• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemistry: A European journal >Hierarchical Porous ZnMn2O4 Hollow Nanotubes with Enhanced Lithium Storage toward Lithium-Ion Batteries
【24h】

Hierarchical Porous ZnMn2O4 Hollow Nanotubes with Enhanced Lithium Storage toward Lithium-Ion Batteries

机译：锂离子电池对锂的储存增强的层状多孔ZnMn2O4空心纳米管

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

We have purposefully developed a smart template-engaged methodology to efficiently fabricate well-defined ternary spinel ZnMn2O4 hollow nanotubes (NTs). The procedure involves coating carbon nanotubes (CNTs) with ZnMn2O4 nanosheets (NSs), followed by heating at high temperature in air to oxidize the CNT template. Physicochemical characterization demonstrated that the formed ZnMn2O4 NTs with a diameter of approximately 100nm were composed of assembled NSs and/or nanoparticles (NPs) as building blocks and possessed numerous nanopores of several nanometers in the sidewall of the NTs. In favor of the intrinsic structural advantages, the resulting ZnMn2O4 NTs exhibited superior electrochemical lithium-storage performance with a large capacity, good rate behavior, and excellent cyclability when evaluated as promising anodes for lithium-ion batteries (LIBs). The remarkable electrochemical performance was rationally ascribed to the appealing one-dimensional (1D) porous hollow tubular architecture with nanoscale subunits and mesopores in the sidewalls, which decreased the diffusion length for the Li+ ions, improved the kinetic process, and enhanced the structural integrity with sufficient void space to tolerate the volume variation during Li+-ion insertion/extraction. These results highlight the promising application of 1D ZnMn2O4 NTs as anodes for high-performance LIBs.
机译：我们有目的地开发了一种智能模板参与方法，可以有效地制造定义明确的三元尖晶石ZnMn2O4中空纳米管（NTs）。该过程涉及用ZnMn2O4纳米片（NSs）涂覆碳纳米管（CNT），然后在空气中高温加热以氧化CNT模板。物理化学特征表明，形成的直径约100nm的ZnMn2O4 NTs由组装的NSs和/或纳米颗粒（NPs）组成，并在NTs的侧壁上具有数纳米的许多纳米孔。有利于固有的结构优势，当被评估为锂离子电池（LIB）的有希望的负极时，所得的ZnMn2O4 NTs具有优异的电化学锂存储性能，具有大容量，良好的倍率性能和出色的循环性。出色的电化学性能被合理地归因于具有吸引力的一维（1D）多孔空心管状结构，其侧壁具有纳米级亚基和中孔，从而减少了Li +离子的扩散长度，改善了动力学过程并增强了结构完整性。足够的空隙空间以容忍Li +离子插入/提取过程中的体积变化。这些结果凸显了将一维ZnMn2O4 NTs用作高性能LIB阳极的有希望的应用。

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