{"id":112499,"date":"2022-07-14T07:13:00","date_gmt":"2022-07-14T05:13:00","guid":{"rendered":"https:\/\/renewable-carbon.eu\/news\/?p=112499"},"modified":"2022-07-11T12:19:53","modified_gmt":"2022-07-11T10:19:53","slug":"new-biobatteries-use-bacterial-interactions-to-generate-power-for-weeks","status":"publish","type":"post","link":"https:\/\/renewable-carbon.eu\/news\/new-biobatteries-use-bacterial-interactions-to-generate-power-for-weeks\/","title":{"rendered":"New biobatteries use bacterial interactions to generate power for weeks"},"content":{"rendered":"\n\n\n
\"Professor
Professor Seokheun \u201cSean\u201d Choi’s new \u201cplug-and-play\u201d biobattery that lasts for weeks at a time and can be stacked to improve output voltage and current. \u00a9<\/strong> Binghamton University<\/figcaption><\/figure><\/div>\n\n\n\n

As our tech needs grow and the Internet of Things increasingly connects our devices and sensors together, figuring out how to provide power in remote locations has become an expanding field of research.<\/strong><\/p>\n\n\n\n

Professor Seokheun \u201cSean\u201d Choi<\/a> \u2014 a faculty member in the Department of Electrical and Computer Engineering<\/a> at Binghamton University\u2019s Thomas J. Watson College of Engineering and Applied Science<\/a> \u2014 has been working for years on biobatteries, which generate electricity through bacterial interaction.<\/p>\n\n\n\n

One problem he encountered: The batteries had a lifespan limited to a few hours. That could be useful in some scenarios but not for any kind of long-term monitoring in remote locations.<\/p>\n\n\n\n

In a new study<\/a>, published in the Journal of Power Sources<\/em> and supported by a $510,000 grant from the Office of Naval Research, Choi and his collaborators have developed a \u201cplug-and-play\u201d biobattery that lasts for weeks at a time and can be stacked to improve output voltage and current. Co-authors on the research are from Choi\u2019s Bioelectronics and Microsystems Lab: current PhD student Anwar Elhadad, and Lin Liu, PhD \u201920 (now an assistant professor at Seattle Pacific University).<\/p>\n\n\n\n

Choi\u2019s previous batteries had two bacteria that interacted to generate the power needed<\/a>, but this new iteration uses three bacteria in separate vertical chambers: \u201cA photosynthetic bacteria generates organic food that will be used as a nutrient for the other bacterial cells beneath. At the bottom is the electricity-producing bacteria, and the middle bacteria will generate some chemicals to improve the electron transfer.\u201d<\/p><\/blockquote>\n\n\n\n

\"Professor
Professor Seokheun \u201cSean\u201d Choi \u00a9<\/strong> Binghamton University<\/figcaption><\/figure><\/div>\n\n\n\n

The most challenging application for the Internet of Things, Choi believes, will be wireless sensor networks deployed unattended in remote and harsh environments. These sensors will be far from an electric grid and difficult to reach to replace traditional batteries once they run down. Because those networks will allow every corner of the world to be connected, power autonomy is the most critical requirement.<\/p>\n\n\n\n

\u201cRight now, we are at 5G, and within the next 10 years I believe it will be 6G,\u201d he said. \u201cWith artificial intelligence, we are going to have an enormous number of smart, standalone, always-on devices on extremely small platforms. How do you power these miniaturized devices? The most challenging applications will be the devices deployed in unattended environments. We cannot go there to replace the batteries, so we need miniaturized energy harvesters\u201d<\/p><\/blockquote>\n\n\n\n

Choi compares these new biobatteries \u2014 which measure 3 centimeters by 3 centimeters square \u2014 to Lego bricks that can be combined and reconfigured in a variety of ways depending on the electrical output that a sensor or device needs.<\/p>\n\n\n\n

Among the improvements he hopes to achieve through further research is creating a package that can float on water and perform self-healing to automatically repair damage incurred in harsh environments.<\/p>\n\n\n\n

\u201cMy ultimate target is to make it really small,\u201d he said. \u201cWe call this \u2018smart dust,\u2019 and a couple of bacterial cells can generate power that will be enough to operate it. Then we can sprinkle it around where we need to.\u201d<\/p>

<\/p><\/blockquote>\n\n\n\n

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