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Carbon Resources Conversion 2022年第2期5卷 131-138页

作者： Ruixin Dai Gang Chen Kai Wei Zhuo Chen Xiaohong Lv Guoqiang Liu Ying Li Shujiang Geng School of Metallurgy Northeastern UniversityShenyang 110819China Liaoning Key Laboratory for Metallurgical Sensor and Technology Northeastern UniversityShenyang 110819China

Previous studies have found that the ceramic fuel cell using Ni_(0.8)Co_(0.15)Al_(0.05)LiO_(2)(NCAL)symmetrical electrode has obtained very good power generation performance in the temperature range of 450 to 550℃.Previous studies have pointed out that after being reduced by H2,NCAL anode will produce lioh/Li2CO3 mixture and diffuse into the electrolyte,which results in the high ionic conductivity of the cell.In this study,the chemical reactivity of different oxide electrolytes such as CeO_(2),TiO_(2),ZrO_(2)and YSZ with lioh and/or Li2CO3 and their effects on the electrochemical performance of the cell were studied.It is found that at 550◦C,only the open circuit voltage(OCV)of the cell using CeO_(2)as electrolyte can remain stable,and the maximum power density(MPD)of the CeO_(2)electrolyte cell reaches 599.6 mW⋅cm^(−2).The OCV of the cells with TiO_(2),ZrO_(2)and YSZ as electrolyte increased to the highest value within a few minutes,and the MPD of the cells was only more than 12 mW⋅cm^(−2).XRD,FT-IR,SEM-EDS and ICP-OES results indicate that the lioh/Li2CO3 mixture diffuses into TiO_(2),ZrO_(2)and YSZ electrolytes and reacts with three oxides to produce Li2TiO3 and Li2ZrO3,respectively,which results in the low performance of the cell.

关键词： Ceramic fuel cell with lithium compounds electrode Ni_(0.8)Co_(0.15)Al_(0.05)LiO_(2) lioh Chemical reaction Electrochemical performance

Carbonation Reaction of Lithium Hydroxide during Low Temperature Thermal Energy Storage Process

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Journal of Renewable Materials 2021年第9期9卷 1621-1630页

作者： Jun Li Tao Zeng Noriyuki Kobayashi Rongjun Wu Haotai Xu Lisheng Deng Zhaohong He Hongyu Huang Guangzhou Institute of Energy Conversion Chinese Academy of SciencesGuangzhou510640China Guangdong Key Laboratory of New and Renewable Energy Research and Development Guangzhou510640China Southern Marine Science and Engineering Guangdong Laboratory Guangzhou511458China Department of Chemical Engineering Nagoya UniversityNagoya464-8603Japan

In order to apply lithium hydroxide(lioh)as a low temperature chemical heat storage material,the carbonation reaction of lioh and the prevention method are focused in this research.The carbonation of raw lioh at storage and hydration condition is experimentally investigated.The results show that the carbonation reaction of lioh with carbon dioxide(CO_(2))is confirmed during the hydration reaction.The carbonation of lioh can be easily carried out with CO_(2) at room temperature and humidity.lioh can be carbonated at a humidity range of 10%to 20%,a normal humidity region that air can easily be reached.Furthermore,the carbonation reaction rate has not nearly affected by the increase of reaction temperature.An improved storage method by storing lioh at a low humidity less than 1.0%can be effectively prevented the carbonation of lioh.The hydration reaction ratio of lioh at the improved storage method shows a better result compared to the ordinary storage method.Therefore,the humidity should be carefully controlled during the storage of lioh before hydration and dehydration reaction when apply lioh as a low heat chemical storage material.

