Kalkus, Trevor J. Guha, Anirvan Scholten, Philip B. V. Nagornii, Dimitrii Coskun, Ali Ianiro, Alessandro Mayer, Michael 2021-05-28 As wearable technologies redefine the way people exchange information, receive entertainment, and monitor health, the development of sustainable power sources that capture energy from the user's everyday activities garners increasing interest. Electric fishes, such as the electric eel and the torpedo ray, provide inspiration for such a power source with their ability to generate massive discharges of electricity solely from the metabolic processes within their bodies. Inspired by their example, the device presented in this work harnesses electric power from ion gradients established by capturing the carbon dioxide (CO2) from human breath. Upon localized exposure to CO2, this novel adaptation of reverse electrodialysis chemically generates ion gradients from a single initial solution uniformly distributed throughout the device instead of requiring the active circulation of two different external solutions. A thorough analysis of the relationship between electrical output and the concentration of carbon capture agent (monoethanolamine, MEA), the amount of CO2 captured, and the device geometry informs device design. The prototype device presented here harvests enough energy from a breath-generated ion gradient to power small electronic devices, such as a light-emitting diode (LED). application/pdf https://folia.unifr.ch/global/documents/309436 https://folia.unifr.ch/documents/309436/files/kalkus_et_al_2021_green.pdf https://folia.unifr.ch/documents/309436/files/kalkus_et_al_2021_green_supp.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1002/advs.202100995 info:eu-repo/semantics/openAccess License undefined Advanced Science. - 2021, p. 2100995 breath carbon capture monoethanolamine reverse electrodialysis info:eu-repo/classification/udc/60 The Green Lean Amine Machine : Harvesting Electric Power While Capturing Carbon Dioxide from Breath http://purl.org/coar/resource_type/c_6501