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Textured Asymmetric Membrane Electrode Assemblies of Piezoelectric Phosphorene and Ti_(3)C_(2)T_(x)MXene Heterostructures for Enhanced Electrochemical Stability and Kinetics in LIBs

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Nano-Micro Letters 2024年第4期16卷 394-414页

作者： Yihui Li Juan Xie Ruofei Wang Shugang Min zewen xu Yangjian Ding Pengcheng Su Xingmin Zhang Liyu Wei Jing‑Feng Li Zhaoqiang Chu Jingyu Sun Cheng Huang Volta and DiPole Materials Labs College of EnergySoochow Institute for Energy and Materials InnovationS(SIEMIS)Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceKey Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical IndustrySoochow UniversitySuzhou 215006People’s Republic of China School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013People’s Republic of China College of Underwater Acoustic Engineering Harbin Engineering UniversityHarbin 150001People’s Republic of China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteShanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201204People’s Republic of China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084People’s Republic of China High Density Materials Technology Center for Flexible Hybrid Electronics Suzhou Institute of Electronic Functional Materials TechnologySuzhou Industrial Technology Research InstituteSuzhou 215151People’s Republic of China Institute of Advanced Materials and Institute of Membrane Science and Technology Jiangsu National Synergistic Innovation Center for Advanced MaterialsSuzhou Laboratory and Nanjing Tech UniversityNanjing 211816People’s Republic of China

Black phosphorus with a superior theoretical capacity(2596 mAh g^(-1))and high conductivity is regarded as one of the powerful candidates for lithium-ion battery(LIB)anode materials,whereas the severe volume expansion and sluggish kinetics still impede its applications in *** contrast,the exfoliated two-dimensional phosphorene owns negligible volume variation,and its intrinsic piezoelectricity is considered to be beneficial to the Li-ion transfer kinetics,while its positive influence has not been discussed ***,a phosphorene/MXene heterostructure-textured nanopiezocomposite is proposed with even phosphorene distribution and enhanced piezo-electrochemical coupling as an applicable free-standing asymmetric membrane electrode beyond the skin effect for enhanced Li-ion *** experimental and simulation analysis reveals that the embedded phosphorene nanosheets not only provide abundant active sites for Li-ions,but also endow the nanocomposite with favorable piezoelectricity,thus promoting the Li-ion transfer kinetics by generating the piezoelectric field serving as an extra *** waltzing with the MXene framework,the optimized electrode exhibits enhanced kinetics and stability,achieving stable cycling performances for 1,000 cycles at 2 A g^(-1),and delivering a high reversible capacity of 524 m Ah g^(-1)at-20℃,indicating the positive influence of the structural merits of self-assembled nanopiezocomposites on promoting stability and kinetics.

关键词： Phosphorene Nanopiezocomposite Piezo-electrochemical coupling Membrane electrode assembly Lithium-ion storage

LiOH-mediated crystallization regulating strategy enhancing electrochemical performance and structural stability of SiO anodes for lithium-ion batteries

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Nano Research 2024年第9期17卷 8174-8183页

作者： Zhengqiu He zewen xu Yu Long Jiexin Zhu Hao Yang Kuo Chen Qiang Zhou Ning Cao Xiaobo Wang Juan Wang Xiaojie Tan Litao Wang Luhai Wang Shengbao He Mengdi Zhang Han Hu Mingbo Wu State Key Laboratory of Heavy Oil Processing College of Chemistry and Chemical EngineeringChina University of Petroleum(East China)Qingdao 266580China Department of Chemistry National University of Singapore3 Science Drive 3Singapore 117543Singapore School of Chemical Sciences University of AucklandAuckland 1010New Zealand Petrochemical Research Institute Petro China Company Ltd.Beijing 102206China

Silicon monoxide(SiO)is widely recognized as a promising anode material for next-generation lithium-ion *** to its metastable amorphous structure,SiO exhibits a highly complex degree of crystallization at the microscopic level,which significantly influences its electrochemical *** a consequence,accurately regulating the crystallization of SiO,and further establishing the relationship between crystallinity and electrochemical performance are very critical for SiO *** this article,carbon-coated SiO materials with different crystallinity degrees were synthesized using lithium hydroxide monohydrate(LiOH·H_(2)O)as a structural modifier to reveal this ***,moderate amount of LiOH·H_(2)O addition results in the forming of an oxygen-rich shell,which effectively inhibits the inward migration of oxygen atoms on the SiO surface and suppresses volume ***,the crystallinity of SiO will gradually enhance and the crystalline phase appears with increasing the amount of LiOH·H_(2)O,which will generate a deteriorative Li+diffusion *** balancing the above two contradictions,a mass fraction of 1%LiOH·H_(2)O for the additive yielded SiO@C-1,characterized by optimal ***@C-1 demonstrates exceptional long-cycle stability with 74.8%capacity retention after 500 cycles at 1 A·g^(-1).Furthermore,it achieves a capacity retention of 52.2%even at a high density of 5 A·g^(-1).This study first reveals the relationship between SiO crystallinity and electrochemical performance,which efficiently guides the design of high-performance SiO anodes.

