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Soft multifunctional neurological electronic skin through intrinsically stretchable synaptic transistor

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Nano Research 2024年第7期17卷 6550-6559页

作者： Pengcheng Zhu Shuairong Mu Wenhao Huang Zeye Sun Yuyang Lin Ke Chen Zhifeng Pan Mohsen Golbon Haghighi Roya Sedghi junlei wang Yanchao Mao Key Laboratory of Materials Physics of Ministry of Education School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450001China School of Mechanical and Power Engineering Zhengzhou UniversityZhengzhou 450001China Department of Chemistry Shahid Beheshti UniversityTehran ***Iran

Neurological electronic skin(E-skin)can process and transmit information in a distributed manner that achieves effective stimuli perception,holding great promise in neuroprosthetics and soft *** E-skin with multifunctional perception abilities can enable robots to precisely interact with the complex surrounding ***,current neurological E-skins that possess tactile,thermal,and visual perception abilities are usually prepared with rigid materials,bringing difficulties in realizing biologically synapse-like ***,we report a soft multifunctional neurological E-skin(SMNE)comprised of a poly(3-hexylthiophene)(P3HT)nanofiber polymer semiconductor-based stretchable synaptic transistor and multiple soft artificial sensory receptors,which is capable of effectively perceiving force,thermal,and light *** stretchable synaptic transistor can convert electrical signals into transient channel currents analogous to the biological excitatory postsynaptic *** it also possesses both short-term and long-term synaptic plasticity that mimics the human memory *** integrating a stretchable triboelectric nanogenerator,a soft thermoelectric device,and an elastic photodetector as artificial receptors,we further developed an SMNE that enables the robot to make precise actions in response to various surrounding *** with traditional neurological E-skin,our SMNE can maintain the softness and adaptability of biological synapses while perceiving multiple stimuli including force,temperature,and *** SMNE could promote the advancement of E-skins for intelligent robot applications.

关键词： electronic skin soft stretchable polymer semiconductor synaptic transistor multifunctional

Effect of Modified Biochar with Organic Fertiliser on the Growth and Development of Chinese Rose

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Advances in Bioscience and Biotechnology 2024年第6期15卷 344-359页

作者： Liyuan Mu Hongyin Zhou junlei wang Sijing Sun Haichan Yang Naiming Zhang Li Bao College of Resources and Environment Yunnan Agricultural University Kunming China Yunnan Engineering Research Centre for Soil Fertilisation and Pollution Remediation Kunming Yunnan School of Plant Protection Yunnan Agricultural University Kunming China

In order to reduce the waste of resources and environmental pollution caused by excessive application of chemical fertilizers, improve the utilization rate of fertilizers, and promote the large-scale and high-quality development of the Chinese rose industry. In this experiment, corn stover biochar, phosphoric acid modified biochar and organic fertilizer were used as test materials, and the effects of mixed application of modified biochar and organic fertilizer on the growth and development of Chinese rose as well as soil physicochemical properties were investigated by using the method of pot planting test. The results showed that modified biochar with organic fertilizer had the most significant effect on the enhancement of soil pH, organic matter content and soil carbon-to-nitrogen ratio. After 120 d of planting, modified biochar with organic fertilizer had the most significant effect on the enhancement of plant height and crown width of Chinese rose;both organic fertilizer and modified biochar with organic fertilizer significantly increased the chlorophyll content of Chinese rose. The number of flowers and the number of branches were the highest in the modified biochar with organic fertilizer treatment. In conclusion, the application of modified biochar with organic fertilizer can better improve the soil pH, and increase the soil organic matter content and carbon-to-nitrogen ratio to change the biological traits of Chinese rose. The results of this study provide a theoretical basis for the reduction of chemical fertilizers and the resource utilization of agricultural wastes and guarantee the sustainable development of the cut flower industry.

