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Polydopamine directed MnO@C microstructures as electrode for lithium ion battery

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Science China Chemistry 2016年第1期59卷 122-127页

作者： Delu Li Yejun Zhang Lun Li Feng Hu Hongchao Yang changhong wang Qiangbin wang Key Laboratory.of Nano-Bio Interface Division of Nanobiomedicine and i-LabSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Institute of Nano Science and Technology University of Science and Technology of ChinaSuzhou 215123China

In this work,a facile process was reported to fabricate amorphous carbon-coated MnO micropeanuts(MPs)with 1.8μm in length and 1.0μm in width using hydrothermal reaction followed by heat treatment in the oxygen-free *** Mn Cl_2 and KMnO_4 dissolved in the mixture of ethylene glycol and water,MnCO_3 MP precursors were obtained via the hydrothermal reaction with dopamine as *** MnCO_3 MP was annealed at 600°C in the N_2 atmosphere and was transformed into MnO MP,and simultaneously the formed polydopamine during the hydrothermal reaction was carbonized to produce amorphous carbon-coating on the MnO MP *** contrast,MnCO_3 nanoparticle(NP)precursor was formed without the addition of dopamine and MnO NP agglomerates were prepared after *** carbonization of polydopamine during thermolysis improves the electrical conductivity and thermal stability of the MnO MP and thus its electrochemical performance as electrode materials for lithium ion ***,this facile strategy for fabricating and designing carbon-coated materials would inspire more novel nanostructures and applications thereof.

关键词： micropeanut Mn O lithium ion battery

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锂离子电池浸没式冷却的研究进展

电池 2024年第2期54卷 265-270页

作者：钟恺为王长宏吕琪铭张志会丘榕芳广东工业大学材料与能源学院广东广州510006 广州城投综合能源投资经营管理有限公司广东广州510006

浸没式冷却是极具潜力的热管理技术之一。罗列浸没式冷却的优势,描述浸没式冷却的工作机理,归纳目前常用的冷却工质,讲述冷却工质改性的作用。介绍浸没式冷却技术的研究进展,梳理调整流道结构与传热附件以增强冷却性能的研究。对浸没式... 详细信息

浸没式冷却是极具潜力的热管理技术之一。罗列浸没式冷却的优势,描述浸没式冷却的工作机理,归纳目前常用的冷却工质,讲述冷却工质改性的作用。介绍浸没式冷却技术的研究进展,梳理调整流道结构与传热附件以增强冷却性能的研究。对浸没式冷却抑制热失控的机理进行初步探讨。将浸没式冷却技术未来的发展分为3个研究方向,分别为冷却工质改性、调整结构参数以强化系统的冷却性能、浸没式冷却抑制热失控机理的研究。

关键词：锂离子电池冷却工质浸没式冷却热失控结构优化冷却机理

Adaptive fuzzy sliding mode control of Lorenz chaotic system

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Frontiers of Electrical and Electronic Engineering in China 2007年第3期2卷 277-281页

作者： WU Ligang wang changhong The Space Control and Inertial Technology Research Center Harbin Institute of TechnologyHarbin 150001China

By using the exponential reaching law technology,a sliding mode controller was designed for Lorenz chaotic system subject to an unknown external *** this basis,considering the unknown disturbance,an adaptive law was introduced to adaptively estimate the parameters of the disturbance ***,to eliminate the chattering resulting from the discontinuous switch controller and to guarantee system transient performance,a new adaptive fuzzy sliding mode controller was *** results of the simulation show the effectiveness of the proposed control scheme.

关键词： Lorenz chaotic system reaching law sliding mode control adaptive law fuzzy logic

An Approach to the Design of Learning Controllers

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哈尔滨工业大学学报 1990年第3期22卷 84-91页

作者： wang changhong Zhang Fuen(School of Astronautics)

In this paper an approach to the design of learning controllers is studied. The conditions for the convergence of control errors are given by using the Banach Contraction Mapping Theorem It is proved that the design of leaming controllers can be equivalent to that of conventional feedback controllers in a certain sense. Finally, the theoretical results are vcrificd by some design examples of the SISO system, and the simulation results are given herewith.

关键词：学习机学习控制压缩映射不动点设计 SISO系统

运动疗法对轻中度抑郁症患者抑郁症状和睡眠质量及认知功能改善的效果分析

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中华精神科杂志 2024年第5期57卷 298-304页

作者：刘聪王慧颖冀紫阳张晓莉付怡芳谷景阳张建宏王长虹新乡医学院第二附属医院精神科新乡453002

目的探究有氧运动疗法和无氧运动疗法对轻中度抑郁症患者抑郁症状、睡眠质量及认知功能改善的效果。方法前瞻性收集2019年2月至2023年5月在新乡医学院第二附属医院住院治疗的共148例轻中度抑郁症患者的临床资料,其中男74例,女74例,年龄1... 详细信息

