材料科学
阳极
堆积
电化学
电极
纳米颗粒
储能
纳米技术
化学工程
锂(药物)
法拉第效率
电导率
化学
有机化学
内分泌学
物理化学
工程类
功率(物理)
物理
医学
量子力学
作者
Yu Cui,Jie Wang,Xin Wang,Jinwen Qin,Minhua Cao
标识
DOI:10.1002/asia.202000017
摘要
A facile hybrid assembly between Ti3 C2 Tx MXene nanosheets and (3-aminopropyl) triethoxylsilane-modified Si nanoparticles (NH2 -Si NPs) was developed to construct multilayer stacking of Ti3 C2 Tx nanosheets with NH2 -Si NPs assembling together (NH2 -Si/Ti3 C2 Tx ). NH2 -Si/Ti3 C2 Tx exhibits a significantly enhanced lithium storage performance compared to pristine Si, which is attributed to the robust crosslinking architecture and considerably improved electrical conductivity as well as shorter Li+ diffusion pathways. The optimized NH2 -Si/Ti3 C2 Tx anode with Ti3 C2 Tx : NH2 -Si mass ratio of 4 : 1 displays an enhanced capacity (864 mAh g-1 at 0.1 C) with robust capacity retention, which is significantly higher than those of NH2 -Si NPs and Ti3 C2 Tx anodes. Furthermore, this work demonstrates the important effect of the MXene-based electrode architecture on the electrochemical performance and can guide future work on designing high-performance Si/MXene hybrids for energy storage applications.
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