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The discovery of cathode materials for lithium-ion batteries from the view of interdisciplinarity

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Interdisciplinary Materials 2022年第3期1卷 323-329页

作者： yunhui huang State Key Laboratory of Material Processing and Die&Mold Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhanHubeiChina

In honor of Professor John *** for his 100th birthday,this article tries to find the relationship between the discovery of cathode materials for lithium-ion batteries and the interdisciplinary research in his *** original ideas of lithium cobalt oxide,lithium manganese oxide,and LiFePO4 came from his early research in solid state physics and from his strong knowledge of chemical structure and *** examples are given to demonstrate the importance of interdisciplinary interactions among materials,chemistry,and *** the rapid development of rechargeable batteries,such interdisciplinarity is further extended to engineering,information,and even artificial *** there are still many challenges like energy density and safety in the batteries,we are confident that a better solution will be soon found.

关键词： cathode materials interdisciplinarity John B.Goodenough

Improved virtual synchronous control for grid-connected VSCs under grid voltage unbalanced conditions

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Journal of Modern Power Systems and Clean Energy 2019年第1期7卷 174-185页

作者： Lei SHANG Jiabing HU Xiaoming YUAN yunhui huang Huazhong University of Science and Technology Wuhan University of Technology

This paper presents an improved virtual synchronous control(VSynC) for the grid-connected voltage source converter(VSC) so as to continuously operate under the grid voltage with steady *** improved VSynC introduces the negative sequence power controls on basis of conventional *** improved VSynC is capable of regulating the negative sequence internal voltage to reduce the negative-sequence injected currents and oscillated powers of the VSC aroused by the negative-sequence grid *** alternative local control objectives for the VSC itself under steady state unbalanced grid conditions and their corresponding power references are deduced and *** and experimental results are presented to validate the correctness and effectiveness of the proposed improved VSynC to enhance the continuous operation performance of VSynC-based VSCs during grid voltage steady-state unbalance.

关键词： Grid voltage unbalance Virtual synchronous control(VSynC) Grid-connected voltage source converter(VSC)

Inhibiting Voltage Decay in Li-Rich Layered Oxide Cathode:From O3-Type to O2-Type Structural Design

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Nano-Micro Letters 2024年第12期16卷 81-102页

作者： Guohua Zhang Xiaohui Wen Yuheng Gao Renyuan Zhang yunhui huang Institute of New Energy for Vehicles Shanghai Key Laboratory for R&D and Application of Metallic Functional MaterialsSchool of Materials Science and EngineeringTongji UniversityShanghai 201804People’s Republic of China Contemporary Amperex Technology Co. LtdNingde 352100People’s Republic of China State Key Laboratory of Material Processing and Die and Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiPeople’s Republic of China

Li-rich layered oxide(LRLO)cathodes have been regarded as promising candidates for next-generation Li-ion batteries due to their exceptionally high energy density,which combines cationic and anionic redox ***,continuous voltage decay during cycling remains the primary obstacle for practical applications,which has yet to be fundamentally *** is widely acknowledged that voltage decay originates from the irreversible migration of transition metal ions,which usually further exacerbates structural evolution and aggravates the irreversible oxygen redox ***,constructing O2-type structure has been considered one of the most promising approaches for inhibiting voltage *** this review,the relationship between voltage decay and structural evolution is systematically *** to suppress voltage decay are systematically ***,the design of O2-type structure and the corresponding mechanism of suppressing voltage decay are comprehensively ***,the reported O2-type LRLO cathodes still exhibit partially disordered structure with extended ***,the factors that may cause the irreversible transition metal migrations in O2-type LRLO materials are also explored,while the perspectives and challenges for designing high-performance O2-type LRLO cathodes without voltage decay are proposed.

关键词： Lithium-ion batteries Li-rich layered oxide Voltage decay Migration of transition metal ions O2-type structural design

Spillover and crossover from work overload to spouse-rated work-to-family conflict:The moderating role of cross-role trait consistency

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Fundamental Research 2023年第6期3卷 997-1004页

作者： yunhui huang Yina Mao Yujie Zhan School of Business Nanjing UniversityNanjing 210093JiangsuChina Lazaridis School of Business and Economics Wilfrid Laurier University75 University Avenue WestWaterlooON N2L 3C5Canada

While most previous research in social psychology shows benefits of individuals’consistency in personality across different social roles,the current study brings the concept of cross-role trait consistency to the context of management and examines its dark *** from 197 couples showed that an employee’s work overload was positively associated with his/her spouse’s perception of how much the employee’s work interfered with family *** relationship was mediated by the employee’s job *** importantly,this mediating relationship was moderated by the employee’s cross-role trait *** findings indicate that work overload may affect spouses’perception of employees’work-to-family conflict through job burnout,with the transmission of burnout on work-to-family conflict stronger among employees high in cross-role trait ***,cross-role trait consistency appears to strengthen negative spillover and crossover from work to *** and practical implications are discussed.

