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In situ polymerization of poly(3,4-ethylenedioxythiophene)protective layer towards stable zinc anode

Nano Research 2025年第1期18卷 382-394页

作者： Debin Luo Peng Zhou Xiaowei Lv Panpan sun Xiaohua sun Hewei Zhao College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang 443002China Hubei Three Gorges Laboratory Yichang 443007China School of Chemistry Beihang UniversityBeijing 100191China

Aqueous zinc-ion devices are considered promising candidates for energy storage due to their high safety,low cost and relatively high energy ***,the dendrite growth,hydrogen evolution reaction(HER)and corrosion of the zinc anode significantly limit the development of Zn-ion ***,an inexpensive poly(3,4-ethylenedioxythiophene)(PEDOT)protective layer was constructed in situ on the Zn surface using electropolymerization to suppress dendrite growth and side reactions,thereby enhancing the reversibility of *** and theoretical calculations revealed that this hydrophilic protective layer promotes the desolvation process of hydrated Zn^(2+)and facilitates the transport of zinc ions,thus improving the thermodynamic and kinetic properties of Zn^(2+)deposition and inhibiting interfacial side ***,the optimized PEDOT@Zn symmetric battery exhibited a cycling stability exceeding 1250 h at 0.5 mA·cm^(-2)and 0.25 mAh·cm^(-2),with a significantly reduced overpotential(from 91.8 to 35 mV).With the assistance of the PEDOT protective layer,the PEDOT@Zn//Cu battery maintained approximately 99.5%Coulombic efficiency after 450 ***-situ scanning electron microscopy(SEM)and in situ optical microscopy characterizations further confirmed that the PEDOT protective layer can effectively suppress the growth of zinc ***,the Zn-ion capacitors assembled by the PEDOT@Zn and activated carbon also demonstrated outstanding cycling stability.

关键词： zinc-ion devices zinc anode poly(3 4-ethylenedioxythiophene)(PEDOT) dendrite desolvation process

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Microstructure and Wear/corrosion Resistance of Stainless Steel Laser-alloyed with Mn+W2C, Mn+NiWC and Mn+SiC

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期 283-294页

作者：周瑞 DIAO Xiaogang sun Yixin School of Metallurgical Engineering Jiangsu University of Science and Technology CITIC Heavy Cast Iron Industry Co. Ltd.

In-situ formed high Mn steel coating reinforced by carbides was formed by laser surface alloying （LSA）.Laser alloyed layers on 1Cr18Ni9Ti steel with Mn+W2C （specimen A）,Mn+NiWC （specimen B） and Mn+SiC （specimen C） powders were fabricated to improve the wear and corrosion behavior of 1Cr18Ni9Ti steel blades in high speed *** evolution,phases,element distribution,microhardness,wear and corrosion behavior of the laser alloyed layers were *** indicated that high Mn steel matrix composites with undissolved W2C,WC and other in-situ formed carbides were formed by LSA with Mn+W2C and Mn+NiWC while SiC totally dissolved into the high Mn matrix when adding Mn+*** as the binding phase in Ni-WC powder decreased the crack sensitivity of the alloyed layer as compared with the addition of W2C *** improvement in average microhardness was achieved in the matrix in specimen A,B and C,with the value of 615,602 and 277 HV0.5,while that of the substrate was 212 *** increase of microhardness,wear and corrosion resistance is highly corelated to microstructure,formed phases,type and content of carbides,micro-hardness and toughness of the alloyed layers.

