Activation of a Li-rich Solid-Solution Layered Li[Ni0.18Li0.20Co0.03Mn0.58]O2 Cathode and Retention of High Capacities via an Electrochemical Pretreatment with a Low Discharge Voltage Limit
Activation of a Li-rich Solid-Solution Layered Li[Ni0.18Li0.20Co0.03Mn0.58]O2 Cathode and Retention of High Capacities via an Electrochemical Pretreatment with a Low Discharge Voltage Limit
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DOI：
10.1246/cl.2012.418
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发表时间：
2012-04-05
影响因子：
1.6
通讯作者：
Sato, Yuichi
中科院分区：
文献类型：
--
作者：
Abe, Masaru;Matsumoto, Futoshi;Sato, Yuichi
The magnitude and cycle stability of the charge-discharge capacities of a Li-rich solid-solution layered cathode material, Li[Ni0.18Li0.20Co0.03Mn0.58]O-2, were examined over large voltage windows of 1.2-4.4 V (vs. Li/Li+). Discharging to below 1.5 V activated the cathode material and enabled it to reach larger charge-discharge capacities of over 300 mA h g(-1). Moreover, to retain a high capacity of over 300 mA h g(-1), our original electrochemical precycling treatment (stepwise control of the discharge voltage limit) was applied, resulting in improved stability of the charge-discharge capacity of over 300 mA h g(-1) for at least 35 cycles.
