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Fabrication and Characterization of lifepo4 Nanotubes by a Sol-gel-AAO Template Process

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Chinese Journal of Chemical Physics 2006年第6期19卷 530-534页

作者：刘晓红王金清张俊彦杨生荣中国科学院兰州化学物理研究所固体润滑国家重点实验室

采用溶胶凝胶法在氧化铝模板中成功的制备了lifepo4一维纳米管阵列．扫描电子显微镜和透射电子显微镜表征结果表明所制备的lifepo4纳米管具有单分散性,互相平行,高度有序。综合选区电子衍射、X射线衍射以及X光线能谱表征结果,所制备的Li... 详细信息

采用溶胶凝胶法在氧化铝模板中成功的制备了lifepo4一维纳米管阵列．扫描电子显微镜和透射电子显微镜表征结果表明所制备的lifepo4纳米管具有单分散性,互相平行,高度有序。综合选区电子衍射、X射线衍射以及X光线能谱表征结果,所制备的lifepo4纳米管为单一的橄榄石型结构．这种在室温和温和条件下合成的一维lifepo4纳米管,可以做为新型的锂离子电池正极材料．

关键词：纳米管 lifepo4 阳极氧化铝

Electrochemical Performance and Capacity Fading Mechanism of lifepo4 at Different pH Aqueous Electrolyte Solutions

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Chinese Journal of Chemical Physics 2015年第3期28卷 315-322,I0002页

作者： Yuan Yin Yue-hua Wen Yong-lai Lu Jie Cheng Gao-ping Cao Yu-sheng Yang College of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 China Research Institute of Chemical Defence Beijing 100191 China

在一个包含 Li+ 水的电解质答案的 lifepo4 的电气化学的稳定性极其依赖于水的答案的 pH 价值。pH 价值什么时候被增加到 11，在骑车之上在 lifepo4 的能力显示出可观的腐烂。为褪色的能力负责的机制广泛地借助于周期的 voltammogram，... 详细信息

在一个包含 Li+ 水的电解质答案的 lifepo4 的电气化学的稳定性极其依赖于水的答案的 pH 价值。pH 价值什么时候被增加到 11，在骑车之上在 lifepo4 的能力显示出可观的腐烂。为褪色的能力负责的机制广泛地借助于周期的 voltammogram，交流阻抗，控告 / 解除，前 situ X 光检查衍射，和化学分析被调查。lifepo4 是相对在有 pH=7 的 LiNO3 水的答案电气化学地稳定。但是在水的电解质的 lifepo4 的电气化学的表演在器官的电解质低于那。它被归因于李和 Fe 的损失， P 溶解在在水的媒介的延长费用分泌物期间。A 猛抛在 lifepo4 电极的表面上被形成。它导致水晶的结构，大电极极化，并且能力褪色的变化。

关键词： lifepo4 电解质水溶液电化学性能衰减机理容量衰减 pH值原位X射线衍射交流阻抗方法

ZIF-8/lifepo4 derived Fe-N-P Co-doped carbon nanotube encapsulated Fe2P nanoparticles for efficient oxygen reduction and Zn-air batteries

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Nano Research 2020年第3期13卷 818-823页

作者： Huihui Jin Huang Zhou Pengxia Ji Chengtian Zhang Jiahuan Luo Weihao Zeng Chenxi Hu Daping He Shichun Mu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hubei Engineering Research Center of RF-Microwave Technology and Application Wuhan University of TechnologyWuhan 430070China Department of Chemical and Environmental Engineering Anyang Institute of TechnologyAnyang 455000China

