Journal of Energy Storage
·
2025
·
IF 9.8
Yajie Yuan,Weiya Zhang,Li Wang,Zongwen Zhao,Yaochun Yao,Yin Li,Zhunqin Dong,Lingling Yuan
As the energy density of lithium-ion batteries continues to increase, the performance requirements for separators have become more stringent. Traditional polyolefin separators offer advantages such as low cost and excellent chemical stability. But they suffer from poor electrolyte wettability, thermal stability, and high interfacial resistance, which hinder the development of high-performance lithium-ion batteries. To address these issues, this study introduces a blending coating method using titanium nitride and boron nitride particles to enhance the overall performance of polypropylene separators. The TiN/BN@PP-15 separator demonstrates superior wettability, thermal stability, and electrochemical performance. Under a high discharge rate of 5C, it achieves an initial discharge capacity of 130.7 mAh g −1 . Additionally, batteries assembled with the TiN/BN@PP-15 separator exhibit the lowest interfacial resistance of 79.7 Ω, a high ionic conductivity of 0.466 mS cm −1 , and a lithium-ion diffusion coefficient of 11.7 × 10 −14 cm 2 s −1 . These results indicate that the co-blending coating of TiN and BN particles not only improves the physicochemical properties of PP separators but also ensures high discharge capacity and cycling stability under high-rate conditions, providing reliable technical support for high energy density and high rate energy storage systems.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Xuechao Liu,Mao Chen,Chunyan Shi,Guoqi Liu,Hongxia Li,Hailong Wang,Bingbing Fan,Yongqiang Chen
In this work, polycrystalline cubic boron nitride (PcBN) carbide insert was prepared by a six-anvil high-pressure apparatus at 1500 °C and 5.5 GPa, integrated sintering with different alloy substrates of the Co content. This work studied the effects of different Co content in alloy substrates on phase composition, microstructure, and mechanical properties of the PcBN carbide insert. The result shows that the binder reacted with cBN particles to produce AlN, AlCo, TiB 2 , W 2 B, and Co 2 B. At the same time, transgranular fracture is wide spread in the sintered body. The flexural strength and hardness of the PcBN carbide insert first increase and then fall. When the alloy substrate is WC-11.5 wt% Co, the PcBN carbide insert shows excellent comprehensive performance, with the flexural strength and hardness reaching 1675.67 MPa and 4100.51 Hv, respectively. Through integrated sintering, Co in the alloy substrate diffused and reacted with the binder in the cBN network at the bonding interface, forming a transition area that significantly improves the bonding strength.
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CHINESE CHEMICAL LETTERS
·
2025
·
IF 8.9
Shanshan Wang,Junhao Chen,Kui Qu,Xingyun Li,Hao Wang,Qingchi Xu,Jian Weng,Jun Xu
Unravelling the mechanism of electronic state evolution is ultimately important when attempting to functionalize two dimensional (2D) materials through electronic state regulation. However, there is still a lack of understanding in how the individual local functionalized regions could influence the entire 2D-layered property. Herein, we report the observation of surface electronic behavior during these functionalization process when utilizing the electron-deficient aluminium ion (Al 3+ ) to passivate 2D black phosphorus (BP). Interestingly, the local electron density change in response to a certain functionalization can induce the periodic electron density gradient via inductive integration effect and spread over the entire 2D surface layer. Such 2D coupling effect is evidently supported by the combined investigation of in-situ / ex-situ experimental analysis and theoretical calculation, upon the model Al 3+ -BP modulating process. This work discloses the electron-level relationship between the individual and the whole during the functionalization process and therefore provides a direction for precise manipulation of electronic behavior in functionalized 2D materials.
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Nature Chemistry
·
2025
·
IF 20.2
Zheng Nanlong,Cao Songqi,Zhang Tianhao,Huo Peihao,Hu Conglan,Liu Huanyu,Guo Ruoyao,Yan Wenchao,Zheng Jiayin,Jiang Xiaofan,Zhu Zhenyu,Sun Junliang,Jiang Hong,Bian Zuqiang,Fu Yongping,Liu Zhiwei
Zero-dimensional (0D) metal halides, which feature discrete metal halide octahedra interspersed with large organoammonium cations, are the building blocks of halide perovskites. The optical properties of these materials make them promising candidates in light-emitting devices. However, developing their general design principles remains challenging. Here we report an antisolvent incorporation approach that transforms a broad range of two-dimensional tin iodide perovskites into 0D structures. This approach accommodates diverse organic cations and antisolvent molecules and is extendable to germanium and lead analogues. We show that enhancing the structural rigidity in Sn-based octahedra—modulated by organic packing—increases the radiative recombination rate while decreasing the non-radiative recombination rate, achieving near-unity photoluminescence quantum yield. Ge- and Sn-based structures exhibit large Stokes shifts and microsecond-scale triplet lifetimes due to localized excited states, while their Pb-based counterpart shows faster recombination via triplet–singlet mixing, supported by theoretical calculations. This work offers a versatile synthetic platform for 0D metal halides and deepens our current understanding of excited-state dynamics in halide perovskites.
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ADVANCED MATERIALS
·
2025
·
IF 26.8
Decheng Li,Guyue Li,Yifan Yu,Chilin Li
Fluoride ion batteries (FIBs) have garnered significant attention due to their ultrahigh theoretical energy density, dendrite-free safety, and resource abundance. Although some anion acceptors have been proposed to address the insolubility of inorganic fluoride salts, the difficulty in dissociating fluoride ions from acceptors results in short lifespan and extremely low specific capacity of FIBs. Here, a fluoride ion battery is demonstrated with unprecedented long life and ultrahigh specific capacity through the design of an acceptor-multi-F state electrolyte. The high Lewis acidity of triphenylantimony chloride (TSbCl) as a novel anion acceptor in electrolyte facilitates the complete dissociation of CsF, and the resulting TSbCl-F complex can further interact with fluoride ions to form the acceptor-multi-F states. This strategy combines the high dissociation capability for fluoride salts with the minimal thermodynamic barriers for releasing fluoride ions at electrode-electrolyte interface. This electrolyte design endows FIBs with durable reversible fluorination/defluorination reaction (3700 cycles with high coulombic efficiency of 99.5% and small voltage polarization of 30 mV) and ultrahigh reversible capacity (580 mAh g −1 after 40 cycles at 100 mA g −1 ). The high-output voltage FIBs of CuF 2 //Li configuration (with discharge plateau of 2.9 V) and larger-sized pouch-type FIBs of CuF 2 //Sn+SnF 2 configuration (with reversible capacity of 530 mAh g −1 ) are demonstrated.
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