.png){kind=icon}
返回
Stabilizing the Solid Electrolyte Interface Using a Zero-Strain Feature Protective Layer for a High-Performance Silicon-Graphite Anode
.png){kind=icon}
PRE
AI
DOI：10.1021/acs.energyfuels.4c01846.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Commercial graphite-based Li-ion batteries almost reached their maximum energy density limits, and the need for high-energy batteries increased tremendously. Silicon (Si) has become a viable anode; however, its enormous volume expansion limits its application. In this regard, the silicon-graphite (Si-G) composite is considered a potential anode to boost the energy density of graphite and alleviate the limitations of silicon. However, the formation of an unstable solid electrolyte interface (SEI) layer impedes its use in practical applications. Hence, constructing a stable SEI layer is crucial to attaining stable and long-term cyclability for Si-G. In this study, we investigated the influence of the Li4Ti5O12 (LTO) protective coating on the Si-G composite anode toward the stable SEI layer formation. We found that the LTO coating on Si-G effectively suppresses the parasitic reaction of organic electrolytes with Si and facilitates stable SEI layer formation. In particular, the cross-sectional analysis of the LTO-Si-G electrode using transmission electron microscopy after cycling confirms the presence of stable and thin SEI. In addition, the electrode showed a higher Coulombic efficiency of 99.82%, a high specific capacity of 570.48 mAh g(-1), and enhanced capacity retention of 97.7% after 75 cycles. Our findings highlight that constructing a stable SEI by encasing the Si-G surface with LTO is a promising way to enhance the cycling performance of high-energy Li-ion batteries with the Si-G composite anode.
Keyword:
ION
COMPOSITE
期刊
E
IF:
5.3
论文数:
2.5K
被引数:
7.5W
机构
引用论文
A review of recent developments in Si/C composite materials for Li-ion batteries锂离子电池用Si/C复合材料的研究进展.png)
ENERGY STORAGE MATERIALS
ENERGY STORAGE MATERIALSIF20.2
PREAI
分享收藏Al2O3 protective coating on silicon thin film electrodes and its effect on the aging mechanisms of lithium metal and lithium ion cells硅薄膜电极上的Al2O3保护涂层及其对锂金属和锂离子电池老化机理的影响
OAAI
OAAI分享收藏Two-dimensional porous silicon nanosheets as anode materials for high performance lithium-ion batteries二维多孔硅纳米片作为高性能锂离子电池负极材料的研究NANOSCALEOAAI
NANOSCALEIF5.1
OAAI分享收藏Surface Coating Constraint Induced Self-Discharging of Silicon Nanoparticles as Anodes for Lithium Ion Batteries表面包覆约束诱导的硅纳米颗粒作为锂离子电池负极的自放电NANO LETTERS
NANO LETTERSIF9.1
PREAI
分享收藏分享收藏Extended Lifespan of Low-Cost Metal Silicon Anodes via a One-Step Wet Ball-Milling Process for Ultra-Thin Polymer Protecting Layer and Optimal Particle Size通过一步湿法球磨工艺延长低成本金属硅阳极的使用寿命，以获得超薄聚合物保护层和最佳粒径
PREAI
分享收藏Composites of Silicon@Li4Ti5O12 and Graphite for High-Capacity Lithium-Ion Battery Anode Materials用于高容量锂离子电池负极材料的硅 @ Li4Ti5O12和石墨的复合材料
PREAI
分享收藏Suppressing the Side Reaction by a Selective Blocking Layer to Enhance the Performance of Si-Based Anodes通过选择性阻挡层抑制副反应以增强硅基阳极的性能NANO LETTERS
NANO LETTERSIF9.1
PREAI
分享收藏
查看更多内容