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Nano Research 2024年第6期17卷 5179-5187页

作者： Jinlei Qin Rui wang Zilong Yuan Pei Xiao deli wang Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of EducationHubei Key Laboratory of Material Chemistry and Service FailureSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Lithium-sulfur(Li-S)batteries have been considered as promising energy storage systems due to the merits of high energy density and low ***,the lithium polysulfides(LiPSs)diffusion and sluggish redox kinetics hamper t... 详细信息

关键词： Li-S batteries nitrogen-doped carbon confinement oxygen vacancies bidirectional Li_(2)S redox

Surface reconstruction enabled o-PdTe@Pd core-shell electrocatalyst for efficient oxygen reduction reaction

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Chinese Chemical Letters 2024年第8期35卷 314-318页

作者： Min Song Qian Zhang Tao Shen Guanyu Luo deli wang Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of EducationSchool of Chemistry and Chemical EngineeringHuazhong University of Science and Technology(HUST)Wuhan 430074China

Palladium-based alloy catalysts have been employed as one of the potential candidates for oxygen reduc-tion reaction(ORR),but the dissolution of transition metal hinders their ***,structure or-dered PdTe intermetallic with Pd shell(o-PdTe@Pd)are synthesized via an electrochemical etching driven surface reconstruction *** surface reconstruction could tune the electronic structure,weaken the adsorption energy of reaction intermediates on o-PdTe@Pd,resulting in enhanced electrocatalytic ac-tivity for *** mass activity of o-PdTe@Pd is about 3.3 and 2.7 times higher than that of Pd/C in acid and alkaline,***,the half-potentials for ORR decay only about 44 mV and 12 mV after 30 k cycles accelerated durability test in acid and alkaline media,*** enhanced dura-bility originates from the resistance of Te atoms dissolve in the ordered PdTe intermetallic core and the core-shell *** assembled in a Zn-air battery,o-PdTe@Pd electrode delivers a higher specific capacity(794 mAh/g)and better cycling stability than Pt/C.

关键词： Surface reconstruction Core-shell structure Intermetallic Oxygen reduction reaction Tellurium

Advances of Synergistic Electrocatalysis Between Single Atoms and Nanoparticles/Clusters

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Nano-Micro Letters 2024年第11期16卷 377-412页

作者： Guanyu Luo Min Song Qian Zhang Lulu An Tao Shen Shuang wang Hanyu Hu Xiao Huang deli wang Key Laboratory of Material Chemistry for Energy Conversion and Storage(Huazhong University of Science and Technology)Ministry of Education School of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074People’s Republic of China

Combining single atoms with clusters or nanoparticles is an emerging tactic to design efficient *** synergy effect and high atomic utilization of active sites in the composite catalysts result in enhanced electrocatalytic performance,simultaneously provide a radical analysis of the interrelationship between structure and *** this review,the recent advances of single-atomic site catalysts coupled with clusters or nanoparticles are ***,the synthetic strategies,characterization,dynamics and types of single atoms coupled with clusters/nanoparticles are introduced,and then the key factors controlling the structure of the composite catalysts are ***,several clean energy catalytic reactions performed over the synergistic composite catalysts are ***,the encountering challenges and recommendations for the future advancement of synergistic structure in energy-transformation electrocatalysis are outlined.

关键词： Single atoms Nanoparticles Clusters Synergistic composite catalysts Synergistic effect

Optimizing the ORR performance of PtMnM ternary intermetallics by tuning the surface strain

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Science China Chemistry 2024年

作者： Min Song Guanyu Luo Qian Zhang Hanyu Hu deli wang Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology (HUST)

Identifying the descriptors that control catalytic performance is key to design catalysts with high activity and stability. As indirect descriptors related to catalytic activity, modulating the Pt–Pt interatomic distance and d-band center can effectively enhance the ORR activity. It is well recognized that the Pt–Pt interatomic distance is strongly correlated with the surface strain. Herein,PtMnM/C ternary intermetallics are constructed through partially replacing Mn in PtMn/C binary intermetallics with the other transition metal（M = Fe, Co, Ni, and Cu）. The 3d-transition metal doping induces surface strain, and the ORR performance of PtMnM/C exhibits volcano relationship relative to both the Pt–Pt interatomic distance and d-band center. The PtMnCo/C with optimum strain exhibits the highest mass activity(1.06 A mg-1Pt) at 0.9 V, which is 2.6 and 4.6 times higher than that of PtMn/C and commercial Pt/C catalysts, respectively. In addition, PtMnCo/C shows good durability with only 10 mV half-wave potential decay after 50,000 potential cycles.

