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Mechanistic insight into the synergy between nickel single atoms and nanoparticles on N-doped carbon for electroreduction of CO2

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Journal of Energy Chemistry 2025年第1期100卷 327-336页

作者： mingdong Sun Wenwen guan Cailing chen Chao Wu Xiaoling Liu Biao Meng Tao chen Yu Han Jun Wang Shibo Xi Yu Zhou State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University Advanced Membranes and Porous Materials Center Physical Sciences and Engineering Division King Abdullah University of Science and Technology Institute of Sustainability for Chemicals Energy and Environment A*STAR (Agency for Science Technology and Research) College of Materials Science and Engineering Sichuan University

The synergy of single atoms （SAs） and nanoparticles （NPs） has demonstrated great potential in promoting the electrocatalytic carbon dioxide reduction reaction （CO2RR）;however,the rationalization of the SAs/NPs proportion remains one challenge for the catalyst ***,a Ni2+-loaded porous poly（ionic liquids）(PIL) precursor synthesized through the free radical self-polymerization of the ionic liquid monomer,1-allyl-3-vinylimidazolium chloride,was pyrolyzed to prepare the Ni,N co-doped carbon materials,in which the proportion of Ni SAs and NPs could be facilely modulated by controlling the annealing *** catalyst Ni-NC-1000 with a moderate proportion of Ni SAs and NPs exhibited high efficiency in the electrocatalytic conversion of CO2into *** Ni K-edge X-ray absorption near-edge structure （XANES） spectra and theoretical calculations were conducted to gain insight into the synergy of Ni SAs and *** charge transfer from Ni NPs to the surrounding carbon layer and then to the Ni SAs resulted in the electron-enriched Ni SAs active *** the electroreduction of CO2,the coexistence of Ni SAs and NPs strengthened the CO2activation and the affinity towards the key intermediate of*COOH,lowering the free energy for the potential-determining*CO2→*COOH step,and therefore promoted the catalysis efficiency.

关键词： Single atom catalyst Synergy effect Carbon catalyst Electrocatalysis

围带及拉筋间隙装配的汽轮机末级长叶片的试验研究

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汽轮机技术 2011年第4期53卷 285-287页

作者：李庆关明臣高永新哈尔滨汽轮机厂有限责任公司哈尔滨150046

阐述了汽轮机末级长叶片围带及拉筋的设计方法,通过对叶片的有限元分析确定围带及拉筋间隙,同时通过试验来验证有限元分析结果的精确性,掌握该结构叶片的设计原理和分析方法,为开发该结构的新叶片提供理论依据,以便满足汽轮机安全、可... 详细信息

阐述了汽轮机末级长叶片围带及拉筋的设计方法,通过对叶片的有限元分析确定围带及拉筋间隙,同时通过试验来验证有限元分析结果的精确性,掌握该结构叶片的设计原理和分析方法,为开发该结构的新叶片提供理论依据,以便满足汽轮机安全、可靠、高效运行要求。

关键词：汽轮机末级长叶片围带拉筋有限元分析

Dielectric-ion-conductive ZnNb2O6 layer enabling rapid desolvation and diffusion for dendrite-free Zn metal batteries

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Journal of Energy Chemistry 2025年第1期100卷 693-701页

作者： Haifeng Yang Jian Wang Panpan Zhang Xiaomin cheng Qinghua guan Jing Dong Bixian chen Lujie Jia Jing Zhang Yongzheng Zhang Yunjian Liu Hongzhen Lin School of Materials Science and Engineering Jiangsu University i-Lab & CAS Key Laboratory of Nanophotonic Materials and Devices Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Helmholtz Institute Ulm (HIU) Karlsruhe Institute of Technology (KIT) School of Materials Science and Engineering Xi'an University of Technology State Key Laboratory of Chemical Engineering East China University of Science and Technology

