Nitrogen‐Doped Wrinkled Carbon Foils Derived from MOF Nanosheets for Superior Sodium Storage,Advanced Energy Materials

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Nitrogen‐Doped Wrinkled Carbon Foils Derived from MOF Nanosheets for Superior Sodium Storage
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2018-07-15 , DOI: 10.1002/aenm.201801515
Lingjun Kong ₁ , Jian Zhu ₁ , Wei Shuang ₁ , Xian-He Bu _{1,

2,

3}

Affiliation

Preparation of hierarchical carbon nanomaterials from metal−organicframeworks (MOFs) offers immense potential in the improvement of energy density, tunability, and stability of functional materials for energy storage and conversion. How interconnected nitrogen (N)‐doped wrinkled carbon foils derived from MOF nanosheets can serve as high‐performance sodium storage materials due to their multiscale porous structure is shown here. The novel N‐doped carbon nanomaterials are synthesized through the pyrolysis of 2D Mn‐based MOFs, which are produced through the assistance of monodentate ligands to enable the planar growth of MOFs. Subsequent acid etching creates hierarchical pores and channels to allow rapid ion transport. The resulting materials achieve high‐rate capability (165 and 150 mA h g⁻¹ at current densities of 8 and 10 A g⁻¹, respectively) and high stability (capacity retention 72.8% after 1000 cycling at 1.0 A g⁻¹), when they are used as anode in sodium‐ion capacitors.

中文翻译：

来自MOF纳米片的氮掺杂皱纹碳箔，具有出色的钠存储能力

从金属有机框架（MOF）制备分级碳纳米材料在提高能量密度，可调性和功能性材料用于能量存储和转换的稳定性方面具有巨大潜力。此处显示了源自MOF纳米片的相互连接的掺杂氮（N）的褶皱碳箔如何由于其多尺度的多孔结构而可以用作高性能的钠存储材料。新型的N掺杂碳纳米材料是通过2D Mn基MOF的热解合成的，MOF是通过单齿配体的协助产生的，以使MOF能够平面生长。随后的酸蚀产生分层的孔和通道，以允许快速的离子传输。所得材料可实现高速率能力（165和150 mA hg ^-1当它们在钠离子电容器中用作阳极时，它们分别在8和10 A g ^-1的电流密度下）和高稳定性（在1.0 A g ^-1下循环1000次后容量保持率72.8％）。

更新日期：2018-07-15

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