Effective Ru/CNT Cathode for Rechargeable Solid-State Li-CO2Batteries
Journal
ACS Applied Materials and Interfaces
Journal Volume
13
Journal Issue
37
Pages
44266-44273
Date Issued
2021
Author(s)
Abstract
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. ?
Subjects
and Li-metal anode
LAGP solid electrolyte
Ru nanoparticles
Ru/CNT cathode
solid-state Li-CO2batteries
Aluminum compounds
Cathodes
Electrocatalysts
Germanium compounds
Lithium compounds
Metal nanoparticles
Multiwalled carbon nanotubes (MWCN)
Solid electrolytes
And li-metal anode
Carbon nanotube cathodes
Discharge capacities
Li metal
Metal anodes
Multi-walled-carbon-nanotubes
Ru/carbon nanotube cathode
Solid-state li-CO2battery
Carbon dioxide
Type
journal article