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Tandemly promoting the sulfur redox kinetics through low concentration mixed organodiselenide and organoditelluride in Ah-level high-energydensity Li-S batteries

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Science China Materials 2025年第1期68卷 207-216页

作者： jiangqi zhou Chengyong Shu Qianyu Zhang Wei Tang Yuping Wu School of Chemical Engineering and Technology Xi’an Jiaotong UniversityXi’an 710049China School of Energy and Environment Southeast UniversityNanjing 210096China College of Materials Science and Engineering Sichuan UniversityChengdu 610064China School of Chemical Engineering Kunming University of Science and TechnologyKunming 650500China

Homogeneous redox mediation is efficient in alleviating the shuttling effect and slow redox kinetics of lithium polysulfides in lithium-sulfur ***,their perfect performance is not fulfilled owning to the fact that the multi-step transformation of lithium polysulfides requests the multifunctional active positions for the tandem *** on the redox comediation principles,a promoter of mixing organodiselenide and organoditelluride(mixed-Se/Te)was raised to induce tandem catalysis and boost the effective electrochemical conversion of lithium *** specifically,diphenyl diselenide facilitated the liquid-liquid and solid-liquid transformation between lithium polysulfides and sulfur,while diphenyl ditelluride improved the solid-liquid transformation concerning lithium sulfide ***,even under high sulfur loading of 6.5 mg cm^(−2) and low electrolyte/sulfur ratio of 5.88μL mg^(−1),the 10 mM low concentration mixed-Se/Te promoter offered a high discharge capacity of 6.6 mAh cm^(−2) and high rate performance of 4.1 mAh cm^(−2) at 0.5 ***,the assembled 1.5 Ah-level lithium-sulfur pouch cells provide an energy density of 332 Wh kg^(−1) at 0.05 C and good cycling *** research demonstrates the applicability of propelling continuous sulfur conversion reactions with detached active positions and is anticipated to stimulate deep molecular design of kinetic promoter to targeted energy-associated redox reactions.

关键词： lithium-sulfur batteries redox kinetics tandem catalysis organodiselenide organoditelluride

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A Universal Strategy For N-Doped 2D Carbon Nanosheets With Sub-Nanometer Micropore For High-Performance Supercapacitor

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Energy & Environmental Materials 2021年第4期4卷 569-576页

作者： jiangqi zhou Li Jiang Chengyong Shu Long Kong Iqbal Ahmad Ya-Nan zhou Wei Tang Xiaofei Sun Yuping Wu State Key Laboratory for Mechanical Behavior of Materials School of Chemical Engineering and TechnologyXi'an Jiaotong UniversityXi’an 710049China State Key Laboratory of Space Power-Sources Technology Shanghai Institute of Space Power-SourcesShanghai 200245China Academy for Advanced Interdisciplinary Studies Southern University of Science and TechnologyShenzhen 518055China State Key Laboratory for Manufacturing Systems Engineering School of Mechanical EngineeringXi’an Jiaotong UniversityXi’an 710049China State Key Laboratory of Materials-Oriented Chemical Engineering School of Energy ScienceNanjing Tech UniversityNanjing 211800China

Preparing carbon nanosheets with precise control of open porous morphology via universal process and understanding the relationship between structure and capacitive performance are very urgent for achieving advanced ***,we propose a simple yet effective additive-free method to transform a bulk layered potassium phthalimide salt to novel nitrogen-doped twodimensional carbon sheets by self-activation during *** obtained samples showed large-sized and flat structure with lateral size around 10μm,uniform sub-nanometer micropore size distribution of about 0.65 nm dimension,large specific surface area up to 2276.7 m^(2)g^(-1),and suitable nitrogen *** from these merits,the optimized sample delivers a high specific capacitance of 345 F g^(-1)at 1 A g^(-1)and retains 270 F g^(-1)even at 50 A g^(-1)in6.0 M KOH ***,the symmetric supercapacitor shows maximum energy densities of 16.43 Wh kg^(-1)and 23.6 Wh kg^(-1)in 6.0 M KOH and 1.0 M Na_(2)SO_(4)electrolytes,***,on account the universality and simplicity of this method,the undoped as-prepared carbon sheet with uniform sub-nanometer micropore distribution can be synthesized from different potassium-containing salts with layered structure,which can be employed as a model for a deep understanding the effect of sub-nanometer micropores on capacitive *** find the number of micropores centered at 0.65 nm can be applied as one indicator to clarify the correlation between capacitance and critical pore size below 1 nm.