Rechargeable aqueous zinc-metal batteries （AZMBs） are promising candidates for large-scale energy storage systems due to their low cost and high ***,their performance and sustainability are significantly hindered by the sluggish desolvation kinetics at the electrode/electrolyte interface and the corresponding hydrogen evolution reaction where active water molecules tightly participate in the Zn（H2O）62+solvation ***,learnt from self-generated solid electrolyte interphase （SEI） in anodes,the dielectric but ion-conductive zinc niobate nanoparticles artificial layer is constructed on metallic Zn surface （ZNB@Zn）,acting as a rapid desolvation *** zincophilic and dielectric-conductive properties of ZNB layer accelerate interfacial desolvation/diffusion and suppress surface corrosion or dendrite formation,achieving uniform Zn plating/stripping behavior,as confirmed by electronic/optical microscopies and interface spectroscopical measurements together with theoretical ***,the as-prepared ZNB@Zn electrode exhibits excellent cycling stability of over 2000 h and robust reversibility （99.54%） even under high current density and depth of discharge ***,the assembled ZNB@Zn-based full cell displays high capacity-retention rate of 80.21%after 3000 cycles at 5 A g-1and outstanding rate performance up to 10 A *** large-areal pouch cell is stabilized for hundreds of cycles,highlighting the bright prospects of the dielectric but ion-conductive layer in further application of AZMBs.

关键词： Zn metal battery Dielectric artificial layer Rapid ion diffusion Zincophilic diffusion Active water inhibition

雌激素对绝经后动脉粥样硬化模型兔ET水平及内皮细胞ET-1 mRNA表达的影响

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复旦学报（医学版） 2002年第5期29卷 354-356页

作者：费震宇王文健关明陈伟华应健复旦大学中西医结合研究所上海200040

目的　观察雌激素对绝经后动脉粥样硬化模型兔动脉粥样硬化血浆内皮素 (ET)以及ET 1mRNA表达等的影响。方法　纯种新西兰雌兔去势术 +0 .5 %胆固醇饲料 +静注牛血清白蛋白造成绝经后动脉粥样硬化动物模型 ,模型动物连续使用雌激素 12周... 详细信息

目的　观察雌激素对绝经后动脉粥样硬化模型兔动脉粥样硬化血浆内皮素 (ET)以及ET 1mRNA表达等的影响。方法　纯种新西兰雌兔去势术 +0 .5 %胆固醇饲料 +静注牛血清白蛋白造成绝经后动脉粥样硬化动物模型 ,模型动物连续使用雌激素 12周后检测相关指标。结果　与模型组相比 ,雌激素能降低ET含量 (P <0 .0 5 ) ,并降低ET 1mRNA的表达 (P <0 .0 5 )。结论　雌激素能通过ET水平及ET 1mRNA表达的调控作用。

关键词：绝经动脉粥样硬化雌激素内皮素

Enhancement of motor functional recovery in thoracic spinal cord injury: voluntary wheel running versus forced treadmill exercise

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Neural Regeneration Research 2025年第3期20卷 836-844页

作者： Do-Hun Lee Dan Cao Younghye Moon chen chen Nai-Kui Liu Xiao-ming Xu Wei Wu Spinal Cord and Brain Injury Research Group Stark Neurosciences Research InstituteIndiana University School of MedicineIndianapolisINUSA Department of Neurological Surgery Indiana University School of MedicineIndianapolisINUSA Department of Neuroscience Baylor College of MedicineHoustonTXUSA

Spinal cord injury necessitates effective rehabilitation strategies, with exercise therapies showing promise in promoting recovery. This study investigated the impact of rehabilitation exercise on functional recovery and morphological changes following thoracic contusive spinal cord injury. After a 7-day recovery period after spinal cord injury, mice were assigned to either a trained group(10 weeks of voluntary running wheel or forced treadmill exercise) or an untrained group. Bi-weekly assessments revealed that the exercise-trained group, particularly the voluntary wheel exercise subgroup, displayed significantly improved locomotor recovery, more plasticity of dopaminergic and serotonin modulation compared with the untrained group. Additionally, exercise interventions led to gait pattern restoration and enhanced transcranial magnetic motor-evoked potentials. Despite consistent injury areas across groups, exercise training promoted terminal innervation of descending axons. In summary, voluntary wheel exercise shows promise for enhancing outcomes after thoracic contusive spinal cord injury, emphasizing the role of exercise modality in promoting recovery and morphological changes in spinal cord injuries. Our findings will influence future strategies for rehabilitation exercises, restoring functional movement after spinal cord injury.

