32 research outputs found
Pseudocapacitance of MXene nanosheets for high-power sodium-ion hybrid capacitors
High-power Na-ion batteries have tremendous potential in various large-scale applications. However, conventional charge storage through ion intercalation or double-layer formation cannot satisfy the requirements of such applications owing to the slow kinetics of ion intercalation and the small capacitance of the double layer. The present work demonstrates that the pseudocapacitance of the nanosheet compound MXene Ti2C achieves a higher specific capacity relative to double-layer capacitor electrodes and a higher rate capability relative to ion intercalation electrodes. By utilizing the pseudocapacitance as a negative electrode, the prototype Na-ion full cell consisting of an alluaudite Na2Fe2(SO4)3 positive electrode and an MXene Ti2C negative electrode operates at a relatively high voltage of 2.4V and delivers 90 and 40mAhg-1 at 1.0 and 5.0Ag -1 (based on the weight of the negative electrode), respectively, which are not attainable by conventional electrochemical energy storage systems
Dilute aqueous-aprotic hybrid electrolyte enabling a wide electrochemical window through solvation structure engineering
202308 bckwAccepted ManuscriptRGCOthersCityU Applied Research Grant; National Natural Science Foundation of ChinaPublishe
Raising the cycling stability of aqueous lithium-ion batteries by eliminating oxygen in the electrolyte
Novel sodium bismuth sulfide nanostructures: a promising anode materials for sodium-ion batteries with high capacity
Physical and electrochemical characterizations of LiFePO 4-incorporated Ag nanoparticles
10.1007/s10008-010-1085-xJournal of Solid State Electrochemistry151205-20
High rate capability caused by surface cubic spinels in Li-rich layer-structured cathodes for Li-ion batteries
10.1038/srep03094Scientific Reports3