关键词： universal strategy sub-nanometer micropore carbon nanosheet supercapacitors

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Biomass‑Derived Carbon Materials for High‑Performance Supercapacitors:Current Status and Perspective

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Electrochemical Energy Reviews 2021年第2期4卷 219-248页

作者： jiangqi zhou Shilin Zhang Ya‑Nan zhou Wei Tang Junhe Yang Chengxin Peng Zaiping Guo School of Chemical Engineering and Technology Xi’an Jiaotong UniversityXi’an 710049ShaanxiChina School of Materials Science and Engineering University of Shanghai for Science and TechnologyShanghai 200093China School of Mechanical MaterialsMechatronicand Biomedical EngineeringFaculty of Engineering and Information SciencesUniversity of WollongongWollongongNSW 2522Australia

Supercapacitors are electrochemical energy storage systems that depend on high-surface-area electrodes and can play a dominant role in areas that require high power delivery or *** of various electrodes,biomass-derived carbonaceous electrodes have recently shown impressive promise in high-performance supercapacitors because of their widespread availability,renewable nature and low-cost electricity *** on this,this review will discuss the current status of biomass-derived carbon materials in supercapacitors and highlight current research with a specific emphasis on the influences of structure and elemental doping on the electrochemical performance of corresponding carbon *** review will also discuss the gap between laboratory achievements and practical utilization in terms of these biomass-derived carbon materials and outline practical strategies for future improvement.

关键词： Biomass-derived carbonaceous Electrodes Structural engineering Doping effects Supercapacitors

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Metal-free two-dimensional phosphorene-based electrocatalyst with covalent P-N heterointerfacial reconstruction for electrolyte-lean lithium-sulfur batteries

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Carbon Energy 2024年第5期6卷 175-185页

作者： jiangqi zhou Chengyong Shu Jiawu Cui Chengxin Peng Yong Liu Weibo Hua Laura Simonelli Yuping Wu Shi Xue Dou Wei Tang School of Chemical Engineering and Technology Xi'an Jiaotong UniversityXi'anChina School of Materials Science and Engineering University of Shanghai for Science and TechnologyShanghaiChina State Key Laboratory of Space Power-Sources Technology Shanghai Institute of Space Power-SourcesShanghaiChina CELLS-ALBA Synchrotron BarcelonaSpain School of Energy and Environment Southeast UniversityNanjingChina

The use of lithium-sulfur batteries under high sulfur loading and low electrolyte concentrations is severely restricted by the detrimental shuttling behavior of polysulfides and the sluggish kinetics in redox ***-dimensional(2D)few layered black phosphorus with fully exposed atoms and high sulfur affinity can be potential lithium-sulfur battery electrocatalysts,which,however,have limitations of restricted catalytic activity and poor electrochemical/chemical *** resolve these issues,we developed a multifunctional metal-free catalyst by covalently bonding few layered black phosphorus nanosheets with nitrogen-doped carbon-coated multiwalled carbon nanotubes(denoted c-FBP-NC).The experimental characterizations and theoretical calculations show that the formed polarized P-N covalent bonds in c-FBP-NC can efficiently regulate electron transfer from NC to FBP and significantly promote the capture and catalysis of lithium polysulfides,thus alleviating the shuttle ***,the robust 1D-2D interwoven structure with large surface area and high porosity allows strong physical confinement and fast mass ***,with c-FBP-NC as the sulfur host,the battery shows a high areal capacity of 7.69 mAh cm^(−2) under high sulfur loading of 8.74 mg cm^(−2) and a low electrolyte/sulfur ratio of 5.7μL mg^(−1).Moreover,the assembled pouch cell with sulfur loading of 4 mg cm^(−2) and an electrolyte/sulfur ratio of 3.5μL mg^(−1) shows good rate capability and outstanding *** work proposes an interfacial and electronic structure engineering strategy for fast and durable sulfur electrochemistry,demonstrating great potential in lithium-sulfur batteries.

关键词： black phosphorus electronic structure high sulfur loading interfacial covalent bonds lean electrolyte

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遗传算法在车身装配连接方式优化中的应用

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计算机辅助设计与图形学学报 2005年第12期17卷 2751-2755页

作者：周江奇陈关龙金隼来新民上海交通大学机械与动力工程学院车身制造技术中心上海200030

提出用遗传算法求解车身装配接头方案的优化选择问题.在车身装配尺寸链表达基础上,分析了不同关键算子及参数选择对遗传算法计算性能的影响,并通过实例验证了文中方法的可行性.该方法有助于提高产品设计效率.

