CN104577105A - 一种LiCoO2正极材料的制备方法 - Google Patents

一种LiCoO2正极材料的制备方法 Download PDF

Info

Publication number
CN104577105A
CN104577105A CN201310469332.XA CN201310469332A CN104577105A CN 104577105 A CN104577105 A CN 104577105A CN 201310469332 A CN201310469332 A CN 201310469332A CN 104577105 A CN104577105 A CN 104577105A
Authority
CN
China
Prior art keywords
preparation
positive electrode
lithium
cobalt
phase synthesis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201310469332.XA
Other languages
English (en)
Inventor
不公告发明人
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201310469332.XA priority Critical patent/CN104577105A/zh
Publication of CN104577105A publication Critical patent/CN104577105A/zh
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
    • H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

本发明公开了一种LiCoO2正极材料的制备方法，以高温固相合成法与低温固相合成法相结合，取长补短，工艺简单，利于工业化生产，结构分析有大约6%的钴存在于锂层中，具有理想层状和尖晶石结构的中间结构。工作电压高、放电平稳、比能量高、循环性能好。

Description

一种LiCoO2正极材料的制备方法
技术领域
本发明属于新材料领域，尤其涉及一种LiCoO2正极材料在锂电池中的
制备方法。
背景技术
现今蓄电池种类很多，普通蓄电池的极板是由铅和铅的氧化物构成，电解液是硫酸的水溶液。它的主要优点是电压稳定、价格便宜；缺点是比能低（即每公斤蓄电池存储的电能）、使用寿命短和日常维护频繁，而锂电池工作电压高、放电平稳、比能量高、循环性能好等优点，适合大电流放电，而LiCoO2是锂离子电池中一种较好的正极材料，非常适合锂离子的嵌入和脱出。
发明内容
本发明的目的为提供一种LiCoO2正极材料的制备方法，实现工作电压高、放电平稳、比能量高、循环性能好。
本发明是通过以下方式实现的：
通过高温固相合成法，以锂、钴的碳酸盐、硝酸盐、醋酸盐、氧化物等作为锂源和钴源，混合压片后在空气中加热到600℃至900℃甚至更高的温度，保温一定时间。将焙烧和球磨技术结合进行长时间或多阶段加热，获得纯相且颗粒均匀的产物。由于这种工艺存在反应物难以合均匀，能耗巨大；产物粒径较大且粒径范围宽，颗粒形貌不规则，调节产品的形貌特征比较困难，导致材料的电化学性能不易控制，因此又采用多种低温合成技术。将钴锂的碳酸盐按照化学计量比充分混合，在已烷中研磨，升温速率控制在50℃h-1，在空气中加热到400℃，保温一周，形成单相产物。
本发明的有益效果为：本发明以高温固相合成法与低温固相合成法相结合，取长补短，工艺简单，利于工业化生产，结构分析有大约6%的钴存在于锂层中，具有理想层状和尖晶石结构的中间结构。
具体实施方式
实施例1
温固相合成法，以锂、钴的碳酸盐、硝酸盐、醋酸盐、氧化物等作为锂源和钴源，混合压片后在空气中加热到600℃至900℃甚至更高的温度，保温一定时间。将焙烧和球磨技术结合进行长时间或多阶段加热，获得纯相且颗粒均匀的产物。
实施例2
低温合成技术。将钴锂的碳酸盐按照化学计量比充分混合，在已烷中研磨，升温速率控制在50℃h-1，在空气中加热到400℃，保温一周，形成单相产物。

Claims (3)

1.一种LiCoO2正极材料的制备方法，其特征在于：先以温固相合成法，再辅以低温合成技术。
2.根据权利要求1所述的温固相合成法，其特征在于：制备步骤为以锂、钴的碳酸盐、硝酸盐、醋酸盐、氧化物等作为锂源和钴源，混合压片后在空气中加热到600℃至900℃甚至更高的温度，保温一定时间。
3.根据权利要求1所述的低温合成技术，其特征在于：制备步骤将钴锂的碳酸盐按照化学计量比充分混合，在已烷中研磨，升温速率控制在50℃h-1，在空气中加热到400℃，保温一周。
CN201310469332.XA 2013-10-10 2013-10-10 一种LiCoO2正极材料的制备方法 Pending CN104577105A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310469332.XA CN104577105A (zh) 2013-10-10 2013-10-10 一种LiCoO2正极材料的制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310469332.XA CN104577105A (zh) 2013-10-10 2013-10-10 一种LiCoO2正极材料的制备方法

Publications (1)

Publication Number Publication Date
CN104577105A true CN104577105A (zh) 2015-04-29

Family

ID=53092681

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310469332.XA Pending CN104577105A (zh) 2013-10-10 2013-10-10 一种LiCoO2正极材料的制备方法

Country Status (1)

Country Link
CN (1) CN104577105A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108550830A (zh) * 2018-05-11 2018-09-18 哈尔滨工业大学深圳研究生院 锂离子电池正极材料及其制作方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108550830A (zh) * 2018-05-11 2018-09-18 哈尔滨工业大学深圳研究生院 锂离子电池正极材料及其制作方法

Similar Documents

Publication Publication Date Title
CN104319386A (zh) 一种锂离子电池正极多元复合材料及制备方法
CN102583583B (zh) 一种锂离子电池锰钴锂氧化物正极材料及其制备方法
CN103490057B (zh) 一种锂离子电池用镍锰酸锂正极材料的制备方法
CN104362308A (zh) 一种锂离子电池正极多元复合材料及制备方法
CN103682292B (zh) 高振实密度的钛酸锂材料制备方法
CN106711435A (zh) 一种层状富锂锰基/石墨烯纳米带正极复合材料的制备方法
CN103700836A (zh) 单晶三元正极材料ZnO/LiNi0.5Co0.2Mn0.3O2的制备方法
CN102709545A (zh) 一种锂离子动力电池正极材料锰酸锂的制备方法
CN103441239A (zh) 一种纳米级三元正极材料的合成方法
CN102903925A (zh) 掺杂Mg的三元正极材料的制备方法
CN103367705A (zh) 一种双层包覆的复合锂离子正极材料及其制备方法
CN102774891A (zh) 一种提高尖晶石LiNi0.5Mn1.5O4电化学性能的方法
CN103606670A (zh) 一种动力锂离子电池锰酸锂正极材料及其制备方法
CN104466166A (zh) 一种锂二次电池镍锰尖晶石高电压正极材料的制备方法
CN102447103B (zh) 一种提高首次充放电效率的层状锰基正极材料的制备方法
CN104362291B (zh) 一种锂离子电池富锂正极材料及其制备方法和锂离子电池
CN102903907A (zh) 高循环性能石墨烯负载LiNi0.5Mn0.5O2正极材料的制备方法
CN102856540A (zh) 一种快速合成锂离子电池多元层状正极材料的方法
CN104577105A (zh) 一种LiCoO2正极材料的制备方法
CN105470500A (zh) 高电压钴酸锂正极材料及其制备方法
CN105655567B (zh) 磷酸钒锂/氧化钴锂复合材料及其制备方法
CN103682335A (zh) 锂离子电池正极材料的制备方法
CN108091855A (zh) 一种轻金属共掺杂锂离子电池锰酸锂正极材料的制备和改进方法
CN101293641B (zh) 氯离子掺杂磷酸铁锂粉体的制备方法
CN108258237A (zh) 一种两步溶液法制备磷酸铁锂正极材料的方法

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20150429