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

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NANO-MICRO LETTERS 2025年第1期17卷 1-15页

作者： An, Li Li, Jianyi sun, Yuanmiao Zhu, Jiamin Seow, Justin Zhu Yeow Zhang, Hong Zhang, Nan Xi, Pinxian Xu, Zhichuan J. Yan, Chun-Hua Lanzhou Univ Frontiers Sci Ctr Rare Isotopes Key Lab Nonferrous Met Chem & Resources Utilizat G State Key Lab Appl Organ ChemColl Chem & Chem Eng Lanzhou 730000 Peoples R China Nanyang Technol Univ Sch Mat Sci & Engn Singapore 639798 Singapore Chinese Acad Sci Fac Mat Sci & Energy Engn Shenzhen Inst Adv Technol Inst Technol Carbon Neutral Shenzhen 518055 Peoples R China Yunnan Univ Natl Ctr Int Res Photoelect & Energy Mat Electron Microscopy Ctr Sch Mat & EnergyKey Lab Electromagnet Mat & Devic Kunming 650091 Peoples R China Baotou Res Inst Rare Earths State Key Lab Baiyunobo Rare Earth Resource Res & Baotou 014030 Peoples R China Peking Univ Beijing Natl Lab Mol Sci State Key Lab Rare Earth Mat Chem & Applicat PKU HKU Joint Lab Rare Earth Mat & Bioinorgan Chem Beijing 100871 Peoples R China

Demonstrate that the key factor to determine the activity of reconstructed surfaces is the surface chemistry, instead of reconstruction degree using the popular perovskite LaNi1-xFexO3 oxides as model *** content can influence both the surface reconstruction degree, the activation degree, and the activity of reconstructed *** oxygen evolution reaction activity of reconstructed catalysts is primarily governed by the chemistry of the reconstructed surface species. Water splitting hinges crucially on the availability of electrocatalysts for the oxygen evolution reaction. The surface reconstruction has been widely observed in perovskite catalysts, and the reconstruction degree has been often correlated with the activity enhancement. Here, a systematic study on the roles of Fe substitution in activation of perovskite LaNiO3 is reported. The substituting Fe content influences both current change tendency and surface reconstruction degree. LaNi0.9Fe0.1O3 is found exhibiting a volcano-peak intrinsic activity in both pristine and reconstructed among all substituted perovskites in the LaNi1-xFexO3 (x = 0.00, 0.10, 0.25, 0.50, 0.75, 1.00) series. The reconstructed LaNi0.9Fe0.1O3 shows a higher intrinsic activity than most reported NiFe-based catalysts. Besides, 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 stability. Furthermore, it is vital interesting that activity of the reconstructed catalysts relied more on the surface chemistry rather than the reconstruction degree. The effect of Fe on the degree of surface reconstruction of the perovskite is decoupled from that on its activity enhancement after surface reconstruction. This 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

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Recent Advances in Fibrous Materials for Hydroelectricity Generation

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Nano-Micro Letters 2025年第2期17卷 109-133页

作者： Can Ge Duo Xu Xiao Feng Xing Yang Zheheng Song Yuhang Song Jingyu Chen Yingcun Liu Chong Gao Yong Du Zhe sun Weilin Xu Jian Fang College of Textile and Clothing Engineering Soochow UniversitySuzhou 215123People’s Republic of China National Engineering Laboratory for Modern Silk Soochow UniversitySuzhou 215123People’s Republic of China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200People’s Republic of China Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123People’s Republic of China Department of Electrical and Computer Engineering University of MassachusettsAmherstMA 01003USA Department of Materials Imperial College LondonSouth Kensington CampusLondon SW72AZUK College of Textile Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China School of Materials Science and Engineering Shanghai Institute of Technology100 Haiquan RoadShanghai 201418People’s Republic of China

Depleting fossil energy sources and conventional polluting power generation pose a threat to sustainable *** generation from ubiquitous and spontaneous phase transitions between liquid and gaseous water has been considered a promising strategy for mitigating the energy *** materials with unique flexibility,processability,multifunctionality,and practicability have been widely applied for fibrous materials-based hydroelectricity generation(FHG).In this review,the power generation mechanisms,design principles,and electricity enhancement factors of FHG are first ***,the fabrication strategies and characteristics of varied constructions including 1D fiber,1D yarn,2D fabric,2D membrane,3D fibrous framework,and 3D fibrous gel are ***,the advanced functions of FHG during water harvesting,proton dissociation,ion separation,and charge accumulation processes are analyzed in ***,the potential applications including power supply,energy storage,electrical sensor,and information expression are also ***,some existing challenges are considered and prospects for future development are sincerely proposed.