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Recent progress in heterostructured materials for room-temperature sodium-sulfur batteries

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Interdisciplinary Materials 2024年第4期3卷 565-594页

作者： Haobin Song Yifan Li Xue LLi Yixiang Li Dong-sheng Li deli wang Shaozhuan Huang Hui Ying Yang Pillar of Engineering Product Development Singapore University of Technology and DesignSingaporeSingapore Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials College of Materials and Chemical EngineeringChina Three Gorges UniversityYichangChina Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of EducationHubei Key Laboratory of Material Chemistry and Service FailureSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhanChina Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education&Hubei Key Laboratory of Catalysis and Materials Science South-Central Minzu UniversityWuhanChina

Room-temperature sodium-sulfur(RT Na-S)batteries are a promising next-generation energy storage device due to their low cost,high energy density(1274 Wh kg^(-1)),and environmental ***,RT Na-S batteries face a series of vital challenges from sulfur cathode and sodium anode:(i)sluggish reaction kinetics of S and Na_(2)S/Na_(2)S_(2);(ii)severe shuttle effect from the dissolved intermediate sodium polysulfides(NaPSs);(iii)huge volume expansion induced by the change from S to Na_(2)S;(iv)continuous growth of sodium metal dendrites,leading to short-circuiting of the battery;(v)huge volume expansion/contraction of sodium anode upon sodium plating/stripping,causing uncontrollable solid-state electrolyte interphase growth and“dead sodium”*** strategies have been proposed to address these issues,including physical/chemical adsorption of NaPSs,catalysts to facilitate the rapid conversion of NaPSs,high-conductive materials to promote ion/electron transfer,good sodiophilic Na anode hetero-interface homogenized Na ions flux and three-dimensional porous anode host to buffer the volume expansion of *** materials can combine these merits into one material to realize ***,the recent development of heterostructure as the host for sulfur cathode and Na anode has been *** of all,the electrochemical mechanisms of sulfur cathode/sodium anode and principles of heterostructures reinforced Na-S batteries are ***,the application of heterostructures in Na-S batteries is comprehensively ***,the current primary avenues of employing heterostructures in Na-S batteries are *** and prospects are put forward regarding the existing problems in current research,aiming to inspire the design of advanced and improved next-generation Na-S batteries.

关键词： heterostructured materials polysulfides shuttle effect sodiophilic Na anode sodium sulfur

振荡浮子式波能装置的功率计算分析及参数设计

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哈尔滨工程大学学报 2024年第2期45卷 406-414页

作者：王德莉李霁杨雯任志聪张晓燕史加荣姚继涛西安建筑科技大学理学院陕西西安710055 北京高德云图科技有限公司北京100020 西安建筑科技大学土木工程学院陕西西安710055

波浪能是重要的可再生资源之一,提高波浪能装置的能量捕获率是波浪能规模化利用的关键。本文对波浪能的能量转换装置进行了研究,针对装置于不同摇荡条件下的最大平均输出功率、最优阻尼系数及相关参数进行演化分析及求解。利用牛顿定律... 详细信息

波浪能是重要的可再生资源之一,提高波浪能装置的能量捕获率是波浪能规模化利用的关键。本文对波浪能的能量转换装置进行了研究,针对装置于不同摇荡条件下的最大平均输出功率、最优阻尼系数及相关参数进行演化分析及求解。利用牛顿定律及质心系、转动惯量等建立二自由度、四自由度波浪能转换装置耦合运动模型,基于时间离散化的差分原理求解,同时采用模拟退火算法降低时间复杂度,提出了改良的粒子群算法,得到较为准确的结果,为实际工程中波浪能的高效采集提供思路和途径。

