摘要：电子皮肤、人机交互和健康监测等领域推动了柔性压力传感器的快速发展.然而,同时满足耐用和瞬态的需求对柔性压力传感器是一个巨大的挑战.本文开发了一种用于柔性瞬态压阻传感器的安全、耐受的聚吡咯/蛭石/海藻酸盐半导体框架.将带负电荷的蛭石纳米片插层到可生物降解的海藻酸盐织物中,进一步用高灵敏度的导电聚吡咯修饰.由此产生的多维框架实现了柔性传感器的稳定性,并且在使用寿命结束后可以在不留下电子垃圾的情况下逐渐降解.所获得的瞬态压阻传感器显示出了快速的响应时间(81/99 ms)和出色的抗疲劳性能.此外,我们开发了一种有效的机器学习模型用于人体动作识别和预测,准确率为100%.本工作为柔性瞬态电子学中有机-无机界面的设计提供了一种有前景的策略,并在基于舒适生物纤维的柔性平台中展现了广阔的应用前景.

摘要：Due to their capability of reversibly accepting multi lithium ions,polyoxometalates(POMs)have been widely regarded as promising candidates for electrochemical lithium ***,the insulating nature of POMs hinders fast migration kinetics of lithium within the bulk of these ***,we propose the introduction of a local electric field surrounding the POM nanoparticles consisting of Mn and V where the concomitant Coulomb forces can accelerate the migration of lithium *** rationally hybridizing POMs with MXene nanosheets,the imbalanced charge distribution emerging at their interface produces the local electric field,thereby leading to a 250-fold increase of lithium diffusion *** this regard,a capacitive contribution as high as 81.7%at 1.0 mV sis ***,the POM nanoparticles could densely assemble on the surface of MXene nanosheets,offering highly packed electrodes and thus high volumetric *** to the improved lithiumion transfer kinetics,the POMs/MXenes composites are paired with activated carbon to produce lithium-ion capacitors which could offer a high energy density of 195.5 W h kgand a large power capability of 3800 W *** findings in this work could build a clear relationship between materials with different conductivities for designing electrode materials.

摘要：在电催化CO_(2)还原(CO_(2)RR)过程中,催化剂的重构经常发生.虽然合理的界面结构与催化位点调控有利于构建优异的电催化剂,但是仍面临诸多挑战.本文通过电化学还原和原位锚定策略合成了单原子铋与铟基底协同的原子桥接结构,从而提高CO_(2)RR的电催化性能.原位结构分析和理论研究表明,多孔碳载体上负载的Bi-In协同位点能够打破原有的结构对称,通过σ键和π*负反馈键形成的电荷密度梯度有利于甲酸盐中间体的吸附,从而实现了高达95.1%的甲酸选择性和持续电解9 d的稳定催化.在太阳能电池驱动下,将5-羟甲基糠醛氧化与CO_(2)RR相耦合,实现了阴极生产甲酸和阳极产生2,5-呋喃二羧酸(88.2%)的高效太阳能-燃料转换选择性.该工作对原子桥连结构活性位点的电催化本质与协同作用机制的理解,为合理设计高性能CO_(2)RR电催化剂提供了重要思路.

摘要：Multifunctional catalysts that integrate high efficiency hydrogen evolution reaction(HER), oxygen evolution reaction(OER) and oxygen reduction reaction(ORR) catalytic activity in a single material are attractive for unitized regenerative fuel cells and overall water splitting technologies. As the best-known HER and ORR electrocatalysts, Pt and its alloys have only moderate OER activity. Ruthenium and iridium oxides exhibit the highest OER activities but not as active as Pt for HER and ORR. Here, we proposed a general principle for achieving trifunctional electrocatalysis for three reactions in a single material. Using the newly-synthesized pyrazine-modified graphdiyne(PR-GDY) as an example, we demonstrated that the synergistic effect of the pyridinic nitrogen and anchored transition-metal(TM) single atoms renders highly-efficient HER/OER/ORR trifunctional electrocatalytic activity. For the Ni-doped PR-GDY, the overpotentials for HER, OER and ORR can be respectively as low as -0.05, 0.29 and 0.38 V, which are comparable or even superior to the best-known single-functional and bi-functional precious *** computational results offer not only a promising trifunctional electrocatalyst but also a strategy for the design of multifunctional electrocatalysts.

摘要：The development of efficient electrocatalysts for hydrogen evolution reaction(HER) and oxygen evolution reaction(OER) with excellent catalytic performance and stability plays key roles in the commercialization of water splitting to generate hydrogen energy. Herein, a 2 D-3 D nanostructure composed of metal hydroxides and Prussian blue analogus(PBA) was in-situ decorated onto the Ni Fe foam(Pt-Ni Fe PBA) through a facile and scalable corrosive-coordinate approach. The specifically designed morphology favored the provision of abundant active sites, optimized the reaction pathway, and accelerated mass transport during the electrocatalytic process. Consequently, the as-synthesized Pt-Ni Fe PBA reached 10 m A cm^(-2) with small overpotentials of 29 and210 m V in 1 mol L;KOH deionized water for HER and OER,respectively. Remarkably, Pt-Ni Fe PBA required an overpotential of 21 m V to drive 10 m A cm^(-2) in seawater containing1 mol L;KOH with prominent durability. Moreover, with the as-synthesized Pt-Ni Fe PBA as bifunctional electrocatalyst,the Pt-Ni Fe PBA||Pt-Ni Fe PBA electrolyzer needed 1.46 and1.48 V to drive 10 m A cm^(-2) in 1 mol L;KOH with deionized water and 1 mol L;KOH with seawater, respectively. Remarkably, sustainable energies were utilized to power the overall water splitting and stored as easily portable hydrogen energy.

