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基于亚马逊智能助手评论的用户拟人化及满意度人格前因研究

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管理学报 2024年第2期21卷 298-307页

作者：曹翠翠赵玲张千帆李玉妮湖北经济学院信息管理学院湖北经济学院大数据与数字经济研究院华中科技大学管理学院武汉市430074

基于人格的层次影响框架,探究大五人格特征如何影响用户对智能助手的拟人化及满意度,并进一步分析拟人化在大五人格特征及用户满意度之间的中介作用。采集用户对亚马逊智能助手的评论数据,通过基于变换器的双向编码表征模型及袋装支持... 详细信息

基于人格的层次影响框架,探究大五人格特征如何影响用户对智能助手的拟人化及满意度,并进一步分析拟人化在大五人格特征及用户满意度之间的中介作用。采集用户对亚马逊智能助手的评论数据,通过基于变换器的双向编码表征模型及袋装支持向量机对大五人格特征进行测量,并进行实证分析。研究表明:尽责性显著负向影响用户对智能助手的拟人化,其余人格特征(开放性、外倾性、宜人性、神经质)均显著正向影响用户对智能助手的拟人化;神经质显著负向影响用户对智能助手的满意度,其余人格特征(开放性、尽责性、外倾性、宜人性)显著正向影响用户的满意度;拟人化在大五人格特征与满意度之间起部分中介作用。

关键词：个人智能助手拟人化大五人格用户满意度

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多级中空纳米纤维二次电池电极材料

科学通报 2024年第16期69卷 2157-2173页

作者：高松伟郭威牟粤朱柯平崔志民满兴坤张千帆王女赵勇北京航空航天大学化学学院仿生智能界面科学与技术教育部重点实验室仿生能源材料与器件北京市重点实验室北京100191 北京航空航天大学物理学院北京100191 北京航空航天大学材料科学与工程学院北京100191

多级中空纳米纤维材料具有结构可控、成分可调的优点,在二次电池电极材料领域应用广泛.在结构方面:多级中空结构可以有效缓冲电极材料在电化学反应离子嵌/脱过程中的体积变化,阻止电极材料粉碎、脱落,增加电解液和电极材料的有效接触面... 详细信息

多级中空纳米纤维材料具有结构可控、成分可调的优点,在二次电池电极材料领域应用广泛.在结构方面:多级中空结构可以有效缓冲电极材料在电化学反应离子嵌/脱过程中的体积变化,阻止电极材料粉碎、脱落,增加电解液和电极材料的有效接触面积,缩短离子/电子传输路径;在成分方面:可以实现不同特性材料的合理耦合,提升电极材料电导率,加速氧化还原反应动力学.多级中空纳米纤维结构和成分的协同增强作用在提升二次电池容量、倍率、循环性能方面效果显著.本文归纳了现阶段制备多级中空结构纳米纤维的几类方法,包括单针头静电纺丝、多流体静电纺丝和其他合成方法(模板法、水热法、自组装法等).随后,总结了不同结构、成分的纤维在二次电池(如锂、钠、钾离子电池,锂/钠-硫电池,锂金属-空气电池,超级电容器等)中的应用进展.最后,探讨了多级中空结构纳米纤维材料在电化学储能领域的应用潜力.

关键词：多级中空结构纳米纤维异质结构二次电池电极材料

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降低渗滤液中氰化物的试验研究

云南化工 2024年第7期51卷 64-66页

作者：钟琦张千帆李行德云南大地丰源环保有限公司云南昆明650401 云南大地绿坤环保科技有限公司云南昆明650401

云南省某危险废物处理中心填埋场所产生的渗滤液总氰化物最高为9.72 mg/L,pH值为6.23。为了使危废中心所产生的二次废物可低成本、高效率的处理后将氰化物降低至国家污水排放标准《GB8578-1996》,对化学沉淀法进行工艺研究。结果表明,30... 详细信息

云南省某危险废物处理中心填埋场所产生的渗滤液总氰化物最高为9.72 mg/L,pH值为6.23。为了使危废中心所产生的二次废物可低成本、高效率的处理后将氰化物降低至国家污水排放标准《GB8578-1996》,对化学沉淀法进行工艺研究。结果表明,300 g渗滤液中加入硫酸调节pH值为2~3,再加入硫酸亚铁1%和聚合硫酸铁0.33%,调节pH值在5~6,加入聚合氯化铝0.3%和少量0.1%的聚丙烯酰胺溶液做絮凝剂,可使渗滤液中氰化物降低至国家污水排放标准《GB5978-1996》中所规定的氰化物0.5 mg/L,氰化物去除率约为98.48%。