关键词： lioh heat storage low temperature carbonation reaction hydration reaction

Super Absorption Behavior of Chitosan by Freeze-Blasting in Different Alkaline Solvents

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Journal of Renewable Materials 2018年第5期6卷 457-463页

作者： Min Fan Qiaoling Hu College of Food Science and Technology Shanghai Ocean UniversityShanghai201306China National R&D Branch Center for Freshwater Aquatic Products Processing Technology(Shanghai) Shanghai 201306China Shanghai Engineering Research Center of Aquatic-Product Processing&Preservation Shanghai 201306China Department of Polymer Science Zhejiang UniversityHangzhou310027China

The absorption behavior of chitosan in alkaline solution by freeze-blasting was studied.The influence of alkaline type,concentration,and small molecules was investigated,as well as the different roles of lioh and NaOH in the absorption.Chitosan reached its maximum absorption rate when lioh concentration was 4.8 wt%and NaOH 4.0 wt%,respectively.Chitosan showed better absorption capacity in lioh solution.Urea could improve the absorption when its concentration was more than or equal to 4.0 wt%,and the improvement was greater in NaOH solution.Thiourea showed no obvious effect in lioh solution,but showed an effect when NaOH concentration was 4.0 wt%and 6.0 wt%.During the absorption,NaOH only reacted with-OH of chitosan,while lioh not only reacted with-OH of chitosan,but also reacted with the acetyl group of chitosan.lioh was more powerful in destroying hydrogen bonding of chitosan.lioh/urea solution may be a uniquely powerful solvent for chitosan.

关键词： Chitosan NaOH lioh urea thiourea

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锂离子电池三元正极材料残碱测试影响因素

电池 2022年第4期52卷 475-478页

作者：王裕生柳春月吴珊珊孙伟丽宁波容百新能源科技股份有限公司浙江宁波315400

残碱是三元正极材料生产过程中的一项重要控制指标。通过电位滴定法,研究三元正极材料中残碱测试的影响因素,包括水质、温度、CO_(2)、过滤方式和静置时间等,其中,空气中的CO_(2)对残碱测试的影响最大。三元正极材料及残碱溶液敞口放置0... 详细信息

残碱是三元正极材料生产过程中的一项重要控制指标。通过电位滴定法,研究三元正极材料中残碱测试的影响因素,包括水质、温度、CO_(2)、过滤方式和静置时间等,其中,空气中的CO_(2)对残碱测试的影响最大。三元正极材料及残碱溶液敞口放置0.5 h后,Li_(2)CO_(3)含量升高约22%,lioh含量降低约15%。这说明材料暴露在空气中,极易吸收CO_(2),导致lioh转化为Li_(2)CO_(3),因此,测试残碱的材料应密封包装,测试过程中应减少材料、溶液与空气的接触。材料体相内的Li会不断溶出,搅拌结束后,应尽快测试或过滤到烧杯中,用保鲜膜密封,避免长时间静置导致残碱测试结果偏高。由于上述因素影响面较广,三元正极材料中残碱的测试过程需要严格控制。

关键词：电位滴定法三元正极材料残碱 CO_(2) Li_(2)CO_(3) lioh

LiH,LiO和lioh的分析势能函数与分子反应动力学

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物理学报 2003年第10期52卷 2438-2442页

作者：罗德礼蒙大桥朱正和中国工程物理研究院绵阳919信箱71分箱621900 四川大学原子分子物理研究所成都610065

基于相对论有效原子实势 (RECP)和密度泛函 (B3LYP SDD)方法 ,优化得到了LiH ,LiO和lioh的分子结构 ;研究得到了LiH和LiO的Murrell Sorbie分析势能函数以及lioh的多体项展式分析势能函数 ,由势能函数导出了LiH ,LiO和lioh的离解能 ,分别... 详细信息

基于相对论有效原子实势 (RECP)和密度泛函 (B3LYP SDD)方法 ,优化得到了LiH ,LiO和lioh的分子结构 ;研究得到了LiH和LiO的Murrell Sorbie分析势能函数以及lioh的多体项展式分析势能函数 ,由势能函数导出了LiH ,LiO和lioh的离解能 ,分别为 2 72 2eV ,3 592eV和 9 0 85eV ,与实验值基本一致 .在分析势能函数基础上 ,用准经典分子散射理论方法 ,研究了LiH与O的分子反应动力学 .结果表明 ,碰撞反应是一个无阈能反应 ,即较低的初始平动能更有利于反应产物的形成。

