Potassium-ion hybrid capacitors (PIHCs) have received widespread attention as promising candidates for commercial flexible wearable devices, but are limited by the non-foldability, slow kinetics, and low ion storage capacity of the electrode materials currently not available for practical applications. In this work, surfacefunctionalized foldable porous carbon nanofiber (APCNF) mats with fast reaction kinetics and high K+ storage capacity are prepared as cathode materials for PIHCs. APCNF exhibits superior electrochemical properties and shows notable application advantages in foldable electronic device applications. The capacity retention of self-supported APCNFsIIpotassium foil cells is 89 % after 5000 cycles, and the capacity retention of foldable PIHCs is close to 99 % after 500 cycles at 5 A g-1. In-situ EIS, distribution relaxation time (DRT) analysis and kinetic measurements indicate that surface functionalization enhances the electrode reaction and charge transport kinetics. Theoretical calculations reveal that oxygen functional groups not only enhance the electronic interactions between the substrate and K+, but also lower the K+ diffusion energy barrier. This work provides valuable guidance for the development of high performance foldable electronic energy storage devices.
In the context of 'energy shortage', developing a novel energy-based power system is essential for advancing the current power system towards low-carbon solutions. As the usage duration of lithium-ion batteries for energy storage increases, the nonlinear changes in their aging process pose challenges to accurately assess their performance. This paper focuses on the study LiFeO4(LFP), used for energy storage, and explores their performance degradation mechanisms. Furthermore, it introduces common battery models and data structures and algorithms, which used for predicting the correlation between electrode materials and physical parameters, applying to state of health assessment and thermal warning. This paper also discusses the establishment of digital management system. Compared to conventional battery networks, dynamically reconfigurable battery networks can realize real-time monitoring of lithium-ion batteries, and reduce the probability of fault occurrence to an acceptably low level.
Silicon (Si) is a promising anode material for next-generation lithium-ion batteries (LIBs) with its high theoretical specific capacity (4200 mAh/g). However, Si anode has a huge volume change rate (> 300
Ni-rich cathode materials with high nickel and low cobalt are currently developing for lithium-ion batteries, aiming to increase energy density of the nickel-cobalt-manganese ternary layer oxide (NCM). However, the practical application of Ni-rich cathode materials is hindered by limited cycle stability, which arises from their inherent structural instability during the cycling process. Through layer-by-layer codeposition followed by hightemperature sintering, we design a concentration gradient core-shell structure consisting of a nickel-rich core with a Ni:Co:Mn mole ratio of 9:0.5:0.5, two interlayers with increasing Mn content gradient, and a highmanganese thin shell (CG-NCM). The structure demonstrates a stabilized lattice configuration and a decreased degree of Li+/Ni2+ mixing during electrochemical cycling. The XRD, XPS, TEM results are consistent with the findings from the first principles calculations, indicating a significant reduction in the mixing of lithium and nickel within the layer structure, thereby improving conductivity and structural stability. Remarkably, CG-NCM exhibits a capacity retention of 96.26 % after 100 cycles at 1C, whereas unmodified Li(Ni0.794Co0.11Mn0.096)O2 (CC-NCM) only retains 80.25 % of its capacity. This study shows that CG-NCM has excellent structural, electrochemical and thermodynamic properties, and its gradient structure design provides a broad prospect for the development of high-stability cathode materials for lithium-ion batteries.
目的 顺应军队编制体制改革后军队疗养机构的业务质量管理要求,解决《军队疗养院信息系统》数据管理中的制约因素,探寻其优化路径,提升疗养机构医疗数据的客观合理性、全面系统性及质量管理水平.方法 依据军队疗养机构的隶属关系、规模、人员及职能任务变化,对该系统的应用实践进行回顾性分析,剖析《军队疗养院信息系统》数据应用中存在问题及形成原因;对如何更好地利用标准化、自动化、智能化信息技术为军队疗养机构的管理决策、临床诊疗、疗效评价、科学研究、业务拓展、经济核算等业务管理提供科学的数据支撑,真正实现系统数据应有的临床应用价值,进行优化路径探索.结果 ①明晰了《军队疗养院信息系统》数据应用存在的主要问题:系统模块不足,数据提取局限;内部局域系统,交互共享困难;统计功能不足,数据分析受限.②分析了其产生的主要原因:专业人才缺乏,应用管理薄弱;系统版本较低,更新完善迟缓;系统未能联网,数据格式不能统一.③探索了其主体优化路径:夯实人才基础,提升军队疗养机构信息应用能力;加强顶层设计,构建全军疗养机构信息数据平台;注重应用研究,不断完善军队疗养机构信息系统;实施信息共享,提高军队疗养机构综合保障能力;拓展适用领域,增强军队疗养机构信息系统的实用性.结论 《军队疗养院信息系统》数据应用优化路径,是推进军队疗养机构信息化建设,更好履行军队卫勤变革后军队疗养机构职能任务的有效路径.
