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Reasonable design a high-entropy garnet-type solid electrolyte for all-solid-state lithium batteries

Journal of Energy Chemistry 2024年第9期96卷 414-423页

作者： Shiyu Yu Yandi Li Jiaxin Luo daming chen Liang Yang Yaqing Wei De Li Yuanxun Li Yong chen State Key Laboratory of Marine Resource Utilization in South China Sea School of Materials Science1nd EngineeringHainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti ResourcesHainan UniversityHaikou 570228HainanChina State Key Laboratory of Electronic Thin Films1nd Integrated Devices University of Electronic Science1nd Technology of ChinaChengdu 610054SichuanChina Guangdong Key Laboratory for Hydrogen Energy Technologies School of Materials Science1nd Hydrogen EnergyFoshan UniversityFoshan 528000GuangdongChina

Traditional garnet solid electrolyte(Li_(7)La_(3)Zr_(2)O_(12))suffers from low room temperature ionic conductivity,poor air stability,high sintering temperature and energy *** the development prospects of high-entropy materials with high structural disorder and strong component controllability in the field of electrochemical energy storage,herein,a novel high-entropy garnet-type oxide solid electrolyte,Li_(5.75)Ga_(0.25)La_(3)Zr_(0.5)Ti_(0.5)Sn_(0.5)Nb_(0.5)O_(12)(LGLZTSNO)was constructed by partially replacing the Li and Zr sites in Li_(7)La_(3)Zr_(2)O_(12)with Ga and Ti/Sn/Nb elements,*** experimental and density functional theory(DFT)calculation results show that the high-entropy LGLZTSNO electrolyte has preferable room temperature ion conductivity,air stability,interface contact performance with lithium anode,and the ability to suppress lithium *** to the improvement of electrolyte performance,the critical current density of Li/Ag@LGLZTSNO/Li symmetric cell was increased from 0.42 to 1.57 mA cm^(−2),and the interface area specific impedance(IASR)was reduced from 765.2 to 42.3Ωcm^(2).Meanwhile,the Li/Ag@LGLZTSNO/LFP full cell also exhibits excellent rate performance and cycling performance(148 mA h g^(−1)at 0.1 C and 124 mA h g^(−1)at 0.5 C,capacity retention up to 84.8%after 100 cycles at 0.1 C),showing the application prospects of high-entropy LGLZTSNO solid electrolyte in high-performance all solid state lithium batteries.

关键词： Garnet solid electrolyte Dual-site substitution High-entropy all solid-state lithium batteries(ASSLBs)

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Modulating Co-Co bonds average length in Co_(0.85)Se_(1-x)S_(x) to enhance conversion reaction for potassium storage

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Journal of Energy Chemistry 2024年第4期91卷 111-121页

作者： daming chen Yuchun Liu Pan Feng Xiao Tao Zhiquan Huang Xiyu Zhang Min Zhou Jian chen Jiangsu Key Laboratory of Advanced Metallic Materials School of Materials Science and EngineeringSoutheast UniversityNanjing 211189JiangsuChina Hefei National Laboratory for Physical Sciences at the Microscale School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefei 230026AnhuiChina

While alloying transition metal chalcogenides(TMCs)with other chalcogen elements can effectively improve their conductivity and electrochemical properties,the optimal alloying content is still *** this study,we study the influence of dopant concentration on the chemical bonds in TMC and reveal the associated stepwise conversion reaction mechanism for potassium ion *** to density function theory calculations,appropriate S-doping in Co0.85Se(Co_(0.85)Se_(1-x)S_(x))can reduce the average length of Co-Co bonds because of the electronegativity variation,which is thermodynamically favourable to the phase transition *** optimal Se/S ratio(x=0.12)for the conductivity has been obtained from experimental *** assembled as an anode in potassium-ion batteries(PIBs),the sample with optimized Se/S ratio exhibits extraordinary electrochemical *** rate performance(229.2 mA h g^(-1)at 10 A g^(-1))is superior to the state-of-the-art *** assembled with Prussian blue(PB)as a cathode,the pouch cell exhibits excellent performance,demonstrating its great potential for ***,the stepwise K+storage mechanism caused by the coexistence of S and Se is revealed by in-situ X-ray diffraction and ex-situ transmission electron microscopy ***,this work not only provides an effective strategy to enhance the electrochemical performance of transition metal chalcogenides but also reveals the underlying mechanism for the construction of advanced electrode materials.

