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Patent Searching and Data


Title:
SAGGER FOR FIRING SECONDARY BATTERY ACTIVE MATERIAL AND METHOD FOR MANUFACTURING SECONDARY BATTERY ACTIVE MATERIAL USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/066545
Kind Code:
A1
Abstract:
The present invention relates to a sagger for firing an object to be fired including an active material for a secondary battery. The sagger comprises a notch portion that is recessed from an upper portion of a side wall thereof to open a portion of the side wall, wherein the ratio of the area of the notch portion to the area of the side wall is 30% to 70%, and an edge where a side wall of the sagger contacts a lower surface of the sagger is configured by a round portion. According to the present invention, carbon dioxide that is a reaction by-product produced during a positive electrode active material firing process can be smoothly discharged from the sagger, and such a smooth discharge of carbon dioxide can lower a residual lithium concentration of a positive electrode active material and thus can improve dispersibility of a positive electrode active material slurry and also improve capacity of a battery.

Inventors:
PARK, Young-Min (5-703, 155 Jigok-ro, Nam-gu,Pohang-si, Gyeongsangbuk-do, 37673, KR)
KIM, Woo-Taek (114-101, 100 Daei-ro, Nam-gu,Pohang-si, Gyeongsangbuk-do, 37680, KR)
KIM, Hyeon-Woo (301-1703, 88 Hyoseong-ro, Nam-gu,Pohang-si, Gyeongsangbuk-do, 37835, KR)
HWANG, Soon-Cheol (7-602, 155 Jigok-ro, Nam-gu,Pohang-si, Gyeongsangbuk-do, 37673, KR)
YANG, Choong-Mo (Heimvilla, 2-20125, Samhaksa-ro 9-gil,,Songpa-gu, Seoul, 05588, KR)
PARK, Yoon-Cheol (102-1101, 65 Suyeong-ro 408beon-gil,Suyeong-gu, Busan, 48309, KR)
JUNG, Keeyoung (108-206, 260 Jigok-ro, Nam-gu,Pohang-si, Gyeongsangbuk-do, 37667, KR)
Application Number:
KR2018/011518
Publication Date:
April 04, 2019
Filing Date:
September 28, 2018
Export Citation:
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Assignee:
POSCO (6261, Donghaean-ro Nam-gu,Pohang-si, Gyeongsangbuk-do, 37859, KR)
RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY (67 Cheongam-ro, Nam-guPohang-si, Gyeongsangbuk-do, 37673, KR)
International Classes:
F27D5/00; C04B35/185; C04B35/66
Foreign References:
KR200468934Y12013-09-10
JP2009227501A2009-10-08
JP2015218098A2015-12-07
KR20130051290A2013-05-20
JP2005257171A2005-09-22
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (7th Floor, Daelim Acrotel13, Eonju-ro 30-gil,Gangnam-gu, Seoul, 06292, KR)
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