关键词： LiH LiO lioh 分析势能函数分子反应动力学分子结构离解能准经典分子散射理论氢氧化锂氧化锂氢化锂

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lioh对碱-硅酸反应产物膨胀行为的影响

建筑材料学报 2005年第2期8卷 113-120页

作者：梅来宝唐明述邓敏南京工业大学理学院江苏南京210009 南京工业大学材料科学与工程学院江苏南京210009

研究了硅酸与KOH,NaOH以及lioh反应后所形成产物的吸水能力,结果表明:KOH与硅酸反应后的产物的吸水能力最强,其次是 NaOH,而 lioh与硅酸反应的产物的吸水能力最弱.通过SEM/EDS对比研究了硅质集料在 lioh,KOH,lioh+KOH介质中的膨胀行为,... 详细信息

研究了硅酸与KOH,NaOH以及lioh反应后所形成产物的吸水能力,结果表明:KOH与硅酸反应后的产物的吸水能力最强,其次是 NaOH,而 lioh与硅酸反应的产物的吸水能力最弱.通过SEM/EDS对比研究了硅质集料在 lioh,KOH,lioh+KOH介质中的膨胀行为,结果表明: lioh-硅酸反应生成的结构致密的非膨胀性产物硅酸锂L S H包裹在未反应的集料周围,阻止了碱-硅酸反应的继续进行,而 lioh-硅酸反应过程本身不会引起膨胀;在lioh存在时,硅酸与KOH反应后形成的 K S H中的 K+被Li+取代生成L S H,而L S H阻碍了碱-硅酸反应的继续进行,故 lioh能够抑制碱-硅酸反应发生膨胀.

关键词： lioh 膨胀行为反应产物 SEM/EDS 对碱吸水能力 NaOH KOH 硅质集料对比研究反应生成反应过程 Li^+ 硅酸锂膨胀性 K^+ 包裹致密制碱

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岩盐型LiTiO_2的合成和表征

无机材料学报 2007年第1期22卷 84-88页

作者：裴先茹张顺利张经纬杨建军金振声河南大学特种功能材料重点实验室开封475001

在常压、110℃用浓lioh水溶液和粉末TiO2(锐钛矿)反应的方法,合成了岩盐型LiTiO2,并采用TEM、XRD、XPS、TG／DTG等手段对岩盐型LiTiO2进行了表征．结果表明,采用该方法制得的岩盐型LiTiO2为纳米颗粒状的非化学计量物质,在<500℃其晶型... 详细信息

在常压、110℃用浓lioh水溶液和粉末TiO2(锐钛矿)反应的方法,合成了岩盐型LiTiO2,并采用TEM、XRD、XPS、TG／DTG等手段对岩盐型LiTiO2进行了表征．结果表明,采用该方法制得的岩盐型LiTiO2为纳米颗粒状的非化学计量物质,在<500℃其晶型是稳定的,在室温下它有较强的吸水性．

关键词：岩盐型LiTiO2 XPS lioh Li^+离子电池

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一种真空硅热法炼锂新方法的探索性研究

真空科学与技术学报 2014年第6期34卷 656-660页

作者：狄跃忠潘喜娟彭建平王耀武冯乃祥东北大学材料与冶金学院沈阳110819

随着金属Li需求量的迅猛增加和真空技术的不断发展,真空金属热还原法是一种具有工业应用前景的炼锂方法。本文对常压下以氢氧化锂、氧化铝和氧化钙为原料合成Li5AlO4熟料以及以硅铁为还原剂真空热还原提取金属Li进行了探索性实验研究。... 详细信息