关键词： Co_(0.85)Se_(1-x)S_(x) Co-Co bonds Phase transition reactions Optimal Se/s Potassium ion batteries

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合成生物学赋能:从学科发展到产业转化

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中国科学院院刊 2024年第5期39卷 851-861页

作者：熊燕马雪晴陈大明刘晓赵国屏中国科学院上海营养与健康研究所上海生命科学信息中心上海200031 中国科学院大学北京100049 中国科学院上海营养与健康研究所生物医学大数据中心上海200031 中国科学院分子植物科学卓越创新中心上海200032

合成生物学通过引入工程科学“自下而上”认识生命体系的理念,在生命科学研究中采用“设计—构建—测试—学习”迭代的研究范式,并在基因组和系统生物学的基础上,构建工程化的新生命体系,为生命科学提供了“从创造到理解”的新途径,不... 详细信息

合成生物学通过引入工程科学“自下而上”认识生命体系的理念,在生命科学研究中采用“设计—构建—测试—学习”迭代的研究范式,并在基因组和系统生物学的基础上,构建工程化的新生命体系,为生命科学提供了“从创造到理解”的新途径,不仅颠覆了从整体到局部的“格物致知—还原论”的传统研究策略,还开启了理解生命本质的“建物致知”新文化。同时,合成生物学将生物技术由“模拟自然过程”和“遗传工程改造”上升至“定量理性设计”和“标准化构建测试”的高度,推动生物工程和代谢工程朝着对标生命过程的高效率、普适性的工程化“重编程”,甚至是“从头构建”的新高度,以实现“建物致用”的目标。文章梳理了合成生物学近年来在生命科学基础研究中“建物致知”方面的重要进展,列举了其在化工、医药、食品、环境等应用领域中“建物致用”的具体案例,展现了合成生物学对人类社会全面发展正在发挥的重大影响,强调了为确保合成生物学的健康、快速发展,构建会聚生态系统与治理体系的重要性。

关键词：合成生物学赋能会聚创新生态系统

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A Novel Hybrid Point Defect of Oxygen Vacancy and Phosphorus Doping in TiO_(2)Anode for High-Performance Sodium Ion Capacitor

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Nano-Micro Letters 2022年第10期14卷 1-14页

作者： daming chen Youchun Wu Zhiquan Huang Jian chen School of Materials Science and Engineering Southeast UniversityNanjing 211189People’s Republic of China

Although sodium ion capacitors(SICs)are considered as one of the most promising electrochemical energy storage devices(organic electrolyte batteries,aqueous batteries and supercapacitor,etc.)due to the combined merits of battery and capacitor,the slow reaction kinetics and low specific capacity of anode materials are the main *** defects including vacancies and heteroatoms doping have been widely used to improve the kinetics behavior and capacity of anode ***,the interaction between vacancies and heteroatoms doping have been seldomly *** this study,a hybrid point defects(HPD)engineering has been proposed to synthesize TiO_(2) with both oxygen vacancies(OVs)and P-dopants(TiO_(2)/C-HPD).In comparison with sole OVs or P-doping treatments,the synergistic effects of HPD on its electrical conductivity and sodium storage performance have been clarified through the density func-tional theory calculation and sodium storage *** expected,the kinetics and electronic conductivity of TiO_(2)/C-HPD3 are significantly improved,resulting in excellent rate performance and outstanding cycle ***,the SICs assembled from TiO_(2)/C-HPD3 anode and nitrogen-doped porous carbon cathode show outstanding power/energy density,ultra-long life with good capacity *** work provides a novel point defect engineering perspective for the development of high-performance SICs electrode materials.

