Patent
Positive electrode active material and lithium secondary battery including the same
Choi Moon Ho,Heo Gyeong Jae,Yu Hyun Jong,Choi Seung Hyun,Chun Yu Gyeong +4 more
- 23 Feb 2021
TL;DR: In this paper, a positive electrode active material (PESMA) was proposed for a lithium secondary battery, where the primary particles included in a secondary particle exhibit an aspect ratio gradient which gradually increases from the center of the secondary particle to the surface thereof.
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Abstract: The present invention relates to a positive electrode active material, in which primary particles included in a secondary particle exhibit an aspect ratio gradient which gradually increases from the center of the secondary particle to the surface thereof, and a lithium secondary battery which uses a positive electrode containing the positive electrode active material.
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References
Pushing the limit of layered transition metal oxide cathodes for high-energy density rechargeable Li ion batteries
Un Hyuck Kim,D.-W. Jun,Kang-Joon Park,Q. Zhang,Payam Kaghazchi,Payam Kaghazchi,Doron Aurbach,Dan Thomas Major,Gil Goobes,Mudit Dixit,Nicole Leifer,Chongmin Wang,Pengfei Yan,Docheon Ahn,Kwang Ho Kim,Chong Seung Yoon,Yang-Kook Sun +16 more
TL;DR: In this article, the authors used tungsten-stabilized Ni-rich cathode materials to increase the energy density of Li ion batteries without compromising the battery's durability.
366
Patent
Nonaqueous electrolyte secondary battery
Hiroyuki Kobori,Fujiwara Akira,Aki Kanazawa,Kagata Tsubasa,Ryohei Yoshida,Kosaka Yozo +5 more
- 21 Apr 2011
TL;DR: In this paper, an electrode plate for a nonaqueous electrolyte secondary battery is provided with a current collector and an electrode active material layer formed on at least part of the surface of the current collector.
295
Suppressing detrimental phase transitions via tungsten doping of LiNiO2 cathode for next-generation lithium-ion batteries
TL;DR: In this paper, a series of W-doped LiNiO2 cathodes were synthesized to systematically investigate the stabilization effect of W doping and showed that W doping prolonged the deleterious phase transition to the extent that the two-phase reaction (H2 → H3) merged into a single phase; thus, the phase transition proceeded through a solid-solution-like reaction.
217
Patent
Cathode active material for secondary battery and secondary battery comprising same
Bo Ram Lee,Hye Lim Jeon,Sun Sik Shin,Lee Sang Wook,Wang Mo Jung +4 more
- 30 Nov 2016
TL;DR: In this paper, a secondary battery consisting of lithium composite metal oxide particles and a primary battery comprising the cathode active material was presented. But the battery was not equipped with a battery charger.
29
Patent
Positive electrode active substance, positive electrode, secondary cell, cell pack, electric vehicle, power storage system, electric tool, and electronic equipment
Kazuaki Endoh,一顕 遠藤,Yosuke Hosoya,細谷 洋介,Hironobu Tsuji,洋悦 辻,Kazunari Motohashi,本橋 一成 +7 more
- 14 Feb 2013
TL;DR: In this article, the positive electrode of the present technology comprises a lithium-containing compound, and the lithium containing compound is such that element M2 that is different from element M1 is incorporated into the crystal structure of the surface layer region of a compound oxide represented by the general formula Li 1+a (Mn b Co c Ni 1-b-c ) 1-a M1 d O 2-e (where element M 2 is Mg).
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