关键词： lithium-ion batteries SiO anodes crystallinity regulation high rate long life

From Perception to Control:an Autonomous Driving System For a Formula Student Driverless Car

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From Perception to Control:an Autonomous Driving System For ...

2019中国汽车工程学会年会

作者： Chen Tairan Li Zirui He Yiting xu zewen Yan Zhe Li Huiqian Beijing Institute of Technology

This paper introduces the autonomous system of the "Smart Shark Ⅱ" which won the Fonnula Student Autonomous China(FSAC) Competition in *** this competition,an autonomous racecar is required to complete autonomously two laps of unknown *** this paper,the author presents the self-driving software structure of this racecar which ensure high vehicle speed and *** key components ensure a stable driving of the racecar,LiDAR-based and Vision-based cone detection provide a redundant perception;the EKF-based localization offers high accuracy and high frequency state estimation;perception results are accumulated in time and space by occupancy grid *** getting the trajectory,a model predictive control algorithm is used to optimize in both longitudinal and lateral control of the ***,the performance of an experiment based on real-world data is shown.

关键词： redundant perception localization and mapping model predictive control formula student autonomous China

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胺基材料在二氧化碳分离膜领域研究进展

化工进展 2024年第3期43卷 1374-1386页

作者：徐泽文王明王强侯影飞中国石油大学(华东)重质油国家重点实验室山东青岛266580 浙江油田西南采气厂四川宜宾645250

膜法碳捕集是实现双碳目标的重要途径,但受限于材料本身,膜材料的分离性能存在上限。胺基材料可以和CO_(2)发生可逆反应,能够显著提高膜材料的分离性能,常被作为促进传质的载体引入到膜体系。本文介绍了胺基材料促进CO_(2)传质的机理,... 详细信息

膜法碳捕集是实现双碳目标的重要途径,但受限于材料本身,膜材料的分离性能存在上限。胺基材料可以和CO_(2)发生可逆反应,能够显著提高膜材料的分离性能,常被作为促进传质的载体引入到膜体系。本文介绍了胺基材料促进CO_(2)传质的机理,重点归纳了胺基材料引入到膜体系的4类方法(涂覆法、反应法、接枝法、掺杂法)及制备膜材料的性能,并分析其优势与不足。本文指出胺基材料促进CO_(2)传质机理需要进一步探索,强调开发高胺基密度的膜材料和以更加“牢固”的方式将胺基材料引入膜体系是领域未来需重点发展的方向,利用机器学习提高膜材料设计效率对该领域发展具有指导意义。分析表明真实工况下胺基膜材料的性能稳定性、设备稳定性以及工艺稳定性是值得关注的研究领域,建立完整的胺基膜法CO_(2)捕集技术链仍面临巨大挑战。

关键词：传质二氧化碳捕集分离膜烟道气胺基材料

液压平推CNG子站改造为标准CNG子站的建议

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石油库与加油站 2020年第2期29卷 13-16,I0010页

作者：胥泽文中国石化重庆石油分公司重庆400010

针对目前液压平推式CNG子站存在的诸多问题和其管束拖车有待更新的情况,在简要介绍液压平推CNG加气子站和标准CNG子站的工作原理、特征并对两者进行比较后叙述了将前者改为后者的必要性,提出了改造为标准子站的方案和对投资的经济分析,... 详细信息

针对目前液压平推式CNG子站存在的诸多问题和其管束拖车有待更新的情况,在简要介绍液压平推CNG加气子站和标准CNG子站的工作原理、特征并对两者进行比较后叙述了将前者改为后者的必要性,提出了改造为标准子站的方案和对投资的经济分析,表明改造后可以节约运输费用46%,引入公交车加气后销量可增加20%,提高市场竞争力,并且能够防止管束车气瓶工作压力超过20MPa,减少设备运行故障和安全隐患,改造投资2.68年可收回,企业经济效益较好.

关键词：加气站液压平推子站改造标准子站方案分析

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LNG加气站危险特性与防护措施探讨

安全、健康和环境 2013年第8期13卷 29-31页

作者：胥泽文中国石化重庆石油分公司重庆400010

分析了LNG低温、翻滚、快速相变、快速蒸发扩散等特性,探讨LNG对加气站设备和人员的危害,提出LNG加气站危险性的预防或减缓措施。

关键词：液化天然气加气站低温翻滚快速相变

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加氢站压缩机设计选型的两点建议

石油库与加油站 2021年第4期30卷 14-16,M0003页

作者：胥泽文中国石化重庆石油分公司重庆400010

针对目前加氢站压缩机排气温度过高和卸氢效率低的问题,在简要介绍了加氢站的工艺概况和氢气压缩机使用情况的基础上,提出了加氢站压缩机设计选型的两点建议:一是采用两级或多级压缩,降低各级压缩比,保证排气温度符合标准;二是分进气压... 详细信息