关键词：渗滤液氰化物铁盐沉淀法氧化法

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丙酰氯废液中和处置技术

云南化工 2024年第4期51卷 79-81页

作者：张千帆李行德任雪娇云南大地丰源环保科技有限公司云南昆明650401

为了降低酸度很高、腐蚀性很强的丙酰氯废液的处置难度,增加后端处置的安全和效率。先用去离子水稀释丙酰氯废液,而后采用质量分数为3%的NaOH溶液及Na_(2)CO_(3)、NaHCO_(3)共三种药剂进行中和反应,调节碱性药剂使用量,中和丙酰氯废液... 详细信息

为了降低酸度很高、腐蚀性很强的丙酰氯废液的处置难度,增加后端处置的安全和效率。先用去离子水稀释丙酰氯废液,而后采用质量分数为3%的NaOH溶液及Na_(2)CO_(3)、NaHCO_(3)共三种药剂进行中和反应,调节碱性药剂使用量,中和丙酰氯废液至中性。结合反应体系温度、pH、热值、酸雾产生情况和体系反应剧烈程度等多个指标,探究最优的中和药剂及反应条件。最优结果为:丙酰氯废液先稀释20倍,每1 g丙酰氯废液需使用2 g碳酸氢钠中和。废液中和后pH为7.0,反应体系有二氧化碳气体逸出,无温度变化,无酸雾产生,中和后废液热值为0。

关键词：丙酰氯废液中和反应稀释热值

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氢氟酸废液协同含铅飞灰无害化处理研究

云南化工 2024年第4期51卷 82-84页

作者：钟琦李行德张千帆任雪娇云南大地丰源环保有限公司云南昆明650401 云南大地绿坤环保科技有限公司云南昆明650401

为了使碱性含铅飞灰达到危险废物填埋限值,使用氢氟酸废液作为含铅飞灰的稳定化药剂,在探究出氢氟酸废液的最佳用量后,以石灰作为pH调节剂,水泥做固化剂,可使总铅、无机氟化物的浸出毒性低于《危险废物填埋污染控制标准》(GB19598-2019... 详细信息

为了使碱性含铅飞灰达到危险废物填埋限值,使用氢氟酸废液作为含铅飞灰的稳定化药剂,在探究出氢氟酸废液的最佳用量后,以石灰作为pH调节剂,水泥做固化剂,可使总铅、无机氟化物的浸出毒性低于《危险废物填埋污染控制标准》(GB19598-2019)要求。结果表明,氢氟酸废液的加入量为10%(质量分数),石灰的加入量为4%(质量分数)调节pH在7.10~7.15之间时稳定化效果显著,最优结果为pH=7.15,总铅质量浓度0.145 mg/L,无机氟化物质量浓度3.7 mg/L。

关键词：含铅飞灰氢氟酸石灰浸出毒性

Identifying Hidden Li–Si–O Phases for Lithium-Ion Batteries via First-Principle Thermodynamic Calculations

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Energy & Environmental Materials 2022年第3期5卷 865-871页

作者： Jiale Qu Chao Ning Xiang Feng Bonan Yao Bo Liu Ziheng Lu Tianshuai Wang Zhi Wei Seh Siqi Shi qianfan zhang School of Materials Science and Engineering Beihang UniversityBeijing 100191China College of Mathematics and Physics Jinggangshan UniversityJi’an 343009China Department of Materials Science&Metallurgy University of CambridgeCambridge CB30FSUK Institute of Materials Research and Engineering Agency for ScienceTechnology and Research(A^(*)STAR)Singapore 138634Singapore School of Materials Science and Engineering Shanghai UniversityShanghai 200444China

SiO–based materials are promising alloys and conversion-type anode materials for lithium-ion batteries and are recently found to be excellent dendrite-proof layers for lithium-metal ***,only a small fraction of the Li–Si–O compositional space has been reported,significantly impeding the understanding of the phase transition mechanisms and the rational design of these materials both as anodes and as protection layers for lithium-metal ***,we identify three new thermodynamically stable phases within the Li–Si–O ternary system(Li_(2)SiO_(5),Li_(4)SiO_(6),and Li_(4)SiO_(8))in addition to the existing records via first-principle *** electronic structure simulation shows that Li_(2)SiO_(5)and Li_(4)SiO_(8)phases are metallic in nature,ensuring high electronic conductivity required as *** calculations demonstrate that the mechanical strength of Li–Si–O phases is much higher than that of lithium *** diffusion barriers of interstitial Li range from 0.1 to 0.6 eV and the interstitial Li hopping serves as the dominating diffusion mechanism in the Li–Si–O ternary systems compared with vacancy *** findings provide a new strategy for future discovery of improved alloying anodes for lithium-ion batteries and offer important insight towards the understanding of the phase transformation mechanism of alloy-type protection layers on lithium-metal anodes.

