资料摘要
资料下载采用注浆成型法制备了管状电解质支撑的固体氧化物燃料电池(SOFC), 电解质材料为YSZ, 阳极和阴 极材料都采用银. 将活性炭不加任何气体直接用作电池的燃料. 电池的有效面积为2.5 cm2, 在800 益时给出最大 功率为16 mW, 其开路电压随温度的变化与理论结果一致. 此电池在30 mA 的恒电流下连续稳定运行了37 h, 通过电化学反应消耗了加入电池中碳燃料的42%(w), 证明了电池的工作是可以自维持的. 与使用石墨燃料的 SOFC 相比, 此电池的运行稳定性得到了明显的提高, 因为活性炭比石墨具有大得多的微孔率和表面积. 电池运 行37 h 后很快衰减, 燃料烧结和燃料量减少造成碳表面积减小可能是衰减的主要原因. 电化学阻抗谱测试结果 表明电池的极化电阻在电池的总损耗中占主导. 通过对电池反应机理进行分析, 认为发生在阳极/电解质界面的 CO 电化学氧化反应和发生在碳燃料表面的Boudouard 反应构成的循环维持了电池的运行, 因此通过添加促进上述两个反应的催化剂, 可提高电池的性能.
染料敏化太阳能电池DSSC
简介:Investigation on photovolatic performance of hollow sphere/nanoparticle composite TiO2 electrodes for solid state dye sensitized solar cells. Dynamic Response of Charge Transfer and Recombination at Various Electrodes in Dye-sensitized Solar Cells Investigated Using Intensity Modulated Photocurrent and Photovoltage Spectroscopy.
锂离子电池电解质
简介:Nature SR-JLU-Integrated Solid-Nanoporous Copper-Oxide Hybrid Bulk Electrodes for High-performance Lithium-Ion Batteries
阻抗文献7
简介:Performance of non-porous graphite and titanium-based anodes in microbial fuel cells
阻抗文献6
简介:Influence of CO2 on ionic conductivity of anion exchange membrane for alkaline DMFCs
阻抗文献5燃料电池
简介:Electrochemical impedance spectroscopy (EIS) is in potential a powerful tool for the in depth analysis of microbial fuels cells (MFCs). To prevent the risk of drawing false conclusions from invalid EIS measurements we investigated the feasibility of this method on an MFC by checking: linearity, causality, stability and finiteness. EIS application under steady state conditions was partly feasible. For further application EIS on MFCs we recommend to: (1) use the constant anode or cathode potential measurement mode with a fast couple at the counter electrode; (2) record the polarization curve and measure at different amplitudes to check the linearity condition; (3) perform preliminary measurements to reveal measurement presets; (4) apply prolonged pretreatment to facilitate the stability criterion; (5) perform duplicate measurements to examine the stability; (6) use a broad frequency range to validate the finiteness criterion; (7) use a statistical based validation check based on the Kramers-Kronig transformation.
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