| 硼、氮共掺杂多孔碳的制备及其超电容性能 |
| Preparation and supercapacitive properties of B, N co-doped porous carbons |
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| 摘要: 分别以含氮菲咯啉、四硼酸钾和醋酸锌为碳源、活化剂和模板， 制备了B、N共掺杂多孔碳（BN-PC），并探究模板质量对BN-PC结构和储电性能的影响。当醋酸锌质量为5 g时，所得BN-PC5中B、N杂原子含量分别为20.21%、18.29%。电化学测试结果表明，以6 mol·L-1 KOH为电解液，BN-PC5电极展现出高的比电容（在0.05 A·g-1电流密度下为255 F·g-1）、优异的倍率性能（在20 A·g-1电流密度下为188 F·g-1）和卓越的循环稳定性（在5 A·g-1的电流密度下循环10 000次比电容保持率为97%）。以3 mol·L-1 ZnSO4为电解液，在平均功率密度为56 W·kg-1时，BN-PC5电容器的能量密度可达27 Wh·kg-1。 |
| 关键词: 能量密度 共掺杂 多孔碳 电化学 超级电容器 |
| 基金项目: 国家自然科学基金（No.52072002，51872005）资助 |
| Abstract: Herein, we employed (CH3COO)2Zn as template to prepare B, N co-doped porous carbons (BN-PC) by using phenanthroline as precursor and N source, K2B4O7 as B source. The effect of template mass on the structure and electric storage properties of BN-PC5 was investigated. When the mass of (CH3COO)2Zn was 5 g, the B and N heteroatom content of BN-PC 5 was 20.21% and 18.29%, respectively. As the electrode materials for supercapacitors, BN-PC5 exhibited a high specific capacitance of 255 F·g-1 at 0.05 A·g-1, an excellent rate performance of 188 A·g-1 at 20 A·g-1 and outstanding cycle stability with 97% of initial capacitance retention after 10 000 cycles in 6 mol·L-1 KOH aqueous electrolyte. The energy density of BN-PC5 capacitor reached 27 Wh·kg-1 at an average power density of 56 W·kg-1 in 3 mol·L-1 ZnSO4 aqueous electrolyte. |
| Keywords: energy density co-doped porous carbon electrochemistry supercapacitors |
| 投稿时间：2022-09-20 修订日期：2022-11-05 |
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| 王天云,韩娜,贾德东,李宏强,何孝军.硼、氮共掺杂多孔碳的制备及其超电容性能[J].无机化学学报,2023,39(2):309-316. |
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