针对目前加氢站压缩机排气温度过高和卸氢效率低的问题,在简要介绍了加氢站的工艺概况和氢气压缩机使用情况的基础上,提出了加氢站压缩机设计选型的两点建议:一是采用两级或多级压缩,降低各级压缩比,保证排气温度符合标准;二是分进气压力段设计压缩机级数,保证加氢站的安全运行。

关键词：加氢站压缩机设计选型建议

蓝莓花色苷聚电解质复合物制备及降脂活性比较

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现代食品科技 2024年第4期40卷 35-45页

作者：尹朝春李环通许泽文陈丹妮王赛男肖苏尧华南农业大学食品学院广东省功能食品活性物重点实验室广东广州510642 广东茂名农林科技职业学院食品工程系广东茂名525024 华润怡宝饮料(中国)有限公司广东深圳518055

为提高蓝莓花色苷的稳定性和活性,该研究利用大豆分离蛋白和阿拉伯胶构建大豆分离蛋白/阿拉伯胶聚电解质负载蓝莓花色苷体系并进行表征,并对复合物的细胞降脂活性进行了较研究。在超声功率180 W、壁材质量比为10:4、壁芯质量比为10:1、... 详细信息

为提高蓝莓花色苷的稳定性和活性,该研究利用大豆分离蛋白和阿拉伯胶构建大豆分离蛋白/阿拉伯胶聚电解质负载蓝莓花色苷体系并进行表征,并对复合物的细胞降脂活性进行了较研究。在超声功率180 W、壁材质量比为10:4、壁芯质量比为10:1、包埋时间为1.0 h的条件下,得到包埋率为66.05%,ζ-电位为1比9.00 mV,平均粒径为2.53μm的不规则球状物,此条件下制备的复合物,在模拟胃液和肠液中2 h的释放率为71.05%、61.04%,比游离花色苷降低了19.16%、30.50%。通过HepG2细胞模型,检测TG、TC、SOD、MDA含量,结果发现,复合物的降脂活性优于游离花色苷,当花色苷质量浓度在50μg/mL时,复合物组的TC、TG、MDA含量为0.19 mmol/g prot、0.21 mmol/g prot、10.58 nmol/mg prot,比游离花色苷组下降9.70%、14.21%、17.12%;SOD酶活力为25.25 U/mg prot,比游离花色苷组提高9.54%。表明大豆分离蛋白和阿拉伯胶可高效结合花色苷,形成稳定的复合物,并具有良好的体外缓释效果,且复合物降脂活性高于游离花色苷。该研究可为后续开发降脂产品提供理论依据。

关键词：蓝莓花色苷聚电解质大豆分离蛋白阿拉伯胶

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迷迭香提取物对紫苏籽油的抗氧化研究

食品科技 2020年第3期45卷 213-218页

作者：李环通许泽文郭晓敏杨佩莹曹庸肖苏尧华南农业大学食品学院广东省功能食品活性物重点实验室广东广州510642

为研究迷迭香提取物能否替代人工合成抗氧化剂,成为紫苏籽油的天然抗氧化剂。以过氧化值和酸价为评价指标,采用Schaal烘箱法研究迷迭香提取物对紫苏籽油的抗氧化作用,并与市面上常用的人工合成抗氧化剂(2,6-二叔丁基对甲苯酚、丁基羟基... 详细信息

为研究迷迭香提取物能否替代人工合成抗氧化剂,成为紫苏籽油的天然抗氧化剂。以过氧化值和酸价为评价指标,采用Schaal烘箱法研究迷迭香提取物对紫苏籽油的抗氧化作用,并与市面上常用的人工合成抗氧化剂(2,6-二叔丁基对甲苯酚、丁基羟基茴香醚、2-叔丁基对苯二酚)作为对照,测定氧化作用后油样过氧化值及酸价,对比它们在紫苏籽油中的抗氧化效果。采用高效液相色谱法(HPLC)检测紫苏籽油样中鼠尾草酸含量,研究鼠尾草酸含量与紫苏籽油的抗氧化作用的相互影响。结果表明:迷迭香提取物在紫苏籽油中具有良好的抗氧化效果,选择0.08%迷迭香提取物作为在紫苏籽油抗氧化保护的最佳添加量;相比于2,6-二叔丁基对甲苯酚、丁基羟基茴香醚、2-叔丁基对苯二酚,迷迭香提取物为仅次于2-叔丁基对苯二酚的紫苏籽油中最高效的天然抗氧化剂;确定鼠尾草酸是迷迭香提取物中的主要抗氧化有效成分中的一种。

关键词：迷迭香提取物紫苏籽油抗氧化