检索结果-内蒙古大学图书馆

Deciphering Water Oxidation Catalysts:The Dominant Role of Surface Chemistry over Reconstruction Degree in Activity Promotion

引用

Nano-Micro Letters 2025年第3期17卷 340-354页

作者： Li An Jianyi Li Yuanmiao Sun Jiamin Zhu Justin Zhu Yeow Seow Hong Zhang Nan Zhang Pinxian Xi Zhichuan J.Xu Chun‑Hua Yan State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceFrontiers Science Center for Rare IsotopesCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000People’s Republic of China School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore Faculty of Materials Science and Energy Engineering Institute of Technology for Carbon NeutralityShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055People’s Republic of China Key Laboratory of Electromagnetic Materials and Devices National Center for International Research On Photoelectric and Energy MaterialsSchool of Materials and EnergyElectron Microscopy CenterYunnan UniversityKunming 650091People’s Republic of China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030People’s Republic of China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsPKU‑HKU Joint Laboratory in Rare Earth Materials and Bioinorganic ChemistryPeking UniversityBeijing 100871People’s Republic of China

Water splitting hinges crucially on the availability of electrocatalysts for the oxygen evolution *** surface reconstruction has been widely observed in perovskite catalysts,and the reconstruction degree has been often correlated with the activity ***,a systematic study on the roles of Fe substitution in activation of perovskite LaNiO_(3)is *** substituting Fe content influences both current change tendency and surface reconstruction ***_(0.9)Fe_(0.1)O_(3)is found exhibiting a volcano-peak intrinsic activity in both pristine and reconstructed among all substituted perovskites in the LaNi_(1-x)Fe_(x)O_(3)(x=0.00,0.10,0.25,0.50,0.75,1.00)*** reconstructed LaNi_(0.9)Fe_(0.1)O_(3)shows a higher intrinsic activity than most reported NiFe-based ***,density functional theory calculations reveal that Fe substitution can lower the O 2p level,which thus stabilize lattice oxygen in LaNi0.9Fe0.1O3 and ensure its long-term ***,it is vital interesting that activity of the reconstructed catalysts relied more on the surface chemistry rather than the reconstruction *** effect of Fe on the degree of surface reconstruction of the perovskite is decoupled from that on its activity enhancement after surface *** finding showcases the importance to customize the surface chemistry of reconstructed catalysts for water oxidation.

关键词： Oxygen evolution reaction Perovskite oxides Doping Activation and reconstruction

来源：评论

学校读者我要写书评

暂无评论

Editorial: special topic on photovoltaic materials, devices, and applications

引用

Science China Materials 2025年第5期68卷 1311-1313页

作者： Lifu Zhang Bin Kan Yiwang Chen Yongsheng Chen Yongfang Li Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education Jiangxi Normal University School of Materials Science and Engineering National Institute for Advanced MaterialsNankai University State Key Laboratory and Institute of Elemento-Organic Chemistry Frontiers Science Center for New Organic MatterThe Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer MaterialsRenewable Energy Conversion and Storage Center (RECAST)College of ChemistryNankai University Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of Sciences

To reduce society’s dependence on fossil fuels, new photovoltaic technologies are driving a fundamental change in the way renewable energy is utilized. This issue of “Photovoltaic Materials, Devices, and Applications” focuses on the latest break-throughs in this field, and systematically discusses the path of technological innovation, practical challenges, and future opportunities.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Lifecycle Synergistic Prelithiation Strategy of Both Anode and Cathode for High-Performance Lithium-Ion Batteries

引用

advanced Energy Materials 2025年第0期

作者： Zhong, Wei He, Renjie Peng, Linfeng Liu, Wei Peng, Jiayue Zhu, Haolin Xiang, Jingyu Cheng, Shijie Xie, Jia State Key Laboratory of Materials Processing and Die & Mould Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan430074 China State Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan430074 China School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan430074 China

