摘要：Heterojunction catalysts composed of transition metal sulfides exhibited excellent potentials in electrocatalytic water ***,we have designed a FeS/Co_(3)S_(4) heterojunction catalyst for hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)in alkaline water/seawater ***-dimensional nanoarrays were grown on nickel foam,and the successful synthesis of heterojunction endowed excellent activity to the *** alkaline water/seawater solution,the low overpotentials(at current density of 10 mA/cm^(2))of HER were 120.3 and 135.6 mV and the low overpotentials of OER were 212 and 232 mV,*** work provided an effective method for highly-efficiently electrocatalytic splitting of water via fabrication of heterojunction.

摘要：Rechargeable Li batteries as electrochemical energy storage and conversion devices are continuously changing human life. In order to meet the increasing demand for energy and power density, it is essential and urgent to exploit the electrode materials with high capacity and fast charge transfer(for Li-ion and Li-S batteries) and electrocatalysts with high activity(for rechargeable Li-O2 batteries). The high capacity is attributed to high electron transfer number and low molecular weight of the electrode materials. Combined with proper nanostructure design, the electronic transfer and ionic conductivity will be improved. This review summarizes recent efforts to apply electrode materials for Li-ion batteries with multi-electron reaction, Li-S batteries, and efficient electrocatalysts for Li-O2 batteries. The methods to enhance the cycling and rate performance have been discussed in detail. Advanced rechargeable Li batteries with multi-electron reaction will become the research emphasis in the future.

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：Photocatalytic oxidative organic reactions are important synthetic transformations,and research on reaction selectivity by reactive oxygen species(ROS)is *** date,however,there has rarely been any focus on the directed generation of ***,we report the first identification of tunable molecular oxygen activation induced by polymeric conjugation in nonmetallic conjugated microporous polymers(CMP).The conjugation between these can be achieved by the introduction of alkynyl ***-A with an alkynyl bridge facilitates the intramolecular charge mobility while CMP-D,lacking an alkynyl group enhances the photoexcited carrier build-up on the surface from *** different processes dominate the directed ROS generation of the superoxide radical(·O_(2)^(-))and singlet oxygen(^(1)O_(2)),*** theory is substantiated by the different performances of these CMPs in the aerobic oxidation of sulfides and the dehydrogenative coupling of amines,and could provide insight into the rational design of CMPs for various heterogeneous organic photosynthesis.

摘要：Better understanding of electrochemical reaction behaviors of hydrazine electrooxidation at metal phosphides has long been desired and the optimization of reaction kinetics has been proved to be ***,the dehydrogenation kinetics of hydrazine electrooxidation at Ni_(2)P is adjusted by Co as the(Ni_(0.6)Co_(0.4))_(2)P catalyzes HzOR effectively with onset potential of–45 mV and only 113 mV is needed to drive the current density of 50 mA cm^(‒2),showing over 60 mV lower than Ni_(2)P and Co_(2)*** also delivers the maximum power density of 263.0 mW cm^(-2) for direct hydrazine fuel *** experimental results revealed that Co doping not only decreases the adsorption energy of N_(2)H_(4) on Ni sites,lowering the energy barrier for dehydrogenation,but also acts as the active sites in the optimal reaction coordination to boost the reaction *** work represents a breakthrough in improving the catalytic performance of non‐precious metal electrocatalysts for hydrazine electrooxidation and highlights an energy‐saving electrochemical hydrogen production method.

摘要：The photocatalytic activity of a semiconductor‐based photocatalyst largely depends on the semiconductor’s intrinsic crystal and electronic *** have prepared two types of La and Cr co‐doped SrTiO3photocatalysts(SrTiO3(La,Cr))using the polymerized complex method(PCM)and sol‐gel hydrothermal method(SHM).Under?>420‐nm visible light irradiation,only the Pt‐loaded SrTiO3(La,Cr)prepared by the SHM showed efficient photocatalytic activities for both H2evolution in the presence of an I?sacrificial reagent and for Z‐scheme overall water splitting when it was coupled with the Pt‐loaded WO3in the presence of I?and IO3?as the shuttle redox *** superior photocatalytic activity of SrTiO3(La,Cr)prepared by the SHM has been ascribed to its more negative conduction‐band position,higher carrier concentration,and higher carrier mobility,demonstrating that the design and synthesis of an H2‐evolution photocatalyst with appropriate electronic properties is crucial for achieving Z‐scheme overall water splitting.

