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Controlled Anodic Decomposition Pathway of Supramolecular Lithium Borate for Rationally Tuned Interphase Chemistry

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 2025年第19期64卷 e202500425页

作者： Zhou, Haiyu Hou, Wenhui Zhu, Da Zhou, Pan Peng, xuwen liu, Zhi Yan, Shuaishuai Lu, Yang Ou, Yu liu, Fengxiang Xia, Yingchun liu, Hao Cao, Qingbin Song, Xuan Guo, Decai Xu, Hong liu, Kai Tsinghua Univ Dept Chem Engn State Key Lab Chem Engn Beijing 100084 Peoples R China Tsinghua Univ Inst Nucl & New Energy Technol Beijing 100084 Peoples R China SINOPEC Dalian Res Inst Petr & Petrochem 96 Nankai RdTieshan St Dalian 116045 Liaoning Peoples R China

The rational tailoring and molecular-level engineering of stable cathode-electrolyte interphases (CEIs) is paramount to advancing the performance of next-generation high-energy, layered nickel-rich oxide-based lithium metal batteries. However, developing well-tailored electrolyte additives with rationally controlled interfacial chemistry remains highly challenging. Here, two lithium borates: lithium (2-methoxy-15-crown-5)trifluoroborate (C-LiMCFB) and lithium (15-methoxy-2,5,8,11,14-pentaoxahexadecan)trifluoroborate (L-LiMCFB), incorporating cyclic 15-crown-5 (15C5) and linear pentaethylene glycol monomethyl ether (PEGME) as respective host groups tethered to the boron center are designed and synthesized. In C-LiMCFB, the supramolecular polydentate chelation/de-chelation of the 15C5 with Li+ can sequentially deactivate/activate the anodic decomposition of the C & horbar;O bonds, therefore leading to the controlled cleavage pathway of B & horbar;O and C & horbar;O bonds. The controlled interfacial chemistry leads to the formation of a uniform CEI layer, rich in lithium boron-oxygen clusters interwoven with LiF, on the NCM811 surface. This novel CEI configuration demonstrates an exceptional balance of mechanical robustness, adhesiveness, and toughness, providing highly desirable protection for the NCM811 cathode. The discovery of these novel supramolecular boron-based lithium salts not only unlocks supramolecular chemistry for rational electrolyte tuning but also provides a deeper understanding of the CEI formation mechanism in high-energy lithium metal batteries.

关键词： Battery electrolytes Energy storage Lithium metal batteries Supramolecular chemistry

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A universal strategy for fast,scalable,and aqueous synthesis of multicomponent palladium alloy ultrathin nanowires

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Science China Chemistry 2021年第2期64卷 245-252页

作者： Hao Lv xuwen Guo Lizhi Sun Dongdong Xu Ben liu College of Chemistry Sichuan UniversityChengdu 610064China Jiangsu Key Laboratory of New Power Batteries Jiangsu Collaborative Innovation Center of Biomedical Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing 210023China

Noble metal alloy nanowires(NWs)with ultrathin diameters(2–3 nm)and precisely controllable elemental compositions have attracted dramatically growing attention for(electro)*** numerous achievements in past two decades,noble metal alloy NWs are mostly synthesized with the traditional oil-phase methods that suffer from some undesirable ***,we report a general strategy for fast,scalable,and aqueous synthesis of multicomponent Pd-based alloy ultrathin NWs with an average diameter of 2.6 nm,ranging from bimetallic PdM(PdFe,PdCo,PdNi,PdCu,PdZn,PdRu,PdRh,PdAg,PdCd,PdIr,PdPt,PdAu)and binary PdS/PdP NWs,to trimetallic PdM1M2 NWs(PdAuCu,PdCoNi,PdCuZn,PdCuNi,PdAgCu,PdAuCu,PdRuAg,PdAuRu,and PdPtAu),and to tetrametallic PdM1M2M3 NWs(PdAuAgCu,PdCoCuNi,PdAuCuNi,PdPtAuCu,and PdIrPtAu).The key to the success of this aqueous synthesis is the utilization of N2H4 as the extremely strong reducing agent that directs the synchronous reduction and anisotropic nucleation growth of multicomponent Pd alloy NWs along nanoconfined columnar phase assembled with amphiphilic dioctadecyldimethylammonium ***-resultant Pd-based alloy ultrathin NWs exhibit multiple structural and compositional synergies,which remarkably optimize the removal of poisoning ethoxy intermediates and thus improve electrocatalytic performance towards ethanol oxidation reaction(EOR).Among them,tetrametallic PdAuCuNi alloy ultrathin NWs hold a high EOR activity of 5.14 A mg-1 Pd and a low activation energy of 13.1 kJ mol^-1,both of which are much better than its counterpart catalysts alloyed with less *** work represents an important advance in precise aqueous synthesis of multicomponent noble metal alloy ultrathin NWs as the high-performance electrocatalysts for various targeted applications.