关键词：波能转换装置纵摇垂荡耦合模式振动力学原理最大平均输出功率参数设计算法优化

联合噪声驱动下耦合记忆阻尼Rayleigh振子族的节律模式过渡分析

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力学学报 2024年第8期56卷 2381-2396页

作者：王德莉李晨莹吴炳增焦一宇裴海清徐伟西安建筑科技大学理学院西安710055 空军军医大学第一附属医院超声医学科西安710032 西北工业大学力学与土木建筑学院西安710072 西北工业大学数学与统计学院西安710072

提出引致联合噪声驱动下耦合记忆阻尼Rayleigh振子族的单节律性(monorhythmicity)、双节律性(birhythmicity)及三节律性(trirhythmicity)振态模式过渡的参数设计方案.应用多尺度扩展、随机平均等方法分析耦合记忆阻尼的随机Rayleigh振子... 详细信息

提出引致联合噪声驱动下耦合记忆阻尼Rayleigh振子族的单节律性(monorhythmicity)、双节律性(birhythmicity)及三节律性(trirhythmicity)振态模式过渡的参数设计方案.应用多尺度扩展、随机平均等方法分析耦合记忆阻尼的随机Rayleigh振子族(8阶、6阶及4阶变体)的振荡响应,利用振幅、联合相态及其投影与截面概率密度以及最可能振幅及其反解的参数关系等多元化方式定性评价并定量测算振子族的过渡行为,初步辨识Rayleigh阻尼变体系数、记忆阻尼重要参数引致节律模式过渡行为的数量关系.注意到8阶Rayleigh阻尼振子振态出现三节律性模式,获得优化的记忆阻尼模型的振态反馈因子、广义弹性模量与Rayleigh阻尼变体系数及随机载荷参数联合有效控制不稳定振态的样本方案.同步采用Runge-Kutta数值技术展示该随机Rayleigh振子族的相态时空演化序列,可观察到间歇现象,进一步揭示吸引子变化规律.模拟振态概率密度以说明解析方法的可靠性,并得到联合噪声对振子的影响机制.基于振态概率密度集成Shannon熵,分别关于Rayleigh变体系数、记忆阻尼重要参数、随机载荷参数测算Shannon熵、熵变化率及熵-熵变化率联合指标,发现这些熵指标(尤其熵变化率及关联指标)值发生显著变化时可以指示振子族过渡行为的临界态,同时不再局限于单点估测而提供引致节律模式过渡的参数的参考设计范围.文章的探索方法及路径为相关工程交叉应用场景的振动控制及所需的振态模式设计发展了新的改进思路.

关键词： Rayleigh振子族记忆阻尼联合噪声节律模式过渡 Shannon熵

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Vegetation and Community Changes of Elm (Ulmus pumila) Woodlands in Northeastern China in 1983-2011

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Chinese Geographical Science 2013年第3期23卷 321-330页

作者： LIU Li wang He LIN Changcun wang deli Institute of Grassland Science Key Laboratory of Vegetation Ecology Northeast Normal University College of Land and Environment Shenyang Agricultural University Liaoning Academy of Environmental Sciences

Elm （Ulmus pumila）, widely distributed in the north temperate zone, contributes to a special savanna-like woodland in typical grassland region in the northeastern China. This woodland performs a variety of ecological functions and environmental signifi- cance, such as decreasing soil erosion, stabilizing sand dunes, preserving species diversity. However, in the last approximate 30 years, the species composition, productivity and distribution area of elm woodland has decreased severely. A series of studies have been carried out to find out whether the climate changes or human disturbances caused the degradation of elm woodland and how these factors af- fected elm woodland. In this study, undisturbed, plowing and grazing elm woodland were investigated in 1983 and 2011 by using Point-Centered Quarter method. The relationship between vegetation changes and environmental factors was analyzed by Bray-Curtis ordination. The results show that in 2011, species diversity and understory productivity of undisturbed elm woodland decrease slightly compared to those of undisturbed elm woodland in 1983. However, nearly 60% of the species is lost in the plowing and grazing elm woodland relative to the species undisturbed elm woodland in 1983. Interestingly, plowing stimulates the growth of elm and certain understory species through furrowing soil and accelerating soil nutrient turnover rate. Grazing disturbance not only leads to species loss and productivity decrease, but also induces changes in elm growth （small, short and twisted）. The mean age of the elm was 29 -4- 2 yr in undisturbed and plowing elm woodland, while only 15 yr in the grazing elm woodland. The results of Bray-Curtis ordination analysis show that all sample stands clustered to three groups： Group I including the undisturbed sample stands of 83UE （undisturbed elm wood- land in 1983） and l lUE （undisturbed elm woodland in 2011）; Group II including sample stands of PE （elm woodland disturbed by plowing）; Group III inc

