Carbon Nanotube@RuO 2 as a High Performance Catalyst for Li-CO 2 Batteries

Efficient electrocatalysts for Li CO decomposition play an important role in Li-CO batteries. In this paper, carbon nanotubes (CNTs) decorated with RuO is firstly introduced as cathode materials for Li-CO batteries. The CNT@RuO composite can not only deliver a high specific capacity but also a lower...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2019-02, Vol.11 (5), p.5146-5151
Main Authors: Bie, Shiyu, Du, Meili, He, Wenxiang, Zhang, Huigang, Yu, Zhentao, Liu, Jianguo, Liu, Meng, Yan, Wuwei, Zhou, Liang, Zou, Zhigang
Format: Article
Language:English
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Summary:Efficient electrocatalysts for Li CO decomposition play an important role in Li-CO batteries. In this paper, carbon nanotubes (CNTs) decorated with RuO is firstly introduced as cathode materials for Li-CO batteries. The CNT@RuO composite can not only deliver a high specific capacity but also a lower charge voltage. With the CNT@RuO cathodes, the Coulombic efficiency still remains around 100% until the 15th cycle. The charge voltage of early 30 cycles at a current of 50 mA·g with a capacity limit of 500 mAh·g can be fully lowered under 4.0 V. Particularly, the CNT@RuO cathode can realize most decomposition of prefilled Li CO and show a platform at around 3.9 V. This catalytic activity toward both in situ formed and preloaded Li CO is more feasible for practical application in complex environment.
ISSN:1944-8244
1944-8252
DOI:10.1021/acsami.8b20573