关键词： ultrathin nanowires multicomponent alloys palladium synthetic chemistry ethanol oxidation reaction

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Dynamic design method of digital twin process model driven by knowledge-evolution machining features

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INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH 2022年第7期60卷 2312-2330页

作者： liu, Jinfeng Zhao, Peng Jing, xuwen Cao, Xuwu Sheng, Sushan Zhou, Honggen liu, Xiaojun Feng, Feng Jiangsu Univ Sci & Technol Sch Mech Engn Zhenjiang 212003 Jiangsu Peoples R China Southeast Univ Sch Mech Engn Nanjing Peoples R China Shaanxi Diesel Engine Heavy Ind Co Ltd Xingping Peoples R China

Machining plan is the core of guiding manufacturing production and is regarded as one of the keys to ensure the quality of product processing. Existing process design methods are inefficient to quickly handle the machining plan changed induced by the unpredictable events in real-time production. It inevitably causes time and economic losses for the enterprise. In order to express the evolutionary characteristics of product processing, the construction method of digital twin process model (DTPM) is proposed based on the knowledge-evolution machining features. Three key technologies include correlation structure of process knowledge, expression method of the evolution geometric features and the association mechanism between two are solved. On this basis, the construction framework of DTPM is illustrated. Then, the organisation and management mechanism of multi-source heterogeneous data is discussed in detail. At last, a case study of the complex machined part is researched, the results show that the processing time reduced by about 7% and the processing stability improved by 40%. Meanwhile, the implementation scheme, application process and effect of this case are described in detail to provide reference for enterprises.

关键词： Digital twin process knowledge machining features dynamic evolution

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Aquaponics model can provide better productivity: Microorganisms affect the growth and health of tilapia

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AQUACULTURE REPORTS 2025年 40卷

作者： Fan, Dingyue Xu, Huimin Meng, Shunlong Fan, Limin Song, Chao Qiu, Liping Li, Dandan Fang, Longxiang liu, Zhuping Bing, xuwen Shanghai Ocean Univ Coll Fisheries & Life Sci Shanghai Peoples R China Chinese Acad Fishery Sci Freshwater Fisheries Res Ctr Sci Observing & Expt Stn Fishery Resources & Envir Wuxi 214081 Peoples R China

Aquaponics is a novel ecological agricultural strategy that combines aquaculture and hydroponic cultivation. The relationships between fish immunological and digestive functions, water quality, and bacterial populations were not well understood. This study aims to investigate the effects of aquaponics on aquaculture water quality, fish growth performance, and fish health, as well as exploring the roles of microbial taxa in these processes. In the present study, three aquaponics systems were established, and three same sized recirculating aquaculture systems (RAS) were constructed to act as controls. To evaluate bacterial community diversity and compositions across different microhabitats in the two systems, we used amplicon-based high-throughput sequencing technique targeting the 16S rRNA gene. In aquaponics, fish had a much greater nitrogen utilization rate, weight gain rate (WGR), feed conversion ratio (FCR), and specific growth rate (SGR) than in controls. The activities of alkaline phosphatase (AKP), acid phosphatase (ACP), lysozyme (LYS), lipase (LPS), and trypsin (TRP) in tissues, all of which are indicators of fish health, were significantly greater in aquaponics than in controls. Aquaponics effectively lowered chlorophyll-a levels while having little effect on other water quality metrics, indicating their potential for better algae control. Water quality measures such as dissolved organic carbon, chlorophyll-a, dissolved oxygen, and ammonia nitrogen had a substantial impact on the fish's immunological and digestive capabilities. In terms of microbial influence, particular gut bacteria-such as the bacterial orders Pseudomonadales, Caulobacterales, Defluviicoccales, Exiguobacterales, and Gemmatales-have been identified as influencing various functions in fish. Among these bacterial orders, we found that Pseudomonadales and Exiguobacterales were more abundant in aquaponics than control systems. This study demonstrated that aquaponics can increase fish health an

关键词： Aquaponics Tilapia growth and health Water quality Microbial community

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Leather Defect Detection Algorithm Based on an Improved YOLOv5s 7

Leather Defect Detection Algorithm Based on an Improved YOLO...

