Effective Ru/CNT Cathode for Rechargeable Solid-State Li-CO2Batteries

Kirankumar Venkatesan Savunthari, Chien Hung Chen, You Ruei Chen, Zizheng Tong, Kevin Iputera, Fu Ming Wang, Chun Chuan Hsu, Da Hua Wei, Shu Fen Hu, Ru Shi Liu*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

摘要

An effective Ru/CNT electrocatalyst plays a crucial role in solid-state lithium-carbon dioxide batteries. In the present article, ruthenium metal decorated on a multi-walled carbon nanotubes (CNTs) is introduced as a cathode for the lithium-carbon dioxide batteries with Li1.5Al0.5Ge1.5(PO4)3 solid-state electrolyte. The Ru/CNT cathode exhibits a large surface area, maximum discharge capacity, excellent reversibility, and long cycle life with low overpotential. The electrocatalyst achieves improved electrocatalytic performance for the carbon dioxide reduction reaction and carbon dioxide evolution reaction, which are related to the available active sites. Using the Ru/CNT cathode, the solid-state lithium-carbon dioxide battery exhibits a maximum discharge capacity of 4541 mA h g-1 and 45 cycles of battery life with a small voltage gap of 1.24 V compared to the CNT cathode (maximum discharge capacity of 1828 mA h g-1, 25 cycles, and 1.64 V as voltage gap) at a current supply of 100 mA g-1 with a cutoff capacity of 500 mA h g-1. Solid-state lithium-carbon dioxide batteries have shown promising potential applications for future energy storage.

原文英語
頁(從 - 到)44266-44273
頁數8
期刊ACS Applied Materials and Interfaces
13
發行號37
DOIs
出版狀態已發佈 - 2021 九月 22

ASJC Scopus subject areas

  • 材料科學(全部)

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