期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 2, 期 44, 页码 19036-19045出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta04320k
关键词
-
资金
- Natural Science Foundation of China (NSFC) [21203132, 21473119, 51272168]
Silicon offers an extremely high theoretical specific capacity, but suffers from dramatic volume change during lithiation/delithiation processes, which typically leads to rapid anode degradation. Here we designed a facile and self-assembly strategy to construct a three-dimensional (3D) polymeric network as a promising binder for high-performance silicon submicro-particle (SiSMP) anodes through in situ interconnection of alginate chains by additive divalent cations. The highly cross-linked alginate network exhibits superb mechanical properties and strongly interacts with SiSMPs, which can tolerate the volume change of SiSMPs and restrict the volume expansion of the laminates to a large degree, thus effectively maintaining the mechanical and electrical integrity of the electrode and significantly improving the electrochemical performance. As a result, SiSMPs with a 3D binder network exhibit high reversible capacity, superior rate capability and much prolonged cycle life. Additionally, the 3D alginate binder was also successfully applied for the industrial submicro-silicon waste from solar cell production. With all of the advantages, the innovative way to tolerate the severe volume change by using a high-strength polymeric network may open a new approach to realize the industrial application of Si-based anodes in lithium-ion batteries.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据