关键词： Hydroelectricity Fibrous material Streaming potential Ion diffusion

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圣女果串采收末端执行器的设计与实验

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农机化研究 2025年第3期47卷 103-110页

作者：李小平孙丙宇重庆三峡学院机械工程学院重庆万州404000 中国科学院合肥物质科学研究院合肥230031

为提高圣女果采摘效率和降低果实损伤,设计了圣女果串采收末端执行器。其末端结构采用平面四连杆驱动夹持剪切机构,夹持机构采用自补偿设计,使夹持与剪切动作一体化完成。同时,基于螺旋理论,建立接触模型,验证分析了夹持结构的力封闭性... 详细信息

为提高圣女果采摘效率和降低果实损伤,设计了圣女果串采收末端执行器。其末端结构采用平面四连杆驱动夹持剪切机构,夹持机构采用自补偿设计,使夹持与剪切动作一体化完成。同时,基于螺旋理论,建立接触模型,验证分析了夹持结构的力封闭性,并对整体装置进行了动力学和运动学分析与仿真。室内实验结果表明:整串采摘的夹持成功率为100%,剪切成功率为86.7%。

关键词：圣女果串采收末端执行器夹持剪切一体化运动学仿真

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Potassium ions and cyano group modified g-C3N4 for effective generation of H2O2 through two-electron oxygen reduction

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Science China Chemistry 2025年第1期 192-200页

作者： Dongying Wang Shulan Pu Yongmin Chen Ke Lei Yujie Duan Linjiao Mao Xuhui Zeng Xi Luo Yuntao Zhang Yuqin Dong Jin Zhong Zhang Yan sun School of Mechanical Engineering Chengdu University Department of Chemistry and Biochemistry University of California

Potassium ions （K+） doped graphitic carbon nitride （g-C3N4） was prepared by a thermal etching method using potassium hydroxide （KOH） as an ion *** transform infrared spectroscopy （FTIR） and X-ray photoelectron spectroscopy （XPS）results showed that the generation of the cyano group was detected while introducing K+.Under simulated sunlight irradiation,the sample with a K+doping amount of 10%showed the highest hydrogen peroxide （H2O2） generation rate of2,140.2μmol *** apparent quantum yield （AQY） at 400 nm and the solar-to-chemical conversion （SCC） are 4.35%and1.23%,respectively.K+acted as a bridge between g-C3N4layers,which enhanced charge transfer ***,the cyano group enhanced the adsorption capacity of protons （H+） and promoted the yield of *** catalyst exhibited excellent photocatalytic stability based on four-cycle *** addition,a mechanism study showed that superoxide radicals （·O2-）were the most important active species in the reaction *** production of H2O2was achieved through consecutive single-electron *** study deepens the understanding of the oxygen reduction reaction process and opens up a new venue for improving H2O2generation.

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儿童药物难治性癫痫的遗传学及临床特征分析

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中国全科医学 2025年第6期28卷 756-762页

作者：左然然孙素真河北省儿童医院神经内科河北省小儿癫痫与神经疾病重点实验室河北省石家庄市050000

背景目前儿童药物难治性癫痫(DRE)在儿童癫痫中的占比维持在30%左右,且常合并精神发育迟滞,影响患儿生活质量,因此DRE的诊疗仍然是神经病学的重大挑战。目的分析儿童DRE的遗传学特点及临床特征,为临床进行基因检测提供理论依据。方法回... 详细信息

