journal article·2019-02-06

Carbon Nanotube@RuO2 as a High Performance Catalyst for Li–CO2 Batteries

Shiyu Bie, Meili Du, Wenxiang He, Huigang Zhang, Zhentao Yu, Jianguo Liu, Meng Liu, Wuwei Yan, Liang Zhou, Zhigang Zou

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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.
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Research context

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Chemical Synthesis and Characterization

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Jiangsu Key Laboratory for Nano Technology, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 22 Hankou Road, Nanjing 210093, China

Kunshan Sunlaite New Energy Co., Ltd., 1666# South Zuchongzhi Road, Kunshan 215347, Jiangsu, China

Funding

Ministry of Education of the People's Republic of China · Natural Science Foundation of Jiangsu Province · Government of Jiangsu Province · Nanjing University · National Natural Science Foundation of China · Graduate Innovation Foundation, Nanjing University · Liaoning Province · Priority Academic Program Development of Jiangsu Higher Education Institutions

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