关键词： Cross-role trait consistency Work overload Job burnout Work-to-family conflict Negative spillover and crossover

Construction and application of L929 cell model expressing human bcl-2 protein

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Chinese Science Bulletin 1999年第12期44卷 1095-1098页

作者： Fengtian He Xihua Zhu yunhui huang Third Mil Med Univ Dept Immunol Chongqing 400083 Peoples R China

Recombinant eucaryotic expression vector pLXSN/s-bcl-2 has been constructed by cloning human bcl-2 cDNA containing the full-length open reading frame into the vector pLXSN in sense orientation, and a mammalian cell model expressing human bcl-2 protein has been established by electroporating the recombinant vector into mouse L929 cells. bcl-2 expression in L929 cells has no effect on the cell growth and survival under normal culture conditions, but it can enhance the survival of the cell in the challenge of some apoptosis-inducing stimuli, including tumor necrosis factor α(TNF α) and staurosporine (STS).

关键词： bcl-2 cell model L929 cell line apoptosis.

Amino-modified UiO-66-NH_(2) reinforced polyurethane based polymer electrolytes for high-voltage solid-state lithium metal batteries

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Nano Research 2024年第11期17卷 9662-9670页

作者： Danru huang Lin Wu Qi Kang Zhiyong Shen Qiaosheng huang Wenjie Lin Fei Pei yunhui huang State Key Laboratory of Low-carbon Smart Coal-fired Power Generation and Ultra-clean Emission China Energy Science and Technology Research Institute Co. Ltd. Nanjing 210023 China State Key Laboratory of Materials Processing and Die and Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China Institute of New Energy for Vehicles School of Materials Science and Engineering Tongji University Shanghai 201804 China

Solid-state polymer electrolytes(SPEs)are candidate schemes for meeting the safety and energy density needs of advanced lithium-based battery because of their improved mechanical and electrochemical stability compared to traditional liquid ***,low ionic conductivity and side reactions occurring in traditional high-voltage lithium metal batteries(LMBs)hinder their practical ***,amino-modified metal-organic frameworks(UiO-66-NH_(2))with abundant defects as multifunctional fillers in the polyurethane based SPEs achieve the collaborative promotion of the mechanical strength and room temperature ionic *** surface modified amino groups serve as anchoring points for oxygen atoms of polymer chains,forming a firmly hydrogen-bond interface with polycarbonate-based polyurethane *** rich interfaces between UiO-66-NH_(2) and polymers dramatically decrease the crystallization of polymer chains and reduce ion transport impedance,which markedly boosted the ionic conductivity to 2.1×10^(−4) S·cm^(−1) with a high Li+transference numbers of *** a result,LiFePO4∣SPEs∣Li cells exhibit prominent cyclability for 700 cycles under 0.5 C with 96.5%capacity *** LiNi_(0.6)Co_(0.2)Mn_(0.2)O_(2)(NCM622)∣SPEs∣Li cells deliver excellent long-term lifespan for 260 cycles with a high capacity retention of 91.9%and high average Coulombic efficiency(98.5%)under ambient *** simple and effective hybrid SPE design strategy sheds a milestone significance light for high-voltage Li-metal batteries.

关键词： solid-state polymer electrolyte metal-organic frameworks polyurethane lithium metal batteries high voltage interface

Selling creates a loss while buying generates a gain: Capturing the implicit irrational bias by the IAT method

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Chinese Science Bulletin 2008年第14期53卷 2253-2256页

作者： huang yunhui SHI JunQi WANG Lei Department of Psychology Peking University Beijing 100871 China

The endowment effect is the tendency for a person to demand more in return for selling an object than he or she would be willing to pay for the same product. Thaler suggested that the reason of endowment effect lies in that selling creates a loss while buying generates a gain. Although prior research has demonstrated the existence of loss aversion, few researchers have focused on the connection between "selling vs. buying" and "losing vs. gaining", and a recent research with a self-report method failed to find solid evidence for such a connection. The present research applied the implicit association test, a latency method, to confirm this connection. The results demonstrated that selling was more closely connected to losing while buying was more closely connected to gaining. Thus the bias resulting from loss aversion and gain preference was confirmed to be the underlying mechanism of the endowment effect. The previous failure to find such an association may be due to the insensitivity of the self-report method. Here the implication of the findings and method for experimental economic psychology is discussed.

