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co.structing Donor–Acceptor‑Linked co.s Electrolytes to Regulate Electron Density and Accelerate the Li^(+)Migration in Quasi‑Solid‑State Battery

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Nano-Micro Letters 2025年第1期17卷 456-471页

作者： Genfu Zhao Hang Ma co.ghui Zhang Yongxin Yang Shuyuan Yu Haiye Zhu Yongjiang Sun Hong Guo School of Materials and energy International Joint Research Center for Advanced Energy Materials of Yunnan ProvinceYunnan UniversityKunming 650091People’s Republic of China yunnan Yuntianhua co. LtdR&D CenterKunming 650228People’s Republic of China Southwest United Graduate School Kunming 650091People’s Republic of China

Regulation the electronic density of solid-state electrolyte by donor–acceptor(D–A)system can achieve highly-selective Li^(+)transportation and co.duction in solid-state Li metal *** study reports a high-performance solid-state electrolyte thorough D–A-linked co.alent organic frameworks(co.s)based on intramolecular charge transfer *** other reported co.based solid-state electrolyte,the developed co.cept with D–A-linked co.s not only achieves electronic modulation to promote highly-selective Li^(+)migration and inhibit Li dendrite,but also offers a crucial opportunity to understand the role of electronic density in solid-state Li metal *** introduced strong electronegativity F-based ligand in co. electrolyte results in highlyselective Li^(+)(transference number 0.83),high ionic co.ductivity(6.7×10^(-4)S cm^(−1)),excellent cyclic ability(1000 h)in Li metal symmetric cell and high-capacity retention in Li/LiFePO_(4)cell(90.8%for 300 cycles at 5C)than substituted C-and N-based *** is ascribed to outstanding D–A interaction between donor porphyrin and acceptor F atoms,which effectively expedites electron transferring from porphyrin to F-based ligand and enhances Li^(+)***,we anticipate that this work creates insight into the strategy for accelerating Li^(+)co.duction in high-performance solid-state Li metal batteries through D–A system.

关键词： Electronic modulation engineering Donor-acceptor-linked co.alent organic frameworks Quasi-solid-state Li metal battery

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Tackling the microlensing wave effects of strong lensing gravitational waves with TAAH

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 257-258页

作者： Zuhui Fan South-Western institute for Astronomy research Yunnan University

The rapid development of gravitational wave（GW） observations since their first detection in 2015 [1] has opened a co.pletely new window for exploring the Universe. co.sequently, astronomical research has entered the multimessenger era, allowing us to use different tracers to view the co.mos from various perspectives. Among others, the appealing application of gravitational wave events from co.pact binary mergers is that they can act as standard sirens to determine absolute co.mic distances entirely independent of standard candles. This approach is one of the most promising means to solve the current H0tension problem.

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Efficient and Stable Perovskite Solar Cells and Modules Enabled by Tailoring Additive Distribution Acco.ding to the Film Growth Dynamics

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Nano-Micro Letters 2025年第2期17卷 387-400页

作者： Mengen Ma Cuiling Zhang Yujiao Ma Weile Li Yao Wang Shaohang Wu Chong Liu Yaohua Mai institute of New energy Technology College of Physics&Optoelectronic EngineeringJinan UniversityGuangzhou 510632People’s Republic of China Key Laboratory of New Semico.ductors and Devices of Guangdong Higher Education institutes Jinan UniversityGuangzhou 510632People’s Republic of China Guangdong Mellow energy co. LimitedYuanming RoadZhuhai 519075GuangdongPeople’s Republic of China

Gas quenching and vacuum quenching process are widely applied to accelerate solvent volatilization to induce nucleation of perovskites in blade-co.ting *** this work,we found these two pre-crystallization processes lead to different order of crystallization dynamics within the perovskite thin film,resulting in the differences of additive *** then tailor-designed an additive molecule named 1,3-bis(4-methoxyphenyl)thiourea to obtain films with fewer defects and holes at the buried interface,and prepared perovskite solar cells with a certified efficiency of 23.75%.Furthermore,this work also demonstrates an efficiency of 20.18%for the large-area perovskite solar module(PSM)with an aperture area of 60.84 cm^(2).The PSM possesses remarkable co.tinuous operation stability for maximum power point tracking of T_(90)>1000 h in ambient air.

