Patent
Mixed lithium manganese oxide and lithium nickel cobalt oxide positive electrodes
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TLDR
In this article, positive electrodes including a lithium nickel cobalt metal oxide are disclosed, where the general formula Li x Ni y CO z M n O 2, where M is selected from the group consisting of aluminum, titanium, tungsten, chromium, molybdenum, magnesium, tantalum, silicon, and combinations thereof, x is between about 0 and about 1 and can be varied within this range by electrochemical insertion and extraction, the sum of y+z+n is about 1, n ranges between above 0 to about 0.25, y andAbstract:
Positive electrodes including a lithium nickel cobalt metal oxide are disclosed. The lithium nickel cobalt metal oxides have the general formula Li x Ni y CO z M n O 2 , where M is selected from the group consisting of aluminum, titanium, tungsten, chromium, molybdenum, magnesium, tantalum, silicon, and combinations thereof, x is between about 0 and about 1 and can be varied within this range by electrochemical insertion and extraction, the sum of y+z+n is about 1, n ranges between above 0 to about 0.25, y and z are both greater than 0, and the ratio z/y ranges from above 0 to about 1/3. Also disclosed are composite positive electrodes including the above-described lithium nickel cobalt metal oxides together with a lithium manganese metal oxide of the formula Li x Mn 2−r M1 r O 4 , where r is a value between 0 and 1 and M1 is chromium, titanium, tungsten, nickel, cobalt, iron, tin, zinc, zirconium, silicon, or a combination thereof.read more
Citations
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References
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Journal ArticleDOI
Solid‐State Redox Reactions of LiCoO2 (R3̅m) for 4 Volt Secondary Lithium Cells
Tsutomu Ohzuku,Atsushi Ueda +1 more
TL;DR: LiCoO[sub 2] (R[bar 3]m; a = 2.82 [angstrom], c = 14.1 [angström] in hexagonal setting) was prepared and examined in nonaqueous lithium cells using 1M LiClO [sub 4] propylene carbonate solution at 30 C as mentioned in this paper.
PatentDOI
Nonaqueous secondary battery
TL;DR: In this article, a nonaqueous secondary battery consisting of a positive electrode active material, a negative electrode active materials, and a lithium salt is described, in which the negative active material contains a compound capable of intercalating and deintercalating lithium comprising an atom of the group IIIB, IVB, or VB of the periodic table.
Journal ArticleDOI
Comparative study of LiCoO2, LiNi12Co12O2 and LiNiO2 for 4 volt secondary lithium cells
TL;DR: LiNiO2 has more than 150 mAh g−1 of rechargeable capacity with working voltages above 3.5 V in 1 M LiClO4 propylene carbonate solution.
Patent
Non-aqueous secondary battery
Noriyuki Inoue,Yukio Maekawa,Tsutomu Miyasaka,Yoshikatsu Kagawa,Akihiro Matsufuji,Hideki Naito,Kensuke Goda,Osamu Takahashi,Toshiharu Nagamachi,Chuzo Kobayashi,Shoichiro Yasunami +10 more
TL;DR: In this paper, a non-aqueous secondary battery with improved charge and discharge cycle property and high discharge voltage, high energy density, high capacity and increased stability is presented. But, the negative electrode material mainly consists of at least one member selected from the group consisting of amorphous chalcogen compounds and at least three atoms from the groups consisting of Group 13, 14, 15 and 2 atoms of Periodic Table.
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Nonaqueous electrolyte secondary battery
TL;DR: In this paper, the cycle life of a secondary battery can be improved by forming a layer mainly made of carbon into which lithium ions can be inserted or removed, which is formed on one face or both faces of a lithium metal plate or a lithium alloy plate for a negative electrode.