Huanyu Liang, Chunliu Zhu, Weiqian Tian, Chunyan Zhu, Yu Ma, Wei Hu, Jingyi Wu, Jingwei Chen, Rutao Wang, Minghua Huang, Yue Zhu, Huanlei Wang
Fluorides are viewed as promising conversion-type Li-ion battery cathodes to meet the desired high energy density. FeOF is a typical member of conversion-type fluorides, but its major drawback is sluggish kinetics upon deep discharge. Herein, a heterostructured FeOF-MXene composite (FeOF-MX) is demonstrated to overcome this limitation. The rationally designed FeOF-MX electrode features a microsphere morphology consisting of closely packed FeOF nanoparticles, providing fast transport pathways for lithium ions while a continuous wrapping network of MXene nanosheets ensures unobstructed electron transport, thus enabling high-rate lithium storage with enhanced pseudocapacitive contribution...
April 26, 2024: Small