| Literature DB >> 30640419 |
Shiyu Bie1, Meili Du1, Wenxiang He1, Huigang Zhang1, Zhentao Yu1, Jianguo Liu1,2, Meng Liu1, Wuwei Yan2, Liang Zhou2, Zhigang Zou1,2.
Abstract
Efficient electrocatalysts for Li2CO3 decomposition play an important role in Li-CO2 batteries. In this paper, carbon nanotubes (CNTs) decorated with RuO2 is firstly introduced as cathode materials for Li-CO2 batteries. The CNT@RuO2 composite can not only deliver a high specific capacity but also a lower charge voltage. With the CNT@RuO2 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-1 with a capacity limit of 500 mAh·g-1 can be fully lowered under 4.0 V. Particularly, the CNT@RuO2 cathode can realize most decomposition of prefilled Li2CO3 and show a platform at around 3.9 V. This catalytic activity toward both in situ formed and preloaded Li2CO3 is more feasible for practical application in complex environment.Entities:
Keywords: CO2 capture and utilization; Li−CO2 batteries; decomposition of Li2CO3; electrochemical catalyst; nanocomposites
Year: 2019 PMID： 30640419 DOI： 10.1021/acsami.8b20573
Source DB: PubMed Journal: ACS Appl Mater Interfaces ISSN： 1944-8244 Impact factor: 9.229