关键词： Biochar Modified Biochar Chinese Rose Organic Fertiliser

杀菌剂THPS对X80管线钢应力腐蚀开裂影响及机理研究

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表面技术 2024年第20期53卷 69-81页

作者：杨吉可李众王军磊娄云天李晓刚北京科技大学新材料技术研究院腐蚀与防护中心北京100083 国家材料腐蚀与防护科学数据中心北京100083 军事科学院国防工程研究院河南洛阳471000

目的研究杀菌剂THPS对X80管线钢应力腐蚀开裂的影响及机理。方法 37℃下,将X80钢U弯和10 mm×10 mm平片浸泡在接种了硫酸弧菌(Desulfovibrio vulgaris)的150 mL ATCC 1249培养基(添加杀菌剂THPS质量浓度为0、15、30、45、60 mg/L)中培... 详细信息

目的研究杀菌剂THPS对X80管线钢应力腐蚀开裂的影响及机理。方法 37℃下,将X80钢U弯和10 mm×10 mm平片浸泡在接种了硫酸弧菌(Desulfovibrio vulgaris)的150 mL ATCC 1249培养基(添加杀菌剂THPS质量浓度为0、15、30、45、60 mg/L)中培养14 d。通过细胞计数实验、失重测试、H2S和H2测量、扫描电子显微镜(SEM)测试、激光共聚焦荧光显微镜(CLSM)测试、开路电位(OCP)、电化学阻抗(EIS)、线性极化电阻(LPR)、动电位极化测试、热力学计算和光电子能谱仪XPS,分别对X80钢在不同浓度杀菌剂含量的***中的腐蚀活动、应力腐蚀开裂裂纹生长情况、杀菌剂对生物膜的影响以及腐蚀产物进行分析。结果失重、固着细胞计数和浮游细胞计数3项数据均呈现随着THPS浓度升高而下降的趋势。同时,SEM也可以观察到X80钢U弯在不同浓度下的THPS中形成的裂纹长度随着THPS的浓度增大呈减小趋势。OCP、EIS、LPR和动电位极化结果证实了杀菌剂THPS浓度增加导致微生物腐蚀活动下降,而较慢的微生物腐蚀活动减缓了X80钢的应力腐蚀开裂。通过理论计算确定了THPS对X80钢U弯的吸附类型。结论杀菌剂THPS对SRB具有有效杀灭和驱散作用,从而减缓了X80钢的应力腐蚀开裂,THPS对X80钢U弯的吸附类型为静电导致的物理吸附和电荷交换导致的化学吸附二者兼有。

关键词：微生物腐蚀硫酸盐还原菌应力腐蚀开裂杀菌剂

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火焰喷雾热解法生产锂离子电池高镍三元正极材料的技术经济分析

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储能科学与技术 2024年第1期13卷 345-357页

作者：杜文王君雷徐运飞李世龙王昆天津大学先进内燃动力全国重点实验室天津300354

正极材料约占锂离子电池制造成本的三成,是影响动力电池价格的主要因素;采用火焰喷雾热解法生产三元正极材料能耗低、设备少,可降低锂离子电池的制造成本。本文研究的主要目标是定量评估采用火焰喷雾热解法生产高镍三元正极材料的技术... 详细信息

正极材料约占锂离子电池制造成本的三成,是影响动力电池价格的主要因素;采用火焰喷雾热解法生产三元正极材料能耗低、设备少,可降低锂离子电池的制造成本。本文研究的主要目标是定量评估采用火焰喷雾热解法生产高镍三元正极材料的技术经济可行性。计算火焰喷雾热解法生产LiNi_(0.8)Co_(0.1)Mn_(0.1)O(2)(NCM811)的原料、燃料、排放产物质量流量和盈亏平衡条件下的最低销售价格,并与传统共沉淀法比较。技术分析中物料与能量平衡计算结果表明,火焰喷雾热解法可使CO_(2)排放、电力消耗和用水消耗分别降低约41%、85%和29%。经济分析结果显示,盈亏平衡条件下NCM811材料的最低售价为221.1 CNY/kg,较当前市场销售价低约18%。最后,针对材料最低售价的敏感性分析结果显示,原材料成本是最敏感的因素,当原料价格降低25%时,盈亏平衡点售价可达172.0 CNY/kg。

关键词：火焰喷雾热解技术经济分析高镍三元正极材料锂离子电池

Erratum to:Soft multifunctional neurological electronic skin through intrinsically stretchable synaptic transistor

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Nano Research 2024年第9期17卷 8652-8652页

The original article has been corrected due to the incorrect PDF uploaded by the vendor's production.

