水合肼掺氮改性碳纤维电极电化学及电场响应性能

doi:10.3969/j.issn.1000-1093.2022.02.014

摘要/Abstract

摘要： 碳纤维表面氮掺杂改性可望提高其电化学性能和电场响应性能。以水合肼为氮源改性粘胶基碳纤维，制备新型海洋电场电极，并探究改性前后电极电化学性能以及电场响应性能变化。结果表明：改性碳纤维电极电化学性能以及电场响应性能显著提高；水合肼高温掺氮处理样品性能最佳，其比电容达到102.5 F/g，为空白组的18.99倍；电荷转移电阻和低频容抗显著降低；电极电位稳定性提高，能稳定响应1 mV、1 mHz低频率低强度电场信号，响应灵敏度、准确度显著提高。改性电极可用于制备高性能海洋电场传感器，提高水下电场探测能力。

关键词: 碳纤维电极, 水合肼, 氮掺杂改性, 电化学性能, 电场响应性能

Abstract: The modification on the surface of carbon fiber by nitrogen doping is expected to improve its electrochemical performance and electric field response performance. A new type of ocean electric field electrode was prepared using hydrazine hydrate as the nitrogen source to modify the viscose-based carbon fibers, and the changes in electrochemical performance and electric field response performance of electrode before and after modification were explored. The results show that the electrochemical performance and electric field response performance of the modified carbon fiber electrode are significantly improved. The high-temperature heat-treated nitrogen-doped sample after modification with hydrazine hydrate has the best performance, and its specific capacitance reaches 102.5 F/g, and is 18.99 times that of the blank group; the charge transfer resistance and the low-frequency capacitive reactance are greatly reduced respectively. The potential stability of electrode is improved, and the electrode can stably respond to 1 mV, 1 mHz low frequency and low intensity electric field signals; and its response sensitivity and accuracy are also significantly improved.The modified electrode can be used to prepare high-performance marine electric field sensors and improve the detection capability of underwater electric field.

Key words: carbonfiberelectrode, hydrazinehydrate, nitrogendopingmodification, electrochemicalperformance, electricfieldresponseperformance

中图分类号:

P734.3⁺3

孙久哲, 赵鸿浩, 韩永康, 许嘉威, 付玉彬. 水合肼掺氮改性碳纤维电极电化学及电场响应性能[J]. 兵工学报, 2022, 43(2): 363-371.

SUN Jiuzhe, ZHAO Honghao, HAN Yongkang, XU Jiawei, FU Yubin. Electrochemical and Electric Field Response Performances of Nitrogen-doped Carbon Fiber Electrode Modified with HydrazineHydrate[J]. Acta Armamentarii, 2022, 43(2): 363-371.

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