关键词： Defect engineering P-dopants Oxygen vacancy Conductivity Sodium ion capacitors

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数字化驱动的生物经济发展

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世界科技研究与发展 2024年第1期46卷 36-44页

作者：马征远熊燕陈大明中国科学院上海生命科学信息中心中国科学院上海营养与健康研究所上海200031 上海WTO事务咨询中心上海200336

生物经济是继农业经济、工业经济和信息经济之后的一种新经济形态,以生命科学和生物技术的创新与进步为驱动力,以生物资源的保护与利用为基础,以深度融合健康、医药、农业、能源、环保、材料等产业为特征。生物经济也是典型的知识密集... 详细信息

生物经济是继农业经济、工业经济和信息经济之后的一种新经济形态,以生命科学和生物技术的创新与进步为驱动力,以生物资源的保护与利用为基础,以深度融合健康、医药、农业、能源、环保、材料等产业为特征。生物经济也是典型的知识密集型经济,数字化赋能打通了生物经济从“数据→信息→知识→应用”的转化链条,能提升复杂生物系统的测量与解析、调控与干预、设计和创造能力,促进生物技术向可定量、可计算、可调控、可预测的方向跃升,提高生物资源的保护和利用效率,并激活生物经济发展的新动能。本文在解析生物经济形态的生产要素、生产力和生产关系特征的基础上,探讨了数字化驱动生物经济发展的路径,研究了生物经济发展的挑战及可能的数字化治理策略,并提出针对性的策略建议。

关键词：生物技术生物经济数字化知识

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技术机会分析方法研究综述

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情报探索 2024年第3期 128-134页

作者：王理龚妍芸陈大明江洪波中国科学院上海营养与健康研究所中国科学院上海生命科学信息中心上海200031 中国科学院大学北京100049

[目的/意义]旨在对国内外技术机会分析(TOA)的研究内容及方法进行梳理,总结未来的发展方向。[方法/过程]通过文献调研,梳理TOA发展脉络,从文本挖掘、图谱构建、潜在机会识别三个环节分别阐述研究方法及应用,总结现存问题及发展趋势。[结... 详细信息

[目的/意义]旨在对国内外技术机会分析(TOA)的研究内容及方法进行梳理,总结未来的发展方向。[方法/过程]通过文献调研,梳理TOA发展脉络,从文本挖掘、图谱构建、潜在机会识别三个环节分别阐述研究方法及应用,总结现存问题及发展趋势。[结果/结论]当前TOA主要在信息利用效率、方法的可移植性、结果准确性与可解释性等方面存在不足;未来应整合多源数据,优化文本挖掘,多方法结合识别技术机会。

关键词：技术机会技术创新文本挖掘图谱构建

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Study of crystalline silicon solar cells with integrated bypass diodes

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Science China(Technological Sciences) 2012年第3期55卷 594-599页

作者： chen KaiHan chen daming ZHU YanBin SHEN Hui State Key Laboratory of Optoelectronic Materials and Technologies Institute for Solar Energy SystemsSun Yat-Sen UniversityGuangzhou 510275China

This paper reported a novel method of integrating bypass diodes into crystalline silicon solar *** diodes which have the opposite p-n junction were formed by printing specific paste on the local surface of solar cells using screen printing,while infrared laser was applied to isolate the diode from the cell after firing.A module of crystalline silicon solar cells with integrated bypass diodes was fabricated and the I-V characteristics were measured under different shade *** experimental results clearly showed that the integrated bypass diodes can effectively stabilize module's short circuit current while reduce the module power loss when shaded as well.

关键词： crystalline silicon solar cells bypass diode integration

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Circular RNA circ_0003609 ameliorates hypertrophied ligamentum flavum by regulating the miR-155/SIRT1 axis

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BIOCELL 2024年第6期48卷 1001-1008页

作者： GUIBIN ZHONG SHURONG WANG YUJIN HE daming FENG KE WEI YANQIU YANG JIANWEI chen JUNLING chen Department of Orthopaedics Baoshan BranchRen Ji HospitalSchool of Medicine Shanghai Jiao Tong UniversityShanghai200444China Department of Orthopaedics Ren Ji HospitalSchool of Medicine Shanghai Jiao Tong UniversityShanghai200127China Department of Operation and Anaesthesia Ren Ji HospitalSchool of Medicine Shanghai Jiao Tong UniversityShanghai200127China Department of Orthopaedics Huai Yuan Chang Jiu HospitalHuaiyuan233499China

