材料科学
普鲁士蓝
阳极
锂(药物)
电极
纳米技术
纳米颗粒
离子
储能
化学工程
化学稳定性
电化学
工程类
内分泌学
物理
物理化学
功率(物理)
医学
化学
量子力学
作者
Xiaoliang Gao,Yihe Zheng,Jin Chang,Hai Xu,Zengyu Hui,Henghan Dai,Hong Wang,Zhongming Xia,Jinyuan Zhou,Geng Zhi Sun
标识
DOI:10.1021/acsami.2c01382
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-1 at 0.1 A g-1 and 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.
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