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Design of Layer Structure Metal Oxide Material with Dual-Ion Defects for High-Performance Aqueous Zn Ion Batteries

ACS SUSTAINABLE CHEMISTRY & engineering 2023年第42期11卷 15273-15281页

作者： Li, Yuying Guo, Xinli Cao, Zhen Wang, Shaohua Fu, Qiuping Zheng, Yanmei Qu, Junnan Li, Ruiting Zhao, Li Luo, Dan Chen, Zhongwei Southeast Univ Sch Mat Sci & Engn Jiangsu Key Lab Adv Met Mat Nanjing 211189 Peoples R China Chinese Acad Sci Dalian Inst Chem Phys Power Battery & Syst Res Ctr Dalian 116023 Peoples R China Univ Waterloo Waterloo Inst Nanotechnol Dept Chem Engn Waterloo ON N2L 3G1 Canada

Layer structure metal oxides are promising energy storage materials for rechargeable batteries. However, they are still hindered by insufficient ion storage sites and sluggish ion diffusion kinetics during ion insertion/extraction, leading to unsatisfactory battery performance. Herein, we have successfully designed layer structure metal oxides with regulated dual-ion defects via the ion exchange and annealing processes. As for demonstration, a KivTOev@Ti anode with dual-ion defects by incorporating with the interlaminar K vacancies and layer edge O vacancies in layer structure potassium titanate (KTO) was synthesized for Zn ion batteries. The bionic defects in the KivTOev@Ti anode are indicated to provide extra space for potent Zn ion storage and enhance the Zn ion diffusion rate. Complete inner layer structure and residual interlayer K ion pillars ensure that the KivTOev@Ti anode has highly structural stability and reversible electrochemistry. Therefore, KivTOev@Ti delivers a favorable Zn ion storage capability of 179.2 mAh g(-)(1) at 0.05 A g(-1), and a remarkable cycling stability of 82% capacity retention after 5000 cycles at 0.5 A g(-1). The ZnxMnO2//KivTOev@Ti full cell presents an excellent power/energy density of 583.5 W kg(-1)/97.8 Wh kg(-1), respectively, and maintains a capacity retention of 90% after 5000 cycles. This work can enlighten material engineering for energy storage area.

关键词： aqueous Zn ion battery potassium titanate dual-ion defects interlaminarK vacancies layeredge O vacancies

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Recent progress on single-atom catalysts for lithium-air battery applications

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ENERGY & ENVIRONMENTAL SCIENCE 2023年第4期16卷 1431-1465页

作者： Bai, Tiansheng Li, Deping Xiao, Shenyi Ji, Fengjun Zhang, Shuai Wang, Chu Lu, Jingyu Gao, Quan Ci, Lijie Harbin Inst Technol Shenzhen Sch Mat Sci & Engn State Key Lab Adv Welding & Joining Shenzhen 518055 Peoples R China Harbin Inst Technol Shenzhen Sch Sci Shenzhen 518055 Peoples R China Ningxia Univ Coll Chem & Chem Engn State Key Lab High efficiency Utilizat Coal & Gree Yinchuan 750021 Peoples R China

Lithium-air batteries (LABs) have attracted extensive attention due to their high theoretical energy density based on the "Holy Grail", the lithium metal anode and the inexhaustible air as the cathode. However, their intrinsic low catalytic activity, including the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) processes, undesirable high overpotential, low reversibility and poor cyclability hinder their development. Recently, single-atom catalysts (SACs) with high atom utilization and cost-effective prospects have shown excellent ORR/OER kinetics in various catalytic systems. Consequently, they have attracted increasing attention, especially in the past three years and achieved improvement in their electrochemical performances. With these in mind, this review first introduces the structure, characteristics, and synthesis methods of SACs and then summarizes the reported SACs for LABs based on both oxygen and carbon dioxide chemistry. The research progress of SACs in regulating the lithium metal anode is also discussed. Finally, challenges and opportunities for the synthesis, characterization, and application of SACs, as well as the structure-performance correlations are comprehensively summarized and corresponding perspectives are addressed.

