Electrochemical characteristics of LiNi1−xCoxO2 as positive electrode materials for lithium secondary batteries
| Autor: | Toshiyuki Nohma, Atsuhiro Funahashi, Yoshinori Kida, Katsunori Yanagida, Ikuo Yonezu, Akira Kinoshita, Atsushi Yanai |
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| Rok vydání: | 2001 |
| Předmět: |
Long cycle
Electrode material Renewable Energy Sustainability and the Environment Nickel oxide Energy Engineering and Power Technology Mineralogy chemistry.chemical_element Electrochemistry chemistry.chemical_compound chemistry Chemical engineering Lithium Lithium oxide Electrical and Electronic Engineering Physical and Theoretical Chemistry Cobalt oxide |
| Zdroj: | Journal of Power Sources. 102:283-287 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/s0378-7753(01)00806-0 |
| Popis: | Physical properties and electrochemical behavior of LiNi 1− x Co x O 2 (0.1≤ x ≤0.9) were investigated for use as positive electrode material in lithium secondary batteries with long cycle life. LiNi 1− x Co x O 2 are characterized by an α-NaFeO 2 type structure. In a three-electrode test cell, LiNi 0.7 Co 0.3 O 2 showed a large discharge capacity of 159 Ah kg −1 , and good cycle performance, with a discharge capacity deterioration ratio of 0.73% per cycle. In a 2 Wh-class cell, LiNi 0.7 Co 0.3 O 2 exhibited a discharge capacity of 520 mAh, and good cyclability, with a discharge capacity deterioration ratio of 0.026% per cycle. LiNi 0.7 Co 0.3 O 2 is a promising positive electrode material, having the largest discharge capacity and the best cycle performance in the series of LiNi 1− x Co x O 2 compounds. |
| Databáze: | OpenAIRE |
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