摘要：The control design problem plays a fundamental role in the study of logical control networks(LCNs).This paper presents a detailed survey on new developments in control design techniques of ***,some preliminary results on the semi-tensor product method and LCNs are ***,we move on to some new developments for control design techniques of LCNs,including the reachable set approach,the pinning control technique,the control Lyapunov function approach,the event-triggered control technique,and the sampled-data control ***,an illustrative example is given to demonstrate the effectiveness of these techniques.

摘要：Global illumination is the core part of photo-realistic rendering. The photon mapping algorithm is an effective method for computing global illumination with its obvious advantage of caustic and color bleeding rendering. It is an active research field that has been developed over the past two decades. The deficiency of precise details and efficient rendering are still the main challenges of photon mapping. This report reviews recent work and classifies it into a set of categories including radiance estimation, photon relaxation, photon tracing, progressive photon mapping, and parallel methods. The goals of our report are giving readers an overall introduction to photon mapping and motivating further research to address the limitations of existing methods.

摘要：Artificial Z-scheme photocatalytic systems have received considerable attention in recent years because they can achieve wide light-absorption, high charge-separation efficiency, and strong redox ability simultaneously. Nevertheless, it is still challenging to exploit low-cost and stable Zscheme photocatalysts with highly-efficient H2 evolution from solar water-splitting so far. Herein, we report a novel all-solidstate Z-scheme photocatalyst Cd1-xZnxS@WO3-x consisting of Cd1-xZnxS nanorods coated with oxygen-deficient WO3-x amorphous layers. The Cd1-xZnxS@WO3-x exhibits an outstanding H2 evolution reaction(HER) activity as compared with Pt-loaded Cd1-xZnxS and most WO3- and Cd S-based photocatalysts, due to the generation of stronger reducing electrons through the appropriate Zn-doping in Cd1-xZnxS and the enhanced charge transfer by introducing oxygen vacancies(W^5+/OVs) into the ultrathin WO3-x amorphous coatings. The optimal HER rate of Cd1-xZnxS@WO3- xis determined to be 21.68 mmol h^-1 g^-1, which is further raised up to 28.25 mmol h^-1 g^-1(about 12 times more than that of Pt/Cd1-xZnxS) when Cd1-xZnxS@WO3-x is hybridized by Co Ox and Ni Oxdual cocatalysts(Cd1-xZnxS@WO3-x/CoOx/NiOx)through in-situ photo-deposition. Moreover, the corresponding apparent quantum yield(AQY) at 420 nm is significantly increased from 34.6% for Cd1-xZnxS@WO3-x to 60.8% for Cd1-xZnxS@WO3-x/CoOx/NiOx. In addition, both Cd1-xZnxS@WO3-x and Cd1-xZnxS@WO3-x/CoOx/NiOx demonstrate good stability towards HER. The results displayed in this work will inspire the rational design and synthesis of high-performance nanostructures for photocatalytic applications.

摘要：Graphene-like N,S-codoped bio-carbon nanosheets(GNSCS) were prepared by a facile and environment-friendly NaCl non-aqueous ionic liquid route to house sulfur for lithium-sulfur battery. The natural nori powder was calcined at 900°C for 3 h under Ar, in which NaCl non-aqueous ionic liquid can exfoliate carbon aggregates into nanosheets. The structural characterization of GNSCS by a series of techniques demonstrates the graphene-like *** evaluated as the matrix for sulfur cathode, GNSCS/S exhibits more prominent cycling stability and rate capability.A discharge capacity of 548 mA h g-1 at a current density of 1.6 A g-1 after 400 cycles was delivered with a capacity fade rate of only 0.13% per cycle and an initial Coulombic efficiency(CE) as high as 99.7%. When increasing the areal sulfur loading up to 3 mg cm-2, the discharge capacity can still be retained at 647 mA h g-1 after more than 100 cycles with a low capacity degradation of only ~0.30% per cycle. The features of N/S dual-doping and the graphene-like structure are propitious to the electron transportation, lithium-ion diffusion and more active sites for chemically adsorbing polysulfides. It is anticipated that other functional biochar carbon can also be attained via the low-cost, sustainable and green method.

摘要：Bio-nanochannels in living organisms participate in the physiological activities by selectively transporting ions through cell *** structure and function of biological ion channels inspire the development of artificial ion nanochannels with practical *** bioinspired nanochannels based on polymer materials present good mechanical stability,high-performance ion transport and designability,which have attracted much *** this review,we mainly focus on the fabrication and application of polymer-based biomimetic nanochannels especially in environmentally responsive biosensor and energy *** firstly introduce the basic understanding of nanochannels in ion regulation and osmotic energy ***,we discuss the fabrication methods of polymer-based nanochannels and highlight their advantages compared with other *** practical applications of polymer-based biomimetic nanochannels,especially in energy conversion and environmentally responsive biosensor,are detailedly ***,we summarize the unsolved problems in bioinspired nanochannels and overview the further developing direction in this field.