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boosting cell performance of lini_(0.8)Co_(0.1)Mn_(0.1)O_(2) cathode material via structure design

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Journal of Energy Chemistry 2021年第4期30卷 114-123页

作者： lin-bo tang Yang Liu Han-xin Wei Cheng Yan Zhen-jiang He Yun-jiao Li Jun-chao Zheng School of Metallurgy and Environment Central South UniversityChangsha 410083HunanChina National Engineering Laboratory for High Efficiency Recovery of Refractory Nonferrous Metals Central South UniversityChangsha 410083HunanChina Engineering Research Center of the Ministry of Education for Advanced Battery Materials Central South UniversityChangsha 410083HunanChina School of Mechanical Medical and Process EngineeringQueensland University of TechnologyBrisbaneQueensland 4001Australia

Ni-rich cathodes exhibit appealing properties,such as high capacity density,low cost,and prominent energy ***,the inferior ionic conductivity and bulk structural degradation become bottlenecks for Ni-rich cathodes and severely limit their commercial *** coating and doping methods suffer fatal drawbacks in functioning as a unit and cannot radically promote material performance to meet the needs of Li-ion batteries(LIBs).Herein,we successfully devised an ingenious and facile synthetic method to establish Ni-rich oxides with a La_(2)Zr_(2)O_(7) coating and Zr *** coating layer improves the ion diffusion kinetics and enhances Li-ion transportation while Zr doping effectively suppresses the phase transition of lini_(0.8)Co_(0.1)Mn_(0.1)O_(2) *** to the synergetic effect of Zr doping and La_(2)Zr_(2)O_(7) coating,the modified material shows prominent initial discharge capacity of 184.7 m Ah g^(-1) at 5℃ and maintains 177.5 m Ah g^(-1) after 100 cycles at 1℃.Overall,the proposed feasible electrode design method can have a far-reaching impact on further fabrication of advanced cathodes for high-performance LIBs.

关键词： Lithium ion battery Ni-rich material La_(2)Zr_(2)O_(7)coating Zr doping Electrochemical performance

Recent advances in interfacial modification of zinc anode for aqueous rechargeable zinc ion batteries

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Journal of Energy Chemistry 2023年第8期83卷 287-303,I0009页

作者： Qing Wen Hao Fu Ru-de Cui He-Zhang Chen Rui-Han Ji lin-bo tang Cheng Yan Jing Mao Ke-Hua Dai Xia-Hui Zhang Jun-Chao Zheng School of Metallurgy and Environment Central South UniversityChangsha 410083HunanChina Engineering Research Center of the Ministry of Education for Advanced Battery Materials Central South UniversityChangsha 410083HunanChina School of Chemistry and Chemical Engineering Hunan University of Science and TechnologyXiangtan 411201HunanChina School of Mechanical Medical and Process EngineeringQueensland University of TechnologyBrisbaneQueensland 4001Australia School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001HenanChina College of Chemistry Tianjin Normal UniversityTianjin 300387China School of Mechanical and Materials Engineering Washington State UniversityPullman 99164WashingtonUnited States

To tackle energy crisis and achieve sustainable development, aqueous rechargeable zinc ion batteries have gained widespread attention in large-scale energy storage for their low cost, high safety, high theoretical capacity, and environmental compatibility in recent years. However, zinc anode in aqueous zinc ion batteries is still facing several challenges such as dendrite growth and side reactions(e.g., hydrogen evolution), which cause poor reversibility and the failure of batteries. To address these issues, interfacial modification of Zn anodes has received great attention by tuning the interaction between the anode and the electrolyte. Herein, we present recent advances in the interfacial modification of zinc anode in this review. Besides, the challenges of reported approaches of interfacial modification are also ***, we provide an outlook for the exploration of novel zinc anode for aqueous zinc ion *** hope that this review will be helpful in designing and fabricating dendrite-free and hydrogenevolution-free Zn anodes and promoting the practical application of aqueous rechargeable zinc ion batteries.

关键词： Zinc ion batteries Zinc anode Interfacial modification Functional coating

Single-Crystal Nickel-Based Cathodes:Fundamentals and Recent Advances

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Electrochemical Energy Reviews 2022年第4期5卷 63-103页

作者： Shi-jie Lu lin-bo tang Han-xin Wei Ying-de Huang Cheng Yan Zhen-jiang He Yun-jiao Li Jing Mao Kehua Dai Jun-chao Zheng School of Metallurgy and Environment Central South UniversityChangsha 410083HunanChina National Engineering Laboratory for High Efficiency Recovery of Refractory Nonferrous Metals Central South UniversityChangsha 410083HunanChina Engineering Research Center of the Ministry of Education for Advanced Battery Materials Central South UniversityChangsha 410083HunanChina School of Mechanical Medical and Process EngineeringQueensland University of TechnologyBrisbaneQLD 4001Australia School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001HenanChina College of Chemistry Tianjin Normal UniversityTianjin 300387China