背景目前儿童药物难治性癫痫(DRE)在儿童癫痫中的占比维持在30%左右,且常合并精神发育迟滞,影响患儿生活质量,因此DRE的诊疗仍然是神经病学的重大挑战。目的分析儿童DRE的遗传学特点及临床特征,为临床进行基因检测提供理论依据。方法回顾性选取2020—2022年于河北省儿童医院住院治疗且完善基因检测的95例DRE患儿为研究对象,根据基因检测结果分为基因突变阳性组(44例)和基因突变阴性组(51例)。收集患儿的一般资料(包括性别、发病年龄、用药情况、发热惊厥史、癫痫家族史等)、临床特征(发作类型、癫痫综合征、发育情况)、辅助检查[基因检测、视频脑电图(VEEG)检查、神经影像学检查],分析DRE的遗传病因及临床特征。结果95例DRE患儿中,男55例(57.9%)、女40例(42.1%),中位发病年龄为1.00(0.50,4.00)岁,用药数量为3(2,4)种;基因突变阳性组患儿发病年龄小于基因突变阴性组(Z=-5.322,P=0.001);两组患儿性别、发热惊厥史、癫痫家族史、用药数量比较,差异均无统计学意义(P>0.05)。38例(40.0%)的患儿确诊为癫痫综合征,其中76.3%(29/38)在新生儿或婴儿期发病;基因突变阳性组患儿癫痫综合征占比高于基因突变阴性组(χ^(2)=12.065,P=0.001)。临床发作类型多样,最常见的为2种及以上发作类型,占52.6%(50/95),其次为单一局灶性发作,占33.7%(32/95);两组DRE患儿发作类型比较,差异无统计学意义(χ^(2)=2.920,P=0.404)。57例患儿完善了发育筛查,其中43例(75.4%)在发病后出现不同程度的发育迟缓,33例(76.7%)表现为全面性发育迟缓;基因突变阳性组患儿发育迟缓占比高于基因突变阴性组(χ^(2)=5.728,P=0.017)。44例患儿检出变异基因,阳性检出率为46.3%,其中以离子通道类变异为主,SCN1A为最常见的单基因突变。90例(94.7%)患儿VEEG检查异常,以局灶性癫痫放电为主;基因突变阳性组患儿高峰失律占比高于基因突变阴性组(χ^(2)=7.425,P=0.006)。25例(26.3%)患儿存在结构性病因,其中基因突变阳性组12例,基因突变阴性组13例;两组DRE患儿结构性病因比较,差异无统计学意义(χ^(2)=0.039,P=0.844)。结论遗传因素为儿童DRE的重要病因,提示发病年龄小、发育迟缓与遗传性病因有关,应积极早期完善基因检测,有助于早期诊断DRE并精准治疗。

关键词：药物难治性癫痫儿童遗传学基因检测癫痫综合征临床特征全面性发育迟缓

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Output Consensus of Heterogeneous Linear MASs via Adaptive Event-Triggered Feedback Combination Control

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IEEE/CAA Journal of Automatica Sinica 2025年第1期 285-287页

作者： Shuo Yuan Chengpu Yu Jian sun the School of Automation Beijing Institute of Technology the Beijing Institute of Technology Chongqing Innovation Center

Dear Editor,This letter studies output consensus problem of heterogeneous linear multiagent systems over directed graphs. A novel adaptive dynamic event-triggered controller is presented based only on the feedback combination of the agent's own state and neighbors' output,which can achieve exponential output consensus through intermittent communication. The controller is obtained by solving two linear matrix equations, and Zeno behavior is excluded.

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Inter-Skeleton Conductive Routes Tuning Multifunctional Conductive Foam for Electromagnetic Interference Shielding, Sensing and Thermal Management

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NANO-MICRO LETTERS 2025年第1期17卷 1-18页

作者： Li, Xufeng Chen, Chunyan Li, Zhenyang Yi, Peng Zou, Haihan Deng, Gao Fang, Ming He, Junzhe sun, Xin Yu, Ronghai Shui, Jianglan Pan, Caofeng Liu, Xiaofang Beihang Univ Sch Mat Sci & Engn Beijing 100191 Peoples R China Beihang Univ Inst Atom Mfg Beijing 100191 Peoples R China Tianmushan Lab Xixi Octagon City Hangzhou 310023 Peoples R China Beijing Inst Environm Features Sci & Technol Electromagnet Scattering Lab Beijing 100854 Peoples R China