Iron-based oxygen reduction reaction(ORR)catalysts have been the focus of research,and iron sources play an important role for the preparation of efficient ORR catalysts.Here,we successfully use lifepo4 as ideal sources of Fe and P to construct the heteroatom doped Fe-based carbon materials.The obtained Fe-N-P co-doped coral-like carbon nanotube arrays encapsulated Fe2P catalyst(C-ZIF/LFP)shows very high half-wave potential of 0.88 V in alkaline electrolytes toward ORR,superior to Pt/C(0.85 V),and also presents a high half-wave potential of 0.74 V in acidic electrolytes,comparable to Pt/C(0.8 V).When further applied into a home-made Zn-air battery as cathode,a peak power density of 140 mW·cm^-2 is reached,exceeds commercial Pt/C(110 mW·cm^-2).Besides,it also presents exceptional durability and methanol resistance compared with Pt/C.Noticeably,the preparation method of such a high-performance catalyst is simple and easy to optimize,suitable for the large-scale production.What’s more,it opens up a more sustainable development scenario to reduce the hazardous wastes such as lifepo4 by directly using them for preparing high-performance ORR catalysts.

关键词： lifepo4 waste utilization ZIF-8 heteroatoms-doped oxygen reduction reaction

Preparation and Electrochemical Performance of V2O3-C Dual-Layer Coated lifepo4 by Carbothermic Reduction of V2O5

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Chinese Journal of Chemical Physics 2015年第3期28卷 331-337,I0002页

作者： You-liang Wei Hong-fa Xiang School of Materials Science and Engineering Hefei University of Technology Hefei 230009 China

有优秀的率能力和骑车的稳定性的 V2O3-C 双层的涂的 lifepo4 阴极材料被 V2O5 的 carbothermic 减小准备。X 光检查粉末衍射，元素的分析器，高分辨率传播电子显微镜学和拉曼系列表明 V2O3 阶段在 lifepo4 粒子和没有 graphitization ... 详细信息

有优秀的率能力和骑车的稳定性的 V2O3-C 双层的涂的 lifepo4 阴极材料被 V2O5 的 carbothermic 减小准备。X 光检查粉末衍射，元素的分析器，高分辨率传播电子显微镜学和拉曼系列表明 V2O3 阶段在 lifepo4 粒子和没有 graphitization 度在 V2O5 的 carbothermic 减小以后变化，减少的碳内容的涂层层与碳共存了。电气化学的测量结果显示 V2O3 的小数量在 lifepo4/C 阴极材料的提高的温度改进了率能力和骑车的稳定性。与 1wt% 钒氧化物合成的 V2O3-C 双层的涂的 lifepo4 在 5 C 以及优秀骑车稳定性在 0.2 C 和 129 mAh/g 交付了 167 mAh/g 的一个起始的特定的能力。甚至在在在 830 J 的一个对称的房间和 SOE 的 55 s

关键词： lifepo4 电化学性能碳热还原双层包覆 V2O5 还原制备循环稳定性 X射线粉末衍射

Electrochemical Performance of LiMn2O4/lifepo4 Blend Cathodes for Lithium Ion Batteries

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Chemical Research in Chinese Universities 2015年第2期31卷 270-275页

作者： QIU Chengguang LIU Lina DU Fei YANG Xu WANG Chunzhong CHEN Gang WEI Yingjin Key Laboratory of Physics and Technology for Advanced Batteries(Ministry of Education) College of Physics State Key Laboratory of Superhard Materials Jilin University Changchun 130012 P. R. China School of Materials Science and Engineering Changehun University of Science and Technology Changehun 130022 P. R. China

A series of LiMn2O4/lifepo4 blend cathodes was prepared by hand milling and ball milling in order to compensate the disadvantage of spinel LiMnaO4 and olivine lifepo4. The morphologies of the blends were studied by scanning electron microscopy, and their electrochemical properties were studied by charge-discharge cycling, cyclic voltarnmetry and electrochemical impedance spectroscopy. It is easy to obtain uniform LiMn2Oa/lifepo4 blends by the hand milling technique, while significant particle agglomeration is caused by the ball milling technique. When the LiMn2O4：lifepo4 mass ratio is 1：1, the nano-sized lifepo4 powders not only uniformly cover the micron-sized LiMn2O4 particles but also effectively fill in the cavities of the LiMn2O4 space. Such morphology offers a good electrical contact and a high tap density, which leads to a high discharge capacity and good cycle stability.

