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WO2019093660A3 - Method for manufacture of maghemite - Google Patents

Method for manufacture of maghemite Download PDF

Info

Publication number
WO2019093660A3
WO2019093660A3 PCT/KR2018/011948 KR2018011948W WO2019093660A3 WO 2019093660 A3 WO2019093660 A3 WO 2019093660A3 KR 2018011948 W KR2018011948 W KR 2018011948W WO 2019093660 A3 WO2019093660 A3 WO 2019093660A3
Authority
WO
WIPO (PCT)
Prior art keywords
maghemite
manufacture
lepidocrocite
feooh
nabh4
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.)
Ceased
Application number
PCT/KR2018/011948
Other languages
French (fr)
Korean (ko)
Other versions
WO2019093660A2 (en
Inventor
한승훈
문정미
손권남
양두경
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.)
LG Chem Ltd
Original Assignee
LG Chem Ltd
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 LG Chem Ltd filed Critical LG Chem Ltd
Publication of WO2019093660A2 publication Critical patent/WO2019093660A2/en
Publication of WO2019093660A3 publication Critical patent/WO2019093660A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/02—Oxides; Hydroxides
    • C01G49/06—Ferric oxide [Fe2O3]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • 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
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The present invention relates to a method for manufacture of maghemite. More specifically, NaBH4 is reacted with Fe(NO3)3·9H2O under the control of a reaction time and reaction temperature to afford crystalline lepidocrocite (γ-FeOOH) which is then thermally treated in a non-active gas condition to produce high purity maghemite (γ-Fe2O3). The application of the maghemite to a cathode of a lithium-sulfur secondary battery can improve the discharge capacity.
PCT/KR2018/011948 2017-11-07 2018-10-11 Method for manufacture of maghemite Ceased WO2019093660A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2017-0147143 2017-11-07
KR1020170147143A KR102229451B1 (en) 2017-11-07 2017-11-07 Method for preparing maghemite

Publications (2)

Publication Number Publication Date
WO2019093660A2 WO2019093660A2 (en) 2019-05-16
WO2019093660A3 true WO2019093660A3 (en) 2019-06-27

Family

ID=66438569

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2018/011948 Ceased WO2019093660A2 (en) 2017-11-07 2018-10-11 Method for manufacture of maghemite

Country Status (2)

Country Link
KR (1) KR102229451B1 (en)
WO (1) WO2019093660A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102229454B1 (en) 2017-06-20 2021-03-18 주식회사 엘지화학 METHOD FOR PREPARING FeOOH, AND CATHODE FOR LITHIUM-SULFUR BATTERY COMPRISING FeOOH
KR102443532B1 (en) * 2020-09-18 2022-09-14 인하대학교 산학협력단 Method for producing maghemite and maghemite produced thereby
KR20230072616A (en) * 2021-11-18 2023-05-25 주식회사 엘지에너지솔루션 Positive electrode for lithium secondary battery and lithium secondary comprising the same
CN114700077A (en) * 2022-04-24 2022-07-05 昆明理工大学 Preparation method and application of ferric oxide doped double-phase titanium dioxide catalyst

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4176172A (en) * 1975-12-22 1979-11-27 Pfizer Inc. Particle gamma ferric oxide
KR20090120058A (en) * 2008-05-19 2009-11-24 포항공과대학교 산학협력단 Method for preparing nano iron using carbonyl solvent and nano iron manufactured therefrom
US20100303730A1 (en) * 2009-05-29 2010-12-02 Torsten Hegmann Methods of making iron-containing nanoparticles

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100482279B1 (en) 2002-11-06 2005-04-14 한국과학기술연구원 Preparation method of boron nitride thick film with binder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4176172A (en) * 1975-12-22 1979-11-27 Pfizer Inc. Particle gamma ferric oxide
KR20090120058A (en) * 2008-05-19 2009-11-24 포항공과대학교 산학협력단 Method for preparing nano iron using carbonyl solvent and nano iron manufactured therefrom
US20100303730A1 (en) * 2009-05-29 2010-12-02 Torsten Hegmann Methods of making iron-containing nanoparticles

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
AGARWAL, ASHUTOS ET AL.: "Synthesis, Characterization and Application of Nano Lepidocrocite and Magnetite in the Degradation of Carbon Tetrachloride", SOUTH AFRICAN JOURNAL OF CHEMISTRY, vol. 64, 2011, pages 218 - 224, XP055574521 *
DLNESEN, A. R. ET AL.: "The Thermal Conversion of Lepidocrocite (y-FeOOH) Revisited", JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, vol. 64, 2001, pages 1303 - 1310, XP019253803 *

Also Published As

Publication number Publication date
KR20190051448A (en) 2019-05-15
KR102229451B1 (en) 2021-03-17
WO2019093660A2 (en) 2019-05-16

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