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7th International Conference on Pattern Recognition and Artificial Intelligence, PRAI 2024

作者： He, xuwen Li, Hao liu, Yifan Song, Rui Zhao, Yuchen Ou, Xiao School of Mathematics and Computer Science Wuhan Polytechnic University Wuhan China

ISBN: (纸本)9798350350890

In the field of intelligent manufacturing, the realization of efficient and accurate automated surface defect detection is particularly critical for enhancing product quality, especially in the leather industry, which holds a significant position in global trade. Traditional defect detection methods encounter challenges in handling complex scenes and identifying minute defects. However, the advent of deep learning technologies has provided a new pathway to address these issues. This paper is dedicated to innovative research on the precise localization and detailed classification of leather surface defects through the enhancement of deep learning models, aiming to overcome the limitations of existing technologies and improve the accuracy and efficiency of detection. By extending the YOLOv5s model, this study has developed the CMR-YOLO algorithm. This algorithm integrates the Channel Attention mechanism (CA), an improved Multi-Dimensional Precision Intersection over Union (MPDIoU), and the Cross Stage Partial Residual feature enhancement module (C3R). These enhancements not only improve the classification accuracy but also bolster the model's stability and robustness in complex scenes. Through the comprehensive application of these techniques, the CMR-YOLO algorithm demonstrates improved performance in categorizing different types of leather defects, particularly effective in handling diverse defect characteristics and accurately classifying various defects. Compared to the traditional YOLOv5s, the CMR-YOLO algorithm also exhibits improved accuracy in defect classification, with the mAP50 increasing from 62.5% to 79.5%, effectively enhancing the overall performance of leather defect detection. These research outcomes not only achieve technological breakthroughs but also provide significant technical support for quality control and intelligent manufacturing in the leather goods industry. © 2024 IEEE.

关键词： Leather

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Interphasial Chemistry Design for Seamless Lithium Deposition in Anode-Free Lithium Metal Batteries

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ADVANCED MATERIALS 2025年

作者： Song, Xuan liu, Cheng Zhang, Aiyuan Ding, Li Zeng, Tianyou Lu, Yang Ou, Yu Hou, Wenhui Zhou, Pan Cao, Qingbin Yan, Shuaishuai liu, Zhi Peng, xuwen Zhou, Haiyu Xia, Yingchun Zhang, Weili liu, Hao liu, Kai Tsinghua Univ Dept Chem Engn Beijing 100084 Peoples R China China Acad Space Technol Beijing 100094 Peoples R China Beijing Mingyuan Space Elect Informat Technol Co L Beijing 100080 Peoples R China Tsinghua Univ Hefei Inst Publ Safety Res Hefei 230601 Peoples R China

Anode-free lithium metal batteries (AFLMBs) are promising due to ultrahigh energy density, reduced manufacturing costs, and enhanced safety through active lithium elimination. However, their practical implementation remains challenged by unstable electrode-electrolyte interfaces and the resulting rapid active species depletion. Herein, an ultrathin ion-conducting membrane (ICM) is designed, featuring uniformly distributed rigid benzenesulfonimide anionic groups and flexible lithiophilic groups containing ether oxygen groups. The constrained benzenesulfonimide anions enable exceptional charge separation and reduced spatial resistance, boosting lithium-ion mobility, while the integrated lithophilic network directs lateral lithium deposition through ionic nanochannels. This ICM layer effectively promotes the enrichment of anions at the interface and constructs stable anion-derived solid electrolyte interphases (SEI). Meanwhile, ICM layers with electron-insulating and ion-conducting properties can further prevent side reactions, and suppress dendritic Li growth acting as a natural shield, resulting in seamless lithium deposition. Specifically, the Li||Cu coin cells with ICM achieve 99.82% Coulombic efficiency. The AFLMBs assembled with ICM-coated copper foil (ICM Cu) and NCM811 deliver an energy density of 495 Wh kg-1 with 80.72% capacity retention after 100 cycles. The interphasial chemistry design strategy provides insights into the precise interfacial engineering to realize high-performance, high-safety battery systems and facilitates their development for practical applications.

