Yang Na, Ren Yueping, Li Xiufen, Wang Xinhua
Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, Jiangsu, China.
Nanomaterials (Basel). 2016 Sep 15;6(9):174. doi: 10.3390/nano6090174.
The inferior hydrophilicity of graphene is an adverse factor to the performance of the graphene modified anodes (G anodes) in microbial fuel cells (MFCs). In this paper, different amounts of hydrophilic graphene oxide (GO) were doped into the modification layers to elevate the hydrophilicity of the G anodes so as to further improve their performance. Increasing the GO doped ratio from 0.15 mg·mg to 0.2 mg·mg and 0.25 mg·mg, the static water contact angle () of the G-GO anodes decreased from 74.2 ± 0.52° to 64.6 ± 2.75° and 41.7 ± 3.69°, respectively. The G-GO anode with GO doped ratio of 0.2 mg·mg exhibited the optimal performance and the maximum power density () of the corresponding MFC was 1100.18 mW·m, 1.51 times higher than that of the MFC with the G anode.
石墨烯较差的亲水性是微生物燃料电池（MFC）中石墨烯修饰阳极（G阳极）性能的不利因素。本文将不同量的亲水性氧化石墨烯（GO）掺杂到修饰层中，以提高G阳极的亲水性，从而进一步改善其性能。将GO掺杂比例从0.15 mg·mg提高到0.2 mg·mg和0.25 mg·mg时，G-GO阳极的静态水接触角（）分别从74.2±0.52°降至64.6±2.75°和41.7±3.69°。GO掺杂比例为0.2 mg·mg的G-GO阳极表现出最佳性能，相应MFC的最大功率密度（）为1100.18 mW·m，比使用G阳极的MFC高1.51倍。