关键词： stretch intrinsic electronic

火焰喷雾热解制备锂离子电池三元正极材料研究进展

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化工进展 2024年第2期43卷 971-983页

作者：陈国徽王君雷李世龙李金宇徐运飞罗俊潇王昆天津大学先进内燃动力全国重点实验室天津300072

电化学储能技术的发展与电动汽车的大规模应用可有效降低碳排放;锂离子电池能量密度高,循环寿命长,是锂电储能技术与电动汽车的核心部件,其容量的提升主要受到正极材料的限制;锂离子电池三元正极材料具有污染小、成本低、性能高、容量... 详细信息

电化学储能技术的发展与电动汽车的大规模应用可有效降低碳排放;锂离子电池能量密度高,循环寿命长,是锂电储能技术与电动汽车的核心部件,其容量的提升主要受到正极材料的限制;锂离子电池三元正极材料具有污染小、成本低、性能高、容量大等方面的优点。传统液相法和高温固相法制备三元正极材料步骤烦琐、耗时长,不利于工业放大;火焰喷雾热解方法(flame spray pyrolysis,FSP)可一步制备三元正极材料,合成效率高,合成过程中无废液产生,对环境友好且易于工业化放大生产,近年来受到广泛关注。本文综述了近几年FSP方法制备三元正极材料的研究进展,首先简要介绍了FSP的发展简史、基本原理、典型装置和主要优势,其次展开分析了前体溶液组成、温度条件以及退火条件等制备条件对三元正极材料组成、结构、微观形貌以及电化学性能的影响,然后简述了FSP在三元正极材料改性和沉积技术方面的最新研究进展,最后展望了FSP制备三元正极材料的未来发展趋势。

关键词：火焰喷雾热解锂离子电池三元正极材料电化学性能

无钴富镍正极材料的火焰辅助喷雾热解合成与性能研究

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新能源进展 2024年第3期12卷 260-268页

作者：陈国徽王君雷李世龙李金宇徐运飞王昆天津大学先进内燃动力全国重点实验室天津300072

锂离子电池富镍三元正极材料因其成本低、容量高的优势受到广泛关注,受限于钴的高毒性、低储量,富镍正极材料无钴化成为锂离子电池未来的发展趋势。传统液相法制备无钴富镍材料存在步骤繁琐、耗时长、副产物多等问题。火焰辅助喷雾热解(... 详细信息

锂离子电池富镍三元正极材料因其成本低、容量高的优势受到广泛关注,受限于钴的高毒性、低储量,富镍正极材料无钴化成为锂离子电池未来的发展趋势。传统液相法制备无钴富镍材料存在步骤繁琐、耗时长、副产物多等问题。火焰辅助喷雾热解(FASP)方法可一步合成正极材料,具有设备简单、耗时短、环境友好等优点。采用FASP方法制备LiNi_(0.8)Mn_(0.2)O_(2)(NM82)无钴富镍正极材料,探究合成条件对NM82结构、形貌和电化学性能的影响。结果表明,FASP可一步合成NM82正极材料,且其在载气流速1.5L/min、锂过量10%、退火温度800℃条件下的锂镍混排水平最低,放电比容量最高,在0.1C倍率下达到180.2mA∙h/g。

关键词：火焰辅助喷雾热解无钴富镍正极材料锂离子电池电化学性能

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复兴高含蜡页岩油冷输集输工艺关键参数确定

油气储运 2024年第7期43卷 809-818页

作者：王欣陶敏峰俞徐林王俊磊黄启玉谢成杰梁艳中石化江汉石油工程设计有限公司中国石油大学(北京)机械与储运工程学院

【目的】中国石化复兴地区含凝析气轻质页岩油具有凝点高、含蜡量高的特点,易凝易结蜡。随着页岩油气生产时间增加,油井产量、含水率显著下降,加之油区自然条件差、高程落差大等不利因素,给页岩油气冷输(析蜡点以下)集输工艺带来巨大技... 详细信息

