CAJ | 학술논문

以间苯二酚和甲醛为前驱体,分别采用赖氨酸或氨水共聚体系制备了两种具有分等级孔道结构的块体含氮多孔炭.采用氮气吸附/脱附,透射电子显微镜,扫描电子显微镜及元素分析技术分别对其物理和化学性质进行了表征.在三电极体系和两电极体系下,研究了其作为超级电容器电极材料的电化学行为.结果表明:这两种氮掺杂块体多孔炭具有相似的孔道结构,但电容行为明显不同.其中赖氨酸体系制备的多孔炭氮含量比较高,表现出良好的电化学行为,其质量比电容可达199F·g-1,经过1000充放电循环比电容仅有1.6%的损失.
이간분이분화갑철위전구체,분별채용뢰안산혹안수공취체계제비료량충구유분등급공도결구적괴체함담다공탄.채용담기흡부/탈부,투사전자현미경,소묘전자현미경급원소분석기술분별대기물리화화학성질진행료표정.재삼전겁체계화량전겁체계하,연구료기작위초급전용기전겁재료적전화학행위.결과표명:저량충담참잡괴체다공탄구유상사적공도결구,단전용행위명현불동.기중뢰안산체계제비적다공탄담함량비교고,표현출량호적전화학행위,기질량비전용가체199F·g-1,경과1000충방전순배비전용부유1.6%적손실.
Two nitrogen-doped carbon monoliths with hierarchical porosity over a large size range were prepared by polymerization of resorcinol and formaldehyde in the presence of an organic amine, L-lysine, and an inorganic base, ammonium hydroxide under ambient conditions. Their physical and chemical features were characterized by N2 sorption,transmission and scanning electron microscopy, and elemental analysis. Their electrochemical properties as the electrodes of supercapacitors were evaluated under both a three-electrode system and a two-electrode system. Results show that the two types of nitrogen-doped carbon possess similar pore structures, but have distinct electrochemical performances. The L-lysine incorporated carbon monolith has a high nitrogen content,a high spectific capacitance of 199F·g-1,and a 1.6% loss in the specific capacitance after 1000 charge-discharge cycles, indicating a long-term cycling stability.