Carbon Nanotube@RuO2 as a High Performance Catalyst for Li–CO2 Batteries
| Autor: | Shiyu Bie, Huigang Zhang, He Wenxiang, Zhou Liang, Meng Liu, Meili Du, Jianguo Liu, Wuwei Yan, Zhigang Zou, Zhentao Yu |
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| Rok vydání: | 2019 |
| Předmět: |
Nanocomposite
Materials science Composite number 02 engineering and technology Carbon nanotube 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Decomposition Cathode 0104 chemical sciences law.invention Catalysis Chemical engineering law Capacity limit General Materials Science 0210 nano-technology Faraday efficiency |
| Zdroj: | ACS Applied Materials & Interfaces. 11:5146-5151 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.8b20573 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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