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Surface chemistry of electrode materials toward improving electrolyte-wettability:A method review

InfoMat 2024年第11期6卷 31-65页

作者： Lei Zhao Yuanyou Peng Peiyao Dou Yuan Li Tianqi He Fen Ran State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Department of Polymeric Materials Science and EngineeringSchool of Materials Science and EngineeringLanzhou University of TechnologyLanzhouthe People's Republic of China

The electrolyte-wettability at electrode material/electrolyte interface is a criticalfactor that governs the fundamental mechanisms of electrochemical reactionefficiency and kinetics of electrode materials in practical electrochemicalenergy storage. Therefore, the design and construction of electrode materialsurfaces with improved electrolyte-wettability has been demonstrated to beimportant to optimize electrochemical energy storage performance of electrodematerial. Here, we comprehensively summarize advanced strategies and keyprogresses in surface chemical modification for enhancing electrolytewettabilityof electrode materials, including polar atom doping by post treatment,introducing functional groups, grafting molecular brushes, and surfacecoating by in situ reaction. Specifically, the basic principles, characteristics,and challenges of these surface chemical strategies for improving electrolytewettabilityof electrode materials are discussed in detail. Finally, the potentialresearch directions regarding the surface chemical strategies and advancedcharacterization techniques for electrolyte-wettability in the future are *** review not only insights into the surface chemical strategies forimproving electrolyte-wettability of electrode materials, but also provides strategicguidance for the electrolyte-wettability modification and optimization ofelectrode materials in pursuing high-performance electrochemical energy storagedevices.

关键词： chemical modification electrochemical energy storage electrode materials electrode/electrolyte interface surface chemistry

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Beam oscillating parameters on pore inhibition,recrystallization and grain boundary characteristics of laser-arc hybrid welded AZ31 magnesium alloy

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Journal of Magnesium and Alloys 2024年第6期12卷 2489-2502页

作者： Kangda Hao Yongkang Gao Lianyong Xu Yongdian Han Lei Zhao Wenjin Ren Hongyang Jing School of Materials Science and Engineering Tianjin UniversityTianjin300350PR China Tianjin Key Laboratory of Advanced Joining Technology Tianjin300350PR China

Oscillating laser-arc hybrid welding of AZ31B magnesium alloy was carried out,the effects of beam oscillation parameters on pore inhibition,microstructure,grain boundary characteristics and tensile properties were *** results showed that the pore formation can be inhibited with oscillating frequency higher than 75 Hz and radius smaller than 0.5 *** columnar grains neighboring the fusion line can be broken by the beam oscillation behavior,while the grain growth was promoted with the increase of frequency or *** should be noted that the coincidence site lattice(CSL)boundaries were mainlyΣ13b andΣ29 boundaries,which were contributed by{10■2}tensile twins and{11■2}compression twins,*** total fraction of CSL boundaries reached maximum at radius of 0.25 mm and frequency of 75 Hz,which was also confirmed as the optimized *** this case,the elongation rate increased up to 13.2%,12.8%higher than that of the weld without beam ***,the pore formation and inhibition mechanisms were illustrated according to the state of melt flow and keyhole formation,the abnormal growth was discussed basing on secondary recrystallization,and the relationship among the pore formation,grain size,boundary characteristics and weld toughness were finally established.

关键词： Magnesium alloy Laser-arc hybrid welding Beam oscillation Recrystallization Mechanical properties

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Crystalline/Non-Crystalline Carbon Co-Modified Strategy to Construct N,S Co-Doped Carbon Layer Wrapped Fe_(0.95)S_(1.05)/Carbon Nanotubes for Enhanced Lithium Storage Property

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Acta Metallurgica Sinica(English Letters) 2025年第1期38卷 93-101页

作者： Liang Chen Lan−Yun Yang Li−Ting Zeng Xu Liu Xin−Rui Li Yu−Shan Tian Wei Wang Gang−Yong Li Chen−Xi Xu Zhao−Hui Hou Key Laboratory of Hunan Province for Advanced Carbon‒based Functional Materials School of Chemistry and Chemical EngineeringHunan Institute of Science and TechnologyYueyang414006China College of Materials Science and Engineering Central South University of Forestry and TechnologyChangsha410004China