关键词：遗传算法设计优化车身

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车身设计尺寸质量评价的装配尺寸链自动生成

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计算机辅助设计与图形学学报 2005年第5期17卷 1034-1038页

作者：周江奇陈关龙来新民林忠钦上海交通大学机械与动力工程学院上海200030

提出一种适合计算机推演的车身尺寸链生成方法在研究装配有向图表达基础上建立车身装配接触链模型,并应用图论方法开发了以关键尺寸为目标的路径搜索算法;通过可行路径和尺寸链的映射关系,生成车身装配尺寸链该方法的实现。

关键词：车身尺寸链图论尺寸质量

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车身装配尺寸链生成方法

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机械工程学报 2005年第7期41卷 164-168页

作者：周江奇陈关龙来新民林忠钦上海交通大学机械与动力工程学院上海200030

误差分析中装配函数的构造在装配体尺寸质量评价中扮演重要的角色。尺寸链的形成过程反映了装配函数的核心内容。针对柔性零件的装配连接特征,首先建立了车身装配尺寸链信息模型,通过路径搜索算法,提出车身装配体尺寸链的实现和生成方... 详细信息

误差分析中装配函数的构造在装配体尺寸质量评价中扮演重要的角色。尺寸链的形成过程反映了装配函数的核心内容。针对柔性零件的装配连接特征,首先建立了车身装配尺寸链信息模型,通过路径搜索算法,提出车身装配体尺寸链的实现和生成方法。所生成的尺寸链综合考虑了设计要求、装配工艺(顺序)、接头形式等因素,为设计方案的优化评价提供了误差分析手段。

关键词：尺寸链误差分析图论车身

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汽车高强板用Cr8类冲压模具钢性能研究

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汽车工程 2020年第6期42卷 826-831页

作者：韦韡周江奇李恒佰李开文赵亮元莎上汽通用五菱汽车股份有限公司技术中心柳州545005 宝山钢铁股份有限公司技术中心上海200940 机械科学研究总院集团有限公司北京100044

本文中开发了一种新型Cr8类冷作模具钢材料HNC53,对其进行了成分分析、金相分析和力学性能测试,并设计试样进行热处理和TD表面处理,结果表明该材料中P、S等有害杂质的控制精度分别达到0.03%和0.005%以下的高标准,碳化物弥散分布于珠光体... 详细信息

本文中开发了一种新型Cr8类冷作模具钢材料HNC53,对其进行了成分分析、金相分析和力学性能测试,并设计试样进行热处理和TD表面处理,结果表明该材料中P、S等有害杂质的控制精度分别达到0.03%和0.005%以下的高标准,碳化物弥散分布于珠光体中,最大尺寸约25μm×12μm,热处理和表面处理后三向尺寸最大变化率为1.58‰,TD层厚度10μm,基体组织均匀。通过与同类材料对比,HNC53材料各项性能指标已经达到进口材料水平。

关键词：模具钢碳化物尺寸稳定性显微组织

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基于关联图的车身零件装配序列规划

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汽车工程 2006年第2期28卷 190-193页

作者：邢彦锋金隼周江奇陈关龙上海交通大学机械与动力学院上海200030

对车身零件装配优先关系应用装配关联图及矩阵建模,分析了装配不同构形下的分总成数学模型,根据识别出的分总成采取不同的选择方案以自动生成车身装配序列,该方法应用某车身前围进行了装配顺序规划的实例验证。

关键词：装配顺序关联图分总成车身

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Green innovation unleashed: Harnessing tungsten-based nanomaterials for catalyzing solar-driven carbon dioxide conversion

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Chinese Chemical Letters 2025年第2期36卷 136-145页

作者： Weidan Meng Yanbo zhou Yi zhou State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and Technology National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery East China University of Science and Technology Shanghai Institute of Pollution Control and Ecological Security Shanghai Engineering Research Center for Multi-media Environmental Catalysis and Resource Utilization East China University of Science and Technology

Carbon dioxide photocatalytic reduction (CO2-PR) is an efficient method for controlling CO2emissions and generating cleaner energy while mitigating global warming. Tungsten oxides (WxOy) have attracted considerable attention for CO2-PR due to their excellent spectral absorbance. However, comprehensive reviews are lacking on the use of WxOyfor CO2-PR. Therefore, this review provides a detailed summary of t research progress made with WxOy-based catalysts in CO2-PR. It also explains the fundamental principles of CO2-PR and evaluates key performance indicators that affect the activity of WxOy-based photocatalysts,including yield, selectivity, stability, and apparent quantum yield. Additionally, this review explores opportunities for synthesizing high-performance WxOy-based photocatalysts and highlights their potential for the green preparation of C1/C2 products through CO2-PR. These innovative strategies aim to address the challenges and pressures associated with energy and environmental issues, particularly by enhancing artificial photosynthesis efficiency.

关键词： Carbon dioxide photoreduction Mechanism Performance evaluation Selectivity Tungsten-based nanocatalyst

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