Prelithiation is recognized as an effective technology for addressing the depletion of active lithium, but conventional methods are constrained by their reliance on singular lithium replenishment mechanisms and limited functionality. Herein, a synergistic and comprehensive lifecycle prelithiation technology is introduced as applicable to both anode and cathode. For anode prelithiation, highly reactive biphenyl lithium is leveraged as a lithium replenishing agent, supplemented by functional additives, ethoxy(pentafluoro)cyclotriphosphazene (PFPN) and fluoroethylene carbonate (FEC), to generate a robust SEI enriched with Li3N, LiF, Li3P and Li2O. This approach not only compensates for the initial active lithium loss but also fortifies the structural integrity of the SEI. For cathode prelithiation, the high-capacity lithium replenisher Li2C2O4 and Li2C4O4 comprising B, N double-doped carbon loaded Mo2C-W2C (Mo-W@BNC) heterogeneous catalysts is employed, which exhibits superior catalytic performance in facilitating the release of lithium. The exceptional efficient liberations of lithium are achieved at discharge voltages of 3.78 V and 4.14 V for Li2C2O4 and Li2C2O4, respectively. The prelithiation for both anode and cathode mitigates the initial active lithium loss by 22.6%. Moreover, a singular activation during subsequent usage contributes an additional 0.8 mAh cm−2 of active lithium, achieving a capacity retention of 99.3% after 250 cycles at 0.5C. © 2025 Wiley-VCH GmbH.

关键词： Lithium-ion batteries

来源：评论

学校读者我要写书评

暂无评论

Unlocking Spatio-Temporal Flexibility of Data Centers in Multiple Regional Peer-to-Peer Energy Transaction Markets

引用

IEEE Transactions on Power Systems 2025年

作者： Jin, Tianyu Bai, Linquan Yan, Mingyu Chen, Xinyu Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Technology Wuhan430074 China University of North Carolina at Charlotte William States Lee College of Engineering CharlotteNC28223 United States

Recently, the growth of distributed energy resources (DERs) has aroused peer-to-peer (P2P) energy transaction. With abundant flexibility of shifting computational tasks, data centers could participate in the P2P energy transaction market. However, the revenue that one data center receives through participating in regional P2P markets may conflict with that of the whole company owning several geographical data centers. Furthermore, the market clearing would be more complex after considering the latency characteristics of data centers and privacy protection in P2P transactions. This paper proposes an integrated multiple regional P2P energy transaction (MRPET) model, unlocking both the spatial and temporal flexibility of data centers in P2P trading. The detailed models of data centers, especially considering the total delay in processing tasks, are constructed, as well as several operational constraints of prosumers and P2P energy transaction. A two-stage algorithm based on Alternating Direction Method of Multipliers (ADMM) is proposed for joint clearing of the MRPET markets. The proposed models and algorithm are examined in test systems and the results show that more renewable generation could be locally consumed with the re-dispatch of multiple data centers. Reduced costs are achieved for both the data center company and prosumers. The case study also analyzes the impact of task variation and delay cost on the schedule of data centers and market clearing. © 1969-2012 IEEE.

关键词： Commerce

来源：评论

学校读者我要写书评

暂无评论

A Variable Parameter Series Compensation Method Featuring Fast Dynamic Response for Dual Active Bridge Converter in Battery Charging/Discharging Applications

引用

IEEE Transactions on Power Electronics 2025年

作者： Wang, Feng Wang, Xuehua Yuan, Jialing Ruan, Xinbo Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Wuhan430074 China Nanjing University of Aeronautics and Astronautics Center for More-Electric-Aircraft Power Systems College of Automation Engineering Nanjing210016 China

The extended-phase-shift (EPS) modulated dual-active-bridge (DAB) converter has become prevalent in battery charging/discharging systems, where low overshoot and short settling time are critically required. However, wide variations in battery voltage and current and abrupt operating mode transitions tend to challenge the dynamic performance of the converter. In this paper, a small-signal model is developed, the potential challenge due to the wide-range variations or abrupt mode transitions is evaluated, and a variable parameter series compensation (VPSC) method is proposed. The proposed method can adjust its parameters in real time according to the variations in battery voltage and current, making the dynamics of the EPS-DAB converter immune to the variations. For practical implementation, a polynomial-fit approximation is conducted to minimize the computational complexity. An execution-optimized flowchart is also provided. Experimental results on a 45-kW prototype demonstrate the effectiveness of the VPSC method. Even under the worst case when the battery voltage is 107 V and the battery current steps from 100 A to -100 A, no overshoot arises and the settling time is less than 6 ms. © 1986-2012 IEEE.