关键词： anode-free lithium metal batteries dendrite suppression interphasial chemistry ion-conducting membranes solid electrolyte interphases

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A Compact Optically Pumped Cesium Beam Clock with a Differential Detection Scheme 37

A Compact Optically Pumped Cesium Beam Clock with a Differen...

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37th European Frequency and Time Forum, EFTF 2024

作者： Li, Chao Sun, Fuyu Hu, xuwen liu, Jie Li, Xiaofeng Zhang, Shougang National Time Service Center Chinese Academy of Sciences Xi'an China Chinese Academy of Sciences Key Laboratory of Time Reference and Applications Xi'an China

ISBN: (纸本)9798350354270

Compact optically pumped cesium beam clocks have become a focus in cesium clock research due to their high atomic utilization and excellent short-term frequency stability. However, stray light noise, one of the main noise sources, limits the stability improvement. In this paper, we present a compact optically pumped cesium clock that uses differential detection to reduce the impact of stray light on clock performance. It incorporates an additional fluorescence collector to capture stray light during detection and subtract it from the clock transition signal, effectively reducing stray light level. Consequently, this scheme significantly enhances the signal-to-noise ratio, improving the short-term frequency stability of the compact optically pumped cesium clock. © 2024 IEEE.

关键词： Frequency stability

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CircFBLN2 regulates duck myoblast proliferation and differentiation through miR-22-5p and MEF2C interaction

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POULTRY SCIENCE 2025年第5期104卷 105063页

作者： liu, Shuibing Wu, Jintao Jiang, Hongxia Zhou, Ya'nan Huang, xuwen Wang, Yuxiang Xie, Zhanbin Liao, Zurong Ding, Zhenxvan liu, Jing Hu, Xiaolong Mao, Huirong liu, Sanfeng Chen, Biao Jiangxi Agr Univ Coll Anim Sci & Technol Nanchang 330045 Jiangxi Peoples R China South China Agr Univ Coll Anim Sci Guangzhou 510642 Guangdong Peoples R China Jiangxi Agr Univ Poultry Inst Nanchang 330045 Peoples R China

The growth and development of duck skeletal muscle significantly affect duck meat production, making it essential to understand the molecular mechanisms underlying these processes. Circular RNAs (circRNAs) and microRNAs (miRNAs) are identified in many species and play essential roles in the regulation of myogenic processes;however, research on circRNAs and miRNAs involved in the duck skeletal muscle development is limited. In prior whole-transcriptome RNA sequencing study, we identified differential expression of miR-22-5p and the novel circular RNA circFBLN2, which arises from the second exon of the FBLN2 gene, in duck primary myoblasts (DPMs). In this study, we confirmed the circular structure of circFBLN2 and explored its expression patterns and functional implications in myogenesis. To elucidate the function of circFBLN2 in the myogenic processes of duck, we conducted experiments involving both the silencing and overexpression of circFBLN2 in DPMs. Our findings indicated that circFBLN2 inhibits DPM proliferation while promoting their differentiation. Conversely, when miR-22-5p was silenced and overexpressed, it exhibited opposing effects by promoting the proliferation of DPMs and inhibiting their differentiation. These results suggest a complex dynamic interplay between circFBLN2 and miR-22-5p in the regulation of DPMs proliferation and differentiation. Additionally, our results revealed that both circFBLN2 and myocyte enhancer factor 2 C (MEF2C) act as sponges for miR-22-5p, as demonstrated by binding predictions and dual-luciferase reporter assays. These results offer novel perspectives on the regulatory pathways underlying the duck embryonic skeletal muscle development, underscoring the pivotal function of circFBLN2 in the regulation of miR-22-5p expression. This research deepens our comprehension of the molecular underpinnings of avian myogenesis, potentially paving the way for more effective approaches to bolster growth and development of livestock.

