Liu Bingzhi, Zhang Lili, Qi Peirong, Zhu Mingyuan, Wang Gang, Ma Yanqing, Guo Xuhong, Chen Hui, Zhang Boya, Zhao Zhuangzhi, Dai Bin, Yu Feng
Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China.
Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research, Jurong Island 627833, Singapore.
Nanomaterials (Basel). 2016 Jan 15;6(1):18. doi: 10.3390/nano6010018.
Nitrogen-doped banana peel-derived porous carbon foam (N-BPPCF) successfully prepared from banana peels is used as a binder-free electrode for supercapacitors. The N-BPPCF exhibits superior performance including high specific surface areas of 1357.6 m²/g, large pore volume of 0.77 cm³/g, suitable mesopore size distributions around 3.9 nm, and super hydrophilicity with nitrogen-containing functional groups. It can easily be brought into contact with an electrolyte to facilitate electron and ion diffusion. A comparative analysis on the electrochemical properties of BPPCF electrodes is also conducted under similar conditions. The N-BPPCF electrode offers high specific capacitance of 185.8 F/g at 5 mV/s and 210.6 F/g at 0.5 A/g in 6 M KOH aqueous electrolyte 125.5 F/g at 5 mV/s and 173.1 F/g at 0.5 A/g for the BPPCF electrode. The results indicate that the N-BPPCF is a binder-free electrode that can be used for high performance supercapacitors.
由香蕉皮成功制备的氮掺杂香蕉皮衍生多孔碳泡沫（N-BPPCF）被用作超级电容器的无粘结剂电极。N-BPPCF表现出优异的性能，包括1357.6 m²/g的高比表面积、0.77 cm³/g的大孔体积、约3.9 nm的合适中孔尺寸分布以及含氮官能团的超亲水性。它能够轻松地与电解质接触，以促进电子和离子扩散。在相似条件下还对BPPCF电极的电化学性能进行了对比分析。在6 M KOH水溶液电解质中，N-BPPCF电极在5 mV/s时具有185.8 F/g的高比电容，在0.5 A/g时为210.6 F/g；BPPCF电极在5 mV/s时为125.5 F/g，在0.5 A/g时为173.1 F/g。结果表明，N-BPPCF是一种可用于高性能超级电容器的无粘结剂电极。