关键词： Carbon dioxide

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Ultrathin transition metal oxychalcogenide catalysts for oxygen evolution in acidic media

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NATURE SYNTHESIS 2025年第3期4卷 327-335页

作者： Xu, Wenshuo Wu, Yao Xi, Shibo Wang, Yan Wang, Ye Ke, Yuxuan Ding, Lingtong Wang, Xiao Yang, Jieun Zhang, Wenjing Loh, Kian Ping Ding, Feng Liu, Zheng Chhowalla, Manish Univ Cambridge Dept Mat Sci & Met Cambridge England Nanyang Technol Univ Sch Mat Sci & Engn Singapore Singapore ASTAR Inst Sustainabil Chem Energy & Environm Singapore Singapore Shenzhen Univ State Key Lab Radio Frequency Heterogeneous Integr Shenzhen Peoples R China Shenzhen Univ Adv Technol Fac Mat Sci & Energy Engn Shenzhen Peoples R China Chinese Acad Sci Inst Technol Carbon Neutral Shenzhen Inst Adv Technol Shenzhen Peoples R China Southern Univ Sci & Technol Dept Mat Sci & Engn Guangdong Prov Key Lab Funct Oxide Mat & Devices Shenzhen Peoples R China Kyung Hee Univ Dept Chem Seoul South Korea Natl Univ Singapore Dept Chem Singapore Singapore

Two-dimensional transition metal dichalcogenides (TMDs) exfoliated from bulk layered materials possess interesting properties. Most transition metal oxides are not layered and therefore cannot be exfoliated. Here we report the synthesis of a family of ultrathin materials-transition metal oxychalcogenides (TMOCs)-and demonstrate their unique properties. Two-dimensional TMOCs (MXxOy, M = group IV or V transition metal, X = chalcogen, O = oxygen;x, y = 0-2) from bulk transition metal dichalcogenides (MX2) have been fabricated using tetrabutylammonium intercalation. The stoichiometry of TMOCs can be adjusted, which enables control of their optical bandgaps and tunability of electrical conductivity by more than eight orders of magnitude. By tuning the chalcogen-to-oxygen ratio along with local atomic structure in TMOCs, it is possible to impart unexpected properties. For example, in contrast to conventional TMDs, the hybrid structure of TMOCs renders them surprisingly stable and electrochemically active in strong acids, allowing them to be used as proof-of-concept catalysts for the oxygen evolution reaction at pH approximate to 0. The HfS0.52O1.09 catalyst shows high mass activity (103,000 A g-1 at an overpotential of 0.5 V) and exhibits durability in proton exchange membrane water electrolysers.

关键词： Synthesis and processing Two-dimensional materials

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engineering hollow covalent organic framework particle through self-templated crystallization

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JOURNAL OF POLYMER SCIENCE 2024年第8期62卷 1698-1705页

作者： Zheng, Zhenqian Yang, Yuhao Chen, Di Wang, Song Li, Qiulin Zhang, Ziyang Li, Wei Chen, Bajin Wang, Wen-Jun Liu, Pingwei Zhejiang Univ Coll Chem & Biol Engn State Key Lab Chem Engn Hangzhou Peoples R China Inst Zhejiang Univ Quzhou Quzhou Peoples R China Zhejiang Chuanhua Chem Grp Co Ltd Hangzhou Peoples R China Zhejiang Chuanhua Chem Grp Co Ltd Hangzhou 311217 Zhejiang Provin Peoples R China Zhejiang Univ Coll Chem & Biol Engn State Key Lab Chem Engn Hangzhou 310027 Zhejiang Provin Peoples R China

