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A carbon-based material with a hierarchical structure and intrinsic heteroatom sites for sodium-ion storage with ultrahigh rate and capacity
Nanoscale ( IF 5.8 ) Pub Date : 2021-08-23 , DOI: 10.1039/d1nr04457e Xue-Yang Cui 1 , Xiao-Dong Lin 1 , Ya-Jing Wang 1 , Pan Xu 1 , Xiao-Xiang Fan 1 , Ming-Sen Zheng 1 , Jia-Jia Chen 1 , Quan-Feng Dong 1
Nanoscale ( IF 5.8 ) Pub Date : 2021-08-23 , DOI: 10.1039/d1nr04457e Xue-Yang Cui 1 , Xiao-Dong Lin 1 , Ya-Jing Wang 1 , Pan Xu 1 , Xiao-Xiang Fan 1 , Ming-Sen Zheng 1 , Jia-Jia Chen 1 , Quan-Feng Dong 1
Affiliation
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The storage of sodium ions with carbon materials has huge potential for large-scale application due to its resource-rich and environmental advantages. However, how to realize high power density, high energy density and long cycle life are the bottlenecks restricting its development. Herein, by using a facile synthesis strategy, a carbon-based framework with a hierarchical structure and intrinsic heteroatom sites which are the characteristics contributing to ultrahigh rate and capacity has been achieved. As a result, the hierarchical carbon-based material exhibits excellent performance when used as both the anode and cathode for sodium-ion capacitors (SICs), which can deliver a high energy density of 224 W h kg−1 (at 180 W kg−1), an ultrahigh power density of 17 160 W kg−1 (at 128 W h kg−1) and ultralong cycle life (91% capacity retention after 10 000 cycles at 2 A g−1), outperforming most of the previously reported SICs with other configurations.
中文翻译：
一种具有分级结构和内在杂原子位点的碳基材料，用于具有超高倍率和容量的钠离子存储
用碳材料存储钠离子由于其资源丰富和环境优势，具有巨大的大规模应用潜力。然而，如何实现高功率密度、高能量密度和长循环寿命是制约其发展的瓶颈。在此，通过使用简便的合成策略，实现了具有分级结构和内在杂原子位点的碳基框架，这些都是有助于超高倍率和容量的特征。因此，分级碳基材料在用作钠离子电容器 (SIC) 的阳极和阴极时表现出优异的性能，可提供 224 W h kg -1（在 180 W kg - 时）的高能量密度。1 ), 17 160 W kg -1的超高功率密度（在 128 W h kg -1）和超长循环寿命（在 2 A g -1 下10 000 次循环后容量保持率为 91% ），优于大多数先前报道的具有其他配置的 SIC。
更新日期：2021-09-16
中文翻译：
一种具有分级结构和内在杂原子位点的碳基材料，用于具有超高倍率和容量的钠离子存储
用碳材料存储钠离子由于其资源丰富和环境优势，具有巨大的大规模应用潜力。然而，如何实现高功率密度、高能量密度和长循环寿命是制约其发展的瓶颈。在此，通过使用简便的合成策略，实现了具有分级结构和内在杂原子位点的碳基框架，这些都是有助于超高倍率和容量的特征。因此，分级碳基材料在用作钠离子电容器 (SIC) 的阳极和阴极时表现出优异的性能，可提供 224 W h kg -1（在 180 W kg - 时）的高能量密度。1 ), 17 160 W kg -1的超高功率密度（在 128 W h kg -1）和超长循环寿命（在 2 A g -1 下10 000 次循环后容量保持率为 91% ），优于大多数先前报道的具有其他配置的 SIC。
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