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Anion Defects Engineering of Ternary Nb-Based Chalcogenide Anodes Toward High-Performance Sodium-Based Dual-Ion Batteries

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Nano-Micro Letters 2023年第7期15卷 218-232页

作者： yangjie liu Min Qiu Xiang Hu Jun Yuan Weilu Liao Liangmei Sheng Yuhua Chen Yongmin Wu Hongbing Zhan Zhenhai Wen College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108People’s Republic of China CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Materials and Techniques Toward Hydrogen EnergyFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian 350002People’s Republic of China Fujian Normal University Fuzhou 350108People’s Republic of China State Key Laboratory of Space Power-Sources Technology Shanghai Institute of Space Power Sources2965 Dongchuan RoadShanghai 200245People’s Republic of China

Sodium-based dual-ion batteries(SDIBs) have gained tremendous attention due to their virtues of high operating voltage and low cost, yet it remains a tough challenge for the development of ideal anode material of SDIBs featuring with high kinetics and long durability. Herein, we report the design and fabrication of N-doped carbon film-modified niobium sulfur–selenium(NbSSe/NC) nanosheets architecture, which holds favorable merits for Na^(+) storage of enlarged interlayer space, improved electrical conductivity, as well as enhanced reaction reversibility, endowing it with high capacity, high-rate capability and high cycling stability. The combined electrochemical studies with density functional theory calculation reveal that the enriched defects in such nanosheets architecture can benefit for facilitating charge transfer and Na+ adsorption to speed the electrochemical kinetics. The NbSSe/NC composites are studied as the anode of a full SDIBs by pairing the expanded graphite as cathode, which shows an impressively cyclic durability with negligible capacity attenuation over 1000 cycles at 0.5 A g^(-1), as well as an outstanding energy density of 230.6 Wh kg^(-1) based on the total mass of anode and cathode.

关键词： NbSSe Sodium-based dual-ion battery Anode Nanosheets architecture Anion defects engineering

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A General Self-Sacrifice Template Strategy to 3D Heteroatom-Doped Macroporous Carbon for High-Performance Potassium-Ion Hybrid Capacitors

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Nano-Micro Letters 2021年第9期13卷 1-15页

作者： Junwei Li Xiang Hu Guobao Zhong yangjie liu Yaxin Ji Junxiang Chen Zhenhai Wen CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research On the Structure of MatterChinese Academy of SciencesFuzhouFujian 350002People’s Republic of China

Potassium-ion hybrid capacitors(PIHCs)tactfully combining capacitor-type cathode with battery-type anode have recently attracted increasing attentions due to their advantages of decent energy density,high power density,and low cost;the mismatches of capacity and kinetics between capacitor-type cathode and battery-type anode in PIHCs yet hinder their overall performance output.Herein,based on prediction of density functional theory calculations,we find Se/N co-doped porous carbon is a promising candidate for K+storage and thus develop a simple and universal self-sacrifice template method to fabricate Se and N co-doped three-dimensional(3D)macroporous carbon(Se/N-3DMpC),which features favorable properties of connective hier-archical pores,expanded interlayer structure,and rich activity site for boosting pseudocapacitive activity and kinetics toward K^(+)storage anode and enhancing capacitance performance for the reversible anion adsorption/desorption cath-ode.As expected,the as-assembled PIHCs full cell with a working voltage as high as 4.0 V delivers a high energy density of 186 Wh kg^(−1) and a power output of 8100 W kg^(−1) as well as excellent long service life.The proof-of-concept PIHCs with excellent performance open a new avenue for the development and application of high-performance hybrid capacitors.

关键词： Potassium-ion hybrid capacitors Self-sacrifice template Se/N co-doped 3D macroporous Long service life

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Study on the Mechanical Properties of Ni-Ti-Cu Shape Memory Alloy Considering Different Cu Contents

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Computer Modeling in Engineering & Sciences 2022年第6期131卷 1601-1613页

作者： Bingfei liu yangjie Hao Transportation Science and Engineering College Civil Aviation University of ChinaTianjin300300China Aeronautical Engineering College Civil Aviation University of ChinaTianjin300300China

By adding copper to increase the performance,the Ni-Ti-Cu Shape Memory Alloy(SMA),has been widely used in the field of engineering in recent years.A thermodynamic constitutive model for Ni-Ti-Cu SMA considering different copper contents is established in this work.Numerical results for two different copper contents,as examples,are compared with the experimental results to verify the accuracy of the theoretical work.Based on the verified constitutive model,the effects of different copper content on the mechanical properties of Ni-Ti-Cu SMA and the tensile and compressive asymmetric properties of Ni-Ti-Cu SMA are finally discussed,respectively.

