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Nano Research 2020年第1期13卷 72-78页

作者： Wenbin You Ke Pei Liting Yang Xiao Li Xiaofeng Shi Xuefeng Yu huiqiao guo Renchao Che Laboratory of Advanced Materials Department of Materials Science and CollaborativeInnovation Center of Chemistry for Energy Materials(iChem)Fudan University220 Handan RoadShanghai200433China

Faster response benefits the high-performance of magnetic material in various live ***,enhancing response speed toward the applied field via engineering advantages in structures is highly *** this paper,the precise synthesis of Co nanochain with the tunable length-diameter ratio is realized via a magnetic-field-guided assembly *** Co nanochain exhibits enhanced microwave absorption performance(near to-60 dB,layer thickness 2.2 mm)and broader effective absorption bandwidth(over 2/3 of total S,C,X,Ku bands).Furthermore,the simulated dynamic magnetic response reveals that the domain motion in 1D chain is faster than that in 0D nanoparticle,which is the determining factor of magnetic loss ***,based on the controllable magnetic field experiment via in situ transmission electron microscopy,the association between magnetic response and microstructure is first present at the *** real and imaginary parts of relative complex permeability are determined by the domain migration confined inside Co nanochain and the magnetic flux field surrounded outside Co nanochain,***,these findings can be extended to the novel design of microwave absorbers and promising candidates of magnetic carriers based on 1D structure.

关键词： microwave absorption in situ transmission electron microscopy(TEM) magnetic materials cobalt nanochain dynamic response

Surface engineering of P2-type cathode material targeting long-cycling and high-rate sodium-ion batteries

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Journal of Energy Chemistry 2024年第10期97卷 444-452,I0009页

作者： Jun Xiao Yang Xiao Shijian Wang Zefu Huang Jiayi Li Cheng Gong Guilai Zhang Bing Sun Hong Gao huiqiao Li Xin guo Yong Wang Hao Liu guoxiu Wang Centre for Clean Energy Technology School of Mathematical and Physical SciencesFaculty of ScienceUniversity of Technology SydneyBroadwaySydneyNew South Wales 2007Australia Joint International Laboratory on Environmental and Energy Frontier Materials School of Environmental and Chemical EngineeringShanghai UniversityShanghai 200444China State Key Laboratory of Materials Processing and Die and Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina

The widespread interest in layered P2-type Mn-based cathode materials for sodium-ion batteries(SIBs)stems from their cost-effectiveness and abundant ***,the inferior cycle stability and mediocre rate performance impede their further development in practical ***,we devised a wet chemical precipitation method to deposit an amorphous aluminum phosphate(AlPO_(4),denoted as AP)protective layer onto the surface of P2-type Na_(0.55)Ni_(0.1)Co_(0.7)Mn_(0.8)O_(2)(NCM@AP).The resulting NCM@5AP electrode,with a 5 wt%coating,exhibits extended cycle life(capacity retention of78.4%after 200 cycles at 100 mA g^(-1))and superior rate performance(98 mA h g^(-1)at 500 mA g^(-1))compared to pristine ***,our investigation provides comprehensive insights into the phase stability and active Na^(+)ion kinetics in the NCM@5AP composite electrode,shedding light on the underlying mechanisms responsible for the enhanced performance observed in the coated electrode.

关键词： Layered metal oxides Sodium-ion batteries P2-type structure Surface engineering

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高校基本建设项目工程造价指标库研究

建筑经济 2024年第6期45卷 94-99页

作者：郭艳利侯会乔北京邮电大学审计处北京100876

随着高校基本建设项目数量和规模的不断增加,工程造价管理面临诸多风险因素,高校工程审计对提高建设资金使用效益、改善内部工程管理水平、推动高校完善治理至关重要。本文以学生公寓、食堂、教学楼等项目竣工结算审计成果为基础,系统... 详细信息

随着高校基本建设项目数量和规模的不断增加,工程造价管理面临诸多风险因素,高校工程审计对提高建设资金使用效益、改善内部工程管理水平、推动高校完善治理至关重要。本文以学生公寓、食堂、教学楼等项目竣工结算审计成果为基础,系统构建由工程造价综合指标、单项工程造价指标、材料设备价格库、工程造价统计分析指标组成的指标库;基于构建的工程造价指标库,横向对比同类型项目数据,计算算术平均值、标准差及变异度,探索指标库的实践应用和方向路径,为后续项目科学决策、规范管理、控制造价提供参考依据。

关键词：高校基建项目工程审计造价指标

中药熏蒸联合雷火灸促进膝关节周围骨折术后功能恢复疗效观察

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现代中西医结合杂志 2019年第1期28卷 23-26页

作者：田会郭慧巧曹云丽周婷赵振英河北省石家庄市第一医院河北石家庄050011 河北省儿童医院河北石家庄050031 河北省石家庄市第二医院河北石家庄050000

目的探讨中药熏蒸联合雷火灸对膝关节周围骨折患者术后膝关节功能恢复的影响。方法将60例膝关节周围骨折术后患者随机分为对照组与中医组,每组30例。对照组给予术后康复指导,进行早期主动功能锻炼。中医组在常规康复锻炼的基础上加用中... 详细信息