关键词： behavioral assessment motor function neural plasticity running wheel exercise spinal cord injury treadmill exercise voluntary exercise

补肾方对去势高脂血症兔血脂及ox-LDLmRNA表达的作用

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复旦学报（医学版） 2003年第2期30卷 99-102页

作者：费震宇王文健关明陈伟华应健复旦大学中西医结合研究所上海200040

目的　观察补肾方药对去势高脂血症兔血脂、氧化低密度脂蛋白 (ox LDL)水平以及ox LDLmRNA表达的影响。方法　纯种新西兰雌兔去势术 +0 .5 %胆固醇饲料 +静注牛血清白蛋白造模 ,模型动物连续使用雌激素和补肾方药治疗 12周后检测相关指... 详细信息

目的　观察补肾方药对去势高脂血症兔血脂、氧化低密度脂蛋白 (ox LDL)水平以及ox LDLmRNA表达的影响。方法　纯种新西兰雌兔去势术 +0 .5 %胆固醇饲料 +静注牛血清白蛋白造模 ,模型动物连续使用雌激素和补肾方药治疗 12周后检测相关指标。结果　与模型组相比 ,补肾方药不但有较好的调脂作用 ,又能降低ox LDL含量 (P <0 .0 5 ) ,并降低ox LDLmRNA的表达 (P <0 .0 5 )。结论　补肾方可改善去势高脂血症模型兔血脂、ox LDL水平 ,减少ox LDLmRNA的表达 ,减少LDL的氧化修饰 ,进而保护内皮细胞功能。

关键词：高脂血症补肾方氧化低密度脂蛋白中医药疗法动物实验

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整圈连接叶片高温蠕变与松弛特性分析

汽轮机技术 2017年第5期59卷 326-328页

作者：马义良关明臣李宇峰哈尔滨汽轮机厂有限责任公司哈尔滨150046

随着汽轮机叶片进口参数越来越高,叶片对材料的高温力学性能提出了更高的要求,在高温下材料的力学特性远低于其在常温下的所承受的范围,在高温下材料会发生蠕变和应力松驰现象,应用"characteristic strain"蠕变模型来分析高温叶片的蠕... 详细信息

随着汽轮机叶片进口参数越来越高,叶片对材料的高温力学性能提出了更高的要求,在高温下材料的力学特性远低于其在常温下的所承受的范围,在高温下材料会发生蠕变和应力松驰现象,应用"characteristic strain"蠕变模型来分析高温叶片的蠕变和应力松弛行为,该蠕变模型是阿尔斯通叶片专家***将诺顿蠕变模型优化后得到的,该蠕变模型相比于诺顿蠕变模型大大提高了计算效率。本次高温叶片有限元蠕变计算,评估了叶片在高温下的安全性及机械设计完整性,良好地指导了叶片结构设计,且得到了高效、精确的高温蠕变计算方法。

关键词：叶片 “characteristic strain”蠕变模型:有限元

MoS_(2)Lubricate‑Toughened MXene/ANF Composites for Multifunctional Electromagnetic Interference Shielding

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Nano-Micro Letters 2025年第2期17卷 358-371页

作者： Jiaen Wang Wei ming Longfu chen Tianliang Song Moxi Yele Hao Zhang Long Yang Gegen Sarula Benliang Liang Luting Yan guangsheng Wang School of Physical Science and Engineering Beijing Jiaotong UniversityBeijing 100044People’s Republic of China Key Laboratory of Bio‑Inspired Smart Interfacial Science and Technology of Ministry of Education School of ChemistryBeihang UniversityBeijing 100191People’s Republic of China