Nano/microparticles with hollow structures have many applications in various fields. However, engineering hollow covalent organic framework (COF) particles in a simple and efficient manner remains a significant challenge. In this study, we propose a self-template crystallization method to prepare imine-based COF microparticles with tailored shell thickness and high crystallinity. This method involves the post-transformation of amorphous microparticles in a highly reversible reaction system containing monofunctional competitors. The amorphous precursors with high-Gibbs free energy decompose and reconstruct to form highly crystalline COFs in situ on the particle surface. This process allows for the preparation of various Schiff-base COF particles with good crystallinity and tailored hollow structures, with diameters ranging from 120 to 680 nm and shell thicknesses of 27-96 nm. These COF particles have well-defined micropore sizes centered between 1.0 and 4.0 nm and a high-specific surface area of up to 543 m(2) g(-1). The resulted COF particles could be used to support ethylene oligomerization catalysts for improving their activity and selectivity, that is, the mass fraction of & alpha;-olefins above C-10 increased from almost zero to 52.7% after COF supporting. Our method thus provides an efficient way to precisely tailor the microstructure and morphology of COF materials for advanced applications.

关键词： covalent organic framework hollow structure post-transformation self-template

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A systematic decision -making approach for planning and assessment of hybrid renewable energy -based microgrid with techno-economic optimization: A case study on an urban community in Egypt

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SUSTAINABLE CITIES AND SOCIETY 2020年 54卷 102013-000页

作者： Elkadeem, M. R. Wang, Shaorong Azmy, Ahmed M. Atiya, Eman G. Ullah, Zia Sharshir, Swellam W. Huazhong Univ Sci & Technol Sch Elect & Elect Engn Wuhan 730074 Hubei Peoples R China Tanta Univ Fac Engn Elect Power & Machines Engn Dept Tanta 31521 Egypt Kafrelsheikh Univ Fac Engn Mech Engn Dept Kafrelsheikh 33516 Egypt

This paper proposes a systematic and integrative decision-making approach for efficient planning and assessment of hybrid renewable energy-based microgrid (HRE-MG) systems. The approach is combined with an extensive techno-economic optimization analysis. The proposed methodology is validated with an actual case study on an urban city in Egypt, with the developed HRE-MG comprising solar, wind, diesel, and fuel cell energies. Different hybridization scenarios are modeled, evaluated and compared to obtain the most practicable solution with minimum cost and emission impact. The obtained results reveal that solar, wind, fuel cell show optimal configuration plan that yields a minimum net present and energy costs. Also, it achieves a significant reduction in carbon gases and increases system renewable fraction compared to other scenarios. Further, the reliability of the proposed hybrid energy system is examined under loss of power supply probability concept. A sensitivity analysis is then conducted to verify the model accuracy and examine the cost performance of the designed system concerning uncertain parameters.

关键词： HOMER Pro (R) Hybrid renewable energy Microgrid Net present cost Levelized cost of energy Techno-envior-economic analysis Urban community

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Relationships of Internal Voltage Dependence on Power Imbalance Illustrating Characteristics and Roles in System Dynamics of Inertial-Controlled DFIG-based Wind Turbines

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CSEE Journal of Power and Energy Systems 2022年第3期11卷 1107-1117页

作者： Wan, Minhui Yuan, Xiaoming Hu, Jiabing The State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan430074 China

Frequency and voltage dynamics, as the focus of power systems, depends more and more on the frequency and amplitude response characteristics of renewable energy devices being subjected to power imbalance. Doubly-fed induction generator (DFIG)-based wind turbine (WT) is representative of renewable energy devices and shows different characteristics from those of conventional synchronous generator (SG). Unfortunately, the individual characteristics ofWT during system frequency and voltage dynamics are not intuitively illustrated by the existing structure-oriented models. Therefore, this paper aims to propose a function-oriented modeling methodology by representing inertia-controlled DFIG-based WT as internal voltage frequency and amplitude solely stimulated by active and reactive power imbalance. The individuality of characteristics is demonstrated that with grid voltage detection-based controls the internal voltage depends yet solely on power imbalance of WT, just like the case of SG. Through the infinity gain equivalence of the fast-electromagnetic loops, a simplified analytical model illustrating the electromechanical characteristics ofWT is further proposed. Based on the model, the similarities and differences between the characteristics of WT and SG are recognized. Simulation results for verification are also presented. © 2022 China Electric Power Research Institute. All rights reserved.

关键词： Wind turbines

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Ultra-high Frequency Acoustic Micro-imaging Simulation on Defect Detection at the TSV-Cu Bulk/Bonding Interface 25

Ultra-high Frequency Acoustic Micro-imaging Simulation on De...

