Details

Autor(en) / Beteiligte

• Li, Xiaohui
• Tang, Yakun
• Liu, Lang
• Gao, Yang
• Zhu, Caixia
• NuLi, Yanna
• Yang, Tongyu

Titel

2D Ti3C2 MXene embedded with Co(II)(OH)n nanoparticles as the cathode material for hybrid magnesium–lithium-ion batteries

Ist Teil von

• Journal of materials science, 2021, Vol.56 (3), p.2464-2473

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• MXene, the 2D layered material, is intensively investigated for application in the energy storage field due to its multiple advantages of the high electrical conductivity, hydrophilicity and the plastic layer structure. Herein, a composite (M(II)(OH) n @Ti 3 C 2 ) of Ti 3 C 2 MXene matrices embedded with ultrafine M(II)(OH) n (M = Fe/Co/Ni) particles is in-situ prepared. M(II)(OH) n particles are tightly grown on the surface and between the interlayers of Ti 3 C 2 MXene by strong Ti–O–Co covalent bonds. Co(II)(OH) n @Ti 3 C 2 exhibits the remarkable performance in hybrid magnesium–lithium batteries (HMLBs) due to the redox capacitive contribution and “pillar effect” of Co(II)(OH) n particles between the interlayers of Ti 3 C 2 MXene. It exhibits a promising reversible capacity and excellent cycling stability. Its reversible capacity maintains 81.1 mAh g −1 after 600 cycles at 100 mA g −1 , and the coulombic efficiency is nearly 100%. Therefore, it is an effective strategy to enhance the electrochemical performance of HMLBs by increasing redox capacitance of MXene cathodes. Graphic abstract The Co(II)(OH) n nanoparticles decorated Ti 3 C 2 nanocomposite (M(II)(OH) n @Ti 3 C 2 ) was successfully synthesized by three processing steps. The Co(II)(OH) n @Ti 3 C 2 nanocomposite exhibits the superior performance in HMLBs due to the synergistic effect of the Co(II)(OH) n nanoparticles and the Ti 3 C 2 matrix.