摘要：The catalytic effect of electrode materials is one of the most crucial factors for achieving efficient electrochemical energy conversion and ***-based metal composites were widely synthesized and employed as electrode materials because of their inherited outstanding ***,electrode materials can provide a higher capacity than the anticipated values,even beyond the theoretical *** origin of the extra capacity has not yet been explained accurately,and its formation mechanism is still ***,we first summarized the current research progress and drawbacks in energy storage devices(ESDs),and elaborated the role of catalytic effect in enhancing the performance of ESDs as follows:promoting the evolution of the solid electrolyte interphase(SEI),accelerating the reversible conversion of discharge/charge products,and improving the conversion speed of the intermediate and the utilization rate of the active materials,thereby avoiding the shuttling ***,a particular focus was placed on the interaction between the catalytic effect and energy storage performance in order to highlight the efficacy and role of the catalytic *** hope that this review could provide innovative ideas for designing the electrode materials with an efficient catalytic effect for ESDs to promote the development of this research field.

摘要：Efficient multi-resonance thermally activated delayed fluorescence(MR-TADF)materials hold significant potential for applications in organic light-emitting diodes(OLEDs)and ultra-high-definition ***,the stringent synthesis conditions and low yields typically associated with these materials pose substantial challenges for their practical *** this study,we introduce an innovative strategy that involves peripheral modification with sulfur and selenium atoms for two materials,CFDBNS and *** approach enables a directed one-shot borylation process,achieving synthesis yields of 66%and 25%,respectively,while also enhancing reverse intersystem crossing *** emitters exhibit ultra-narrowband sky-blue emissions centered around 474 nm,with full width at half maximum(FWHM)values as narrow as 19 nm in dilute toluene solutions,along with high photoluminescence quantum yields of 98%and 99%in doped films,*** OLEDs based on CFDBNS and CFDBNSe display sky-blue emissions with peaks at 476 and 477 nm and exceptionally slender FWHM values of 23 ***,the devices demonstrate remarkable performances,achieving maximum external quantum efficiencies of 24.1%and 27.2%.This work presents a novel and straightforward approach for the incorporation of heavy atoms,facilitating the rapid construction of efficient MR-TADF materials for OLEDs.

摘要：Carbonyl compounds with elements of C, H, and O and reversible redox-active centers are promising elec- trode materials in rechargeable batteries owing to their high theoretical capacity, structure flexibility and resources abun- dance. However, the low conductivity and the dissolution of active molecules in organic electrolyte limit the practical ap- plication. Immobilizing the carbonyls on graphene provides a simple approach to address these two issues. However, most reported interaction between carbon-based substrates and carbonyl compounds is weak π-π interaction, which is not strong enough to prohibit the detachment of active ma- terials from carbon surface, and thus leading to undesirable cycling performance. Herein, we applied the first principle calculations to study the carbonyls-graphene interaction and found that the weak rc-a interaction can be rationally converted to the strong a-Li-~~ interaction via introducing the groups containing Li atoms. The introduced Li atoms can cooperatively bind with the two aromatic a components through the covalent Li-carbonyl compounds interaction and Li-graphene interaction. The concept of ~（-Li-Tr interaction provides a versatile method to suppress the dissolution of active materials and increase the electronic conductivity at the same time, which gains insight into the design of organic electrode materials for rechargeable batteries with high performance.

摘要：Controlling the local electronic structure of active ingredients to improve the adsorption desorption characteristics of oxygen-containing intermediates over the electrochemical liquid-solid interfaces is a critical challenge in the field of oxygen reduction reaction(ORR)***,we offer a simple approach for modulating the electronic states of metal nanocrystals by bimetal co-doping into carbon-nitrogen substrate,allowing us to modulate the electronic structure of catalytic active *** test our strategy,we designed a typical bimetallic nanoparticle catalyst(Fe-Co NP/NC)to flexibly alter the reaction kinetics of *** results from synchrotron Xray absorption spectroscopy and X-ray photoelectron spectroscopy showed that the co-doping of iron and cobalt could optimize the intrinsic charge distribution of Fe-Co NP/NC catalyst,promoting the oxygen reduction kinetics and ultimately achieving remarkable ORR ***,the carefully designed Fe-Co NP/NC exhibits an ultra-high kinetic current density at the operating voltage(71.94 mA/cm^(2)at 0.80 V),and the half-wave potential achieves 0.915 V,which is obviously better than that of the corresponding controls including Fe NP/NC,Co NP/*** findings provide a unique perspective for optimizing the electronic structure of active centers to achieve higher ORR catalytic activity and faster kinetics.

摘要：Constructing bismuth oxyhalide solid solutions with a single homogeneous phase have intrigued the research community;however,a deeper understanding of the intrinsic origin for improved bulk-charge separation is still ***,a series of Bi_(24)O_(31)Cl_(x)Br_(10-x) solid solutions with the same structural characteristics were synthesized by crystal structure *** density functional theory calculation,Kelvin probe force microscopy,and zeta potential testing results,an enhanced internal electric field(IEF)intensity between[Bi_(24)O_(31)]and[X]layers was achieved by changing halogen types and *** greatly facilitated bulk-charge separation and transfer efficiency,which is significant for the degradation of phenolic organic *** to the enhanced IEF intensity,the charge carrier density of Bi_(24)O_(31)Cl_(4)Br_(6) was 33.1 and 4.7 times stronger than that of Bi_(24)O_(31)Cl_(10) and Bi_(24)O_(31)Br_(10),***,Bi24O31Cl4Br6 had an optimal photoactivity for the degradation of bisphenol A,which was 6.21 and 2.71 times higher than those of Bi_(24)O_(31)Cl_(10) and Bi_(24)O_(31)Br_(10),***,this study revealed the intrinsic mechanism of the solid solution strategy for photocatalytic performance enhancement with respect to an IEF.