目的探究有氧运动疗法和无氧运动疗法对轻中度抑郁症患者抑郁症状、睡眠质量及认知功能改善的效果。方法前瞻性收集2019年2月至2023年5月在新乡医学院第二附属医院住院治疗的共148例轻中度抑郁症患者的临床资料,其中男74例,女74例,年龄18~60(40.08±11.03)岁。采用随机数字表法随机分配至常规治疗组(A组,49例)、常规治疗+中等强度有氧运动疗法干预组(B组,51例)、常规治疗+中等强度无氧运动疗法干预组(C组,48例)。对各组患者进行相应干预治疗4周,分别采用24项汉密尔顿抑郁量表(Hamilton Depression Scale-24,HAMD_(24))、匹兹堡睡眠质量指数(Pittsburgh Sleep Quality Index,PSQI)及蒙特利尔认知评估量表(the Montreal Cognitive Assessment,MOCA)在干预前、后对各组患者的抑郁症状、睡眠质量及认知功能进行评分,采用配对样本t检验对干预前后各组患者各量表评分变化进行比较分析,采用单因素方差分析对干预后各组患者各量表评分差异进行分析比较。结果干预后各组患者HAMD_(24)、PSQI评分均较干预前降低[A:HAMD_(24)为(15.08±4.15)分比(29.33±4.75)分,PSQI为(12.76±2.52)分比(14.88±3.64)分;B:HAMD_(24)为(12.82±3.83)分比(28.61±5.08)分,PSQI为(11.59±2.26)分比(14.55±4.14)分;C:HAMD_(24)为(14.44±3.60)分比(29.44±4.98)分,PSQI为(11.40±2.30)分比(15.13±4.62)分](均P<0.001)。干预后各组患者MOCA评分均较干预前升高[A:(26.04±2.21)分比(25.92±2.34)分,t=-2.20,P=0.032;B:(26.22±1.59)分比(25.35±1.95)分,t=-4.45,P<0.001;C:(26.10±2.15)分比(25.21±2.13)分,t=-3.15,P=0.003]。干预后B组HAMD_(24)评分较A组、C组均降低[(12.82±3.83)分比(15.08±4.15)分、(14.44±3.60)分](均P<0.05),B组、C组PSQI评分均较A组降低[(11.59±2.26)分、(11.40±2.30)分比(12.76±2.52)分](均P<0.05)3MOCA评分差异无统计学意义(P=0.906)。结论运动疗法有助于改善轻中度抑郁症患者的抑郁症状和睡眠质量,但在改善认知功能方面无明显优势。

关键词：抑郁症成人运动疗法抑郁症状睡眠认知功能

Current Status and Future Directions in Environmental Stability of Sulfide Solid-State Electrolytes for All-Solid-State Batteries

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Energy Material Advances 2023年第1期4卷 130-143页

作者： Jianwen Liang Xiaona Li changhong wang Jung Tae Kim Rong Yang jiantao wang Xueliang Sun Solid State Batteries Research Center GRINM(Guangdong)Institute for Advanced Materials and TechnologyFoshanGuangdong 528051China Department of Mechanical and Materials Engineering.University of Western Ontario LondonOntario N6A 5B9Canada China Automotive Battery Research Institute Co.Ltd.5th Floor No.43Mining Building North Sanhuan Middle RoadBeijing 100088China

Recently,sulfide-based solid-state electrolytes(SSEs)have attracted much attention owing to their high ionic conductivity and feasible mechanical *** environmental stability of sulfide-based SSEs is one of the critical aspects due to the possible decomposition,and ionic conductivity change will affect the fabrication and electrochemical performance of the ***,important efforts have been made to reveal and improve their environmental stability,and a timely summary of the progress is urgently *** this review,we first clarify the definition of environmental stability and its significance in the context of practical *** indicating the degradation mechanisms of sulfide-based SSEs,we summarize several effective strategies to improve their stability and also highlight the related theoretical *** stability of organic solvents of sulfide SSEs is also summarized and discussed,which may help reliable sulfide SSEs in the battery *** main target of this review is to gain insights and provide useful guidance to further improve the environmental stability of sulfide SSEs,which will finally promote the commercialization of sulfide-based all-solid-state batteries.

关键词： battery Solid sulfide

Promoting nitric oxide electroreduction to ammonia over electron-rich Cu modulated by Ru doping

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Science China Chemistry 2021年第9期64卷 1493-1497页

作者： Jiangwei Shi changhong wang Rong Yang Fanpeng Chen Nannan Meng Yifu Yu Bin Zhang Department of Catalysis Science and Engineering School of Chemical Engineering and TechnologyTianjin UniversityTianjin300072China Institute of Molecular Plus School of ScienceTianjin UniversityTianjin300072China

Electrocatalytic nitric oxide(NO)reduction is a promising strategy to produce *** a facile approach to synthesize efficient catalysts with enhanced NO electroreduction performance is highly ***,a series of Ru-doped Cu materials are constructed through in situ electroreduction of corresponding metal *** optimized Ru_(0.05)Cu_(0.95)exhibits superior electrocatalytic performance for ammonia synthesis by using NO/Ar(1/4,n/n)as the feedstocks(Faradaic efficiency:64.9%,yield rate:17.68μmol cm^(-2)h^(-1)),obviously outperforming Cu counterpart(Faradaic efficiency:33.0%,yield rate:5.73μmol cm^(-2)h^(-1)).Electrochemical in situ Fourier transform infrared(FTIR)spectroscopy and online differential electrochemical mass spectrometry(DEMS)are adopted to detect intermediates and unveil the possible reaction *** downshift of the Cu d-band center induced by Ru doping facilitates the rate-limiting hydrogenation step and decreases the desorption energy of NH_(3),leading to high Faradaic efficiency and yield of ammonia.

