Effect of heat-treatment atmosphere on the current generation of TiO2 nanotube array electrodes in microbial fuel cells
Effect of heat-treatment atmosphere on the current generation of TiO2 nanotube array electrodes in microbial fuel cells
复制标题
热处理气氛对微生物燃料电池TiO2纳米管阵列电极电流生成的影响
DOI：
10.1016/j.electacta.2017.10.068
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发表时间：
2017-12-10
影响因子：
6.6
通讯作者：
Guo, Kun
中科院分区：
文献类型：
--
作者：
Huang, Lijie;Zhang, Xueqing;Guo, Kun
研究了热处理气氛对微生物燃料电池（MFC）中钛电极电流产生的影响。在H-2（TNA-H-2）中加热的TiO 2纳米管阵列电极实现了最大电流密度（22.69 +/- 0.18 A m（-2））。钛电极表面的物理分析表明，电化学阳极氧化后比表面积增加。在H2-（81.66%）、CH 4-（74.48%）、N2-（59.67%）和O2-（44.82%）中加热的TiO 2纳米管阵列电极的堆积率与相应的电流密度呈显著正相关（P < 0.05，R-2 = 0.9469）。此外，TNA-H-2的电子转移速率常数最高（2.38 s（-1））。TNA-H-2具有大的比表面积、良好的化学稳定性、高的电子转移速率和良好的生物相容性，表明其作为MFC阳极系统具有很大的应用潜力。(C)2017由Elsevier Ltd.出版
We investigated the effects of the heat-treatment atmosphere on the current generation of Ti electrodes in microbial fuel cells (MFCs). The maximum current density was achieved for TiO2 nanotube array electrodes heated in H-2 (TNA-H-2) (22.69 +/- 0.18 A m(-2)). Physical analysis of the Ti electrode surfaces revealed that the specific surface area increased after electrochemical anodization. The crystallinities of the TiO2 nanotube array electrodes heated in H-2 (81.66%), CH4 (74.48%), N-2 (59.67%), and O-2 (44.82%) showed a significant positive correlation with the corresponding current densities (P < 0.05, R-2 = 0.9469). In addition, the highest electron transfer rate constant was achieved for TNA-H-2 (2.38 s(-1)). The large specific surface area, good chemical stability, high electron transfer rate, and good biocompatibility of TNA-H-2 suggest its great potential for application as an anode system in MFCs. (C) 2017 Published by Elsevier Ltd.