摘要：Electrochemical water splitting is regarded as the most promising approach to produce ***,the sluggish electrochemical reactions occurring at the anode and cathode,namely,the oxygen evolution reaction(OER)and the hydrogen evolution reaction(HER),respectively,consume a tremendous amount of energy,seriously hampering its wide ***,single-atom catalysts(SACs)have been proposed to effectively enhance the kinetics of these two *** this minireview,we focus on the recent progress in SACs for OER and HER *** classes of SACs have been reviewed,i.e.,alloy-based SACs,carbon-based SACs and SACs supported on other *** factors affecting the activities of SACs are also highlighted,including the inherent element property,the coordination environment,the geometric structure and the loading amount of metal ***,we summarize the current problems and directions for future development in SACs.

摘要：剪切增稠型聚硼硅氧烷(PBS)通常以“silly putty”,“bouncing putty”或“solid-liquid”被熟知.因其独特的抗冲击性能,PBS广泛应用于防护装甲、运动器材、玩具等领域.然而,自第二次世界大战PBS被发明后,PBS材料的更新升级较少.本论文中,我们通过设计联硼/氧配位键制备了一类新型剪切增稠材料——聚联硼硅氧烷(PDBS).结果表明,与单硼/氧配位键相比,联硼/氧配位键具有更多的配位结构和更高的键能,导致PDBS具有更类固体性的剪切增稠行为.因此,PDBS具有比PBS更优异的抗冲击性能与防护功能,为新一代智能装备、阻尼器和传感器的开发提供了一类高性能防护材料.

摘要：Two-dimensional(2D)mesoporous metal-oxide(hydroxide)nanomaterials with defects are promising towards the realization of efficient ***,we report a facile and effective one-pot solvothermal route to synthesize mesoporous Mo_(x)-Co-O hybrid nanosheets(NSs)which is composed of crystalline Mo_(4)O_(11) and amorphous cobalt *** to the corrosion of 1-octylamine at high temperatures,abundant mesoporous holes are created in situ over the Mo_(x)-Co-O hybrid NSs during the solvothermal process,which is beneficial to increasing the electrochemical surface *** dimension of the Mox-Co-O NSs,size of mesoporous and the concentration of defects can be easily modulated by controlling the molar ratio of Mo/*** measurements reveal that the 2D mesoporous Mo_(x)-Co-O NSs show an excellent activity for the oxygen evolution reaction with the highest catalytic activity of η_(10)=276 mV at 10 mA cm^(−2)in 1 mol L^(−1)*** adsorption of intermediates and abundant oxygen vacancies achieved by appropriate Mo doping are the two main factors that contribute to the excellent catalytic activity of Mo_(0.2)-Co-O *** work,with the construction of 2D metal-oxide(hydroxide)crystallineamorphous nanomaterials possessing abundant holes,oxygen vacancies and enhanced adsorption of intermediates,provides important insight on the design of more efficient catalysts.

摘要：Significant progress on the development of nonfullerene acceptors(NFAs)for organic solar cells(OSCs)has been made in the past several years,and the power conversion efficiency(PCE)exceeding 17%has been already realized based on a tandem non-fullerene *** date,NFAs with a linearly fused acceptor-donor-acceptor(A-D-A)structure are of great interest,due to their attracting synthetic flexibility and high photovoltaic *** is one of the most studied electron-withdrawing moieties to construct such A-D-A type NFAs,and the resulting single-junction OSCs have produced PCEs of^10%.More interestingly,those rhodanine-based NFAs have demonstrated a particularly excellent compatibility with well-known P3HT donor,enabling respectable PCEs over 7%.Thus in this review,we summarize the important advances on rhodanine-based NFAs with a main focus on discussing the molecular design strategies,providing a better understanding of the structure-property relationship for those rhodanine-based NFAs.

摘要：Wire-shaped supercapacitors（SCs） possessing light-weight, good flexibility and weavability have caught much attention, but it is still a challenge to extend the lifespan of the devices with gradual aging due to the rough usage or external factors. Herein, we report a new stretchable and selfhealable wire-shaped SC. In the typical process, two polyvinyl alcohol/potassium hydroxide（PVA/KOH） hydrogel wrapped with urchin-like NiCo2O4 nanomaterials were twisted together to form a complete SC devices. It is noted that the as-prepared PVA hydrogel can be easily stretched up to 300% with small tensile stress of 12.51 kPa, superior to nearly 350 kPa at 300%strain of the polyurethane. Moreover, the wire-like SCs exhibit excellent electrochemical performance with areal capacitance of 3.88 mF cm^-2 at the current density of 0.053 mA cm^-2, good cycling stability maintaining 88.23% after 1000 charge/discharge cycles, and 82.19% capacitance retention even after four damaging/healing cycles. These results indicate that wireshaped SCs with two twisted NiCo2O4 coated polyvinyl alcohol hydrogel fibers is a promising structure for achieving the goal of high stability and long-life time. This work may provide a new solution for new generation of self-healable and wearable electronic devices.