CAJ | 학술논문

以硫酸亚铁铵为铁源和氮源，利用水热反应和冷冻干燥法制备了铁／氮掺杂的介孔还原氧化石墨烯气凝胶（FNGA）。采用扫描电镜（SEM）、X射线衍射仪（XRD）、比表面分析仪对材料结构进行表征；采用循环伏安法和交流阻抗法对其电化学性能进行研究。结果表明，与直接水热还原得到的石墨烯气凝胶相比较，铁／氮掺杂的石墨烯气凝胶不仅具有孔径在10～20μm之间的三维多孔结构，而且还具有10nm以下的介孔结构并且具有较高的比表面积，当其作为电极材料时可以为电解液中的小分子氧化还原反应提供更多反应位点，将其作为阳极材料应用于希瓦氏菌微生物燃料电池中后，显著提高了电池的放电功率密度与电流密度，电池的最大功率密度可达到109．4W／m2。为开发低成本高效的微生物燃料电极阳极材料提供了新的思路。
이류산아철안위철원화담원，이용수열반응화냉동간조법제비료철／담참잡적개공환원양화석묵희기응효（FNGA）。채용소묘전경（SEM）、X사선연사의（XRD）、비표면분석의대재료결구진행표정；채용순배복안법화교류조항법대기전화학성능진행연구。결과표명，여직접수열환원득도적석묵희기응효상비교，철／담참잡적석묵희기응효불부구유공경재10～20μm지간적삼유다공결구，이차환구유10nm이하적개공결구병차구유교고적비표면적，당기작위전겁재료시가이위전해액중적소분자양화환원반응제공경다반응위점，장기작위양겁재료응용우희와씨균미생물연료전지중후，현저제고료전지적방전공솔밀도여전류밀도，전지적최대공솔밀도가체도109．4W／m2。위개발저성본고효적미생물연료전겁양겁재료제공료신적사로。
Reduced graphene oxide (rGO) aerogel with three dimensional porous structure and highly biocom‐patibility is a kind promising electrode materials for fuel cells and super capacitors .The most often used method for rGO aerogel preparation are hydrothermal reduction but the raw product always possess hydrophobic surface that can’t accessed by electrolyte as well as the bacteria cells in microbial fuel cells (MFCs) .In this work ,an i‐ron decorated rGO with hierarchical porous structure was developed via freeze‐drying assisted hydrothermal method .The ferrous and nitrogen doped rGO aerogel (FNGA) with optimized ratio was developed for MFC an‐ode with ferrous ammonium sulfate as the Fe/N source .The FNGA possesses three dimensional hierarchical porous structure with mesopores ,high specific surface area and hydrophilic surface ,which deliver high redox peak current and lowest interfacial charge transfer resistance .When it is used in Shewanella putrefaciens MFC anode ,the MFC achieves maximum power density of 10 .94 W/m2 ,which is 1 .8 fold higher than GA anode . This work will provide a new strategy for developing high performance MFC anode materials .