关键词： Shape memory alloy copper contents constitutive model tension and compression asymmetric

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316L网络结构增强ZA8锌合金复合材料的切屑形貌研究

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工具技术 2024年第6期58卷 35-40页

作者：刘阳杰姚碧波黎振华叶荣瑜昆明理工大学机电工程学院昆明理工大学材料科学与工程学院

为了探究网络结构增强复合材料的切屑形貌以明确其切削加工机理,对316L网络结构增强ZA8锌合金复合材料和ZA8锌合金进行了切削试验及切削模拟仿真,分析了两者切屑形貌的异同,并着重探讨了复合材料在不同切削三要素下和不同增强体孔径下... 详细信息

为了探究网络结构增强复合材料的切屑形貌以明确其切削加工机理,对316L网络结构增强ZA8锌合金复合材料和ZA8锌合金进行了切削试验及切削模拟仿真,分析了两者切屑形貌的异同,并着重探讨了复合材料在不同切削三要素下和不同增强体孔径下的切屑形貌变化。结果表明:复合材料的切屑长度和结构完整性显著低于ZA8,试验结果与模拟仿真结果类似,同时随着切削速度和背吃刀量增大,复合材料切屑更容易出现条纹状碎裂和崩碎现象,进给速度对材料的影响则相反。此外,复合材料增强体孔径越小,切屑长度越短,碎裂缺陷越多。

关键词：网络结构增强复合材料 ZA8锌合金切屑形貌切削加工机理

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Synthesis of the superfine high-entropy zirconate nanopowders by polymerized complex method

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Journal of Advanced Ceramics 2022年第1期11卷 136-144页

作者： yangjie HAN Renwang YU Honghua liu Yanhui CHU School of Materials Science and Engineering South China University of TechnologyGuangzhou 510641China

The high-purity and superfine high-entropy zirconate nanopowders,namely(Y_(0.25)La_(0.25)Sm_(0.25)Eu_(0.25))_(2)Zr_(2)O_(7)nanopowders,without agglomeration,were successfully synthesized via polymerized complex method at low temperatures for the first time.The results showed that the crystallinity degree,lattice strain,and particle size of the as-synthesized powders were gradually enhanced with the increase of the synthesis temperature from 800 to 1300℃.The as-synthesized powders involved fluorite phase in the range of 800-1200℃while they underwent the phase evolution from fluorite to pyrochlore at 1300℃.It is worth mentioning that the as-synthesized powders at 900℃are of the highest quality among all the as-synthesized powders,which is due to the fact that they not only possess the particle size of 11 nm without agglomeration,but also show high purity and good compositional uniformity.

关键词： high-entropy oxides zirconates nanopowders polymerized complex method

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Bolt insertion damage and mechanical behaviors investigation of CFRP/CFRP interference fit bolted joints

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Chinese Journal of Aeronautics 2022年第9期35卷 354-365页

作者： yangjie ZUO Ting YUE Ruisong JIANG Zengqiang CAO liu YANG School of Aeronautics and Astronautics Sichuan UniversityChengdu 610065China Xi’an Space Engine Co.Ltd Xi'an 710100China School of Mechanical Engineering Northwestern Polytechnical UniversityXi'an 710072China Xi’an ASN Technology Group Co.Ltd Xi'an 710072China