摘要：Although CO_(2)photoreduction is a promising method for solar‐to‐fuel conversion,it suffers from low charge transfer efficiency of the *** improve the CO_(2)photoreduction performance,introduction of electron‐accumulated materials on the photocatalyst surface is considered an effective *** this study,the Bi_(19)S_(27)Br_(3)/BiOBr composites were designed and *** Bi19S27Br3 nanorod in this photocatalytic system acts as an electron‐accumulated active site for extracting the photogenerated electrons on the BiOBr surface and for effectively activating the CO2 *** a result,Bi_(19)S_(27)Br_(3)/BiOBr composites exhibit the higher charge carrier transfer efficiency and further improves the CO_(2)photoreduction performance relative to that of pure Bi_(19)S_(27)Br_(3)and *** rate of CO formation using Bi_(19)S_(27)Br_(3)/BiOBr‐5 is about 8.74 and 2.40 times that using Bi_(19)S_(27)Br_(3)and BiOBr,*** work provides new insights for the application of Bi_(19)S_(27)Br_(3)as an electron‐accumulating site for achieving high photocatalytic CO2 reduction performance in the future.

摘要：The design of electrocatalysts with enhanced adsorption and activation of nitrogen(N2)is critical for boosting the electrochemical N2reduction(ENR).Herein,we developed an efficient strategy to facilitate N2 adsorption and activation for N2 electroreduction into ammonia(NH3)by vacancy engineering of core@shell structured Au@Sn O2 nanoparticles(NPs).We found that the ultrathin amorphous SnO2 shell with enriched oxygen vacancies was conducive to adsorb N2as well as promoted the N2 activation,meanwhile the metallic Au core ensured the good electrical conductivity for accelerating electrons transport during the electrochemical N2 reduction reaction,synergistically boosting the N2 electroreduction *** confirmed by the15N-labeling and controlled experiments,the core@shell Au@amorphous SnO2 NPs with abundant oxygen vacancies show the best performance for N2 electroreduction with the NH3 yield rate of 21.9 lg h-1mg-1catand faradaic efficiency of 15.2%at-10.2 VRHE,which surpass the Au@crystalline SnO2 NPs,individual Au NPs and all reported Au-based catalysts for ENR.

摘要：Two major challenges,high cost and short lifespan,have been hindering the commercialization process of lowtemperature fuel *** Wei's group has been focusing on decreasing cathode Pt loadings without losses of activity and durability,and their research advances in this area over the past three decades are briefly reviewed *** the Pt-based catalysts and the low Pt usage,they have firstly tried to clarify the degradation mechanism of Pt/C catalysts,and then demonstrated that the activity and stability could be improved by three strategies:regulating the nanostructures of the active sites,enhancing the effects of support materials,and optimizing structures of the three-phase *** Pt-free catalysts,especialiy carbon-based ones,several strategies that they proposed to enhance the activity of nitrogen-/heteroatom-doped carbon catalysts are firstly ***,an indepth understanding of the degradation mechanism for carbon-based catalysts is discussed,and followed by the corresponding stability enhancement ***,the carbon-based electrode at the micrometer-scale,faces the challenges such as low active-site density,thick catalytic layer,and the effect of hydrogen peroxide,which require rational structure design for the integral cathodic *** review finally gives a brief conclusion and outlook about the low cost and long lifespan of cathodic oxygen reduction catalysts.

摘要：Sn-based electrocatalysts have been gaining increasing attention due to their potential contribution in the conversion of CO2 into HCOOH driven by sustainable energy sources;however,their actual capability to catalyze CO2 reduction reaction(CO2RR)still cannot meet the requirements of commercial-scale *** developing Snbased catalyst is of vital ***,the sheet-like heterophase Sn O2/Sn3O4 with a high density of phase interfaces has been first engineered by a facile hydrothermal process,with Sn3O4 as the dominant *** evidences from experiments and theoretical simulation indicate that the charge redistribution and built-in electric field at heterophase interfaces boost CO2 adsorption and HCOO*formation,accelerate the charge transfer between the catalysts and reactants,and ultimately greatly elevate the intrinsic activity of the heterophase Sn O2/Sn3O4 towards CO2 ***,the in-situ generated porous structure and metal Sn during CO2 RR improve the mass transmission within the interlayer volume and the conductivity of Sn O2/*** heterophase Sn O2/Sn3O4 displays high activity and selectivity for CO2 RR,achieving an improvement in CO2 reduction current density,88.3%Faradaic efficiency of HCOOH conversion at-0.9 VRHE,along with a long-term tolerance in CO2 *** study demonstrates that heterophase interface engineering is an efficient strategy to regulate advanced catalysts for different applications.