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首页> 外文期刊>Materials Letters >Electrochemicla performance of Sr~2+-doped LiNi_0.8Co_0.2O_2 as cathode material for lithium batteries synthesized via a wet chemistry route using oxalic acid
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Electrochemicla performance of Sr~2+-doped LiNi_0.8Co_0.2O_2 as cathode material for lithium batteries synthesized via a wet chemistry route using oxalic acid

机译：Sr〜2 +掺杂的LiNi_0.8Co_0.2O_2作为锂电池正极材料的湿化学法合成的草酸电化学性能

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摘要

Oxalic acid assisted sol-gel synthesis of Sr~2+ -doped LiNi_0.Co_0.2O_2 has been reported for the first time. Structural characterization was carried out using X-ray diffraction studies. Electrochemical studies were performed by assembling 2032 coin cells with lithium metal as an anode. The charge-discharge studies were performed galvonostatically at a 0.1 C rate from 3.0-4.2 V. Of all the doped compositions with dopant mole ratio ranging from 10~-8 to 10~-4, the compound with a dopant mole ratio of 10~-6 showed improved capacity and cyclabilty with a first cycle discharge capacity of 173 mAh/g and 10th cycle of 167 mAh/g. The improvement in capacity has been discussed using a defect model.
机译：草酸辅助溶胶-凝胶法合成Sr〜2 +掺杂的LiNi_0.Co_0.2O_2已有报道。使用X射线衍射研究进行结构表征。通过将2032个纽扣电池与锂金属作为阳极进行电化学研究。充电-放电研究是在3.0-4.2 V的0.1 C恒电流下恒电流进行的。在所有掺杂物摩尔比为10〜-8至10〜-4的掺杂组合物中，化合物的掺杂物摩尔比为10〜 -6显示出改进的容量和可循环性，第一循环放电容量为173 mAh / g，第10循环放电为167 mAh / g。已经使用缺陷模型讨论了容量的提高。

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