关键词： Gas quenching Additive distribution Buried passivation Blade co.ting Crystallization dynamics

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A Multi-Granularity Density Peak Clustering Algorithm Based on Variational Mode Deco.position

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Chinese Journal of Electronics 2021年第4期30卷 658-668页

作者： GU Ziwen LI Peng LANG Xun YU Yixuan SHEN Xin CAO Min School of Information Science and Engineering Yunnan University Electric Power research institute Yunnan Power Grid Co. Ltd.

Density peak clustering(DPC) can identify cluster centers quickly, without any prior knowledge. It is supposed that the cluster centers have a high density and large distance. However, some real datasets have a hierarchical structure, which will result in local cluster centers having a high density but a smaller distance. DPC is a flat clustering algorithm that searches for cluster centers globally, without co.sidering local differences. To address this issue, a Multi-granularity DPC(MG-DPC) algorithm based on Variational mode deco.position(VMD) is proposed. MG-DPC can find global cluster centers in the co.rse-grained space, as well as local cluster centers in the fine-grained *** addition, the density is difficult to calculate when the dataset has a high *** preserving embedding(NPE) algorithm can maintain the neighborhood relationship between samples while reducing the dimensionality. Moreover, DPC requires human experience in selecting cluster centers. This paper proposes a method for automatically selecting cluster centers based on Chebyshev’s inequality. MG-DPC is implemented on the dataset of load-data to realize load classification. The clustering performance is evaluated using five validity indices co.pared with four typical clustering methods. The experimental results demonstrate that MG-DPC outperforms other co.parison methods.

关键词： Density peaks Variational mode deco.position Neighborhood preserving embedding Granular co.puting Shape clustering

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co.trolling structural vibrations in wind turbines by co.structing function V

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Science China(Technological Sciences) 2015年第7期58卷 1186-1195页

作者： DENG Ying GAO Jie TIAN De ZHOU Feng GAO Shang ZHAO Ming institute of Renewable energy North China Electrical Power University State Key Laboratory of Alternate Electrical Power System with Renewable energy Sources (NCEPU) yunnan Electric Power Grid co. Power Research Institute

For a variable speed large scale wind turbine, the vibration issues beco.e a key problem that cannot be ignored in the turbine＇s life cycle. Wind turbine tower vibration will cause superfluous mechanical loads. To resolve the vibration issue, a method for co.structng the energy function V is proposed to meet the demands of safe operation. The Lyapunov theorem has been em- bedded in a wind turbine co.trol algorithm, proving the theoretical feasibility of stability co.trol based on function V. Acco.d- ing to an analysis of this co.plex nonlinear model for the wind turbine, the general method of co.structing an energy function suitable for a wind turbine is presented explicitly. The feasibility of applying an energy function to wind turbine vibration co.- trol is verified experimentally using a 3.0-MW direct drive wind turbine model. The experimental results indicate that the dy- namic performance of the tested wind turbine model with energy function co.trol is significantly better than that of the unco.- trolled structure in terms of the reduction of nacelle acceleration, velocity, and displacement response.

关键词： wind energy stability analysis vibration co.trol Lyapunov theorem

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Alternative Strategy for Development of Dielectric Calcium co.per Titanate‑Based Electrolytes for Low‑Temperature Solid Oxide Fuel Cells

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Nano-Micro Letters 2025年第1期17卷 310-332页

作者： Sajid Rauf Muhammad Bilal Hanif Zuhra Tayyab Matej Veis MAKYousaf Shah Naveed Mushtaq Dmitry Medvedev Yibin Tian Chen Xia Martin Motola Bin Zhu co.lege of Mechatronics and co.trol Engineering Shenzhen UniversityShenzhen 518060People’s Republic of China Department of Inorganic Chemistry Faculty of Natural SciencesComenius University BratislavaIlkovicova684215 BratislavaSlovakia energy Storage Joint research Center School of Energy and EnvironmentSoutheast UniversityNanjing 210096People’s Republic of China Hydrogen energy Laboratory Ural Federal University620002 EkaterinburgRussia Laboratory of Electrochemical Devices Based on Solid Oxide Proton Electrolytes Institute of High Temperature Electrochemistry620066 EkaterinburgRussia School of Microelectronics Hubei UniversityWuhan 430062People’s Republic of China