随着金属Li需求量的迅猛增加和真空技术的不断发展,真空金属热还原法是一种具有工业应用前景的炼锂方法。本文对常压下以氢氧化锂、氧化铝和氧化钙为原料合成Li5AlO4熟料以及以硅铁为还原剂真空热还原提取金属Li进行了探索性实验研究。研究了不同煅烧条件对Li5AlO4合成的影响以及不同还原条件对硅热还原制取金属Li过程的影响。结果表明:常压下可以煅烧获得富锂熟料,其物相为Li5AlO4和CaO以及少量的LiAlO2。采用该熟料在系统压强-5 Pa,还原温度1473 K,还原时间120 min,硅铁不过量的条件下,金属锂的还原率为98%,还原渣主要成分为2CaO·SiO2。该硅热法炼锂工艺可行,其料锂比为9.9∶1。

关键词：真空冶金 lioh 硅铁锂还原率

LiCoO_2梯度包覆LiNi_(0.96)Co_(0.04)O_2电极材料的电化学性能

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无机化学学报 2005年第5期21卷 725-728页

作者：顾大明史鹏飞宋振业张鼎哈尔滨工业大学应用化学系哈尔滨150001

LiCoO2 gradient coated LiNi0.96Co0.04O2 material and iso-structure LiNi0.8Co0.2O2 material (the same molar ratio 8/2 of Ni/Co in the two materials) as cathode for lithium-ion batteries were synthesized with a co-precipitation method. Microstructure of iso-structure LiNi0.8Co0.2O2 were about the same as that of LiNiO2, and the structure of the coated material was much more similar to that of LiCoO2 based on the X-ray diffraction patterns. The cycling voltammetry and galvanostatic cycle tests show that the properties of the coated material were improved significantly. The first specific charge and discharge capacity for the coated material was 249.20 mAh·g-1 and 207.90 mAh·g-1 respectively, and the specific discharge capacity for the 100th cycle was still 186.02 mAh·g-1 with an irreversible loss of only 21.1 mAh·g-1. This showed that the new material had a good lithium intercalation-deintrercalation performance. Meanwhile, the mechanism of the sintering reaction was proposed. During the sintering reaction of the precursor with lioh, the Li+-ion permeated into the body of precursors because the shape of the precursor particles was not changed basically based on scanning electronic microscopy. So, the layer microstructure of the precursor is important for the layer microstructure of lithium nickel cobalt oxides electrode material.

关键词： LiCoO2 LiNi0.8Co0.2O2 电化学性能电极材料 performa 包覆梯度 with LiNiO2 cobalt the and ratio was first shape more show lioh The met new

无膦钯催化Heck反应合成新型芳维A酸类化合物

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化学学报 2008年第9期66卷 1086-1090页

作者：刘西洋李治章吴运东张尊英梁盛宗贾晓雷向建南湖南大学化学化工学院长沙410082 湖南科技学院化学系永州425100

考察了以二环己基胺作配体的无膦钯催化Heck反应条件,建立起一种新型的无膦钯催化Heck反应体系.应用该体系可高收率(72%～84%)、高立体选择性(83%～95%)合成二取代和三取代二苯烯类化合物.以2,4,5-三甲氧基苯乙烯、α-细辛脑为原料,合成... 详细信息

考察了以二环己基胺作配体的无膦钯催化Heck反应条件,建立起一种新型的无膦钯催化Heck反应体系.应用该体系可高收率(72%～84%)、高立体选择性(83%～95%)合成二取代和三取代二苯烯类化合物.以2,4,5-三甲氧基苯乙烯、α-细辛脑为原料,合成了4个尚未见文献报道的新型二苯烯类芳维A酸甲酯(3a,3b,4a,4b),并且在温和的水解体系[lioh,V(THF)∶V(H2O)=5∶1]下顺利得到了它们的水解产物芳维A酸(5a,5b,6a,6b),产物通过1HNMR,13CNMR,IR和MS进行了结构确认.

关键词：芳维A酸苯乙烯衍生物二苯烯二环己基胺钯 Heck反应 lioh