微生物燃料电池
能量收集
可再生能源
电气工程
电容器
超级电容器
功率(物理)
传输(电信)
汽车工程
航程(航空)
环境科学
能量(信号处理)
计算机科学
电压
发电
电容
工程类
化学
电极
物理
航空航天工程
量子力学
物理化学
作者
Takahiro Yamashita,Teppei Hayashi,Hirofumi Iwasaki,Masao Awatsu,Hiroshi Yokoyama
标识
DOI:10.1016/j.jpowsour.2019.04.120
摘要
Microbial fuel cells (MFCs) are attracting considerable attention because they can produce renewable energy from organic matter. To extract useable energy from MFCs, a suitable energy harvester is needed that can store energy in a capacitor and increase the output voltage of the MFC. We present an ultra-low-power energy harvester specially designed for MFCs (UPEM) which can extract energy even from extremely low-power, inexpensive, and single MFCs. The minimum required input power from an MFC to UPEM for charging a supercapacitor to 3.3 V is only 2.09 μW, and this value is two orders of magnitude lower than any input power reported for any energy harvester till date. UPEM is the first harvester that succeeded in obtaining almost real-time measurements of temperature and humidity, CO2 sensing, iBeacon™ transmission, and long-range wireless data transmission (>5 km) with a LoRa module at intervals shorter than 3 h, using a single MFC with a maximum power of 0.52 mW. These results show that UPEM can enable the realization of various applications of MFCs, such as their use in MFC-driven autonomous environmental sensing devices to measure greenhouse gases in remote off-grid locations.
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