...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nano Energy >Petaloid-shaped ZnO coated carbon felt as a controllable host to construct hierarchical Li composite anode
【24h】

Petaloid-shaped ZnO coated carbon felt as a controllable host to construct hierarchical Li composite anode

机译：Petaloid形ZnO涂层碳含有可控宿主，以构建分层LI复合阳极

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Prestoring Li metal into the 3D host via thermal infusion strategy has been considered as an effective approach on suppressing Li dendrites growth of Li-metal anode during cycling. However, the fast Li infusing process generally induces uncontrollable and undesirable structures during the formation of composite Li metal anode. It is widely accepted that both physical and chemical interactions between the molten Li and the hosts provide driving forces for Li infusing into the host, but which one plays the dominant role has not been explored clearly. In this work, a 3D carbon felt coated by petaloid zinc oxide (CFZO) is designed as a controllable host for prestoring Li metal via thermal infusion method. It is revealed that the morphology induced physical driving force plays a more important role than the chemical reaction between ZnO and molten Li in the thermal infusion process. The physical driving force originates from the capillarity effect, depending on the roughness of the host according to Wenzel's model. An adjustable Li infusing process can be controlled to fabricate the Li composite electrode with a hierarchical structure (with dense Li-rich layer and porous Li-poor layer). The unique structure of the CFZO-Li not only provides enough spaces for Li deposition, but also disperses local current density to induce a uniform Li deposition behavior, thus Li dendrites can be suppressed effectively. As a result, CFZO-Li anode exhibits promising cycle stability when coupled with both Li-containing (LiNi0.8Co0.15Al0.05O2) and Li-free (sulfur) cathodes.
机译：通过热输注策略将Li金属预先夺取到3D主机中，被认为是循环期间抑制Li金属阳极的Li树枝状生长的有效方法。然而，快速锂输注过程通常在复合锂金属阳极的形成期间诱导无法控制和不希望的结构。众所周知，熔融李和主体之间的物理和化学相互作用都为李注入到宿主提供了驱动力，但其中一个人扮演的主要作用尚未清楚地探索。在这项工作中，由乙醇锌（CFZO）涂覆的3D碳毡（CFZO）设计为通过热输注方法预防Li金属的可控主体。结果表明，形态学诱导的物理驱动力在热输注过程中比ZnO和熔融锂之间的化学反应发挥了更重要的作用。根据Wenzel的模型，物理驱动力源自毛细血管效应，这取决于主机的粗糙度。可以控制可调节的LI输送过程以制造具有层次结构的Li复合电极（具有致密锂层和多孔Li-inlay）。 CFZO-Li的独特结构不仅为LI沉积提供了足够的空间，而且还分散局部电流密度以诱导均匀的LI沉积行为，因此可以有效地抑制Li树枝状体。结果，CFZO-LI阳极表现出有希望的循环稳定性，当与含量的（LINI0.8CO0.15A10.05O2）和Li-Form（硫）阴极偶联时。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号