Comparative Study of Li–CO<sub>2</sub> and Na–CO<sub>2</sub> Batteries with Ru@CNT as a Cathode Catalyst
Subashchandrabose Thoka, Chun-Ming Tsai, Zizheng Tong, Anirudha Jena, Fu‐Ming Wang, Chun‐Chuan Hsu, Ho Chang, Shu‐Fen Hu, Ru‐Shi Liu
Abstract
Alkali metal–carbon dioxide (Li/Na–CO2) batteries have generated widespread interest in the past few years owing to the attractive strategy of utilizing CO2 while still delivering high specific energy densities. Among these systems, Na–CO2 batteries are more cost effective than Li–CO2 batteries because the former uses cheaper and abundant Na. Herein, a Ru/carbon nanotube (CNT) as a cathode material was used to compare the mechanisms, stabilities, overpotentials, and energy densities of Li–CO2 and Na–CO2 batteries. The potential of Na–CO2 batteries as a viable energy storage technology was demonstrated.
Topics & Concepts
Materials scienceCathodeCatalysisCarbon nanotubeNanoarchitectures for lithium-ion batteriesEnergy storageAlkali metalCarbon fibersNanotechnologyChemical engineeringOrganic radical batteryEnergy densityElectrochemistryEngineering physicsElectrodeComposite materialPhysical chemistryOrganic chemistryChemistryComposite numberQuantum mechanicsPower (physics)PhysicsEngineeringAdvancements in Battery MaterialsAdvanced Battery Materials and TechnologiesAdvanced Battery Technologies Research