Lithium-ion batteries(LIBs)represent the most promising choice for meeting the ever-growing demand of society for various electric applications,such as electric transportation,portable electronics,and grid ***-rich layered oxides have largely replaced LiCoO_(2)in commercial batteries because of their low cost,high energy density,and good *** nickel-based oxide particles,usually called polycrystal materials,are composed of microsized primary ***,polycrystal particles tend to suffer from pulverization and severe side reactions along grain boundaries during *** phenomena accelerate cell ***-crystal materials,which exhibit robust mechanical strength and a high surface area,have great potential to address the challenges that hinder their polycrystal counterparts.A comprehensive understanding of the growing body of research related to single-crystal materials is imperative to improve the performance of cathodes in *** review highlights origins,recent developments,challenges,and opportunities for single-crystal layered oxide *** synthesis science behind single-crystal materials and comparative studies between single-crystal and polycrystal materials are discussed in *** techniques and facilities are also reviewed in combination with our group’s experiences in single-crystal *** development should focus on facile production with strong control of the particle size and distribution,structural defects,and impurities to fully reap the benefits of single-crystal materials.

关键词： Lithium-ion battery Cathode materials Single crystal Nickel-based layered oxides

Revealing proton-coupled exchange mechanism in aqueous ion-exchange synthesis of nickel-rich layered cathodes for lithium-ion batteries

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eScience 2024年第4期4卷 103-109页

作者： Yu-Hong Luo Qing-lin Pan Han-Xin Wei Ying-De Huang Pei-Yao Li lin-bo tang Zhen-Yu Wang Cheng Yan Jing Mao Ke-Hua Dai Qing Wu Xia-Hui Zhang Jun-Chao Zheng School of Materials Science and Engineering Central South UniversityChangsha 410083China School of Metallurgy and Environment Central South UniversityChangsha 410083China Engineering Research Center of the Ministry of Education for Advanced Battery Materials Central South UniversityChangsha 410083China School of Mechanical Medical and Process EngineeringQueensland University of TechnologyBrisbane 4001Australia School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China College of Chemistry Tianjin Normal UniversityTianjin 300387China School of Information and Network Center Central South University Changsha 410083China

Ion exchange is a promising synthetic method for alleviating severe cation mixing in traditional layered oxide materials for lithium-ion batteries,leading to enhanced structural ***,the underlying mechanisms of ion exchange are still not fully *** a fundamental study of the ion-exchange mechanism is needed for achieving the controllable synthesis of layered oxides with a stable ***,we thoroughly unearth the underlying mechanism that triggers the ion exchange of Ni-rich materials in aqueous solutions by examining time-resolved structural evolution combined with theoretical *** results reveal that the reaction pathway of ion exchange can be divided into two steps:protonation and *** proton is the key to achieving charge balance in the ion exchange process,as revealed by X-ray adsorption spectroscopy and inductive coupled plasma *** addition,the intermediate product shows high lattice distortion during ion exchange,but it ends up with a most stable product with high lattice *** apparent discrepancies in lattice energy between materials before and after ion exchange emphasize the importance of synthetic design in structural *** work provides new insights into the ion-exchange synthesis of Ni-rich oxide materials,which advances the development of cathode materials for high-performance lithium-ion batteries.

关键词： Ion exchange Reaction mechanisms Proton-coupledNi-rich oxides Protonation Lithiation Lithium-ion batteries

Wafer‑Scale Vertical 1D GaN Nanorods/2D MoS_(2)/PEDOT:PSS for Piezophototronic Effect‑Enhanced Self‑Powered Flexible Photodetectors

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Nano-Micro Letters 2025年第3期17卷 102-116页

作者： Xin tang Hongsheng Jiang Zhengliang lin Xuan Wang Wenliang Wang Guoqiang Li State Key Laboratory of Luminescent Materials and Devices South China University of TechnologyGuangzhou 510640People’s Republic of China Department of Electronic Materials School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510640People’s Republic of China

van der Waals(vdW)heterostructures constructed by lowdimensional(0D,1D,and 2D)materials are emerging as one of the most appealing systems in next-generation flexible ***,hand-stacked vdW-type photodetectors are not compatible with large-areaarray fabrication and show unimpressive performance in self-powered ***,vertical 1D GaN nanorods arrays(NRAs)/2D MoS_(2)/PEDOT:PSS in wafer scale have been proposed for self-powered flexible photodetectors arrays *** as-integrated device without external bias under weak UV illumination exhibits a competitive responsivity of 1.47 A W^(−1)and a high detectivity of 1.2×10^(11)Jones,as well as a fast response speed of 54/71μs,thanks to the strong light absorption of GaN NRAs and the efficient photogenerated carrier separation in type-II ***,the strain-tunable photodetection performances of device have been ***,the device at−0.78%strain and zero bias reveals a significantly enhanced photoresponse with a responsivity of 2.47 A W^(−1),a detectivity of 2.6×10^(11)Jones,and response times of 40/45μs,which are superior to the state-of-the-art self-powered flexible *** work presents a valuable avenue to prepare tunable vdWs heterostructures for self-powered flexible photodetection,which performs well in flexible sensors.

