Ru@ZrO2/C-273催化剂的制备及其在锂氧电池中的电化学性能Preparation and electrochemical properties of Ru@ZrO2/C-273 catalyst for Li-O2 batteries
阮艳莉,顾祥顺,王天宇
摘要(Abstract):
为开发具有高能量密度的锂氧电池,以PS微球为模板,合成了Uio-66衍生的ZrO_2/C-273复合材料,负载Ru后得到Ru@ZrO_2/C-273正极材料,组装锂氧电池,并对其性能进行了测试。实验结果表明:Ru@ZrO_2/C-273锂氧电池可以有效提高锂氧电池的放电性能,当电流密度为100 mA/g时,具有7 429 m Ah/g的放电比容量,高于Ru@ZrO_2/C锂氧电池的放电比容量(6 164 mAh/g);随电流密度的不断增加,Ru@ZrO_2/C-273锂氧电池在200 mA/g和300 mA/g的电流密度下分别可以获得6 598 m Ah/g和4 533 mAh/g的放电比容量;在限制比容量为500 mAh/g的循环测试中,Ru@ZrO_2/C-273锂氧电池具有较好的稳定性,可以稳定循环45圈。
关键词(KeyWords): 锂氧电池;氧电极;Ru;聚苯乙烯
基金项目(Foundation): 国家自然科学基金资助项目(21403153)
作者(Author): 阮艳莉,顾祥顺,王天宇
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