The design and fabrication of high toughness electromagnetic interference(EMI)shielding composite films with diminished reflection are an imperative task to solve electromagnetic pollution *** MXene/ANF(aramid nanofibers)–MoS_(2)composite films with nacre-like layered structure here are fabricated after the introduction of MoS_(2)into binary MXene/ANF composite *** introduction of MoS_(2)fulfills an impressive“kill three birds with one stone”improvement effect:lubrication toughening mechanical performance,reduction in secondary reflection pollution of electromagnetic wave,and improvement in the performance of photothermal *** the introduction of MoS_(2)into binary MXene/ANF(mass ratio of 50:50),the strain to failure and tensile strength increase from 22.1±1.7%and 105.7±6.4 MPa and to 25.8±0.7%and 167.3±9.1 MPa,*** toughness elevates from 13.0±4.1 to 26.3±0.8 MJ m^(−3)(~102.3%)*** the reflection shielding effectiveness(SE_(R))of MXene/ANF(mass ratio of 50:50)decreases~10.8%.EMI shielding effectiveness(EMI SE)elevates to 41.0 dB(8.2–12.4 GHz);After the introduction of MoS_(2)into binary MXene/ANF(mass ratio of 60:40),the strain to failure increases from 18.3±1.9%to 28.1±0.7%(~53.5%),the SE_(R)decreases~22.2%,and the corresponding EMI SE is 43.9 *** MoS_(2)also leads to a more efficient photothermal conversion performance(~45 to~55℃).Additionally,MXene/ANF–MoS_(2)composite films exhibit excellent electric heating performance,quick temperature elevation(15 s),excellent cycle stability(2,2.5,and 3 V),and long-term stability(2520 s).Combining with excellent mechanical performance with high MXene content,electric heating performance,and photothermal conversion performance,EMI shielding ternary MXene/ANF–MoS_(2)composite films could be applied in many industrial *** work broadens how to achieve a balance between mechanical properties and versatility of composites in the case of high-function fillers.

关键词： MXene-MoS_(2) Lubrication toughening EMI shielding Photothermal conversion Electric heating performance

Unleashing the Potential of Electroactive Hybrid Biomaterials and Self‑Powered Systems for Bone Therapeutics

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Nano-Micro Letters 2025年第2期17卷 463-497页

作者： Shichang Liu Farid Manshaii Jinmiao chen Xinfei Wang Shaolei Wang Junyi Yin ming Yang Xuxu chen Xinhua Yin Yunlei Zhou Honghui Hospital Xi’an Jiaotong UniversityXi’an 710018People’s Republic of China Department of Bioengineering Henry Samueli School of Engineering and Applied ScienceUniversity of California Los AngelesLos Angeles 90095USA Hangzhou Institute of Technology Xidian UniversityHangzhou 311231People’s Republic of China

The incidence of large bone defects caused by traumatic injury is increasing worldwide,and the tissue regeneration process requires a long recovery time due to limited self-healing *** bioelectrical phenomena have been well recognized as critical biophysical factors in bone remodeling and *** by bioelectricity,electrical stimulation has been widely considered an external intervention to induce the osteogenic lineage of cells and enhance the synthesis of the extracellular matrix,thereby accelerating bone *** ongoing advances in biomaterials and energy-harvesting techniques,electroactive biomaterials and self-powered systems have been considered biomimetic approaches to ensure functional recovery by recapitulating the natural electrophysiological microenvironment of healthy bone *** this review,we first introduce the role of bioelectricity and the endogenous electric field in bone tissue and summarize different techniques to electrically stimulate cells and ***,we highlight the latest progress in exploring electroactive hybrid biomaterials as well as self-powered systems such as triboelectric and piezoelectric-based nanogenerators and photovoltaic cell-based devices and their implementation in bone tissue ***,we emphasize the significance of simulating the target tissue’s electrophysiological microenvironment and propose the opportunities and challenges faced by electroactive hybrid biomaterials and self-powered bioelectronics for bone repair strategies.

关键词： Electroactive biomaterials Self-powered bioelectronics Bone regeneration Bone tissue