苯胺辅助层状MoO₃用于构建高性能锌离子电池的研究

Aniline-Assisted Layered MoO₃ for the Construction of High-Performance Zinc Ion Batteries

摘要: 采用水热法将苯胺(PANI)插入MoO₃层间，PANI的插层促进了MoO₃的电荷储存，增强了导电性，同时减弱了Zn²⁺与MoO₃主体之间的静电相互作用，加速Zn²⁺的传输。鉴于这些特性，PANI-MoO₃//Zn电池在1 A∙g⁻¹电流条件下表现出超高的比容量352 mAh∙g⁻¹，具有卓越的倍率性能在当电流密度从1 A∙g⁻¹增加到10 A∙g⁻¹时，PANI-MoO₃电极仍然保持着133 mAh∙g⁻¹的放电比容量(保持率为40%)，而MoO₃电极仅有72 mAh∙g⁻¹的放电比容量(保持率为29%)。此外，还具备出色的循环性能，经过1000次循环后，PANI-MoO₃//Zn电池的容量保持率比MoO₃//Zn电池提高了132%。

Abstract: The PANI was inserted between the MoO₃ layers using a hydrothermal method, and the insertion of PANI promoted the charge storage of MoO₃ and enhanced the electrical conductivity, while attenuating the electrostatic interactions between Zn²⁺ and the main body of MoO₃ and accelerating the transport of Zn²⁺. In view of these properties, the PANI-MoO₃//Zn battery exhibits an ultra-high specific capacity of 352 mAh∙g⁻¹ at a current of 1 A∙g⁻¹, with excellent multiplicative performance at when the current density is increased from 1 A∙g⁻¹ to 10 A∙g⁻¹ When the current density is increased from 1 A∙g⁻¹ to 10 A∙g⁻¹, the PANI-MoO₃ electrode still maintains a discharge specific capacity of 133 mAh∙g⁻¹ (40% retention), while the MoO₃ electrode has a discharge specific capacity of only 72 mAh∙g⁻¹ (29% retention). In addition, there is excellent cycling performance, with the PANI-MoO₃//Zn battery showing a 132% improvement in capacity retention over the MoO₃//Zn battery after 1000 cycles.