Interference fit has advantages in improving fatigue behaviors of composite bolted joints,however, interference fit bolt insertion tends to cause damages in laminates weakening joint mechanical properties. Therefore, an experimental study was conducted to investigate bolt insertion damages of Carbon Fiber Reinforced Polymer(CFRP)/CFRP interference fit bolted joints.Mechanical behaviors of joints were also evaluated experimentally under both quasi-static loads and cyclic loads. Scanning Electron Microscope(SEM) and high-resolution X-ray micro-CT scan were used to examine micro damages in laminates. Damage and failure behaviors of joints were characterized. The results demonstrated that the hole entrance in upper laminate and the laminate boundary near the hole wall were the most critical regions for damages during bolt insertions. However, the influence of those damages on quasi-static failure loads and fatigue failure modes of joints was minimal. Delamination and matrix cracking occurred first in laminates following fiber and matrix fracture in quasi-static tensile tests. Interference fit could improve the fatigue resistance of the laminate hole, however, the bolt seemed to suffer a more critical local fatigue loading condition.This paper can contribute to composite structure designs, especially in understanding damage and failure behaviors of composite bolted joints.

关键词： Bolted joints Composite Damage Failure Fatigue life Interference fit

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CeO_(2)quantum-dots engineering 3D carbon architectures toward dendrite-free Na anode and reversible Te cathode for high-performance Na-Te batteries

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InfoMat 2022年第10期4卷 90-101页

作者： yangjie liu Junwei Li Xiang Hu Jun Yuan Guobao Zhong Lu Zhang Junxiang Chen Hongbing Zhan Zhenhai Wen CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujianChina College of Materials Science and Engineering Fuzhou UniversityFuzhouChina Department of Chemical Engineering KU LeuvenHeverleeBelgium

Sodium-tellurium(Na-Te)battery,thanks to high theoretical capacity and abundant sodium source,has been envisaged as one promising battery technology,its practical application yet faces daunting challenges regarding how to mitigate the critical issues of uncontrollable dendrites growth at Na anode and polytellurides shuttling effect at Te cathode.We here report an elaborative design for fabrication of microsphere skeleton nanohybrids with three-dimensional(3D)hierarchical porous carbon loading CeO_(2)quantum dots(CeO_(2)-QDs/HPC),which feature highly favorable properties of sodiophilic and catalysis for hosting sodium and tellurium,respectively.The systematic investigations coupling with first-principle calculations demonstrate the CeO_(2)-QDs/HPC not only offers favorable structure and abundant electrocatalytic sites for facilitating interconversion between Te and NaxTe as a cathode host,but also can function as dendrite inhibitor anode host for reversible sodium electro-plating/deposition.Such Na-Te battery exhibits admiring electrochemical performance with an impressive specific capacity of 392 mAh g1,a long cycling stability over 1000 cycles,as well as remarkably high energy density of 192 Wh kg1 based on the total mass of anode and cathode.Such proof-of-concept bifunctional host design for active electrode materials can render a new insight and direction to the development of high-performance Na-Te batteries.

关键词： CeO_(2)quantum dots dual-functional hosts hierarchical porous carbon microsphere skeleton nanohybrids Na-Te batteries

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模拟直升机低频振动致大鼠腰痛模型的建立与鉴定

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陆军军医大学学报 2024年第1期46卷 58-65页

作者：刘红珍徐洋杰赵秦齐光辉王海燕李森刘媛谭波涛殷樱杨策重庆医科大学附属第二医院康复医学科重庆400010 73159部队91分队福建泉州362100 陆军军医大学(第三军医大学)大坪医院特殊环境战伤防治研究室创伤与化学中毒全国重点实验室重庆400042

目的通过模拟直升机低频振动建立急性腰痛(acute low back pain,ALBP)模型,探讨陆军飞行人员急性腰痛的成因,为其发生机制和防护提供可靠的动物模型与评估手段。方法选取48只8周龄雄性SD大鼠[体质量(200±20)g],采用随机数字表法分为造... 详细信息