Unique inter-skeleton conductive films are constructed in polymer *** resistance change of the foam can reach four orders of magnitude under *** foam exhibits strain-adaptive electromagnetic interference shielding performance, anti-interference pressure sensor with high sensitivity over a wide pressure range and compression-regulated Joule heating function. Conductive polymer foam (CPF) with excellent compressibility and variable resistance has promising applications in electromagnetic interference (EMI) shielding and other integrated functions for wearable electronics. However, its insufficient change amplitude of resistance with compressive strain generally leads to a degradation of shielding performance during deformation. Here, an innovative loading strategy of conductive materials on polymer foam is proposed to significantly increase the contact probability and contact area of conductive components under compression. Unique inter-skeleton conductive films are constructed by loading alginate-decorated magnetic liquid metal on the polymethacrylate films hanged between the foam skeleton (denoted as AMLM-PM foam). Traditional point contact between conductive skeletons under compression is upgraded to planar contact between conductive films. Therefore, the resistance change of AMLM-PM reaches four orders of magnitude under compression. Moreover, the inter-skeleton conductive films can improve the mechanical strength of foam, prevent the leakage of liquid metal and increase the scattering area of EM wave. AMLM-PM foam has strain-adaptive EMI shielding performance and shows compression-enhanced shielding effectiveness, solving the problem of traditional CPFs upon compression. The upgrade of resistance response also enables foam to achieve sensitive pressure sensing over a wide pressure range and compression-regulated Joule heating function.

关键词： Inter-skeleton conductive films Conductive polymer foam Liquid metal Electromagnetic interference shielding

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Leader-follower: Human-centered intention-guided controller for novel SuperLimb with application to load-carrying scenarios

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Science China Technological Sciences 2025年第1期 325-338页

作者： Qinghua ZHANG Xianglong LI Hongwei JING Kerui sun Yuancheng LI Sikai ZHAO Lele LI Haotian JU Ziqi WANG Rui WU Tianjiao ZHENG Jie ZHAO Yanhe ZHU The State Key Laboratory of Robotics and System Harbin Institute of Technology The Learning Algorithms and Systems Laboratory School of Engineeringécole Polytechnique Fédérale de Lausanne

Supernumerary robotic arms(SuperLimb) are a new type of wearable robot that works closely with humans as a third hand to augment human operation capability. Accurate conveyance of wearers' intentions, allocation of roles, and humancentered interaction considerations are the key points in the process of human–SuperLimb collaboration. This paper proposes a human-centered intention-guided leader–follower controller that relies on the dynamic modeling of SuperLimb with application to load-carrying scenarios. The proposed leader–follower controller takes the human as the leader and the SuperLimb as the follower, achieving effective information communication, autonomous coordination, and good force compliance between SuperLimb, humans, and the environment under human safety assurance. First, the human–SuperLimb dynamic system is modeled to achieve force interaction with the environment and wearer. Second, to achieve the precise intention extraction of humans, pose data from five visual odometry sensors are fused to capture the human state, the generalized position, the velocity of hands, and the surface electromyography signals from two myoelectric bracelets sensors are processed to recognize the natural hand gestures during load-carrying scenarios by a designed Swin transformer network. Then, based on the real-time distance detection between human and mechanical limbs, the security assurance and force-compliant interaction of the human–SuperLimb system are realized. Finally, the human hand muscle intention recognition, human–robot safety strategy verification,and comparative load-carrying experiments with and without the proposed method are conducted on the SuperLimb *** showed that the task parameters are well estimated to produce more reasonable planning trajectories, and SuperLimb could well understand the wearer's intentions to switch different SuperLimb actions. The proposed sensor-based human–robot communication framework motivates future studies of o

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