2022年9月7日 · We design Al 2 O 3 -coated LNMO particles with a hollow microstructure aimed at suppressing electrolyte decomposition, minimizing volume change during cycling, and shortening the Li diffusion pathway to achieve maximum cathode utilization.

2023年6月1日 · The Co-free LiNi 0.5 Mn 1.5 O 4 (LNMO) is a promising cathode for lithium-ion batteries owing to its high operating voltage and low costs. However, the synthesis of LNMO is generally time and energy consuming, and its practical application is hindered by the lack of a compatible electrolyte.

2021年12月1日 · LNMO/ALD-graphite full cell achieves a capacity retention of 97% over 300 cycles. The high operating voltage of a spinel LiNi 0.5 Mn 1.5 O 4 (LNMO) cathode leads to electrolyte decomposition and accelerated deterioration of the electrode/electrolyte interface in lithium-ion cells.

Through comparison with LiMn2O4, the structure, the electrochemical properties of LNMO, the influence of Mn on the performance of LNMO, and the capacity fading mechanism are analyzed and...

2023年11月1日 · Spinel LiNi 0.5 Mn 1.5 O 4 (LNMO) is a promising cathode material due to its high operation voltage, cobalt free nature and low cost. High energy density of batteries could be realized by coupling LNMO with high-capacity Si based anodes, before which large active lithium loss at the anode should be addressed.

LiNi0.5Mn1.5O4 （LNMO）是下一代锂离子电池极具潜力的正极材料，其具有稳定的 尖晶石结构 和过渡金属（TM）化学计量比，从而有望实现高倍率性能和能量密度，研究人员对LNMO的物化性能做了许多研究，包括颗粒形状、尺寸，暴露晶面、晶格氧、TM计量比以及TM有序化，其中，关于TM有序化对LNMO的氧化反应机制仍存在争议，缺乏对锂脱嵌过程中TM结构演变的详细分析。 有鉴于此， 西班牙巴斯克研究与技术联盟的Marcus Fehse等人 采用Operando X 射线吸收近 …

2018年7月11日 · We show that during cycling an ionic contact resistance (R Cont.Ion) at the separator/anode interface evolves, which is most likely caused by manganese dissolution from the high-voltage cathode (LNMO). By simultaneously fitting EIS spectra in blocking and non-blocking conditions, we can deconvolute the anode impedance evolving over 86 cycles at ...

Further analysis of EIS for LNMO/LNMO and graphite/ graphite symmetric cells with the STD electrolyte suggests that the both LNMO and graphite electrodes are responsible for the significant...

The rate and cyclic performance of LNMO are simultaneously improved by a dual modification of Ti doping and in situ coating. When x(Ti) = 0.03, discharge specific capacity is 91.2 mAh/g at 15 C...

结合 EIS、SEM/EDX 和 ToF-SIMS 来解读 Al 集电器上界面的性质及其与 LNMO 颗粒上界面的相互作用。 LiNbO 3涂层和特定电解质添加剂适合降低LNMO正极的阻抗并提高倍率性能。 "点击查看英文标题和摘要" 看似被忽视的界面限制了 LNMO 阴极的倍率性能。 结合 EIS、SEM/EDX 和 ToF-SIMS 来解读 Al 集电器上界面的性质及其与 LNMO 颗粒上界面的相互作用。 LiNbO 3涂层和特定电解质添加剂适合降低LNMO正极的阻抗并提高倍率性能。