Improving the performance of a non-aqueous lithium-air battery by defective titanium dioxides with oxygen vacancies
Improving the performance of a non-aqueous lithium-air battery by defective titanium dioxides with oxygen vacancies
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通过氧空位缺陷二氧化钛改善非水锂空气电池的性能
DOI:
10.1016/j.electacta.2016.04.007
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发表时间:
2016-06
影响因子:
6.6
通讯作者:
Zhongkuan Luo
中科院分区:
文献类型:
--
作者:
Yang Huang;Chunli Yin;Yanghai Xu;Zhongkuan Luo
In this work, we proposed using titanium dioxides (TiO2) with oxygen vacancies (H-TiO2) as cathode catalysts to improve the electrochemical performance of non-aqueous lithium-air batteries. Such H-TiO2catalysts were attained by a facile heat treatment of rutile TiO2and the existence of vacancies was confirmed by Raman spectra and X-ray photoelectron spectroscopy (XPS). It was demonstrated that due to the presence of defects which can facilitate the adsorption and dissociation of oxygen, the in-house lithium-air battery with H-TiO2can be discharged at the current densities of 0.3 and 0.5 mA cm−2while maintaining the specific capacities of 3.2 and 2.8 mAh cm−2, respectively, much higher than those of the batteries without catalysts or with pristine rutile TiO2. In addition, the cycling test showed that the battery with H-TiO2can undergo 400 and 372 cycles, respectively, at the current densities of 0.3 and 0.5 mA cm−2with a fixed specific capacity of 0.1 mAh cm−2and a cutoff discharge voltage of 2.0 V.
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影响因子:
9.2
作者:
张莉
通讯作者:
张莉
影响因子:
8.6
作者:
张莉
通讯作者:
张莉
影响因子:
2.3
作者:
T. Xiao;L. Xiaoyan;Z. Ling;Xing Yali;Yi Tian
通讯作者:
T. Xiao;L. Xiaoyan;Z. Ling;Xing Yali;Yi Tian
影响因子:
3.7
作者:
N. G. Petrik;G. Kimmel
通讯作者:
N. G. Petrik;G. Kimmel
影响因子:
8.4
作者:
Bella, Federico;Colo, Francesca;Gerbaldi, Claudio
通讯作者:
Gerbaldi, Claudio