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25th International Conference on Electronic Packaging technology (ICEPT)

作者： Tian, Zhiqiang Sheng, Can Zhao, Heran Li, Ling Xu, BinBin Cai, Zhikuang Wang, Shizhao Liu, Sheng Wuhan Univ Sch Power & Mech Engn Wuhan Peoples R China Wuhan Inst Ind Innovat & Dev Inst Codesign Chip Mfg Wuhan Peoples R China NorthEast Microelect Inst Technol Res & Dev Dept Shenyang Peoples R China Nanjing Univ Posts & Telecommun Nantong Inst Platform Business Dept Nantong Peoples R China Nanjing Univ Posts & Telecommun Coll Integrated Circuit Sci & Engn Nanjing Peoples R China Wuhan Univ Inst Technol Sci Wuhan Peoples R China

ISBN: (纸本)9798350353808

Three-dimensional integration technology based on through-silicon vias (TSVs) is an effective approach to achieving high-performance and miniaturized system-level packaging. Internal defects within TSVs and hybrid bonding interfaces are more likely to occur and are harder to detect. Traditional methods are no longer able to meet the detection requirements, making non-destructive testing of micro defects such as voids and cracks in TSVs a new challenge. In this work, a non-destructive testing method for micro defects in TSV-Cu based on ultra-high frequency acoustic micro- imaging is proposed, targeting internal defects with different pore sizes and bonding interfaces. According to the theory of ultrasound propagation, the finite element method (FEM) is used to analyze the acoustic-solid coupling field excited by focused acoustic pressure. The propagation process of ultra-high frequency ultrasound in TSV-Cu is studied, and the interaction mechanism of different types of internal defects on the acoustic wave response and the propagation law of ultra-high frequency ultrasound and the distribution of energy fields are analyzed, observing the reflection, projection, and refraction of sound waves during propagation. The influence of micro defects on the propagation of ultra-high frequency ultrasound, characteristic extraction of weak echo signals, and identification of tiny defects in TSVs are conducted, supplemented by theoretical analysis to verify and optimize the detection method, ultimately achieving efficient and high-precision detection of micro defects in TSVs. The research results provide an effective technical means for the reliability analysis of three-dimensional integration products and will promote the basic theories and technological innovation of IC packaging testing.

关键词： Acoustic micro-imaging simulation Defect detection TSV-Cu

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Blockchain-based Private Set Intersection Protocol with Attribute-based Access Control 27

Blockchain-based Private Set Intersection Protocol with Attr...

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27th International Conference on Computer Supported Cooperative Work in Design (CSCWD)

作者： Wei, Song Ma, Limin He, Zeyu Zhang, Wei Beijing Informat Sci & Technol Univ Comp Sch Beijing Peoples R China Beijing Adv Innovat Ctr Future Blockchain & Priva Beijing Peoples R China Beijing Lab Natl Econ Secur Early Warning Engn Beijing Peoples R China

ISBN: (纸本)9798350349184;9798350349191

With the rise of cloud computing, many users outsource their data to be stored in cloud servers, enjoying the convenience while facing many security issues. In the field of secure multiparty computing, traditional privacy set intersection protocol data users use cloud servers for their data outsourcing to operate for calculating the intersection, the data is susceptible to tampering by the cloud servers, and the data users do not formulate fine-grained access control policies. To solve the above problems, this paper combines blockchain with privacy set intersection for the first time, and proposes a blockchain-based privacy set intersection protocol with attribute access control. This scheme utilizes blockchain instead of a cloud server as a trusted third party, data users utilize smart contracts to compute intersection via OPRF, and attribute encryption is used to provide access control for privacy set intersection protocol. Thus, it solves the risk of data vulnerability to tampering. This paper analyzes the security of the scheme and conducts simulation experiments.