关键词： Electrocatalysis NO ammonia synthesis in situ characterizations Ru-doped Cu

All-Solid-State Lithium Metal Batteries with Sulfide Electrolytes:Understanding Interfacial Ion and Electron Transport

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Accounts of Materials Research 2022年第1期3卷 21-32页

作者： changhong wang Keegan Adair Xueliang Sun Department of Mechanical&Materials Engineering University of Western OntarioLondonON N6A 5B9Canada

CONSPECTUS:With the ever-growing demand for high energy density and high safety of energy storage technologies,all-solid-state lithium metal batteries(ASSLMBs)including all-solid-state lithium ion batteries(ASSLIBs)and all-solid-state lithium−sulfur batteries(ASSLSBs)have received considerable attention in recent *** realize ASSLMBs,various solid-state electrolytes have been rapidly *** them,sulfide electrolytes(SEs)demonstrate the highest ionic conductivity(>10 mS·cm−1)and the most favorable mechanical ***,the commercialization of SE-based ASSLMBs has been stymied by sluggish interfacial ion and electron transport kinetics,which arises from the detrimental interfacial reactions,poor interfacial solid−solid contact,and lithium dendrite *** overcome the interfacial challenges,an insightful understanding of the complex interfacial ion and electron transport processes in SE-based ASSLMBs is of the foremost *** most of the previous review papers underscored the interfacial challenges and summarized the corresponding strategies,a fundamental understanding of the interfacial ions and electron-transport kinetics in SE-based ASSLMBs has not yet been *** Account therefore primarily summarizes our recent understanding of SE-based ASSLMBs from the perspectives of interfacial ion and electron transport,aiming to provide an insightful understanding of interfacial *** first compare various solid-state electrolytes including SEs,oxide electrolytes,halide electrolytes,polymer electrolytes,borohydride electrolytes in terms of their ionic conductivity,electrochemical stability windows,and mechanical properties,aiming to justify the advantages of SEs in ***,the interfacial challenges at both cathode and anode interfaces of SE-based ASSLIBs and SE-based ASSLSBs are presented,*** interfacial challenges significantly hinder the interfacial ion and electron *** boost the interfacial c

关键词： lithium kinetics summarized

父母亲情干预联合代币奖励在阑尾炎手术患儿护理中的应用

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保健医学研究与实践 2024年第6期21卷 134-139页

作者：戎艳萍王小倩张伟郭影王常宏朱影安徽省阜阳市人民医院/安徽医科大学附属阜阳人民医院儿外科安徽阜阳236300 安徽省阜阳市人民医院/安徽医科大学附属阜阳人民医院产科安徽阜阳236300 安徽省阜阳市人民医院/安徽医科大学附属阜阳人民医院儿科安徽阜阳236300

目的探讨父母亲情干预联合代币奖励在阑尾炎手术患儿护理中的应用效果,以期为阑尾炎手术患儿护理方案的选择提供参考。方法选取2022年1月—2023年2月于阜阳市人民医院儿外科接受腹腔镜阑尾炎切除术治疗的104例阑尾炎患儿为研究对象,根... 详细信息

目的探讨父母亲情干预联合代币奖励在阑尾炎手术患儿护理中的应用效果,以期为阑尾炎手术患儿护理方案的选择提供参考。方法选取2022年1月—2023年2月于阜阳市人民医院儿外科接受腹腔镜阑尾炎切除术治疗的104例阑尾炎患儿为研究对象,根据患儿家属自愿原则采用非随机临床同期对照研究,将患儿分为对照组和联合组,每组52例。对照组患儿在围手术期接受常规护理干预,联合组患儿在围手术期接受父母亲情干预联合代币奖励干预。比较2组患儿术后恢复情况、并发症发生情况,以及手术前后治疗配合度和心理状态。结果联合组患儿手术后排气时间、排便时间、恢复肠鸣音时间、下床活动时间、进食时间及住院时间均短于对照组,差异均有统计学意义(P0.05);2组患儿术后Fankl治疗依从性量表评分和Houpt行为量表评分均高于术前,且联合组均高于对照组,差异均有统计学意义(P0.05);2组患儿术后SDS和SAS评分均低于术前,且联合组均低于对照组,差异均有统计学意义(P<0.05)。结论对阑尾炎手术患儿给予父母亲情干预联合代币奖励干预,能够促进患儿术后康复,降低并发症发生风险,提高患儿治疗依从性,缓解抑郁及焦虑情绪,值得在临床推广运用。

关键词：父母亲情干预代币奖励阑尾炎患儿术后恢复情况治疗依从性负性情绪