目的:探讨细节管理引入消毒供应室护理管理的效果.方法:2020年1月-12月我疗养中心消毒供应室施行细节管理,此期间收治的疗养员180例当作研究组.2019年1月-12月我疗养中心消毒供应室实施常规护理管理,此期间收治的疗养员180例当作对照组.比较两组护理管理成效.结果:研究组的院感率低于对照组,P<0.05.研究组的护理质量评分高于对照组,P<0.05.结论:细节管理可提高消毒供应室的护理管理水平,降低院感率,值得应用推广.
目的 讨论在特勤疗养员疗养时,心理护理的措施及效果.方法 选择本疗养院2018年4月至2019年4月收治的78例特勤疗养员,按护理方式差异分组各39例,对照组接受常规疗养护理,研究组加强心理护理,对比两组干预结局.结果 干预后研究组与对照组相比,心理状态及自我和谐度的评分显著降低,P<0.05.结论 应用心理护理干预,能够使疗养员的心理状况得到显著改善,对提高医疗服务满意度具有积极作用.
目的 讨论心理干预对特勤疗养员心理状态恢复的影响.方法 将某疗养院2018年3月-2020年3月接收的122例特勤疗养员,随机分组各61例,对照组施以常规护理,研究组在其基础上加强心理护理,比较两组干预效果.结果 研究组的心理状态评分低于对照组,P<0.05.研究组的护理满意度(95.08%)高于对照组(83.61%),P<0.05.结论 在特勤疗养员护理中加强心理干预,能够帮助其恢复心理状态,提高医疗服务满意度,值得临床应用.
本篇文章主要分析了文职护士战伤救护现状,讨论文职护士参与战伤救护中存在的相应问题,针对问题进行相关培训,通过各种形式考察文职护理战伤救护技术与知识的掌握程度,使每一位文职护士都能够熟练掌握战伤救护技能,真正做到平时有训练,战时有保障.
Hard carbon is promising anode for potassium-ion batteries (PIBs), however, the poor rate capability hinders its development as potential anode. To address this question, we design a sulfur-doped porous hard carbon (S-HC) for PIBs through the combination of structural design and composition adjustment. The as-designed S-HC exhibits a long cycling life with similar to 191 mAh/g after 300 cycles at 1 A/g, and an excellent rate capability with similar to 100 mAh/g at 5 A/g, which was attributed to its structural characteristics and compositions. The S-HC demonstrates to be promising anode in the future. (C) 2019 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
Supercapacitors are favorable energy storage devices in the field of emerging energy technologies with high power density, excellent cycle stability and environmental benignity. The performance of supercapacitors is definitively influenced by the electrode materials. Nickel sulfides have attracted extensive interest in recent years due to their specific merits for supercapacitor application. However, the distribution of electrochemically active sites critically limits their electrochemical performance. Notable improvements have been achieved through various strategies such as building synergetic structures with conductive substrates, enhancing the active sites by nanocrystallization and constructing nanohybrid architecture with other electrode materials. This article overviews the progress in the reasonable design and preparation of nickel sulfides and their composite electrodes combined with various bifunctional electric double-layer capacitor (EDLC)-based substances (e.g., graphene, hollow carbon) and pseudocapacitive materials (e.g., transition-metal oxides, sulfides, nitrides). Moreover, the corresponding electrochemical performances, reaction mechanisms, emerging challenges and future perspectives are briefly discussed and summarized. This review presents the progress in the reasonable design and preparation of nickel sulfides and their applications in electrochemical capacitors. The corresponding electrochemical performances, reaction mechanisms, emerging challenges, and future perspectives are briefly discussed and summarized.
介绍了移动急救单元的主要组成,分析了其在8次临床实际应用和19次模拟演练中存在的问题,指出了疗养专业局限、人才梯队断层及设备来源特殊为主要原因.提出了不断充实完善移动急救单元信息化、标准化建设,加强与专家、医院、科研院所多方协作攻关,强化在军地疗养系统、非医疗机构及野战救治训练中的推广应用等对策,以获得最佳的应用效益.
