Nano-size porous carbon spheres as a high-capacity anode with high initial coulombic efficiency for potassium-ion batteries
Hehe Zhang, Chong Luo, Hanna He, Hong‐Hui Wu, Li Zhang, Qiaobao Zhang, Haiyan Wang, Ming‐Sheng Wang
Abstract
can be retained after 1500 cycles, respectively. Quantitative analysis reveals that this optimized structure leads to an enhanced surface-controlled contribution, resulting in fast potassiation kinetics and electronic|ionic conductivities, which are regarded as essential features for potassium storage. Our findings in this work provide an efficient strategy to significantly improve potassium storage capacity while maintaining a high ICE for hard carbon electrodes.
Topics & Concepts
Faraday efficiencyAnodeMaterials sciencePotassiumCarbon fibersNano-PorosityPotassium-ion batteryIonChemical engineeringSPHERESComposite materialChemistryMetallurgyElectrodeOrganic chemistryAerospace engineeringComposite numberEngineeringLithium vanadium phosphate batteryPhysical chemistryAdvancements in Battery MaterialsAdvanced Battery Technologies ResearchExtraction and Separation Processes