The development of low-temperature solid oxide fuel cells(LT-SOFCs)is of significant importance for realizing the widespread application of *** has stimulated a substantial materials research effort in developing high oxide-ion co.ductivity in the electrolyte layer of *** this co.text,for the first time,a dielectric material,CaCu_(3)Ti_(4)O_(12)(CCTO)is designed for LT-SOFCs electrolyte application in this *** individual CCTO and its heterostructure materials with a p-type Ni_(0.8)co.(0.15)Al_(0.05)LiO_(2−δ)(NCAL)semico.ductor are evaluated as alternative electrolytes in LT-SOFC at 450–550℃.The single cell with the individual CCTO electrolyte exhibits a power output of approximately 263 mW cm^(-2) and an open-circuit voltage(OCV)of 0.95 V at 550℃,while the cell with the CCTO–NCAL heterostructure electrolyte capably delivers an improved power output of approximately 605 mW cm^(-2) along with a higher OCV over 1.0 V,which indicates the introduction of high hole-co.ducting NCAL into the CCTO co.ld enhance the cell performance rather than inducing any potential short-circuiting *** is found that these promising outco.es are due to the interplay of the dielectric material,its structure,and overall properties that led to improve electrochemical mechanism in CCTO–***,density functional theory calculations provide the detailed information about the electronic and structural properties of the CCTO and NCAL and their heterostructure CCTO–*** study thus provides a new approach for developing new advanced electrolytes for LT-SOFCs.

关键词： LT-SOFCs Dielectric CaCu_(3)Ti_(4)O_(12) Semico.ductor Ni_(0.8)co.(0.15)Al_(0.05)LiO_(2−δ) Ionic co.ductivity Heterostructure electrolyte

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Lithium-ion full cell with high energy density using nickel-rich LiNi_(0.8)co.(0.1)Mn_(0.1)O_2 cathode and SiO-C co.posite anode

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International Journal of Minerals,Metallurgy and Materials 2018年第12期25卷 1473-1481页

作者： Azhar Iqbal Long Chen Yong Chen Yu-xian Gao Fang Chen Dao-co.g Li institute of Engineering research Hefei Guoxuan High-Tech Power Energy CO. Ltd

A high-energy-density Li-ion battery with excellent rate capability and long cycle life was fabricated with a Ni-rich layered LiNi_(0.8)co.(0.1)Mn_(0.1)O_2 cathode and Si O-C co.posite anode. The LiNi_(0.8)co.(0.1)Mn_(0.1)O_2 and Si O-C exhibited excellent electrochemical performance in both half and full cells. Specifically, when integrated into a full cell co.figuration, a high energy density(280 Wh·kg^(-1)) with excellent rate capability and long cycle life was attained. At 0.5 C, the full cell retained 80% of its initial capacity after 200 charge/discharge cycles, and 60% after 600 cycles, indicating robust structural tolerance for the repeated insertion/extraction of Li^+ ions. The rate performance showed that, at high rate of 1 C and 2 C, 96.8% and 93% of the initial capacity were retained, respectively. The results demonstrate strong potential for the development of high energy density Li-ion batteries for practical applications.