关键词： Polynomial approximation

来源：评论

学校读者我要写书评

暂无评论

Degradation of target pollutants under simultaneous competition from coexisting compounds: Electron-beam treatment of a real hair dye wastewater

引用

Radiation Physics and Chemistry 2025年 236卷

作者： Bao, Qiburi Yu, Boming Li, Wangrui Yang, Miao Dong, Zhen Zhao, Long School of Chemistry Chemical Engineering and Life Sciences Wuhan University of Technology Wuhan430070 China State Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan430074 China

Water pollution resulting from the extensive production and consumption of hair dyes has been threatening human health and aquatic ecosystems globally. Gaining knowledge on the presence of compounds in real hair dye wastewater and developing efficient treatment are emerging issues. This paper studies the electron beam irradiation of a real hair dye industrial wastewater. The CODCr of the industrial wastewater was reduced by 35 % through EB irradiation at 9 kGy. Four dyestuff intermediates (phenol, 5-amino-o-cresol, 5-amino-4-chloro-o-cresol and 5-amino-6-chloro-o-cresol) were identified as the target pollutants through compositional analysis of the wastewater. The removals of target pollutants in single-component solutions reached 75.7 %–89.7 % at 9 kGy The influence of coexisting background components on the degradation of targets was investigated and the interaction between different targets was evaluated during the irradiation treatment. Compared with pure single solutions, the required doses for 50 % removal of the targets in the wastewater increased by 0.1–5.8 times. Quantitative assessment of the competing effects of non-target components and the selectivity of reactive species is performed. [rad]OH and [rad]O2− show much lower selectivity toward the targets than reducing radicals (eaq− and [rad]H). Among them, [rad]O2− exhibits the lowest selectivity toward phenol with a logf value of −0.51. The main breakdown products of the target pollutants are quinones, diphenols and carboxylic acids. © 2025 Elsevier Ltd

关键词： River pollution

来源：评论

学校读者我要写书评

暂无评论

Design,synthesis and biological evaluation of Leu_(10)-teixobactin analogues

引用

Chinese Chemical Letters 2025年第4期36卷 157-161页

作者： Yanye Fan Jingjing Chen Bichun Chen Jinyu Bai Bowen Yang Feng Liang Lijing Fang The State Key Laboratory of Refractories and Metallurgy School of Chemistry and Chemical EngineeringWuhan University of Science and TechnologyWuhan 430081China Guangdong Key Laboratory of Nanomedicine CAS-HK Joint Lab of BiomaterialsACS Key Laboratory of Biomedical Imaging Science and SystemInstitute of Biomedicine and BiotechnologyShenzhen Institute of Advanced Technology(SIAT)Chinese Academy of SciencesShenzhen 518055China University of Chinese Academy of Sciences Beijing 100049China Sino-Euro Center of Biomedicine and Health Shenzhen 518024China School of Pharmacy Lanzhou UniversityLanzhou 730000China

Two thioamino acids and four fiuorinated amino acids were employed to substitute either partially or entirely the Ile_(2),Ser_(3),Ile_(6),and Ser_(7) residues of Leu_(10)-teixobactin to prepare ten analogues and the bioactivity of them was *** SAR studies revealed that Ile_(6) was tolerable for both thioamidation and fiuoridation,while Ser_(7) was identified as the most tolerable site for *** 1a demonstrated comparable or slightly improved antibacterial activity,superior protease stability compared to Leu_(10)-teixobactin,while not exhibiting obvious cytotoxicity against mammalian cells.

关键词： Leu_(10)-teixobactin Thioamidation Fluorination Antibacterial activity Protease stability

来源：评论

学校读者我要写书评

暂无评论

Analysis and Enhancement of Synchronization Stability in Grid-forming PV Systems Using Torque Component Quantification

引用

IEEE Transactions on Energy Conversion 2025年

作者： Chen, Qiong Tang, Yajie Gong, Diyang Lin, Lei Zeng, Qianqian Shi, Xiaojie State Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronic Engineering Wuhan430074 China Electric Power Research Institute State Grid Zhejiang Electric Power Co. Ltd. Hangzhou310022 China

