Universal Strategy for Preparing Highly Stable PBA/Ti3C2TxMXene toward Lithium-Ion Batteries via Chemical Transformation

Xiaoliang Gao, Yihe Zheng, Jin Chang, Hai Xu, Zengyu Hui, Henghan Dai, Huifang Wang, Zhongming Xia, Jinyuan Zhou, Gengzhi Sun

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47 引用 (Scopus)

摘要

Prussian blue analogues (PBAs) are believed to be intriguing anode materials for Li+storage because of their tunable composition, designable topologies, and tailorable porous structures, yet they suffer from severe capacity decay and inferior cycling stability due to the volume variation upon lithiation and high electrical resistance. Herein, we develop a universal strategy for synthesizing small PBA nanoparticles hosted on two-dimensional (2D) MXene or rGO (PBA/MX or PBA/rGO) via an in situ transformation from ultrathin layered double hydroxides (LDH) nanosheets. 2D conductive nanosheets allow for fast electron transport and guarantee the full utilization of PBA even at high rates; at the meantime, PBA nanoparticles effectively prevent 2D materials from restacking and facilitate rapid ion diffusion. The optimized Ni0.8Mn0.2-PBA/MX as an anode for lithium-ion batteries (LIBs) delivers a capacity of 442 mAh g-1at 0.1 A g-1and an excellent cycling robustness in comparison with bare PBA bulk crystals. We believe that this study offers an alternative choice for rationally designing PBA-based electrode materials for energy storage.

源语言英语
页(从-至)15298-15306
页数9
期刊ACS Applied Materials and Interfaces
14
13
DOI
出版状态已出版 - 6 4月 2022

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