3D nitrogen-doped framework carbon for high-performance potassium ion hybrid capacitor
3D nitrogen-doped framework carbon for high-performance potassium ion hybrid capacitor
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用于高性能钾离子混合电容器的3D氮掺杂骨架碳
DOI：
10.1016/j.ensm.2019.04.008
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发表时间：
2019-12
影响因子：
20.4
通讯作者：
Yan Xingbin
中科院分区：
文献类型：
--
作者：
Yang Bingjun;Chen Jiangtao;Liu Lingyang;Ma Pengjun;Liu Bao;Lang Junwei;Tang Yu;Yan Xingbin
后锂离子混合电容器具有能量/功率密度高、资源丰富、成本低等优点，在中、大规模储能领域具有巨大的应用潜力。本文报道了一种基于单一前驱体乙二胺四乙酸四钠(EDTA-4Na)的两种碳电极材料的高性能双碳钾离子混合电容器(PIHC)。通过一种简单的焙烧方法，EDTA-4Na可以直接转化为三维(3D)氮掺杂骨架碳(3DNFC)，它具有高的可逆容量和良好的电化学反应动力学性能。这种3DNFC可以进一步转化为具有超高比表面积(3839 m2g−1)和优异电容性能的3D氮掺杂骨架活性碳(3DNFAC)。以3DNFC为电池型负极，3DNFAC为电容器型正极，制成了双碳PIHC，能够在0-4.2 V下正常工作，具有高的能量和功率密度(163.5 WH kg−1在210 W kg−1下，76.4 WH kg−1在21 000 W kg−1下)，并具有出色的循环稳定性(在2.0 A g−1下10 000次循环后容量保持率为91.7%)，这些都是最先进的PIHC的最好值。
Post-lithium ion hybrid capacitors have great potential to serve as mid-to large-scale energy storage applications because of their high energy/power densities, abundant resources and low cost. Here we report a high-performance dual-carbon potassium ion hybrid capacitor (PIHC) based on two carbon electrode materials derived from a single precursor–ethylene diamine tetraacetic acid tetrasodium (EDTA-4Na). By means of a simple calcination, the EDTA-4Na can be directly converted to a three-dimensional (3D) nitrogen-doped framework carbon (3DNFC) that exhibits high reversible capacity and good electrochemical kinetic property for potassium ion storage. Such 3DNFC can be further converted to a 3D nitrogen-doped framework activated carbon (3DNFAC) that shows ultrahigh specific surface area (3839 m2g−1) and excellent capacitance performance. Using the 3DNFC as battery-type anode and the 3DNFAC as capacitor-type cathode, a dual-carbon PIHC is fabricated, and it is able to normally work at 0–4.2 V, delivers high energy and power densities (163.5 Wh kg−1at 210 W kg−1, and 76.4 Wh kg−1at 21 000 W kg−1), and exhibits outstanding cycling stability (91.7% capacity retention after 10 000 cycles at 2.0 A g−1), which are all the best values for the state-of-the-art PIHCs.
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影响因子：
32.5
作者：
Hall, Peter J.;Mirzaeian, Mojtaba;Carter, Rebecca
通讯作者：
Carter, Rebecca
影响因子：
17.6
作者：
Ding, Jia;Li, Zhi;Mitlin, David
通讯作者：
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影响因子：
13.3
作者：
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F. Yu;Zaichun Liu;Renwu Zhou;Deming Tan;Hongxia Wang;Faxing Wang
影响因子：
22
作者：
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通讯作者：
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影响因子：
9.5
作者：
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通讯作者：
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