目的探讨中药熏蒸联合雷火灸对膝关节周围骨折患者术后膝关节功能恢复的影响。方法将60例膝关节周围骨折术后患者随机分为对照组与中医组,每组30例。对照组给予术后康复指导,进行早期主动功能锻炼。中医组在常规康复锻炼的基础上加用中药熏蒸和雷火灸治疗。分别于术后1周、3周和5周比较2组患者膝关节主动屈曲角度;在术后第5周和术后第12周比较2组膝关节功能评分;在术后第1周、术后第2周和术后第3周比较2组疼痛评分和C反应蛋白(CRP)含量。结果 2组术后第3周和术后第5周膝关节主动屈膝角度比较有显著性差异(P均<0. 05)。2组术后第5周膝关节功能评分比较有显著性差异(P <0. 05)。2组术后第2周和第3周疼痛评分比较有显著性差异(P <0. 05)。术后第3周中医组CRP含量显著低于对照组(P <0. 05)。结论膝关节周围骨折患者术后进行中药熏蒸联合雷火灸治疗,可以有效地减轻术后膝关节疼痛,改善膝关节屈膝角度,减轻肿胀和炎性反应,促进膝关节功能的恢复。

关键词：膝关节周围骨折康复锻炼 C反应蛋白中药熏蒸雷火灸

Seamlessly Merging the Capacity of P into Sb at Same Voltage with Maintained Superior Cycle Stability and Low-temperature Performance for Li-ion Batteries

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Energy & Environmental Materials 2023年第2期6卷 195-201页

作者： Yaqing Wei Jun He Jie Zhang Mingyang Ou Yanpeng guo Jiajun Chen Cheng Zeng Jia Xu Jiantao Han Tianyou Zhai huiqiao Li State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and Technology(HUST)Wuhan 430074China State Key Laboratory of Marine Resource Utilization in South China Sea Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti ResourcesCollege of Materials Science and EngineeringHainan UniversityHaikou 570228China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin 300071China

Among the alloying-type anodes,elemental Sb possesses the suitable yet safe plateau,simple lithiation pathway,small voltage polarization,high conductivity,and superior cycle ***,challenge is that its intrinsic capacity is rather low(660 mAh g^(-1)),<1/6 of ***,we propose a seamless integration strategy by merging the voltage and capacity of phosphorus and antimony into a solid solution ***,the enlistment of P is found greatly enlarge the capacity from 660 to 993 mAh g^(-1) for such Sb_(30)P_(30) solid solution,while maintaining a single and stable discharge plateau(~0.79 V)similar to elemental *** experimental characterizations including XPS,PDF,Raman,and EDS mapping reveal that in such a material the P and Sb atoms have interacted with each other to form a homogenous solid solution alloy,rather than a simple mixing of the two ***,the Sb_(30)P_(30) exhibits superior rate performances(807 mAh g^(-1) at 5000 mA g^(-1))and cyclability(821 mAh g^(-1) remained after 300 cycles).Furthermore,such Sb_(60-x)P_(x) alloys can even deliver 621 mAh g^(-1) at30℃,which can be served as the alternative anode materials for high-energy and low-temperature *** unique seamless integration strategy based on solid solution chemistry can be easily leveraged to manipulate the capacity of other electrode materials at similar voltage.

关键词： alloy anode antimony lithium-ion batteries low-temperature performance phosphorus

1T′-MoTe_(2)-Based On-Chip Electrocatalytic Microdevice:A Platform to Unravel Oxidation-Dependent Electrocatalysis

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CCS Chemistry 2019年第5期1卷 396-406页

作者： Hui You Zhiwen Zhuo Xiufang Lu Youwen Liu Yabin guo Wenbin Wang Huan Yang Xiaojun Wu huiqiao Li Tianyou Zhai State Key Laboratory of Material Processing and Die&Mould Technology and School of Materials Science and EngineeringWuhan National High Magnetic Field CenterHuazhong University of Science and TechnologyWuhanHubei 430074China CAS Key Laboratory of Materials for Energy Conversion and Department of Material Science and Engineering Hefei National Laboratory of Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefeiAnhui 230026China

Ultrathin transition metal dichalcogenides(TMDs)are of particular interest as low-cost alternatives to highly active electrocatalysts because of their high surface activation ***,their striking structural characterist... 详细信息

关键词： 1T′-MoTe_(2) on-chip electrocatalytic micro-device electron density modulator catalytic model hydrogen evolution reaction

Compact self-standing layered film assembled by V2O5·nH2O/CNTs 2D/1D composites for high volumetric capacitance flexible supercapacitors

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Science China Materials 2019年第7期62卷 936-946页

作者： Kai guo Yiju Li Chong Li Neng Yu huiqiao Li Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices School of Chemistry Biology and Materials Science East China University of Technology Nanchang 330013 China Department of Materials Science and Engineering College of Engineering Peking University Beijing 100871 China Wuhan National Laboratory for Optoelectronics School of Optics and Electronic Information Huazhong University of Science and Technology Wuhan 430074 China State Key Laboratory of Material Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China