目的通过模拟直升机低频振动建立急性腰痛(acute low back pain,ALBP)模型,探讨陆军飞行人员急性腰痛的成因,为其发生机制和防护提供可靠的动物模型与评估手段。方法选取48只8周龄雄性SD大鼠[体质量(200±20)g],采用随机数字表法分为造模A(振动1 h)、B(振动3 h)、C(振动6 h)组和D(空白对照)组,每组12只。连续5 d将大鼠分别暴露于10 Hz的六自由度振动台1、3和6 h。在造模前和造模后第1、4、7和14天行von Frey测试、旷场实验、转棒疲劳实验、步态分析、24 h摄食量等行为学检测;光学显微镜观察多裂肌组织学变化。结果行为学结果显示,持续性低频振动暴露大鼠缩足反射阈值降低(P<0.01)、24 h摄食量减少(P<0.01)、直立次数减少(P<0.05)、转棒跌落速度降低(P<0.05)、支撑时比较缩短(P<0.05)、足印面积减小(P<0.05)、步行速度降低(P<0.05)。多裂肌组织学显示细胞水肿,肌细胞形态紊乱且大小不一,排列不均,肌间隙细胞核增多,伴有大量炎性细胞浸润、聚集。结论持续低频振动环境暴露会导致大鼠腰痛相关行为学和腰部多裂肌组织学病变。

关键词：低频振动急性腰痛动物模型疼痛相关行为学多裂肌

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WiCare:一种非接触式的老人如厕跌倒监测模型

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计算机科学 2024年第S1期51卷 751-758页

作者：段鹏松刁宪广张大龙曹仰杰刘广怡孔金生郑州大学网络空间安全学院郑州450002 解放军战略支援部队信息大学郑州450001

老人在卫生间内的跌倒行为存在因救助及时性差而导致严重危害的风险,因此高效快捷的如厕跌倒监测研究具有重要意义。针对当前基于Wi-Fi感知的跌倒监测方法中存在的受噪声影响大而特征提取不充分、监测精度有限的问题,提出了一种基于多... 详细信息

老人在卫生间内的跌倒行为存在因救助及时性差而导致严重危害的风险,因此高效快捷的如厕跌倒监测研究具有重要意义。针对当前基于Wi-Fi感知的跌倒监测方法中存在的受噪声影响大而特征提取不充分、监测精度有限的问题,提出了一种基于多级离散小波变换和软阈值处理的信号降噪算法,及一种融合卷积神经网络、双向长短期记忆网络及自注意力机制的非接触式如厕跌倒监测模型WiCare。首先,从原始CSI数据中提取振幅作为基础数据;其次,使用多级离散小波变换和软阈值处理进行感知数据降噪;然后,将感知数据进行多维重构,以更准确地表征跌倒行为特征;最后,利用WiCare提取感知数据中的有效特征,进而实现卫生间如厕跌倒行为监测功能。实验结果表明,WiCare在居家卫生间环境下对跌倒行为监测的准确率为99.41%,与其他同类模型相比,WiCare的识别准确率高,模型复杂度低,且泛化能力更强。

关键词： Wi-Fi感知如厕跌倒监测离散小波变换软阈值处理深度学习

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精细缝合配合局部皮瓣在面部皮肤肿物切除修复中的应用

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中国现代手术学杂志 2024年第2期28卷 128-133页

作者：张领军薛涵刘明薛仰杰亳州市人民医院烧伤整形科安徽亳州236800

目的探讨精细缝合配合局部皮瓣修复面部皮肤肿物切除术后创面的临床效果。方法选择2019年3月至2021年4月在我院行面部皮肤肿物切除术的86例患者,按随机数字表法分为观察组(43例)与对照组(43例),行面部皮肤肿物切除术后,观察组采取精细缝... 详细信息

目的探讨精细缝合配合局部皮瓣修复面部皮肤肿物切除术后创面的临床效果。方法选择2019年3月至2021年4月在我院行面部皮肤肿物切除术的86例患者,按随机数字表法分为观察组(43例)与对照组(43例),行面部皮肤肿物切除术后,观察组采取精细缝合+局部皮瓣修复创面,对照组采用传统缝合+局部皮瓣修复。比较两组围术期指标、术后瘢痕形成情况、术后并发症及患者满意度。结果观察组术后水肿时间、切口愈合时间及拆线时间均明显少于对照组,术后3月瘢痕宽度、最薄处厚度均小于对照组,术后12月瘢痕评分低于对照组,患者总满意率明显高于对照组,差异均有统计学意义(P0.05)。结论采用精细缝合配合局部皮瓣修复面部皮肤肿物切除后创面,可明显减轻术后瘢痕形成,促进切口愈合,降低手术风险,提高患者满意度。

关键词：面部皮肤肿物精细缝合局部皮瓣修复

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