With the rapid deployment of distributed PVs, the stability issues become a serious concern for power systems. As a solution, the grid-forming control (GFM) featuring active regulation of voltage and frequency emerges. Among various GFM schemes, the DC-link voltage synchronous control has attracted tremendous attention as it can stabilize the DC-link voltage of PV systems and utilize the stored energy of their DC-link capacitors to mimic the inertia support. However, a PV system using the DC-link voltage synchronous control (PV-DVSC) can cause low-frequency oscillations (LFOs) under certain operating conditions. To mitigate such risks, this paper investigates the mechanism of LFO and associated suppression method, utilizing the torque component quantification. Firstly, a torque analysis model of the PV-DVSC is established to elucidate the contribution of different control loops on LFO from a torque vector perspective. Additionally, the impacts of key parameters on LFO are quantitatively assessed via the damping and synchronizing torques. Leveraging these torques, a torque-oriented phase compensator (TOPC) is designed, targeting a positive torque to effectively suppress the unstable LFO even under extreme conditions such as desynchronization. Finally, the validity of above analysis and proposed TOPC strategy are verified through simulation control-hardware-in-The-loop test results. © 2025 IEEE.

关键词： Electric power system control

来源：评论

学校读者我要写书评

暂无评论

Knowledge-assisted Approach for Contactless Current Measurement in Multiconductor Systems

引用

IEEE Transactions on Industry Applications 2025年

作者： Ma, Chaojun Xu, Yingying Chen, Qing Jiao, Yang Qu, Zeming He, Cheng Huazhong University of Science and Technology School of Electrical and Electronic Engineering Institute of Artificial Intelligence School of Artificial Intelligence and Automation Wuhan430074 China Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronic Engineering Wuhan430074 China

Current measurements of multiconductor systems are essential for smart grids, but conventional intrusive measurement approaches require power outages before deployment and maintenance and thus are expensive and may reduce system stability. Though many contactless current measurement approaches have been proposed in recent years, the challenge of easing the impact of conductor positions and decoupling current information remains. This paper proposes a novel approach that combines a cost-effective annular magnetic field (MF) sensor array with an inverse calculation technique for precise, contactless current measurements in multiconductor systems. Specifically, the MF sensor array captures the MF distribution surrounding the multiconductor systems for characterizing the coupled current information. Then, the hardware-oriented measurement task is reformulated into a computational optimization problem, where the currents and conductor positions are mathematically related to the MF distribution for decoupling. Meanwhile, an effective algorithm is tailored, where knowledge about the current and MF distribution is used to generate promising initial solutions for efficiency and effectiveness improvement. Experimental results demonstrate that the proposed approach achieves high accuracy in current measurement considering the impact of conductor positions, with error rates maintained below 1% and 2% in balanced and unbalanced cases, respectively. Additionally, an abnormal MF sensing data correction method is developed to further ensure measurement accuracy, showing resilience to sensor anomalies and maintaining a relative measurement error below 2% after correction. © 1972-2012 IEEE.

关键词： Smart power grids

来源：评论

学校读者我要写书评

暂无评论

Minimum Steady-state Fault Current of GridForming Inverters With Virtual Impedance-Based Current Limiting Caused by Active Power Control

引用

IEEE Transactions on Power Electronics 2025年

作者： Liu, Tao Shi, Xiaojie Yan, Jianan Wang, Zhiqiang Yin, Tianxiang Lin, Lei State Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronic Engineering Wuhan430074 China Imperial College London Energy Futures Lab Control and Power Group Electrical and Electronic Engineering Department LondonSW7 2AZ United Kingdom

Fault current limiting based on virtual impedance (VI) has been widely utilized in grid-forming (GFM) inverters. The VI magnitude is generally designed to its maximum value under the worst case, which reduces the point of common coupling (PCC) voltage magnitude to limit the steady-state fault current. However, this letter reveals that due to the constraints imposed by the active power control during the steady state, as the PCC voltage magnitude decreases, its phase angle increases, which has been ignored. The opposite effects of VI on the PCC voltage magnitude and phase angle lead to a minimum steady-state fault current that is independent of VI. During severe grid voltage sags, this minimum steady-state fault current can exceed the current limit, making the effective fault current limiting impossible by using VI alone. This finding provides new insights into the steady-state analysis and control optimization of GFM inverters. Experimental results validate the theoretical findings. © 1986-2012 IEEE.

关键词： Grid-forming control minimum steady-state fault current virtual impedance (VI)- based current limiting

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：