Due to their high theoretical capacity and abundant resources,transition metal sulfides are regarded as a prospering alternative to replace the commercial graphite anode in lithium-ion batteries(LIBs),particularly for large-scale energy storage and conversion ***,low conductivity,easy agglomeration and obvious volume change greatly impede their practical *** this work,a novel crystalline/non-crystalline carbon co-modified strategy is proposed to fabricate N,S co-doped carbon(NSC)layer wrapped Fe_(0.95)S_(1.05)/carbon nanotubes(CNTs)composite(Fe_(0.95)S_(1.05)/CNTs@NSC)through a simple Fenton reaction followed by a sulfurization *** characterizations and analyses reveal that this strategy well combines the advantages of crystalline CNTs and non-crystalline NSC,ensuring good conductivity and a high contribution to capacity from the carbon ***,the joint encapsulation of Fe_(0.95)S_(1.05)by both CNTs and NSC can significantly mitigate the agglomeration and volume change of Fe_(0.95)S_(1.05)during the continuous charge/discharge *** from these advantageous features,the resultant Fe_(0.95)S_(1.05)/CNTs@NSC composite displays much improved cycling stability and rate capability when compared to the ***,our research offers a distinct and innovative approach to design and construct advanced transition metal sulfides/carbon composite anodes for LIBs.

关键词： Lithium-ion batteries Crystalline/non-crystalline carbon Joint encapsulation Fe_(0.95)S_(1.05)/CNTs@NSC Lithium storage property

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Tailoring mechanical heterogeneity,nanoscale creep deformation and optical properties of nanostructured Zr-based metallic glass

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Rare Metals 2023年第10期42卷 3430-3442页

作者： Jing-Xian Cui Qiang Luo Zheng-Guo Zhang Jing-Tao Zhu Bao-Long Shen School of Materials Science and Engineering Jiangsu Key Laboratory for Advanced Metallic MaterialsSoutheast UniversityNanjing211189China School of Physics Science and Engineering Tongji UniversityShanghai200092China

Metallic glasses are spatially heterogeneous at the nanometer ***,the effects of external excitation on their structural and mechanical heterogeneity and the correlation to their properties are still ***,atomic force microscopy(AFM) and high-resolution transmis sion elec tron micro scopy(HRTEM) were carried out to explore the effects of cryogenic thermal cycling(CTC) on mechanical/structural heterogeneity,nano sc ale creep deformation and optical properties of nano structured metallic glass thin films(MGTFs).The results indicate that CTC treatment alters the distribution fluctuations of hardness/modulus and energy dissipation and results in an increase-then-decrease variation in mechanical *** applying Maxwell-Voigt model,it can be shown that CTC treatment results in a remarkable activation of more defects with longer relaxation time in soft regions but has only a slight effect on defects in hard *** addition,CTC treatment increases the transition time from primary-state stage to steady-state stage during creep *** enhanced optical reflectivity of the MGTFs after 15 thermal cycles can be attributed to increased aggregation of Cu and Ni *** results of this study shed new light on understanding mechanical/structural heterogeneity and its influence on nanoscale creep deformation and optical characteristics of nanostructured MGTFs,and facilitate the design of high-performance nanostructured MGTFs.

关键词： Metallic glass thin films(MGTFs) Cryogenic thermal cycling(CTC) Structural heterogeneity Mechanical and creep properties Optical characteristics

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The Contact interface engineering of All-Sulfide-Based Solid State Batteries via Infiltrating Dissoluble Sulfide Electrolyte

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Energy & Environmental materials 2023年第6期6卷 364-371页

作者： Lei Xi Yu Li Dechao Zhang Zhengbo Liu Xijun Xu Jun Liu Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510641China

All-solid-state lithium batteries(ASSLBs)based on sulfide solid electrolytes(SEs)are one of the most promising strategies for next-generation energy storage systems and electronic ***,the poor chemical/electrochemical stability of sulfide SEs with oxide cathode materials and high interfacial impedance,particularly due to physical contact failure,are the major limiting factors to the development of sulfide SEs in ***,the composite cathode of MOF-derived Fe_(7)S_(8)@C and Li_(6)PS_(5)Br fabricated by an infiltration method(IN-Fe_(7)S_(8))with dissoluble sulfide electrolyte(dissoluble SE)is *** SE can easily infiltrate the porous sheet-type Fe_(7)S_(8)@C cathode to homogeneously contact with Fe_(7)S_(8)nanoparticles that are embedded in the surrounding carbon matrixes and form a fast ionic transport *** from applying dissoluble SE and Fe_(7)S_(8)@C,the IN-Fe_(7)S_(8)-based cells displayed a reversible capacity of 510 mAh g^(-1)after 180 cycles at 0.045 mA cm^(-2)at 30℃.This work demonstrates a novel and practical method for the development of high-performance all-sulfide-based solid state batteries.