关键词： Lithium ion battery LiMn2O4 lifepo4 Blend cathode

Ambient synthesis, characterization, and electrochemical activity of lifepo4 nanomaterials derived from iron phosphate intermediates

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Nano Research 2015年第8期8卷 2573-2594页

作者： Jonathan M. Patete Megan E. Scofield Vyacheslav Volkov Christopher Koenigsmann Yiman Zhang Amy C. Marschilok Xiaoya Wang Jianming Bai Jinkyu Han Lei Wang Feng Wang Yimei Zhu Jason A. Graetz Stanislaus S. Wong Department of Chemistry State University of New York at Stony Brook Stony Brook NY 77794-3400 USA Condensed Matter Physics and Materials Sciences Department Building 480 Brookhaven National Laboratory Upton NY 11973 USA Department of Materials Science and Engineering State University of New York at Stony Brook Stony Brook NY 11794-2275 USA Sustainable Energy Technologies Department Building 815 Brookhaven National Laboratory Upton NY 11973 USA National Synchrotron Light Source II Building 741 Brookhaven National Laboratory Upton NY 11973 USA

lifepo 4 材料由于他们拥有包括热稳定性，耐久性，低费用，和长寿跨度的许多好处作为阴极材料变得日益普及。不过，这材料恳求拓宽将军实际电气化学的应用程序，开发这阴极材料的一个相对温和的、相当简单的合成方法将是有用的。此处... 详细信息

lifepo 4 材料由于他们拥有包括热稳定性，耐久性，低费用，和长寿跨度的许多好处作为阴极材料变得日益普及。不过，这材料恳求拓宽将军实际电气化学的应用程序，开发这阴极材料的一个相对温和的、相当简单的合成方法将是有用的。此处，我们描述一可推广， sustainably 综合的 2 步方法论由合并的 lifepo 4 一基于模板，周围，无表面活化剂，无核， U 试管协议以便产生尺寸和词法上定制的、水晶的、阶段纯的 nanowires。这些电线的纯净，作文， crystallinity ，和内在的质量系统地用传播电子显微镜学( TEM )被估计，高分辨率的 TEM ( HRTEM )，扫描电子显微镜学( SEM )，X光检查衍射( XRD )，选择区域电子衍射( SAED )，精力X光( EDAX )的散分析，和高分辨率的同步加速器 XRD 。从这些技术，我们能决定有在我们的电线中在场的任何明显的缺点的缺席，支持我们的合成途径的生存能力。电气化学的分析也被采用估计他们的电气化学的活动。尽管我们的 nanowires 不包含任何显著杂质，我们在在我们的 lifepo 4 nanowires 和他们的像体积的对应物之间的化学结合把他们的不到最佳的电气化学的严酷归因于差别。明确地，我们试验性地第一次证明 Fe-O3 化学契约在决定材料的全面传导性起一个重要作用，进一步的断言由最近的第一原则的计算支持了。尽管如此，我们的周围的、基于答案的合成技术能够产生能被定制以便制作可再现的、可靠形态学的不同大小的材料的高度水晶、阶段纯的 energy-storage-relevant nanowires。

关键词： lifepo4 电化学活性纳米材料合成方法磷酸铁锂活性中间体环境透射电子显微镜

Physical and Electrochemical Properties of Doped lifepo4 as Cathode Material for Lithium-Ion Batteries

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Journal of Rare Earths 2004年第Z2期22卷 123-125页

作者： Yao Yongxun Duan Zhenzhong Li Yuenan Gu Hongwei Hua Zhiqiang Luan Wenzhou Wang Yuan Research Center of Superconducting Materials General Research Institute for Non-Ferrous MetalsBeijing 100088China Research Center of Superconducting MaterialsGeneral Research Institute for Non-Ferrous MetalsBeijing 100088China Research Center of Superconducting MaterialsGeneral Research Institute for Non-Ferrous MetalsBeijing 100088China Research Center of Superconducting MaterialsGeneral Research Institute for Non-Ferrous MetalsBeijing 100088China Research Center of Superconducting MaterialsGeneral Research Institute for Non-Ferrous MetalsBeijing 100088China Research Center of Superconducting MaterialsGeneral Research Institute for Non-Ferrous MetalsBeijing 100088China Research Center of Superconducting MaterialsGeneral Research Institute for Non-Ferrous MetalsBeijing 100088China

