当前位置：
X-MOL 学术
›
ACS Appl. Mater. Interfaces
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Construction and Interfacial Modification of a β-PbSnF4 Electrolyte with High Intrinsic Ionic Conductivity for a Room-Temperature Fluoride-Ion Battery
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-07-24 , DOI: 10.1021/acsami.3c07382 Jiali Liu 1 , Lingguang Yi 1 , Xiaoyi Chen 1 , Yi Tang 1 , Zihao Zang 1 , Changfei Zou 1 , Peng Zeng 1 , Dongdu Li 1 , Jingcheng Xia 1 , Shuhan Ni 1 , Xianyou Wang 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-07-24 , DOI: 10.1021/acsami.3c07382 Jiali Liu 1 , Lingguang Yi 1 , Xiaoyi Chen 1 , Yi Tang 1 , Zihao Zang 1 , Changfei Zou 1 , Peng Zeng 1 , Dongdu Li 1 , Jingcheng Xia 1 , Shuhan Ni 1 , Xianyou Wang 1
Affiliation
|
Solid-state fluoride-ion batteries (FIBs) attract significant attention worldwide because of their high theoretical volume, energy density, and high safety. However, the large interfacial resistance caused by the point–point contact between the electrolyte and the electrode seriously impedes their further development. Using liquid-phase therapy to construct a conformal interface is a good choice to eliminate the influence of inadequate contact between the electrode and the electrolyte. In this study, a β-PbSnF4 solid-state electrolyte with high room-temperature ionic conductivity is prepared, and a trace amount of the liquid electrolyte (LE) between the electrode and the electrolyte is introduced in order to minimize the interfacial resistance and enhance the cycle life. The Allen-Hickling simulations show that the introduction of an interfacial wetting agent (LE) can significantly reduce the energy barrier of charge transfer and mass transfer processes at the interface and reciprocate FIBs an enhanced interfacial reaction kinetics. As a result, the initial discharge capacity of the fabricated FIBs is 210.5 mAh g–1 and the capacity retention rate is 82.6% after 50 cycles at room temperature, while the initial discharge capacity of the unmodified battery is only 170.9 mAh g–1 and the capacity retention rate is 22.1% after 50 cycles. Therefore, interfacial modification with a trace amount of LE provides a significant exploration for the improvement of FIB performances.
中文翻译：
室温氟离子电池用高本征离子电导率β-PbSnF4电解质的构建和界面改性
固态氟离子电池（FIB）因其高理论体积、能量密度和高安全性而受到全世界的广泛关注。然而，电解质与电极之间的点-点接触引起的大界面电阻严重阻碍了其进一步发展。采用液相疗法构建保形界面是消除电极与电解质接触不充分影响的良好选择。本研究制备了具有高室温离子电导率的β-PbSnF 4固态电解质，并在电极和电解质之间引入微量的液体电解质（LE），以最大限度地减少界面电阻和提高循环寿命。Allen-Hickling 模拟表明，界面润湿剂 (LE) 的引入可以显着降低界面处电荷转移和传质过程的能垒，并增强界面反应动力学。结果，所制备的FIB的首次放电容量为210.5 mAh g –1，在室温下循环50次后容量保持率为82.6%，而未改性电池的首次放电容量仅为170.9 mAh g –1， 50次循环后容量保持率为22.1%。因此，微量LE的界面改性为FIB性能的提高提供了重要的探索。
更新日期：2023-07-24
中文翻译：
室温氟离子电池用高本征离子电导率β-PbSnF4电解质的构建和界面改性
固态氟离子电池（FIB）因其高理论体积、能量密度和高安全性而受到全世界的广泛关注。然而，电解质与电极之间的点-点接触引起的大界面电阻严重阻碍了其进一步发展。采用液相疗法构建保形界面是消除电极与电解质接触不充分影响的良好选择。本研究制备了具有高室温离子电导率的β-PbSnF 4固态电解质，并在电极和电解质之间引入微量的液体电解质（LE），以最大限度地减少界面电阻和提高循环寿命。Allen-Hickling 模拟表明，界面润湿剂 (LE) 的引入可以显着降低界面处电荷转移和传质过程的能垒，并增强界面反应动力学。结果，所制备的FIB的首次放电容量为210.5 mAh g –1，在室温下循环50次后容量保持率为82.6%，而未改性电池的首次放电容量仅为170.9 mAh g –1， 50次循环后容量保持率为22.1%。因此，微量LE的界面改性为FIB性能的提高提供了重要的探索。
京公网安备 11010802027423号