Flexible supercapacitors (SCs) are attractive energy storage devices for wearable electronics, but their applications are hindered by their low volumetric energy densities. Two dimensional (2D) non-carbon nanomaterials are the most promising pseudocapacitive materials for high volumetric capacitance electrodes. However, they are poorly conductive and prone to self-stacking, which results in unsatisfactory electrochemical performance. In this work, large-scale V2O5·nH2O ultrathin nanosheets are synthesized by a facile and scalable method and transformed into layered and compact composite films with one-dimensional carbon nanotubes (CNTs). The self-standing films show an optimized volumetric capacitance of 521.0Fcm^-3 with only 10 wt% of CNTs, which is attributed to dramatically enhanced electrical conductivity beyond the electrical percolation threshold, high dispersion of pseudocapacitive V2O5·nH2O nanosheets, and high mass density of the films. All-solid-state flexible SCs made of V2O5·nH2O/CNTs films show a maximum energy density of 17.4WhL^-1.

关键词： flexible supercapacitors volum etric capacitance two - dimensional nanosheets vanadium pentoxide layered structure

On-site building of a Zn^(2+)-conductive interfacial layer via short-circuit energization for stable Zn anode

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Science Bulletin 2021年第6期66卷 545-552,M0003页

作者： Ping Xiao Lanlan Xue Yanpeng guo Lintong Hu Can Cui huiqiao Li Tianyou Zhai State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin 300071China

Aqueous zinc ion batteries(ZIBs)show great potential in large-scale energy storage systems for their advantages of high safety,low cost,high capacity,and environmental ***,the poor performance of Zn metal anode seriously hinders the application of ***,we use the zinc-ion intercalatable V_(2)O_(5)nH_(2)O(VO)as the interface modification material,for the first time,to on-site build a Zn^(2+)-conductive ZnxV_(2)O_(5)nH_(2)O(ZnVO)interfacial layer via the spontaneous short-circuit reaction between the pre-fabricated VO film and Zn metal *** with the bare Zn,the ZnVO-coated Zn anode exhibits better electrochemical performances with dendrite-free Zn deposits,lower polarization,higher coulombic efficiency over 99%after long cycles and 10 times higher cycle life,which is confirmed by constructing Zn symmetrical cell and Zn|ZnSO_(4)+Li_(2)SO_(4)|LiFePO_(4) full cell.

关键词： V_(2)O_(5) Interfacial layer On-site building Zn anode Zinc ion batteries

Acid promoted Ni/NiO monolithic electrode for overall water splitting in alkaline medium

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Science China Materials 2017年第10期60卷 918-928页

作者： Caicai Li Junxian HOU Zexing Wu Kai guo Dell Wang Tianyou Zhai huiqiao Li State Key Laboratory of Material Processing and Die ＆ Mould Technology School of Materials Science and Engineering School of Chemistry and Chemical Engineering Huazhong University of Science and Technology （HUST） Wuhan 430074 China Department of Composite Materials and Engineering College of Materials Science and Engineering Hebei University of Engineering Handan 056038 China

Exploring and designing bi-functional catalysts with earth-abundant elements that can work well for both hydrogen evolution reaction（HER） and oxygen evolution reaction（OER） in alkaline medium are of significance for producing clean fuel to relieve energy and environment ***,a novel Ni/NiO monolithic electrode was developed by a facile and cost-effective acid promoted activation of Ni *** the treatment,this obtained monolithic electrode with a layer of NiO on its surface demonstrates rough and sheet-like morphology,which not only possesses larger accessible surface area but also provides more reactive active sites. Compared with powder catalysts,this monolithic electrode can achieve intimate contact between the electrocatalyst and the current collector,which will alleviate the problem of pulverization and enable the stable function of the electrode. It can be served as an efficient bi-functional electrocatalyst with an overpotential of 160 mV for HER and 290 mV for OER to produce current densities of 10 mA cm^（-2） in the alkaline medium. And it maintains benign stability after 5,000 cycles,which rivals many recent reported noble-metal free catalysts in 1.0mol L^（-1） KOH solution. Attributed to the easy,scalable methodology and high catalytic efficiency,this work not only offers a promising monolithic catalyst but also inspires us to exploit other inexpensive,highly efficient and self-standing noble metalfree electrocatalysts for scale-up electrochemical water-splitting technology.

关键词： electrocatalysis bi-functional acid promoted activation Ni/NiO water splitting monolithic electrode

Fabrication of Neutron-photon Coupling Multi-group Cross-section Library Based on Monte Carlo Method for Discrete Ordinates Transport Code

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IMP & HIRFL Annual Report 2022年第1期 204-205页

作者： Wu Xiang Fang Peng Wang huiqiao Yang Yongwei Yang Lei guo Yuyao Lai Hanghui Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516000GuangdongChina

Radiation shielding calculation plays a critical role in ensuring the safety of nuclear *** the field of nuclear reactor shielding calculations,deterministic computing codes are commonly used due to their computational efficiency and capability to solve deep penetration ***,the accuracy of deterministic codes heav-ily relies on the precision of the multi-group cross sec-tion library^([1]).

关键词： deterministic nates Coupling