Simple Fabrication of High-Efficiency N,O,F,P-Containing Electrodes through Host–Guest Doping for High-Performance Supercapacitors,ACS Sustainable Chemistry & Engineering

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Simple Fabrication of High-Efficiency N,O,F,P-Containing Electrodes through Host–Guest Doping for High-Performance Supercapacitors
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2018-10-16 00:00:00 , DOI: 10.1021/acssuschemeng.8b04331
Fangyuan Hu ₁ , Tianpeng Zhang ₁ , Jinyan Wang ₂ , Cheng Liu ₂ , Shengming Li ₃ , Shui Hu ₁ , Xigao Jian _{1,

2}

Affiliation

N,O-containing micropore heteroatom carbon frameworks ([email protected]) were synthesized by ionothermal synthesis approach using 4,4′-(4-oxophthalazine-1,3(4H)-diyl)dibenzonitrile. (CH₃CH₂CH₂CH₂)₄N⁺(PF₆)⁻ was then introduced into the hierarchical pore structure with pore size ranging from 0.3 to 5.8 nm by simple and high-efficiency host–guest interaction to obtain an electrode material ([email protected]) rich in N (6.15 wt %), O (8.22 wt %), P (1.61 wt %), and F (5.86 wt %). After introduction of F and P, the prepared [email protected] showed a voltage window (1.4 V) larger than the theoretical potential of water (1.23 V). [email protected] exhibited a high specific capacitance of 244.8 F g^–1 at 0.1 A g^–1 and an excellent cycling stability (capacitance retention of 98.5% over 10 000 cycles) in a three-electrode system at a high voltage window (1.4 V) because of the stable existence of P and F. In particular, compared to the [email protected], R_Ω decreased from 1.68 to 0.318 Ω and R_ct changed from 25 to 4.2 Ω in the high-frequency area of the [email protected] Moreover, the introduction of phosphorus and fluorine increased the voltage window, resulting in energy density from 3.78 to 8.1 W h kg^–1 at 1 A g^–1 and the maximum power density of 3500 W kg^–1 at 10 A g^–1 with 1 M H₂SO₄ as the electrolyte in Swagelok cells. Therefore, the proposed method was a practical and excellent strategy for synthesizing heteroatom-rich carbon materials and significantly increased energy density for energy-storage/conversion applications.

中文翻译：

通过主机-客体掺杂为高性能超级电容器简单地制备含N，O，F，P的高效电极

采用4,4'-（4-氧邻酞嗪-1,3（4 H）-二基）二苯甲腈，通过离子热合成法合成了含N，O的微孔杂原子碳骨架（[受电子邮件保护]）。（CH ₃ CH ₂ CH ₂ CH ₂）₄ N ⁺（PF ₆）^-然后通过简单高效的宿主-客体相互作用将其引入孔径范围为0.3至5.8 nm的分级孔隙结构中，以获得富含N（6.15 wt％），O（8.22）的电极材料（[电子邮件保护]）重量％），P（1.61重量％）和F（5.86重量％）。引入F和P后，制得的[受电子邮件保护]显示的电压窗口（1.4 V）大于理论水的电势（1.23 V）。[受电子邮件保护]在高电压窗口（1.4下）的三电极系统中，在0.1 A g ^–1时显示出244.8 F g ^–1的高比电容，并具有出色的循环稳定性（在10 000次循环中电容保持率98.5％）。 V），因为存在稳定的P和F.特别的，相对于[电子邮件保护]，的ř _Ω在[电子邮件保护]的高频区域中，Rct从1.68下降到0.318Ω，R _ct从25变为4.2Ω。此外，磷和氟的引入增加了电压窗口，导致能量密度从3.78到8.1 W h kg ^–1在1 A g ^–1时，最大功率密度为3500 W kg ^–1在10 A g ^–1时，世伟洛克电池中的电解质为1 MH ₂ SO ₄。因此，所提出的方法是用于合成富含杂原子的碳材料并显着提高能量密度以用于储能/转化应用的实用且优良的策略。

更新日期：2018-10-16

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