【目的】中国石化复兴地区含凝析气轻质页岩油具有凝点高、含蜡量高的特点,易凝易结蜡。随着页岩油气生产时间增加,油井产量、含水率显著下降,加之油区自然条件差、高程落差大等不利因素,给页岩油气冷输(析蜡点以下)集输工艺带来巨大技术挑战。【方法】在分析复兴含蜡页岩油基础物性的基础上,研究低温流动条件下的油品黏度、屈服应力变化规律及含蜡页岩油乳化特征,揭示页岩油低温流动特性。分析集输工艺过程热处理温度、含凝析气及剪切作用等因素对页岩油凝点的影响,并探究不同含水率、不同溶气压力下的油品粘壁规律,得到影响管道安全输送的关键基础数据。【结果】复兴高含蜡页岩油为乳化能力较弱的轻质油,无法形成含水率大于20%的稳定乳状液,其黏度相对较低。热处理温度与剪切作用对该油品凝点几乎无影响,但油中轻组分的挥发性对凝点有很大影响,轻组分挥发会导致凝点大幅上升5℃。临界粘壁温度随含水率升高呈下降趋势,变化范围为13~18℃。随着溶气压力增加,低温流动条件下页岩油粘壁温度与黏度降低,流动性变好。冷输集输管道终点温度应高于临界粘壁温度,因此确定复兴高含蜡页岩油冷输集输终点最低温度为18℃,终点压力应不低于1.0 MPa。【结论】研究成果可为复兴地区高含蜡页岩油冷输集输工艺提供数据支撑,对高效开发非常规油气资源具有重要意义。

关键词：含蜡页岩油粘壁规律粘壁温度冷输集输关键参数

Design,modeling and experiments of broadband tristable galloping piezoelectric energy harvester

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Acta Mechanica Sinica 2020年第3期36卷 592-605页

作者： junlei wang Linfeng Geng Shengxi Zhou Zhien Zhang Zhihui Lai Daniil Yurchenko Engineering Research Center of Energy Saving Technology and Equipment of Thermal Energy System Ministry of EducationZhengzhou 450000China School of Aeronautics Northwestern Polytechnical UniversityXi'an 710072China William G.Lowrie Department of Chemical and Biomolecular Engineering The Ohio State UniversityColumbusOH 43210USA Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering College of Mechatronics and Control EngineeringShenzhen UniversityShenzhen 518060China Institute of Mechanical Process&Energy EngineeringHeriot-Watt UniversityEdinburgh EH 144ASUK

Galloping based piezoelectric energy harvester is a kind of micro-environmental energy harvesting device based on flowinduced vibrations.A novel tristable galloping-based piezoelectric energy harvester is constructed by introducing a nonlinear magnetic force on the traditional galloping-based piezoelectric energy *** on Euler-Bernoulli beam theory and Kirchhoff’s law,the corresponding aero-electromechanical model is proposed and validated by a series of wind tunnel *** parametric study is performed to analyse the response of the tristable galloping-based piezoelectric energy *** results show that comparing with the galloping-based piezoelectric energy harvester,the mechanism of the tristable galloping-based piezoelectric energy harvester is more *** the increase of a wind speed,the vibration of the bluff body passes through three branches:intra-well oscillations,chaotic oscillations,and inter-well *** threshold wind speed of the presented harvester for efficiently harvesting energy is 1.0 m/s,which is decreased by 33% compared with the galloping-based piezoelectric energy *** maximum output power of the presented harvester is 0.73 mW at 7.0 m/s wind speed,which is increased by 35.3%.Compared with the traditional galloping-based piezoelectric energy harvester,the presented tristable galloping-based piezoelectric energy harvester has a better energy harvesting performance from flow-induced vibrations.

关键词： Energy harvesting Galloping Tristable Flow induced vibrations