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The mosaic structure design to improve the anchoring strength of SiOx@C@Graphite anode
Materials Today Chemistry ( IF 6.7 ) Pub Date : 2021-10-13 , DOI: 10.1016/j.mtchem.2021.100599
H. Dong 1, 2, 3 , J. Wang 2 , H. Ding 2 , P. Wang 2 , R. Song 2 , N. Zhang 1, 2, 3 , F. Li 4 , S. Li 1, 2, 3
Materials Today Chemistry ( IF 6.7 ) Pub Date : 2021-10-13 , DOI: 10.1016/j.mtchem.2021.100599
H. Dong 1, 2, 3 , J. Wang 2 , H. Ding 2 , P. Wang 2 , R. Song 2 , N. Zhang 1, 2, 3 , F. Li 4 , S. Li 1, 2, 3
Affiliation
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Silicon oxide (SiOx )-based anodes have aroused great interest as the most promising alternative anode in the practical application of high-performance lithium-ion batteries. However, the electrochemical performance is inhibited because of the large volume change, and the electrode structure deteriorates during the cycling process, which hinders their practical application. In this article, a novel fabrication method for the synthesis of high-performance SiOx @C@Graphite composites is presented. SiOx particles are anchored on the graphite surface by chemical vapor deposition and compression molding. This structure makes up the shortcomings of poor electrical conductivity and poor bonding strength between SiOx and graphite particles. It is beneficial to form a stable solid electrolyte interface and helps to maintain the structural integrity of electrode materials. As a result, the synthetic SiOx @C@Graphite anode shows a high reversible capacity (2698.8 mA h), excellent cycle stability (about 76.9% capacity retention for 500 cycles) and a superior rate ability. Our research hopes to provide a new idea for improving the bonding strength of the surface coating.
中文翻译：
马赛克结构设计，提高SiOx@C@Graphite负极的锚固强度
基于氧化硅 （SiOx） 的负极作为高性能锂离子电池实际应用中最有前途的替代负极引起了极大的兴趣。然而，由于体积变化大，电化学性能受到抑制，并且在循环过程中电极结构恶化，阻碍了其实际应用。本文提出了一种合成高性能SiOx@C@Graphite复合材料的新型制备方法。SiOx 颗粒通过化学气相沉积和压缩成型锚定在石墨表面。这种结构弥补了 SiOx 与石墨颗粒之间导电性差、结合强度差的缺点。有利于形成稳定的固体电解质界面，有助于保持电极材料的结构完整性。因此，合成SiOx@C@Graphite负极显示出高可逆容量 （2698.8 mA h）、出色的循环稳定性（500 次循环中容量保持率约为 76.9%）和卓越的倍率能力。我们的研究希望为提高表面涂层的结合强度提供新的思路。
更新日期：2021-10-13
中文翻译：
马赛克结构设计，提高SiOx@C@Graphite负极的锚固强度
基于氧化硅 （SiOx） 的负极作为高性能锂离子电池实际应用中最有前途的替代负极引起了极大的兴趣。然而，由于体积变化大，电化学性能受到抑制，并且在循环过程中电极结构恶化，阻碍了其实际应用。本文提出了一种合成高性能SiOx@C@Graphite复合材料的新型制备方法。SiOx 颗粒通过化学气相沉积和压缩成型锚定在石墨表面。这种结构弥补了 SiOx 与石墨颗粒之间导电性差、结合强度差的缺点。有利于形成稳定的固体电解质界面，有助于保持电极材料的结构完整性。因此，合成SiOx@C@Graphite负极显示出高可逆容量 （2698.8 mA h）、出色的循环稳定性（500 次循环中容量保持率约为 76.9%）和卓越的倍率能力。我们的研究希望为提高表面涂层的结合强度提供新的思路。
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