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首页> 外文期刊>RSC Advances >Three-dimensional hierarchical ZnCo2O4@C3N4-B nanoflowers as high-performance anode materials for lithium-ion batteries
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Three-dimensional hierarchical ZnCo2O4@C3N4-B nanoflowers as high-performance anode materials for lithium-ion batteries

机译：三维等级ZnCo2O4 @ C3N4-B纳米轧辊作为锂离子电池的高性能阳极材料

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ZnCo _(2) O _(4) has become one of the most widely used anode materials due to its good specific capacity, cost-efficiency, high thermal stability and environmental benignity. However, its poor conductivity and cycle stability have limited its practical application in lithium-ion batteries. To overcome these issues, we constructed a 3D nanoflower composite material (ZnCo _(2) O _(4) @C _(3) N _(4) -B) by combining ZnCo _(2) O _(4) as a framework and B-doped g-C _(3) N _(4) (g-C _(3) N _(4) -B) as a new carbon source material via a simple hydrothermal method. ZnCo _(2) O _(4) @C _(3) N _(4) -B exhibited exceptional specific capacitance of 919.76 mA h g ~(?1) after 500 cycles at 0.2 A g ~(?1) and a long-term capacity retention of 97.8% after 1000 cycles at 2 A g ~(?1) . The high reversible capacity, long cycling life and good rate performance could be attributed to the 3D interconnected architecture and doping of g-C _(3) N _(4) -B. This work provides a simple and general strategy to design high-performance anode materials for lithium-ion batteries to meet the needs of practical applications.
机译：Znco _（2）O _（4）已成为最广泛使用的阳极材料之一，因为其具有良好的特定容量，成本效率，高热稳定性和环境良性。然而，其导电性差和循环稳定性有限于其在锂离子电池中的实际应用。为了克服这些问题，我们通过组合ZnCo _（2）O _（4）构建了一个3D纳米λo _（4）@c_（3）n _（4）-b）。框架和B掺杂GC _（3）N _（4）（GC _（3）N _（4）N _（4）-B）通过简单的水热法作为新的碳源材料。 ZnCo _（2）O _（4）@c_（3）n _（4）-b在0.2 a g〜（α1）和a的500周期后展出了919.76 mA hg〜（α1）的特殊电容。在2A G〜（α1）的1000次循环后长期容量保留为97.8％。高可逆容量，长循环寿命和良好速率性能可能归因于3D互连架构和G-C _（3）N _（4）-B的掺杂。这项工作提供了一种简单且一般的策略来设计用于锂离子电池的高性能阳极材料，以满足实际应用的需求。

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