Title:
POSITIVE ELECTRODE ACTIVE MATERIAL FOR POTASSIUM SECONDARY BATTERY AND POTASSIUM SECONDARY BATTERY CONTAINING SAME
Document Type and Number:
WIPO Patent Application WO/2018/164477
Kind Code:
A1
Abstract:
The present invention relates to a positive electrode active material for a potassium secondary battery, the positive electrode active material according to the present invention is a crystalline material comprising: K; a transition metal; P; and O, and comprises, as a main image, an image indicating a diffraction peak having a relative intensity of 5% or more in a range of Bragg angles (2θ) of a X-ray diffraction pattern of 14.7° to 15.7°, 22.1° to 23.1°, 25.5° to 26.5°, and 29.7° to 30.8°, when the relative intensity of the diffraction peak having the highest intensity is taken as 100% in the powder X-ray diffraction pattern of the material.
Inventors:
SOHN KEE-SUN (KR)
PARK UN-BEA (KR)
PARK UN-BEA (KR)
Application Number:
PCT/KR2018/002700
Publication Date:
September 13, 2018
Filing Date:
March 07, 2018
Export Citation:
Assignee:
INDUSTRY ACADEMIA COOPERATION GROUP OF SEJONG UNIV (KR)
International Classes:
H01M10/054; H01M4/58
Foreign References:
| JP2016504257A | 2016-02-12 | |||
| KR20170009371A | 2017-01-25 | |||
| KR20110120868A | 2011-11-04 |
Other References:
HAN, J. ET AL.: "Investigation of K3V2(PO4)3/C Nanocomposites as High-potential Cathode Materials for Potassium-ion Batteries", CHEM . COMM., vol. 53, 13 January 2017 (2017-01-13), pages 1805 - 1808, XP055557841
BENHAMADA, L. ET AL.: "Structure of KVP207", ACTA CRYST ., 1991, pages 424 - 425, XP055557858
PARK, W. B. ET AL.: "KVP2O7 as a Robust High-Energy Cathode for Potassium-Ion Batteries: Pinpointed by a Full Screening of the Inorganic Registry under Specific Search Conditions", ADVANCED ENERGY MATERIALS, 19 January 2018 (2018-01-19), pages 1 - 12, XP055557864, [retrieved on 20180119]
BENHAMADA, L. ET AL.: "Structure of KVP207", ACTA CRYST ., 1991, pages 424 - 425, XP055557858
PARK, W. B. ET AL.: "KVP2O7 as a Robust High-Energy Cathode for Potassium-Ion Batteries: Pinpointed by a Full Screening of the Inorganic Registry under Specific Search Conditions", ADVANCED ENERGY MATERIALS, 19 January 2018 (2018-01-19), pages 1 - 12, XP055557864, [retrieved on 20180119]
Attorney, Agent or Firm:
IAM PATENT FIRM (KR)
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