...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Boosting the lithium storage performance of Na2Li2Ti6O14 anodes by g-C3N4 modification dagger
【24h】

Boosting the lithium storage performance of Na2Li2Ti6O14 anodes by g-C3N4 modification dagger

机译：通过G-C3N4修改匕首提高NA2LI2TI6O14阳极锂储存性能

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

Na2Li2Ti6O14 particles were prepared by a simple solid-state process, and then g-C3N4-coated Na2Li2Ti6O14 composites were constructed by a facile solution route for the first time. The g-C3N4-coated Na2Li2Ti6O14 multicomponent composites because of their unique architecture as negative materials for Li-ion batteries can be expected to exhibit a significantly improved cycling stability and reversible capacity even at high rates. g-C3N4 (5 wt%)-coated Na2Li2Ti6O14 shows a discharge (charge) capacity of 184.4 (184.3) mA h g(-1) at 500 mA g(-1) after 100 cycles, which is larger than that of pristine Na2Li2Ti6O14 with a discharge (charge) capacity of 122.8 (122.0) mA h g(-1). The use of g-C3N4 with a carbon framework containing abundant nitrogen provides more active sites and surface defects for redox reactions and Li-ion transport. The g-C3N4 coating decreases the impedance between the electrolyte and Na2Li2Ti6O14 and enhances the charge transfer, ionic conductivity and diffusion ability of Li ions of Na2Li2Ti6O14. This work offers an efficient way to design high-performance Na2Li2Ti6O14-based materials for advanced lithium ion battery, and g-C3N4 (5 wt%)-coated Na2Li2Ti6O14 shows an enormous potential as a negative material for next generation Li-ion batteries with excellent performance.
机译：采用简单的固相法制备了Na2Li2Ti6O14颗粒，并首次采用简便的溶液法制备了g-C3N4包覆的Na2Li2Ti6O14复合材料。g-C3N4包覆的Na2Li2Ti6O14多组分复合材料由于其作为锂离子电池负极材料的独特结构，即使在高速率下也有望表现出显著改善的循环稳定性和可逆容量。经过100次循环后，g-C3N4（5 wt%）包覆的Na2Li2Ti6O14在500 mA g（-1）下的放电（充电）容量为184.4（184.3）mA h g（-1），这比原始Na2Li2Ti6O14的放电（充电）容量为122.8（122.0）mA h g（-1）大。使用含有丰富氮的碳骨架的g-C3N4为氧化还原反应和锂离子传输提供了更多的活性位点和表面缺陷。g-C3N4涂层降低了电解液与Na2Li2Ti6O14之间的阻抗，增强了Na2Li2Ti6O14中锂离子的电荷转移、离子导电性和扩散能力。本研究为设计高性能的新型锂离子电池用Na2Li2Ti6O14基材料提供了一条有效途径，而g-C3N4（5 wt%）包覆的Na2Li2Ti6O14作为下一代锂离子电池负极材料具有巨大的潜力。

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