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| 1 | In-situ synthesis of interconnected SWCNT/OMC framework on silicon nanoparticles for high performance lithium-ion batteries显示文摘In spite of silicon has a superior theoretical capacity, the large volume expansion of Si anodes during Li^+ insertion/extraction is the bottle neck that results in fast capacity fading and poor cycling performance. In this paper, we report a silicon, single-walled carbon nanotube, and ordered mesoporous carbon nanocomposite synthesized by an evaporation-induced self-assembly process, in which silicon nanoparticles and single-walled carbon nanotubes were added into the phenolic resol with F-127 for co-condensation. The ordered mesoporous carbon matrix and single-walled carbon nanotubes network could effectively accommodate the volume change of silicon nanoparticles, and the ordered mesoporous structure could also provide efficient channels for the fast transport of Li-ions. As a consequence, this hybrid material exhibits a reversible capacity of 861 mAh g^(-1) after 150 cycles at a current density of 400 mAg^(-1). It achieves significant improvement in the electrochemical performance when compared with the raw materials and Si nanoparticle anodes. | Weiwei Li Shimou Chen Jia Yu Daliang Fang Baozeng Ren Suojiang Zhang | 2016 | Green Energy & Environment2016，1，1： | 7 |
| 2 | Low-overpotential electrochemical ammonia synthesis using BiOCl-modified 2D titanium carbide MXene显示文摘Electrochemical synthesis of ammonia has the advantages of low energy consumption and promising environmental protection,as compared to the traditional Haber-Bosch process.However,the commercial utilization of this novel system is limited by the low Faradaic efficiency,poor ammonia yield and high overpotential due to the strong NN bond and the dominant competing reaction of hydrogen evolution reaction(HER).Herein,a BiOCl-modified two-dimensional(2D)titanium carbide MXenes nanocomposite(BiOCl@Ti_(3)C_(2)T_(x))is proposed as a promising electrocatalyst for ambient nitrogen(N_(2))reduction reaction with excellent catalytic performance and superior long-term stability at low overpotential.In 0.1 mol/L HCl,this catalyst attains a high Faradic efficiency of 11.98%and a NH_(3)yield of 4.06μg h^(-1)cm^(-2)at-0.10 V(vs.RHE),benefiting from its strong interaction of Bi 6p band with the N 2p orbitals,combined with its large specific surface area and the facile electron transfer. | Yu Wang Munkhbayar Batmunkh Hui Mao Hui Li Baohua Jia Shuyao Wu Daliang Liu Ximing Song Ying Sun Tianyi Ma | 2022 | Chinese Chemical Letters2022，33，1： | 2 |
| 3 | Transformation of Laves phases and its effect on the mechanical properties of TIG welded Mg-Al-Ca-Mn alloys显示文摘The effects of Al content and Ca/Al mass ratio on the microstructure and mechanical properties of tungsten inert gas(TIG)welded Mg-2Ca-x Al-0.5Mn(x=0,1,5)alloy joints were studied in present work.Results showed that increasing Al content was effective in reducing the dendrite spacing at the fusion zone(FZ)edge.The Laves phases in the FZ and the heat-affected zone(HAZ)can be changed from Mg_(2)Ca to(Mg,Al)_(2)Ca with the decrease of Ca/Al ratio,and the(Mg,Al)_(2)Ca could be further transformed to Al_(2)Ca under welding thermal cycle.Furthermore,dynamic dissolution and precipitation of Laves phases and Al_(8)Mn_(5)phases occurred in the HAZ,resulting in a gradient microstructure and hardness peak in this area.The tensile properties of the joints were significantly improved with the increase of Al content,which was mainly due to the modification of Laves phases. | Sensen Chai Shiyu Zhong Qingshan Yang Daliang Yu Qingwei Dai Hehe Zhang Limeng Yin Gang Wang Zongxiang Yao | 2022 | Journal of Materials Science & Technology2022，，25： | 2 |
| 4 | Growth of Cadmium Mercury Thiocyanate Dimethyl-sulphoxide Single Crystal for Laser Frequency Doubling显示文摘 | Guo Shiyi Yuan Duorong Xu Dong Zhang Guanghui Sun Suoying Meng Fanqing Wang Xinqiang Jiang Xuening Jiang Minhua Sun Daliang Yu Xiling | 2000 | Progress in Crystal Growth and Characterization of Materials2000，，： | 1 |
| 5 | MXene-assisted polymer coating from aqueous monomer solution towards dendrite-free zinc anodes显示文摘Coating polymer on the surface is an effective way to realize functional modification of the materials for diverse applications,which has been proved to enhance the stability of metal anodes in batteries.However,given the limited operability of coating from polymer dispersions,it is imperative to develop simple aqueous-based strategies from monomers for versatile polymer coating.Herein,a Ti_(3)C_(2)Tx MXene-assisted approach is proposed to construct polymer coating on zinc metal surfaces directly from the aqueous solution of monomers in an ice bath.By combining a doctor-blading method with spontaneous polymerization of monomers on the substrates at room temperature,a uniform,adhesive,and versatile coating layer assisted by a small amount of MXene is produced in one step.Additionally,MXene nanosheets serve as nanofillers to further enhance the mechanical strength and ionic conductivity of the polymer coating.Benefiting from good film formation and improved interfacial contact,the coated zinc anode exhibits a long cycling lifespan of over 1900 h.The assembled full cells show excellent cycling stability with a high capacity retention of 85.0%at 16 A g^(-1)over 2600 cycles.This work provides a simple and efficient way to produce polymer coatings directly from monomers,which may give new insights into design multifunctional polymer coatings for various applications. | Ning Wang Zhitan Wu Yu Long Derong Chen Chuannan Geng Xiaochen Liu Daliang Han Jing Zhang Ying Tao Quan-Hong Yang | 2022 | Journal of Energy Chemistry2022，31，10： | 0 |