关键词： Private Set Intersection Blockchain Attribute-Based Encryption Oblivious Pseudo-Random Function

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Polyphenol-assisted albumin-based biomineralization nanocarriers with NIR-II-targeted photothermal performance towards broad-spectrum radical scavenging

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JOURNAL OF MATERIALS CHEMISTRY B 2023年第23期11卷 5108-5116页

作者： Zhao, Yaqi Wang, Jiahao Chen, Shengqiu Wei, Zhiwei Xie, Yi Zhao, Changsheng Sichuan Univ Coll Polymer Sci & Engn State Key Lab Polymer Mat Engn Chengdu 610065 Peoples R China Sichuan Univ West China Hosp Innovat Ctr Wound Repair Dept Urol Chengdu 610041 Peoples R China Shandong Lab Yantai Adv Mat & Green Mfg Yantai 264000 Peoples R China

The oxidative stress is a state of imbalance in the body's oxidative balance, which can cause or worsen many diseases. Several studies have focused on the direct scavenging of free radicals, however, the strategy of precisely controlling antioxidant activities remotely and spatiotemporally has rarely been reported. Herein, we report a method inspired by the albumin-triggered biomineralization process with polyphenol-assisted strategy to prepare nanoparticles (TA-BSA@CuS) with NIR-II-targeted photo-enhanced antioxidant capacity. Systematic characterization demonstrated that the introduction of polyphenol (tannic acid (TA)) induced the formation of a CuO-doped heterogeneous structure and CuS nanoparticles. Compared with the TA-free CuS nanoparticles, TA-BSA@CuS exhibited excellent photothermal property in the NIR-II region, which is ascribed to the TA-induced Cu defects and doped CuO. Moreover, the photothermal property of CuS improved the broad-spectrum free radical scavenging efficiency of TA-BSA@CuS, and its H2O2 clearance rate increased by 47.3% under NIR-II irradiation. Meanwhile, TA-BSA@CuS exhibited low biological toxicity and intracellular free radical scavenging ability. Moreover, the excellent photothermal property of TA-BSA@CuS endowed it with good antibacterial ability. Therefore, we expect that this work will pave the way for the synthesis of polyphenolic compounds and the improvement in their antioxidant capacity.

关键词： Nanoparticles

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Resilient Interactive Sensor-Independent-Update Fusion Navigation Method

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IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS 2022年第9期23卷 16433-16447页

作者： Meng, Qian Hsu, Li-Ta Southeast Univ Minist Educ Sch Instrument Sci & Engn Key Lab Microinertial Instrument & Adv Nav Techno Nanjing 210096 Peoples R China Hong Kong Polytech Univ Dept Aeronaut & Aviat Engn Hong Kong Peoples R China

To improve the robustness and reliability of multi-sensor navigation and reduce the uncertainties and complexity of sensor management in challenging environment, a resilient interactive sensor-independent-update (ISIU) method is proposed. Inspired by the interactive cooperation theory, the contributions can be divided into two aspects. Firstly the priority of trust of navigation sensors is introduced into the information fusion in the form of transition probability matrix defined by Markov chain. Secondly every observable sensor is integrated with the propagated system in an elemental filter with sensor-independent-update structure. The multi-sensor integration is implemented in state estimation domain enhanced by interactive information fusion rather than in measurement domain implemented in traditional filter method. The overall estimation is determined by the weighted sum of average from every filter estimate. This weight of every model is dynamic updated by the prior transition information and posterior model likelihood. The same independent structure is also applied to adopt new available sensor to realize plug-and-play navigation. The kinematic vehicle experiment in sub-urban and urban canyon environment verified the superiority of the proposed method. The ISIU method shows better accuracy and reliability compared to classical Kalman filters. The introduction of priority of sensors and decoupled measurement update process make it robust and insensitive to sensor measurement noise and outliers. The interactive sensor-independent-update structure has the natural function of fault detection and exclusion without additional operations. The effect of dynamic sensor selection is achieved in this processing. The proposed ISIU method is pretty suitable for resilient navigation in challenging environments.

关键词： Navigation Reliability Vehicle dynamics Monitoring Robustness Heuristic algorithms Estimation Interactive multi-model Kalman filter multi-sensor integration plug and play resilient navigation sensor selection

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