lifepo4 cathode material was synthesized by a solid-state reaction using doping several elements (Nb5 + ,Zr4 + ). The starting materials were mixed with a high-efficient sander and treated thermally under flowing N2. The samples were characterized by X-ray diffraction (XRD), field-emission gun electron microscopy (FEG), and their electrochemical performance was investigated in the term of cycling behavior. Room temperature discharge capacity about 140.6 mA·h·g-1 was obtained at C/5 rate.

关键词： Lithium-ion batteries lifepo4 cathode material discharge capacity

Size and shape control of lifepo4 nanocrystals for better lithium ion battery cathode materials

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Nano Research 2013年第7期6卷 469-477页

作者： Caiyun Nan Jun Lu Lihong Li Lingling Li Qing Peng Yadong Li Department of Chemistry State Key Laboratory of Low-Dimensional Quantum Physics Tsinghua University 8eijing 100084 China

锂铁磷酸盐(lifepo4 ) 是为锂离子电池，而是低电子电导率和单个散开隧道的潜在的高效率阴极材料因为锂离子在这材料的合成期间要求好粒子尺寸和形状控制。在这份报纸，有不同尺寸和形状的六 lifepo4 nanocrystals 成功地在乙烯乙二醇... 详细信息

锂铁磷酸盐(lifepo4 ) 是为锂离子电池，而是低电子电导率和单个散开隧道的潜在的高效率阴极材料因为锂离子在这材料的合成期间要求好粒子尺寸和形状控制。在这份报纸，有不同尺寸和形状的六 lifepo4 nanocrystals 成功地在乙烯乙二醇被综合了。形成 lifepo4 nanocrystals 与的增加顺序 Fe-PO4-Li 帮助主要 { 010 } 暴露的脸，并且增加 LiOH 的数量在粒子尺寸导致减少。六个不同 lifepo4 粒子的电气化学的表演证明最有希望的 lifepo4 nanocrystals 任何一个有占优势 { 010 } 脸暴露或高特定的区域，用小铁(II ) 氧化。

关键词：锂离子电池磷酸铁锂纳米晶体形状控制正极材料 lifepo4 颗粒大小合成过程

An Improved Method to Prepare FePO4 by Introduction of Na3PO4 and Its Usage for Fabricating lifepo4

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Journal of Wuhan University of Technology(Materials Science) 2019年第5期34卷 1097-1102页

作者：司秀荣 LI Min FU Xu Civil Engineering Department North China Institute of Aerospace EngineeringLangfang 065000China Hebei ANZ New Energy Tech.Co. Ltd.Langfang 065000China

A lifepo4/C composite was synthesized by a simple solid-state reaction method using glucose as reductive agent and carbon source and FePO4 as precursor, which was prepared by introduction of Na3PO4 as phosphorus source and pH regulator in order to pursue lower cost and environmental protection. The structure and morphology of FePO4 and lifepo4/C were investigated by X-ray diffraction(XRD) and scanning electron microscopy(SEM). Furthermore, electrochemical performance of lifepo4/C was investigated by galvanostatic charge–discharge tests and cyclicvoltammogram(CV). The results indicate that FePO4 obtained has a small particle size and uniform particle distribution, which is demonstrated to be applicable as the iron source to synthesize lifepo4/C. Prepared lifepo4/C shows an excellent rate capability and cycle performance. At rates of 0.1 C, 0.2 C, 1 C and 2 C, the initial discharge capacities of 161, 158, 145 and 120 mAh/g were achieved, respectively and the discharge capacity is 154, 153, 140 and 116 mAh/g after 400 cycles. The employed method of preparing FePO4 by introduction of Na3PO4 has advantages such as low cost, safe raw material, environmental benign and recyclable products, which is suitable for industrial production.

关键词： lithium ion batteries cathode lifepo4 FePO4