| 6 | Solid-state bonding process induced highly synergistic mechanical properties of 6061 Al alloy joint by shear deformation显示文摘Obtaining a highly synergistic mechanical property between joint and base metal(BM)in aluminum(Al)alloy is a chronic problem.In this work,shear bonding technology is applied to a commercial 6061 Al alloy.The results show that a flat and uniform joint interface is obtained.The joint presents a highly synergistic mechanical property compared with BM,whether after shear bonding or heat treatment.The joint coefficient reaches 95.6%after shear bonding and exceeds 100%after heat treatment,which is better than the traditional connection method of aluminum alloy.The high joint coefficient mainly originates from the well-linked joint and gradient grain structure.The gradient grain structure is beneficial to activate more slip systems to coordinate plastic deformation.Although the fine-grained structure is sacrificed after heat treatment,higher strength and joint coefficient are obtained due to the higher work hardening.This newly developed method has a large potential for application to the infinite rolling of Al alloy sheets and can also be used for Al alloy connection in automobile,aerospace,rail transportation,and other fields.The findings in this work can provide essential theoretical support and application reference for the shear connection of Al alloy. | Peng Peng Jian Su Qingsong He Ruinan Chen Sensen Chai Daliang Yu Qingwei Dai Jian Lu | 2023 | Journal of Materials Science & Technology2023，，33： | 0 |
| 7 | Binary trinuclear metal-oxo sub-nanomaterials for photocatalytic hydrogen and chlorine production from seawater显示文摘Owing to the need for regenerant and self-reduction problem,the hydrogen performance of sub-nano-sized trinuclear iron-oxo complexes is still far from satisfied with affordability and practicality.Herein,two binary photocatalytic systems based on trinuclear metal-oxo complexes have been first constructed and experimentally confirmed to be competent for seawater hydrogen evolution(715.4and271.9μmol of hydrogen can be found,respectively,after 48h).Notably,chloride ions act as the hole catcher and move into the gas phase in the stable form of chlorine.Similar to heterogeneous structures,homogeneous systemsnot only enhance the hydrogen performance while ensuring the stability of metal-oxo complexes,but also shorten the consumption of photogenerated carriers by dissolved impurities in the seawater.This new attempt of building pluralistic sub-nanometric systems may offer novel design strategies with noble-metal-free catalysts and low-cost candidates for traditional semiconductor materials in enhancing photocatalytic efficiency and performing chlorine evolution from seawater splitting. | Yang Wang Litong Shi Haijun Hu Bingzhi Qian Wei Hou Hui Li Xue Liu Daliang Liu Shuyao Wu Hongwei Huang Xi-Ming Song Yu Zhang Tianyi Ma | 2022 | SusMat2022，2，6： | 0 |
| 8 | Low-Dose Electron Microscopy Imaging of Electron Beam-Sensitive Crystalline Materials显示文摘As one of the most widely used characterization tools in materials science,(scanning)transmission electron microscopy((S)TEM)has the unique ability to directly image specimens with atomic resolution.Compared to diffraction-based techniques,the main advantage of(S)TEM imaging is that in addition to the periodic average structures of crystalline materials,it can be used to probe nonperiodic local structures such as surfaces,interfaces,dopants,and defects,which have crucial impacts on material properties.However,many crystalline materials are extremely sensitive to electron beam irradiation,which can only withstand dozens(or even fewer)of electrons per square angstrom before they undergo structural damage.Although using electron doses lower than the thresholds can in principle preserve their structures,the thus acquired images are too noisy to be useful.Consequently,high-resolution imaging of the inherent structures of such electron beam-sensitive materials using(S)TEM is a longstanding challenge.In recent years,the advances in electron detectors and image-acquisition methods have enabled high-resolution(S)TEM with ultralow electron doses,largely overcoming this challenge.A series of highly electron beam-sensitive materials that are traditionally considered impossible to be imaged with(S)TEM,including metal organic frameworks(MOFs),covalent organic frameworks(COFs),organic−inorganic hybrid halide perovskites,and supramolecular crystals,have been successfully imaged at atomic resolutions.This technological advance has greatly expanded the application range of electron microscopy.This Account focuses on our recent works pertaining to the high-resolution imaging of electron beam-sensitive materials using very low electron doses.We first explain that the use of direct-detection electron-counting(DDEC)cameras provides the hardware basis for successful low-dose high-resolution TEM(HRTEM).Subsequently,we introduce a suite of methods to address the challenges peculiar to low-dose HRTEM,including rapid search for crystal zone axes,precise alignment of the image stack,and accurate determination of the defocus value.These methods,combined with the use of a DDEC camera,ensure efficient imaging of electron beam-sensitive crystalline materials in the TEM mode.Moreover,we demonstrate that integrated differential phase contrast STEM(iDPC-STEM)is an effective method for acquiring directly interpretable atomic-resolution images under low-dose conditions.In addition,we share our views on the great potential of four-dimensional STEM(4D-STEM)in imaging highly electron beamsensitive materials and provide preliminary simulation results to demonstrate its feasibility.Finally,we discuss the significance of developing(S)TEM specimen preparation techniques applicable for sensitive materials and the advantages of using the cryogenic focused ion beam(cryo-FIB)technique for this purpose. | Jia Lv Hui Zhang Daliang Zhang Lingmei Liu Yu Han | 2022 | Accounts of Materials Research2022，3，5： | 0 |
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