关键词： all-solid-state lithium batteries infiltration ionic transport iron sulfide sulfide solid electrolyte

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Benzo[1,2-b:4,5-b']difuran-based Narrow Bandgap Polymers for Efficient Organic Solar Cells Using Perylene Diimides-type Nonfullerene Acceptors

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Chinese Journal of Polymer science 2025年第5期43卷 711-717页

作者： Zhen-Yu Wu Jun-Feng Liu Xin-Zhu Tong Yan-Jie Sun Xun-Chang Wang Ren-Qiang Yang Xiang Gao Ming Shao Peng-Cheng Li Zhi-Tian Liu Institute of Materials for Optoelectronics and New Energy Hubei Key Laboratory of Plasma Chemistry and Advanced MaterialsSchool of Materials Science and EngineeringWuhan Institute of TechnologyWuhan430205China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan430074China Key Laboratory of Optoelectronic Chemical Materials and Devices(Ministry of Education) School of Optoelectronic Materials&TechnologyJianghan UniversityWuhan430056China

The development of narrow-bandgap polymer donors with complementary absorption and matched energy levels for perylene diimides(PDI)-based nonfullerene acceptors(NFAs)has received little *** high-lying highest occupied molecular orbital(HOMO)level and low degree of crystallinity of the star donor polymer PCE10 limit its application in PDI-based Organic solar cells(OSCs).In this study,two benzo[1,2-b:4,5-b′]difuran(BDF)-based narrow-bandgap polymer donors,PBDF and PBDFCl,were synthesized to improve the photovoltaic performance of PDI-based *** smaller BDF moiety with higher electronegativity endows the resulting polymers with stronger aggregation and lower HOMO energy *** power conversion efficiency(PCE)value of the PBDF:Ph(PDI)3-based OSCs was 7.24%,which is much higher than that of PCE10-based OSCs(6.09%).Further chlorination of the conjugated side chain elevated the PCE to 8.84%,which is 1.4 times higher than that of PCE10-based *** results demonstrate the significant contribution of designing novel narrow-bandgap polymer donors to boost the PCE of PDI-based OSCs and highlight the importance of matching the aggregation behaviors of polymeric donor materials with that of NFAs.

关键词： Organic solar cells Narrow-bandgap polymers Benzo[1,2-b:4,5-b']difuran Perylene diimides-type nonfullerene acceptors

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Microstructure homogeneity and mechanical properties of laser-arc hybrid welded AZ31B magnesium alloy

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Journal of Magnesium and Alloys 2024年第5期12卷 1986-1995页

作者： Yongkang Gao Kangda Hao Lianyong Xu Yongdian Han Lei Zhao Wenjing Ren Hongyang Jing School of Materials Science and Engineering Tianjin UniversityTianjin 300350PR China Tianjin Key Laboratory of Advanced Joining Technology Tianjin 300350PR China

Laser-arc hybrid welding of AZ31B magnesium alloy was carried out,the effects of welding parameters on weld formation,microstructure homogeneity and mechanical properties were *** results showed that laser-arc hybrid welding was beneficial to improve the weld formation of magnesium alloy by inhibiting the defect of undercut and *** weld microstructure was mainly columnar grains neighboring the fusion line and equiaxed grains at the weld *** was interesting that the grain size at the upper arc zone was smaller than that at the lower laser zone,with the difference mainly affected by laser power rather than welding current and welding *** welding parameters were optimized as laser power of 3.5 kW,welding current of 100 A and welding speed of 1.5 m/*** this case,the weld was free of undercut and pores,and the tensile strength and elongation rate reached 252 MPa and 11.2%,***,the microstructure homogeneity was illustrated according to the heat distribution,and the evolution law of tensile properties was discussed basing on the weld formation and microstructure characteristics.

