【摘 要】
:
With the development of digital products,electric vehicles and energy storage technology,electronic chemicals play an increasingly prominent role in the field of new energy such as lithium-ion batteries.Electronic chemicals have attracted extensive attent
【机 构】
:
State Key Laboratory of Chemical Engineering,School of Chemical Engineering and Technology,Tianjin U
论文部分内容阅读
With the development of digital products,electric vehicles and energy storage technology,electronic chemicals play an increasingly prominent role in the field of new energy such as lithium-ion batteries.Electronic chemicals have attracted extensive attention in various fields.Characteristics of high-end elec-tronic chemicals are high purity and low impurity content,which requires a very strict separation and purification process.At present,crystallization is a key technology for their separation and purification of electronic chemicals.In this work,the representative fluorine-containing compounds in cathode and anode materials,separator and electrolyte of lithium-ion batteries are introduced.The latest technologies for the preparation and purification of four kinds of fluorine-containing battery chemicals by crystalliza-tion technology are reviewed.In addition,the research prospects and suggestions are put forward for the separation of fluorine-containing battery chemicals.
其他文献
目的 探讨能级管理及绩效考核用于心血管内科护理管理中的效果.方法 选取该院2020年1—11月80例心血管内科患者和护理人员30名,采用随机数字表法分组.参照组40例心血管内科患者和护理人员15名给予常规管理,研究组40例心血管内科患者和护理人员15名给予采取能级管理及绩效考核.比较两组护理人员满意度、护理工作质量得分、护理不良事件发生率.结果 研究组护理人员满意度100.00%(15/15)比参照组60.00%(9/15)高,差异有统计学意义(P=0.022).研究组护理工作质量得分均高于参照组,差异有
Various scaling relations have long been established in the field of heterogeneous catalysis,but the resul-tant volcano curves inherently limit the catalytic performance of catalyst candidates.On the other hand,it is still very challenging to develop univ
Biomanufacturing,which uses renewable resources as raw materials and uses biological processes to pro-duce energy and chemicals,has long been regarded as a production model that replaces the unsustain-able fossil economy.The construction of non-natural an
Microfluidic technology has been successfully applied to determine the reaction kinetics relying on its great characteristics including narrow residence time distribution,fast mixing,high mass and heat trans-fer rates and very low consumption of materials
The rotating packed bed (RPB) has been widely used in gas-liquid flow systems as a process intensifica-tion device,exhibiting excellent mass transfer enhancement characteristics.However,the complex inter-nal structure and the high-speed rotation of the ro
Soil contamination by heavy metals has presented severe risks to human health through food chain.As one of the most promising remediation technologies,in-situ immobilization strategy has been widely adopted in practice.However,considering the large quanti
目的 探讨分析以微课和情景模拟相结合的教学模式在实验诊断学实习教学中的具体应用及教学效果.方法 根据教学大纲编写实习微课及具有临床代表性、应用性的典型病例.于2019年4月—2021年4月以吉林大学白求恩医学院2016级实习学生60名(传统教学方式),及2017级实习学生60名(微课与情景模拟结合教学模式)为研究对象,对两组学生进行调查问卷及分析.结果 学生认为微课与情景模拟相结合的教学方法更利于临床诊断思维的建立,有利于课本知识与实际工作相联系,有利于提高学习兴趣.结论 在实验诊断学实习课教学中利用微课
目的 该文通过探讨标准化病人(SP)结合以病例为基础的学习模式(CBL)在儿科临床技能教学中的应用效果.方法 随机选取2019年7月—2020年7月该院参加住院医师规范化培训的学员40名.抽签法分组:对照组(20名)在住院医师规范化培训儿科临床技能教学中采用传统教学模式,研究组(20名)在儿科临床技能教学中采用SP结合CBL教学法.比较两组教学效果.结果 教学后,研究组教学满意度、临床分析能力评分、临床技能考试成绩高于对照组,差异有统计学意义(P<0.05).结论 住院医师规范化培训儿科临床技能教学中采用
目的 分析在烧伤科临床见习教学中应用案例式立体教学法的效果.方法 选取2018级临床医学五年制本科见习生200名作为该次的研究对象,按照教学方法不同分成研究组与参照组,每组100名.研究组的见习生采用案例式立体教学法(CTTM),参照组的见习生采用基于案例学习的教学方法(CBL).对两组见习生的专科知识进行测试,对比两组见习生的测试成绩.测试结束后让见习生评价该次的教学质量.结果 两组见习生的基础知识题测试成绩对比,差异无统计学意义(P>0.05).研究组见习生的病例分析题、临床应用题测试成绩以及总分优于
目的 通过健康教育工作的创新模式,为各级妇幼保健院和助产机构提供专业师资培训和规范化管理,以推动和促进昆明市孕妇学校规范化管理和示范孕妇学校创建,为降低孕产妇及婴儿病死率奠定基础.方法 以昆明市为主,云南省部分地州市助产机构中进行孕妇学校规范化建设试点单位招募,通过规范管理试点单位孕妇学校开展,分析影响孕妇健康教育效果的因素,制定对策,制定标准化培训课件,培训师资队伍,提高全市孕产妇健康教育水平,建立孕妇学校长效管理机制.并以该模式向云南其他州市助产机构推广.结果 孕期教育是针对生育阶段专业的健康教育,是