关键词： Duck skeletal muscle circFBLN2 miR-22-5p MEF2C

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一种光伏系统的整体线性化模型

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湖北民族大学学报（自然科学版） 2024年第4期42卷 533-538页

作者：陈金彪李绍武刘绪文郭炜豪张挺毅湖北民族大学智能科学与工程学院湖北恩施445000

为解决光伏系统的非线性特性问题,对光伏系统进行控制策略设计和优化,提出一种光伏系统整体线性化建模方法。首先,根据光伏系统中各组件的工作模式以及工作状态,通过状态空间平均法建立空间状态方程,推导出各部件的线性状态数学模型。接... 详细信息

为解决光伏系统的非线性特性问题,对光伏系统进行控制策略设计和优化,提出一种光伏系统整体线性化建模方法。首先,根据光伏系统中各组件的工作模式以及工作状态,通过状态空间平均法建立空间状态方程,推导出各部件的线性状态数学模型。接着,将各部件的数学模型相结合,得到光伏系统的整体线性化数学模型。然后,通过Routh逼近法对整体线性化模型进行降阶处理,获得简化光伏系统整体线性化模型。最后,利用Matlab/Simulink仿真平台获取仿真结果。结果表明,光伏系统整体线性化模型具有可行性和实用性;当辐照度变化时,系统的输出电压在辐照度变化点均能在0.02 s内恢复稳态,具有一定的调节能力、准确性及抗干扰性;光伏电池模型输出与实际输出的误差小于5%。该方法可为经典控制理论对光伏系统的线性控制及优化提供理论基础和参考价值。

关键词：光伏系统状态空间法 DC-DC变换器 DC-AC变换器整体线性化模型 Routh逼近法

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A highly sensitive one-step nanobody-based immunoassay to specifically detect antibodies against fowl adenovirus serotype 4

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POULTRY SCIENCE 2025年第4期104卷 104970页

作者： Ji, Pinpin Zhang, Hao Xiri, Yangzong Li, Ziling liu, Zhixiang Dan, Miao Li, Xiaoxuan Sun, xuwen Zhao, Qin Sun, Yani Northwest A&F Univ Coll Vet Med Dept Prevent Vet Med Yangling 712100 Shaanxi Peoples R China Minist Agr Sci Observing & Expt Stn Vet Pharmacol & Diagnost Yangling 712100 Shaanxi Peoples R China

Hepatitis-hydropericardium syndrome, caused by fowl adenovirus serotype 4 (FAdV-4), has resulted in significant economic damage to the poultry industry. To monitor viral exposure and vaccine efficacy, some traditional antibody-based immunoassays have been developed for detecting anti-FAdV-4 antibodies. However, these assays have some drawbacks including multi-step operations and higher production cost. Recently, nanobodies are regarded as a promising tool for developing immunoassays. In the study, 23 nanobodies against FAdV-4 were screened and expressed with horseradish peroxidase (HRP) in the HEK293T cells. Then, the FAdV-4-Nb28-HRP fusion protein was selected for developing competitive enzyme-linked immunoassays (cELISA) to detect antiFAdV-4 antibodies in the chicken sera. The optimal concentrations and dilutions for the coating antigen, fusion protein and testing sera were determined to be 400 ng/well, 1:80 and 1:20, respectively. After the coated plates were vacuumized and stored, the operation of cELISA to detect clinical chicken sera was only one-step and the full time was 75 min. The cELISA also exhibited high sensitivity, specificity, reproducibility and good agreement with the commercial ELISA kit. When the sequential sera from the challenged chickens were tested, the cELISA showed superior sensitivity compared with the commercial ELISA kit. Moreover, epitope mapping revealed that the nanobody specifically recognized the sites GLN235 ASN236 SER238 of the fiber-1 protein, highly conserved among different FAdV-4 isolates and different from the FAdV-1 and-8. The results indicated that cELISA can specifically detect anti-FAdV-4 antibodies. Collectively, the developed one-step nanobody-based cELISA is an ideal method for epidemiological investigation and vaccine immune evaluation of FAdV-4.

关键词： Nanobody One-step competitive ELISA FAdV-4 antibodies Fiber-1 protein

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