Background:Hypertrophy of the ligamentumﬂavum(HLF)is a common contributor to spinal stenosis which results in signiﬁcant neurological *** RNA(circRNA)circ_0003609 has been linked to HLF;however,the exact mechanism by which it causes this disease is ***:Circ_0003609 expressions were regulated in HLF cells by overexpression vectors and RNA *** proliferation andﬁbrosis-related gene expression were checked by the Cell Counting Kit-8(CCK-8)assay and western ***’s prediction of the association between miR-155 and circ_0003609 was supported by a dual-luciferase reporter *** function of the miR-155/sirtuin 1(SIRT1)axis in controlling HLFﬁbrosis was further ***:Overexpression of circ_0003609 suppressed HLF cell propagation andﬁbrosis compared to its *** was found that circ_0003609 served as the sponge for miR-155 and that the circ_0003609/miR-155 axis controlled theﬁbrosis of HLF *** was found that circ_0003609 acted as a sponge for miR-155,regulating theﬁbrosis of HLF ***,miR-155 targets SIRT1,and the miR-155/SIRT1 axis promotes HLF cellﬁ***:Circ_0003609 ameliorates hypertrophied ligamentumﬂavum(LF)by modulating the miR-155/SIRT1 axis,indicating a potential treatment approach for HLF.

关键词： Circular RNA Circ_0003609 Hypertrophy of ligamentum flavum MiR-155 Sirtuin 1 Fibrosis

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Novel high-voltage cathode for aqueous zinc ion batteries:Porous K_(0.5)VOPO_(4)·1.5H_(2)O with reversible solid-solution intercalation and conversion storage mechanism

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Journal of Energy Chemistry 2024年第6期93卷 71-78,I0003页

作者： Liyu Wang Mingliang Zhao Xiaoyu Zhang Menghua Wu Yu Zong Yu chen Xinliang Huang Mingjie Xing Xin Ning Wen Wen daming Zhu Xiaochuan Ren Industrial Research Institute of Nonwovens&Technical Textiles College of Textiles&ClothingShandong Engineering Research Center for Specialty Nonwoven MaterialsQingdao UniversityQingdao 266071ShandongChina Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China

Cathode materials that possess high output voltage,as well as those that can be mass-produced using facile techniques,are crucial for the advancement of aqueous zinc-ion battery(ZIBs)applications,Herein,we present for the first time a new porous K_(0.5)VOPO_(4)·1.5H_(2)O polyanionic cathode(P-KIVP)with high output voltage(above 1.2 V)that can be manufactured at room temperature using straightforward coprecipitation and etching *** P-KVP cathode experiences anisotropic crystal plane expansion via a sequential solid-solution intercalation and phase co nversion pathway throughout the Zn^(2+)storage process,as confirmed by in-situ synchrotron X-ray diffraction and ex-situ X-ray photoelectron *** to other layered vanadium-based polyanionic materials,the P-KVP cathode experiences a progressive decline in voltage during the cycle,which is demonstrated to be caused by the irreversible conversion into amorphous VO_(x).By introducing a new electrolyte containing Zn(OTF)_(2) to a mixed triethyl phosphate and water solution,it is possible to impede this irreversible conversion and obtain a high output voltage and longer cycle life by forming a P-rich cathode electrolyte interface *** a proof-of-concept,the flexible fiber-shaped ZIBs based on modified electrolyte woven into a fabric watch band can power an electronic watch,highlighting the application potential of P-KVP cathode.

关键词： Aqueous zinc ion battery Cathode Porous material High voltage platform In-situ synchrotron X-ray diffraction

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FATIGUE PROPERTIES OF META-BAINITE IN STEEL 40CrMnSiMoVA

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Acta Metallurgica Sinica(English Letters) 1992年第3期5卷 206-211页

作者： chen daming KANG Mokuang Northwestern Polytechnical University,Xi′an,ChinaTAN Ruobing Institute of Metal Research,Academia Sinica,Shenyang,China Northwestern Polytechnical Univ Xi'an China

The microstructure,strength,toughness and fatigue properties of an ultra-high strength steel 40CrMnSiMoVA have been *** so-called meta-bainite,composed of thin re- tained austenite films within or between the bainitic ferrite lathes was found in the steel after isothermally quenched at 300℃ for *** comparison with the martensite structure obtained by isothermally quenching in martensite range,the meta-bainite has more excellent strength and plasticity,lower notch sensitivity,stronger strain harden ability,higher fatigue strength, longer strain or impact fatigue life,slower crack propagation rate and more remarkable overload effect on increasing fatigue life.

关键词： ultra-high strength steel meta-bainite microstructure fatigue property

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