在我国护理专业中,护理管理是非常重要的一部分.在护理工作中,疗养院科室护理时重要基础,疗养院服务质量、管理水平深受护理管理质量的影响.所以,在实际疗养院护理管理工作中,一定要对护理服务意识进行增强,对护理人员进行经常性思想教育,强化服务意识,对护理管理制度进行有效完善,这样才能够对疗养院护理管理的整体效能进行有效提高.
Hard carbon is regarded as promising anode materials for potassium-ion batteries(KIBs) owing to their low price and easy availability.However,the limited rate capability still needs to be improved.Herein,we demonstrate the fabrication of oxygen/sulfur co-doped hard carbon through a facile hydrolyzationsulfuration process of skimmed cotton.The simultaneous dopants significantly improve potassium ion diffusion rate.When served as the anode for KIBs,this hydrolyzed hard carbon delivered a high reversible capacity(409 mAh/g at 0.1 A/g),superior rate capability(135 mAh/g at 2 A/g) and excellent cyclability(about 120 mAh/g overt 500 cycles at 2 A/g).This work provides a facile strategy to prepare low-cost doped-hard carbon with superior potassium storage property.
本文系统分析了疗养院应急救治方面的现状与发展需求,认为构建移动急救单元能够满足特定的疗养需求,显著提升疗养院应急救治能力,并采用模拟现场急救演练的方式加以验证:对应用移动急救单元前后携带急救药品器材的所需人数、携带急救药品器材的遗漏率、急救反应时问、模拟演练的考核成绩进行对比分析,结果显示,应用移动急救单元后,携带急救药品器材的所需人数减少、携带急救药品器材的遗漏率降低、模拟演练的考核成绩提高.
疗养员的意见建议既是对疗养保障工作的评价,更是加强疗养服务质量控制的客观依据.因此,要不断提高疗养保障水平,笔者认为应高度重视疗养员意见建议的收集汇总及分析,对疗养员医、食、住、行、娱等各个环节进行持续改进,进而提高疗养保障的质量效益,同时,进一步探讨了建立疗养员意见建议反馈落实长效机制的意义.
沟通是人与人之间信息的传递与交流,掌握沟通技巧有利于护士更全面地了解病人信息资料,有利于护理评估的进行及护理计划的制度与实施,更有利于健康教育的发展.成功的沟通可以建立一个良好的护患关系,使病人的心理调节到最佳的治疗状态,以达到促进病人早日康复的目的.
急救药品器材装箱化是构成疗养院移动急救单元[1]的基础,是实现急救药品器材既能车载机动又能人力携行的关键,必须在不断实践改进中想细做实. 1 急救药品器材装箱化的原则 在严格遵循医护常规的前提下,急救药品器材装箱化的原则是够用、轻便、自给、应变、分类.够用即够诊断、够定性就行,够现场急救、够途中救护就行[2],不求新奇特;轻便即争取微型化便携式,争取一装就能走、一放就能用,不过度求全;自给即尽可能自带动力源,尽可能既能车载机动又能人力携行,不苛求外部支撑条件;应变即随现场急救情形、器材外形尺寸而变,随临床经验积累而不断改进提高,不一成不变;分类即按学科功能分类,按处置需求分类,不无序堆砌.
Objective To extend the auxiliary functions of the first-aid chest in the mobile emergency unit.Methods The auxiliary functions were designed from the aspects of supporting medical documents,CPR board,leakproof piecework card,time display,low light illumination,medical wastes recovery,adjustable perfusion support and medical console with considerations on standardized operation,requirements of medical treatment in field conditions as well as technical characteristics of mobile emergency unit.The weight and volume of the chest had no growth during the extension of the auxiliary functions.Results The extended auxiliary functions of the chest improved the mobile emergency unit in adaptability to field conditions and field medical treatment.Conclusion The extension of the auxiliary functions contributes to the optimization of the mobile emergency medical unit,and thus is worthy promoting in field first aid of the sanatorium and hospital.
本文从疗养院现场急救的实际情况出发,分析论证了设计疗养院移动急救单元医疗文书的必要性,模式化地制定了疗养院移动急救单元的急救医疗文书,并详细地阐明了应用的要点,为构建疗养院移动急救单元提供了良好的软件基础。