关键词：自然反应心理暗示心理测试心理学

Distress Characteristics in Embankment‑Bridge Transition Section of the Qinghai‑Tibet Railway in Permafrost Regions

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International Journal of Disaster Risk Science 2023年第4期14卷 680-696页

作者： Peifeng He Fujun Niu yunhui huang Saize Zhang Chenglong Jiao State Key Laboratory of Subtropical Building Science South China University of TechnologyGuangzhou 510641China South China Institution of Geotechnical Engineering School of Civil Engineering and TransportationSouth China University of TechnologyGuangzhou 510641China School of Civil Engineering Changsha University of Science and TechnologyChangsha 410114China

The Qinghai-Tibet Railway has been operating safely for 16 years in the permafrost zone and the railroad subgrade is generally stable by adopting the cooling roadbed ***,settlement caused by the degradation of subgrade permafrost in the embankment-bridge transition sections(EBTS)is one of the most representative and severe distresses.A feld survey on 440 bridges(including 880 EBTSs)was carried out employing terrestrial laser scanning and ground-penetrating radar for comprehensively assessing all EBTSs in the permafrost *** results show that the types of distresses of EBTSs were diferential settlement,upheaval mounds of the protection-cone slopes,subsidence of the protection-cone slopes,surface cracks of the protection cones and longitudinal and transverse dislocation of the wing *** occurrence rates of these distresses were 78.93,3.47,11.56,3.36,21.18 and 4.56%,*** most serious problem was diferential settlement,and the average diferential settlement amount(ADSA)was 15.3 ***,the relationships between diferential settlement and 11 infuencing factors were *** results indicate that ADSA is greater on the northern side of a bridge than on the southern side and on the sunny slope than on the shady *** is also greater in the high-temperature permafrost region than in the low-temperature permafrost region and in the high-ice content area than in the low-ice content *** EBTSs are more infuenced by ice content than by ground *** ADSA increases when the embankment height increases,the particle size of subgrade soil decreases and the surface vegetation cover decreases.

关键词： Distresses Embankment-bridge transition section Permafrost regions Qinghai-Tibet railway

Bifunctional LiI additive for poly(ethylene oxide)electrolyte with high ionic conductivity and stable interfacial chemistry

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Journal of Energy Chemistry 2022年第8期31卷 218-224,I0007页

作者： Haonan Wang Tianyi Hou Hang Cheng Bowen Jiang Henghui Xu yunhui huang School of Materials Science and Engineering Huazhong University of Science and TechnologyWuhan 430000HubeiChina

The development of polymer-based solid-state batteries is severely limited by the low ionic conductivity of solid polymer electrolyte and the instable interface between polymer electrolyte and Li-metal *** this work,lithium iodide(LiI)as a bifunctional additive was introduced into the poly(ethylene oxide)(PEO)-based electrolyte to improve the ionic conductivity and to construct a stable interphase at the Li/PEO interface.I-anions offer a strong electrostatic interaction with hydrogen atoms on PEO chains(HPEO)and forming massive I–H bonds that cross-link PEO chains,decrease crystallinity of PEO,and thus improve Li~+interchain *** addition,LiI participates in the formation of an inorganic-rich interphase layer,which decreases the energy barrier of Li+transport across the interface and thus inhibits the growth of lithium *** a result,the composite PEO electrolyte with 2 wt%LiI(PEO-2 LiI)presents a very high ionic conductivity of 2.1×10^(-4) S cm-1 and a critical current density of 2.0 m A cm^(-2) at 45°*** symmetric cell with this PEO-2 LiI electrolyte exhibits a long-term cyclability over 600 h at 0.2 m A cm^(-2).Furthermore,solid-state LiFePO_(4) and LiNi_(0.8)Mn_(0.1)Co_(0.1)O_(2) batteries with the PEO-2 LiI electrolyte show an impressive electrochemical performance with outstanding cycling stability and rate capability at 45°C.

关键词： Solid-state battery LiI Electrostatic interaction Crystallinity Interface