关键词： Magnesium alloy Laser-arc hybrid welding Microstructure homogeneity Mechanical properties

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Multi-scale dispersion strengthening for high-temperature titanium alloys:Strength preservation and softening mechanisms

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材料科学技术（英文版） 2025年第3期206卷 1-14页

作者： Xin Chen Lujun Huang Shuo Ma Fengbo Sun Shuai Wang Lin Geng School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China

The long-lasting expectation"the hotter the engine,the better"calls for the development of high-temperature metallic *** the high specific strengths of titanium alloys are compelling for such applications,their deleterious softening beyond 600 ℃ imposes serious *** has been known for decades regarding the phase metallurgy for precipitation strengthening design in titanium al-loys,however,the other facile strength promotion mechanism,dispersion strengthening,remains compar-atively less-explored and *** present research concerns the multi-scale dispersion strength-ening in titanium alloys,with mechanistic emphases on the critical plasticity micro-events that affect strength *** to the simultaneous introduction of intragranular dispersoids and intergran-ular reinforcers,the current titanium alloys present superior engineering tensile strength of 519 MPa at 700 ℃.Throughout the examined 25-800 ℃ temperature range,noticeable softening induced by the ther-mal activation occurs above 600 ℃,accompanied by evident strength *** temperature-dependence transition of dominated softening mechanisms from dynamic recovery to dynamic recrystallization has been clarified by theoretical ***,the strengthening effect of multi-scale architec-tures is underpinned as the enhanced dislocation strengthening owing to the introduction of thermally-stable heterointerfaces,which could generically guide the design of similar heat-resistant titanium alloys.

关键词： Titanium-based alloys Multi-scale architectures Mechanical properties Temperature dependence Dislocation strengthening

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Understanding the Reversible Reactions of Li-N_(2) Battery Catalyzed With SnO_(2)

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Energy & Environmental materials 2023年第1期6卷 340-348页

作者： Fanbo Meng Jiayao Qin Xingyu Xiong Xiangjie Li Renzong Hu Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510640China

Metal–N_(2) battery can be applied in both energy storage and electrochemical nitrogen reduction reaction(NRR);however,there has been only extraordinarily little study on metal–N_(2) battery since its electrochemical reversibility still needs further *** its electrochemical performances also need to be ***,we investigated the discharge–charge reactions between Li anode and N_(2) cathode via designing an efficient catalyst of nanosized SnO_(2) particles dispersed on N-doped carbon nanosheets(SnO 2@NC)for the Li-N_(2) battery,with good cyclic stability and a high specific capacity of 0.25 mA h(~500 mA h g^(−1))at a large current density of 1000 mA g^(−1).The electrochemical reversibility of both NRR in the discharge process and nitrogen extraction reaction in the charge process for Li-N 2 battery is ***-of-flight secondary ion mass spectrometry results imply that the SnO_(2)@NC can effectively promote the adsorption of N_(2) and the activation of NRR in the discharge ***,ex situ X-ray photoelectron spectroscopy and Fourier transform infrared tests are performed to study the electrochemical reversibility of Li-N_(2) *** can be proved that the formation and decomposition of discharging product Li_(3)N are electrochemical reversible during cycling in our deigned Li-N_(2) battery system with SnO_(2)@NC catalyst.

关键词： Li-N_(2)batteries nitrogen reduction reaction reversible energy conversion SnO_(2)

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Review on modification routes for SnO_(x)-based anodes for Li storage:morphological structure tuning and phase structure design

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Rare Metals 2023年第9期42卷 2840-2867页

作者： Yu Zheng Xue-Xia Lan Xing-Yu Xiong Bin Yuan Ren-Zong Hu School of Materials Science and Engineering Guangdong Provincial Key Laboratory of Advanced Energy Storage MaterialsSouth China University of TechnologyGuangzhou510640China

Fascinating with high specific capacity and moderate lithiation potential,SnO_(x)-based materials have been intensively investigated as one of the most promising anodes for lithium-ion ***,due to poor cycling stability,sluggish reaction kinetics,and limited electrochemical reaction reversibility,the development of SnO_(x)-based anodes has been *** the current preparation and modification routes for SnO_(x)-based anodes lack direct and specific ***,modification routes for SnO_(x)-based anodes have been ***,to provide more direct instructions,the tuning routes of morphological structure for SnO_(x)-based electrodes(including slurry-based and self-supported)have been thoroughly discussed from the preparation ***,according to the properties of SnO_(x)-based anodes,the phase structure design ideas have also been properly classified and organized for addressing chemical reaction kinetics or thermodynamic ***,for future-oriented studies,new insights into the development and commercialization prospects of SnO_(x)-based anodes are also *** review,with comprehensive information on SnO_(x)-based anodes,aims to bring more specific guidance and valuable inspiration for peer researchers who are promoting the application of SnO_(x)-based materials for energy conversion and storage devices.

关键词： Lithium-ion battery(LIB) SnO_(x)-based anodes Reaction kinetics Morphological structure tuning Phase structure design

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