关键词： Elm (Ulmus pumila) woodland species diversity plant distribution Bray-Curtis ordination

巨噬细胞介导的骨免疫在股骨头坏死中的作用及其机制研究

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中国修复重建外科杂志 2024年第1期38卷 119-124页

作者：王雨顺郑鉴锐罗玉鸿陈雷彭志港叶根森王德利谭振北京大学深圳医院骨关节科广东深圳518000 深圳大学医学部广东深圳518000

目的总结巨噬细胞介导的骨免疫在股骨头坏死(osteonecrosis of the femoral head,ONFH)中的作用及其机制研究进展。方法广泛查阅近年国内外有关巨噬细胞介导的骨免疫在ONFH中的作用及其机制的研究,归纳巨噬细胞分类和功能,总结其对ONFH... 详细信息

目的总结巨噬细胞介导的骨免疫在股骨头坏死(osteonecrosis of the femoral head,ONFH)中的作用及其机制研究进展。方法广泛查阅近年国内外有关巨噬细胞介导的骨免疫在ONFH中的作用及其机制的研究,归纳巨噬细胞分类和功能,总结其对ONFH中慢性炎症的骨免疫调控作用,从骨免疫学层面阐述骨坏死病理生理机制,为ONFH治疗提供新思路。结果巨噬细胞是参与炎症反应的重要免疫细胞,可分化为经典活化型(M1型)和选择活化型(M2型),发挥特定功能参与并调节机体的生理病理过程。研究表明,巨噬细胞介导的骨免疫失衡会引起局部慢性炎症并导致ONFH进展。因此,调控巨噬细胞极化是潜在的ONFH治疗策略,包括在慢性炎症免疫微环境中,抑制巨噬细胞向M1型极化可促进局部炎症消退,有效延缓ONFH进展;调控巨噬细胞向M2型极化,构建局部利于骨修复的骨免疫微环境,在一定程度上利于坏死组织再生修复。结论目前研究已明确巨噬细胞介导慢性炎症免疫微环境是ONFH进展的重要机制,后续需要对ONFH中各种免疫细胞的亚型、各种免疫细胞之间以及各种免疫细胞与巨噬细胞之间的相互作用进行研究,有利于开发ONFH潜在治疗手段。

关键词：股骨头坏死巨噬细胞骨免疫慢性炎症

Stationary response of stochastic viscoelastic system with the right unilateral nonzero offset barrier impacts

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Chinese Physics B 2019年第1期28卷 195-204页

作者： deli wang Wei Xu Xudong Gu Department of Applied Mathematics Northwestern Polytechnical UniversityXi’an 710072China Department of Engineering Mechanics Northwestern Polytechnical UniversityXi’an 710072China

The stationary response of viscoelastic dynamical system with the right unilateral nonzero offset barrier impacts subjected to stochastic excitations is investigated. First, the viscoelastic force is approximately treated as equivalent terms associated with effects. Then, the free vibro-impact(VI) system is absorbed to describe the periodic motion without impacts and quasi-periodic motion with impacts based upon the level of system energy. The stochastic averaging of energy envelope(SAEE) is adopted to seek the stationary probability density functions(PDFs). The detailed theoretical results for Van der Pol viscoelastic VI system with the right unilateral nonzero offset barrier are solved to demonstrate the important effects of the viscoelastic damping and nonzero rigid barrier impacts condition. Monte Carlo(MC) simulation is also performed to verify the reliability of the suggested approach. The stochastic P-bifurcation caused by certain system parameters is further explored. The variation of elastic modulus from negative to zero and then to positive witnesses the evolution process of stochastic P-bifurcation. From the vicinity of the common value to a wider range, the relaxation time induces the stochastic P-bifurcation in the two interval schemes.

关键词： viscoelastic system right unilateral nonzero offset barrier impacts stochastic averaging of energy envelope(SAEE) stochastic P-bifurcation