关键词： anode material crystal structure prediction first-principle calculations ternary alloy phase

Pea-like MoS_(2)@NiS_(1.03)-carbon heterostructured hollow nanofibers for high-performance sodium storage

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Carbon Energy 2023年第4期5卷 42-54页

作者： Songwei Gao Yixiang He Guichu Yue Huaike Li Shuai Li Jingchong Liu Beibei Miao Jie Bai Zhimin Cui Nu Wang qianfan zhang Lei Jiang Yong Zhao Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education Beijing Key Laboratory of Bioinspired Energy Materials and DevicesSchool of ChemistryBeijing Advanced Innovation Center for Bio‐Medical EngineeringBeihang UniversityBeijingChina School of Materials Science and Engineering Beihang UniversityBeijingChina School of Chemistry and Biological Engineering University of Science and Technology BeijingBeijingChina Inner Mongolia Key Laboratory of Industrial Catalysis Chemical Engineering CollegeInner Mongolia University of TechnologyInner MongoliaHohhotChina Laboratory of Bio-inspired Smart Interface Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijingChina

The rational synergy of chemical composition and spatial nanostructures of electrode materials play important roles in high-performance energy storage ***,we designed pea-like MoS_(2)@NiS_(1.03)-carbon hollow nanofibers using a simple electrospinning and thermal treatment *** hierarchical hollow nanofiber is composed of a nitrogen-doped carbon-coated NiS_(1.03) tube wall,in which pea-like uniformly discrete MoS_(2) nanoparticles are *** a sodium-ion battery electrode material,the MoS_(2)@NiS_(1.03)-carbon hollow nanofibers have abundant diphasic heterointerfaces,a conductive network,and appropriate volume variation-buffering spaces,which can facilitate ion diffusion kinetics,shorten the diffusion path of electrons/ion,and buffer volume expansion during Na^(+)insertion/*** shows outstanding rate capacity and long-cycle performance in a sodium-ion *** heterogeneous hollow nanoarchitectures designing enlightens an efficacious strategy to boost the capacity and long-life stability of sodium storage performance of electrode materials.

关键词： density functional theory electrospinning heterostructure hollow nanofibers molybdenum disulfide sodium-ion batteries

Theoretical investigation of lithium ions’ nucleation performance on metal-doped Cu surfaces

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Journal of Energy Chemistry 2019年第12期28卷 160-169页

作者： Yanchen Fan Tianshuai Wang Dominik Legut qianfan zhang School of Materials Science and Engineering Beihang UniversityBeijing 100191China IT4Innovations Center VSB-Technical University of Ostrava17.listopadu 15CZ-70833 OstravaCzech Republic

Lithium metal batteries(LMBs)of an ultrahigh theoretical energy density have attracted lots of attentions for a wide range of practical ***,there are still numerous challenges in LMBs system,such as poor cycling performance,complicated interfacial reactions,low Coulombic efficiency,and uncontrollable lithium *** Li^+ions’nucleation mechanism is essential to tackle the uncontrolled growth of lithium ***,the nucleation behavior of Li+ions is interfered by the structural complexities of existing substrates during the reduplicative plating/stripping process and the rational mechanism of uniform nucleation of Li^+ions has not been clearly understood from the theoretical point of *** our work,first-principles theoretical calculations are carried out to investigate the Li^+ions nucleation performance on metal-doped Cu surfaces(MDCSs)and the key descriptors that determines the properties of various MDCSs are systematically *** is found that the introduction of heterogeneous doping Ag and Zn atoms will induce a gradient adsorption energy on MDCSs,and such gradient deposition sites can reduce the diffusion barriers and accelerate the diffusion rates of Li+ions *** maneuvering the Li+ions nucleation on MDCSs,a dendrite-free lithium metal anode can be achieved without the use of porous matrixes and complex synthesis process,which can be attributed to suppress the uncontrollable lithium dendrites for realizing the high-efficiency LMBs.

关键词： First-principles calculations Metal-doped Cu surfaces Lithium metal anode Nucleation mechanism Dendrite growth

Interface effect on promoting reversible conversion for Na2Se in the metal selenide as sodium ion batteries

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Journal of Energy Chemistry 2020年第5期29卷 8-12页

作者： Tianshuai Wang Jiewen Xiao Xiyu Cao Yanchen Fan qianfan zhang School of Materials Science and Engineering Beihang UniversityBeijing 100091China

The rapid development of modern electronic devices has promoted more research in the field of high energy-density storage devices[1].Lithium ion batteries(LIBs)have been widely used in electronic devices and hybrid el... 详细信息

关键词： Naion battery Graphene/Na2Se interface Reversible conversion reaction