Wei Yu

Xi'an University of Technology

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Kian Ping Loh

National University of Singapore

Xiaoxu Zhao

Peking University

Jing Li

Chinese Academy of Sciences

Haomin Xu

National University of Singapore

Jiong Lu

National University of Singapore

Stephen J. Pennycook

National University of Singapore

Zhongxin Chen

Chinese University of Hong Kong, Shenzhen

Xing Li

National University of Singapore

Shibo Xi

Agency for Science, Technology and Research

Hai‐Sen Xu

Sun Yat-sen University

Cooperative Institutions

National University of Singapore

148

Chinese Academy of Sciences

Nanyang Technological University

University of Chinese Academy of Sciences

Nanjing University

Tianjin University

Central South University

Peking University

Northwestern Polytechnical University

Lanzhou University

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Dense‐Stacking Porous Conjugated Polymer as Reactive‐Type Host for High‐Performance Lithium Sulfur Batteries

Angewandte Chemie (2021)

Xiaowei Wang Yangyuchen Yang Chen Lai Runlai Li Haomin Xu

Abstract Commercialization of the lithium‐sulfur battery is hampered by bottlenecks like low sulfur loading, high cathode porosity, uncontrollable Li 2 S x deposition and sluggish kinetics of Li 2 S activation. Herein, we developed a densely stacked redox‐active hexaazatrinaphthylene (HATN) polymer with a surface area of 302 m 2 g −1 and a very high bulk density of ca. 1.60 g cm −3 . Uniquely, HATN polymer has a similar redox potential window to S, which facilitates the binding of Li 2 S x and its transformation chemistry within the bulky polymer host, leading to fast Li 2 S/S kinetics. The compact polymer/S electrode presents a high sulfur loading of ca. 15 mg s cm −2 (200‐μm thickness) with a low cathode porosity of 41 %. It delivers a high areal capacity of ca. 14 mAh cm −2 and good cycling stability (200 cycles) at electrolyte–sulfur (E/S) ratio of 5 μL mg s −1 . The assembled pouch cell delivers a cell‐level high energy density of 303 Wh kg −1 and 392 Wh L −1 .

10.1002/ange.202016240

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Citations (11)

Constant-power waterfilling: performance bound and low-complexity implementation

IEEE Transactions on Communications (2006)

Wei Yu J.M. Cioffi

In this letter, we investigate the performance of constant-power waterfilling algorithms for the intersymbol interference channel and for the independent identically distributed fading channel where a constant power level is used across a properly chosen subset of subchannels.A rigorous performance analysis that upper bounds the maximum difference between the achievable rate under constant-power waterfilling and that under true waterfilling is given.In particular, it is shown that for the Rayleigh fading channel, the spectral efficiency loss due to constant-power waterfilling is at most 0.266 b/s/Hz.Furthermore, the performance bound allows a very-low-complexity, logarithm-free, power-adaptation algorithm to be developed.Theoretical worst-case analysis and simulation show that the approximate waterfilling scheme is very close to the optimum.

Constant (computer programming)

10.1109/tcomm.2005.861678

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Citations (119)

From All-Triazine C3N3 Framework to Nitrogen-Doped Carbon Nanotubes: Efficient and Durable Trifunctional Electrocatalysts

Elements (2020)

Jian Zeng Zhongxin Chen Xiaoxu Zhao Wei Yu Shaofei Wu

Triazine

Carbon fibers

Source

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Citations (2)

Sliding Dynamics of Slide-Ring Polymers Based on the Bead-Spring Model

Chinese Journal of Polymer Science (2023)

Zhongqiang Xiong Wei Yu

Chain (unit)

10.1007/s10118-023-2967-6

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Citations (2)

Analysis and Research Regarding Characteristics of THz Receiver Noise Using Diode Parameter Error

Applied Mechanics and Materials (2014)

Da An Song Yan Gu Feng Lu Cheng Cheng Wan Wei Yu

In this paper, an analysis and study regarding the characteristics of THz receiver noise using diode parameter error are performed. For a sub-harmonic mixer designed based on this type of diode model. Finally, this type of mixer was adopted to build a 183 GHz receiver system . The special are study the influence of the diode model process error on the receiver system noise characteristics, based on theory and modeling. The results show that diode ideality factor ns change exerted the greatest influence on the noise factor of the front end of the receiver, as well as similar influence over bias junction capacitance Cj and bulk resistor Rs, and minimal influence over saturation current Is.

Noise temperature

Saturation current

10.4028/www.scientific.net/amm.513-517.2862

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Citations (0)

CCDC 906628: Experimental Crystal Structure Determination

The Cambridge Structural Database (2013)

Wei Yu Xiaoye Wang Jing Li Zhiting Li Yukun Yan

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/cczff2w

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Quantification of interfacial interaction related with adhesive membrane fouling by genetic algorithm back propagation (GABP) neural network

Journal of Colloid and Interface Science (2023)

Bowen Li Liguo Shen Ying Zhao Wei Yu Hongjun Lin

Membrane Fouling

10.1016/j.jcis.2023.02.030

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Citations (32)

Lattice‐Confined Single‐Atom Catalyst: Preparation, Application and Electron Regulation Mechanism

Small Methods (2024)

Ting Ma Haibo Li Yanyan Yu Kaixuan Wang Wei Yu

Lattice-confined single-atom catalyst (LC SAC), featuring exceptional activity, intriguing stability and prominent selectivity, has attracted extensive attention in the fields of various reactions (e.g., hydrogen evolution reaction (HER), oxygen evolution reaction (OER), oxygen reduction reaction (ORR), etc.). To design a "smart" LC SAC for catalytic applications, one must systematically comprehend updated advances in the preparation, the application, and especially the peculiar electron regulation mechanism of LC SAC. In this review, the specific preparation methods of LC SAC based on general coordination strategy are updated, and its applications in HER, OER, ORR, N

Lattice (music)

10.1002/smtd.202400530

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Citations (0)

CCDC 2193547: Experimental Crystal Structure Determination

The Cambridge Structural Database (2023)

Yuan Xu Jimei Yang Xingjiang Yang He Na Mingyuan Han

10.5517/ccdc.csd.cc2cmkl5

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Citations (0)

Activating Basal Planes of NiPS₃ for Hydrogen Evolution by Nonmetal Heteroatom Doping

Advanced Functional Materials (2020)

Jun Wang Xinzhe Li Bin Wei Rong Sun Wei Yu

Abstract NiPS 3 , one of the most promising catalysts among transition metal trichalcogenidophosphates (MTPs) in hydrogen evolution reaction (HER) electrocatalysis, is still inhibited by its unsatisfactory activity originating from its semiconducting nature and inert basal plane. Here, it is proposed, for the first time, to engineer the basal surface activity of NiPS 3 by nonmetal heteroatom doping, and predict that the degree to which the valance band of NiPS 3 is filled dominates not only the electrical conductivity of the catalyst, but also the strength of hydrogen adsorption at its surface. Direct experimental evidence is offered that in all the single nonmetal doping samples, C‐doped NiPS 3 exhibits the optimum activity owing to its moderate filled state of valance band and that C, N codoping even shows Pt‐like activity with an ultralow overpotential of 53.2 mV to afford 10 mA cm −2 current density and a high exchange current density of 0.7 mA cm −2 in 1 m KOH. The findings that less valance electrons of dopants than substitutional atoms are of pivotal importance for improving HER activity of NiPS 3 catalyst pave the way for readily designing novel MTPs of ever high performance to replace the incumbent Pt‐based catalysts.

Nonmetal

Overpotential

Heteroatom

Exchange current density

10.1002/adfm.201908708

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Citations (108)