关键词： Vertical nanorod arrays van der Waals heterostructure Piezophototronic effect Self-powered photodetection Flexible sensors

Dispatchable Capability of Aggregated Electric Vehicle Charging in Distribution Systems

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Energy Engineering 2025年第1期122卷 129-152页

作者： ShiqianWang bo Liu Yuanpeng Hua Qiuyan Li Binhua tang Jianshu Zhou Yue Xiang Economic and Technology Research Institute State Grid Henan Electric Power CompanyZhengzhou450052China College of Electrical Engineering Sichuan UniversityChengdu610065China

This paper introduces a method for modeling the entire aggregated electric vehicle(EV)charging process and analyzing its dispatchable *** methodology involves developing a model for aggregated EV charging at the charging station level,estimating its physical dispatchable capability,determining its economic dispatchable capability under economic incentives,modeling its participation in the grid,and investigating the effects of different scenarios and EV penetration on the aggregated load dispatch and dispatchable *** results indicate that using economic dispatchable capability reduces charging prices by 9.7%compared to physical dispatchable capability and 9.3%compared to disorderly ***,the peak-to-valley difference is reduced by 64.6%when applying economic dispatchable capability with 20%EV penetration and residential base load,compared to disorderly charging.

关键词： Aggregated charging dispatchable capability peak shaving and valley filling the economics of charging demand response

The potential mechanism and clinical application value of remote ischemic conditioning in stroke

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Neural Regeneration Research 2025年第6期20卷 1613-1627页

作者： Yajun Zhu Xiaoguo Li Xingwei Lei Liuyang tang Daochen Wen bo Zeng Xiaofeng Zhang Zichao Huang Zongduo Guo The First Affiliated Hospital of Chongqing Medical University ChongqingChina

Some studies have confirmed the neuroprotective effect of remote ischemic conditioning against stroke. Although numerous animal researches have shown that the neuroprotective effect of remote ischemic conditioning may be related to neuroinflammation, cellular immunity, apoptosis, and autophagy, the exact underlying molecular mechanisms are unclear. This review summarizes the current status of different types of remote ischemic conditioning methods in animal and clinical studies and analyzes their commonalities and differences in neuroprotective mechanisms and signaling pathways. Remote ischemic conditioning has emerged as a potential therapeutic approach for improving stroke-induced brain injury owing to its simplicity, non-invasiveness, safety, and patient tolerability. Different forms of remote ischemic conditioning exhibit distinct intervention patterns, timing, and application range. Mechanistically, remote ischemic conditioning can exert neuroprotective effects by activating the Notch1/phosphatidylinositol 3-kinase/Akt signaling pathway, improving cerebral perfusion, suppressing neuroinflammation, inhibiting cell apoptosis, activating autophagy, and promoting neural regeneration. While remote ischemic conditioning has shown potential in improving stroke outcomes, its full clinical translation has not yet been achieved.

关键词： Akt apoptosis autophagy cerebral perfusion cerebral vascular stenosis clinical transformation hemorrhagic stroke ischemic stroke neuroinflammation neuroprotection Notch1 PI3K remote ischemic conditioning stroke

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多线程计算模型、体系结构与编译技术

计算机科学 2003年第3期30卷 1-4页

作者：林海波汤志忠清华大学计算机科学与技术系北京100084

Multithreading has been proposed as an efficient computing model for improving parallelism. It combinesadvantages of both dataflow architecture and von Neumann architecture,leading to high performance and ***-state-of-the-art multithreaded computing model includes Blocking thread and Non-blocking thread, the corre-sponded multithreaded architecting can be classified as Multiple Context Processor and Hybrid Architecture. Threadpartitioning is one of the most important compiling issues in multithreaded computing. The idea of multithreading willbe developed further on the move of architecture,compiling technique,and operating system.

关键词：多线程计算模型体系结构编译技术计算机

基于NAS Benchmarks的ORC性能测试

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计算机科学 2003年第3期30卷 141-145页

作者：林海波汤志忠清华大学计算机科学与技术系北京100084

Itanium is the first generation product processor based on IA-64 architecture. ORC(Open Research Compil-er )provides an open source IPF(Itanium Processor Family)research compiler infrastructure. We have compiled andrun NAS Benchmarks on the Itanium machine. This paper briefly describes the performance of orcc, sgicc and gcc inthe following 3 ways: execution time, compilation time, and executable file size. The results show that orcc has near-ly the same performance as sgicc, which is 2 fold faster over gcc in the aspect of execution time. We also find that evenwith the best-optimized program, the utilization ratio of process resources is no more that 70%.

关键词： NASBenchmarks ORC 性能测试安腾处理器指令级并行性体系结构