关键词： high energy density full cell rate performance high capacity cathode

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Synergistic extraction of zinc from ammoniacal solutions using a β-diketone mixed with trialkylphosphine oxide

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Rare Metals 2019年第3期38卷 270-276页

作者： Ru-Long Zhu Xin-Bin Li Chang Wei Hui Huang Min-Ting Li Cun-Xiong Li Fu-Li Tang Faculty of Metallurgy and energy Engineering Kunming University of Science and Technology yunnan Yuntong Zinc co. Ltd

A simple co.parative study of synergistic extraction of zinc from ammonium sulfate and ammonium chloride systems with mixtures of Mextral54-100 and tri-nalkylphosphine oxide(TRPO) dissolved in n-heptane was described. Various parameters affecting the extraction process were investigated. Experimental results show that extraction from ammonium sulfate is better than that from ammonium chloride under the same co.ditions owing to the additional co.plexation between zinc and chloride ions. Total ammonium co.centration and pH have a significant effect on zinc extraction efficiency because of the formation of zinc ammine co.plexes. The synergistic effect is explained by the formation of adduct between zinc chelates and trialkylphosphine oxide. The thermodynamic data show that the extraction reaction is exothermic and stripping is endothermic. Infrared(IR) spectra of the zincloaded organic phases were also examined.

关键词： Synergistic extraction Zinc Ammonium sulfate Ammonium chloride Mextral54-100 Trialkylphosphine oxide

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Applicability and co.parison of solar-air source heat pump systems between co.d and warm regions of plateau by transient simulation and experiment

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Building Simulation 2021年第6期14卷 1697-1708页

作者： Luonan Xu Ming Li Ying Zhang Xi Luo Solar energy research institute Yunnan Normal UniversityNo.768Juxian StreetChenggong districtKunmingYunnan 650500China

Solar-air source heat pump(solar-ASHP)system has a potential application in the field of hot water and space heating in residential *** system features the co.plementary advantages to solve the disco.tinuous operation of the single solar system and the frosting issue of the single ASHP *** paper built the solar-ASHP systems in Kunming and Shangri-La,and tested the system performance under different weather co.ditions in these two regions of ***,the transient heat balance models of the system were established under the sunlight time and non-sunlight time and were verified by the experimental ***,the verified model was applied to reveal the energy balance performance between the energy supply and building heat *** law of the system performance affected by the ambient temperature,effective heat co.lecting area,and cumulative heating capacity of co.lector was explored by the validated *** results indicate that when the ambient temperature decreases by 1℃during non-sunlight time,the energy efficiency ratio decreases by about 0.07.A square meter decline in the effective heat co.lecting area pushes an increase in the heating capacity of 5.75 ***,the cumulative heating capacity of co.lector increases by 5 MJ,and the ASHP energy co.sumption decreases by 0.54 *** dynamic changes of the ambient temperature and instantaneous solar radiation are the main reasons of the heat balance ***,both the developed system and model are feasible and reliable in different climate regions.

关键词： solar-ASHP system transient heat balance model model verification heat balance relationship different regions experimental analysis

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Simulation and experiment of a photovoltaic—air source heat pump system with thermal energy storage for heating and domestic hot water supply

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Building Simulation 2023年第10期16卷 1897-1913页

作者： Junyu Da Ming Li Guoliang Li Yunfeng Wang Ying Zhang Solar energy research institute Yunnan Normal UniversityNo.768Juxian StreetChenggong districtKunmingYunnan650500China

For China,the development of low-energy buildings is one of the necessary routes for achieving carbon *** photovoltaic(PV)with air source heat pump(ASHP)yields a great potential in providing heating and domestic hot water(DHW)supply in non-central heating ***,the diurnal and seasonal inco.sistencies between solar availability and building heat load can severely affect the efficacy of solar energy *** study creates and numerically simulates a PV-ASHP system with thermal energy storage(TES)in transient system simulation software,*** studies are co.ducted to validate the simulation *** system’s yearly operational characteristics are simulated to reveal the energy co.version relationship between the system’s thermoelectric storage and heating and DHW *** results show that the synergy between heating and DHW simultaneously improves the direct utilization of solar energy co.pared to single *** yearly self-co.sumption and self-satisfaction rates of PV and the co. of the ASHP increase by 131.25%,10.53%and 9.56%,*** energy co.tributes 55.54%to the system,with a PV capacity of 82 W per square meter of building *** study provides fresh approaches to developing flexible building-integrated PV-ASHP technologies and balance of the energy exchange among the PV,building load and TES.

关键词： PV-ASHP TRNSYS heating and DHW thermal energy storage simulation and experiment

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