| 再生纤维素与氧化还原石墨烯复合薄膜在湿气发电与镁空气电池协同发电上的应用 | |
| Application of regenerated cellulose and reduced graphene oxide film in synergistic power generation from moisture electricity generation and Mg-air batteries | |
| 摘要: 设计了一种绿色的再生废纸纤维素(RCewp)与氧化还原石墨烯(rGO)复合的薄膜(RCewp/rGO)并将其作为活性材料，其在7 000 s的循环中稳定输出的最大峰值电流为10 μA，且在100 Ω负载下的输出功率最高可达2.34 μW·cm-2。同时，研究表明金属集流体对湿气发电的影响显著，其中不锈钢集流体在70%的相对湿度(RH)条件下，产生的开路电压最大可达53 mV，因为集流体的氧化还原反应在湿气作用下增强了电流和电压的输出。此外，该湿气发电薄膜与镁空气电池结合时表现出优异的性能：在50%RH下，RCewp/rGO电极能够产生高达1.37 V的开路电压(Voc)和0.132 mA·cm-2的短路电流密度；当RH升高至90%时，开路电压进一步增大至 1.57 V，短路电流密度达到 64.2 mA·cm-2。而对于未与湿气发电薄膜相连的 Mg-滤纸-Ni电极，其输出功率和短路电流密度仅为3.76×10-4 mW和0.306 μA·cm-2。 | |
| 关键词: 湿气发电|镁空气电池|协同发电|再生纤维素 | |
| 基金项目: 湖州市自然科学基金(No.2023YZ44)和2024年国家级大学生创新训练计划项目(No.202310347046)资助。 | |
| Abstract: A green composite film (RCewp/rGO) made from regenerated waste paper cellulose (RCewp) and reduced graphene oxide (rGO) was designed and used as an active material. The film produced from recycled paper demonstrated a stable maximum peak current of 10 μA over a 7 000 s cycle, with a maximum output power of 2.34 μW·cm-2 at a 100 Ω load. Additionally, the research highlighted the significant impact of metallic current collectors on moisture electricity generation. Notably, stainless steel collectors can produce an open-circuit voltage of up to 53 mV at 70% relative humidity (RH), as the redox reactions at the collector enhance current and voltage output under humid conditions. Furthermore, this moisture electricity generation film exhibited excellent performance when combined with magnesium-air batteries: at a 50% of RH, the RCewp/rGO electrode could generate an open-circuit voltage (Voc) of up to 1.37 V and a short-circuit current density of 0.132 mA·cm-2. When the RH increased to 90%, the Voc further rose to 1.57 V, with a short-circuit current density of 64.2 mA·cm-2. In contrast, the Mg-filter paper-Ni electrode, which was not connected to the moisture electricity generation film, only produced an output power and short-circuit current of 3.76×10-4 mW and 0.306 μA·cm-2, respectively. | |
| Keywords: moisture electricity generation|Mg-air batteries|synergistic power generation|regenerated cellulose | |
| 投稿时间：2024-05-30 修订日期：2025-04-11 | |
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