TY - JOUR
T1 - Biopolymer Electrolyte Membranes (BioPEMs) for Sustainable Primary Redox Batteries
AU - Alday, Perla Patricia
AU - Barros, Sandra Cerqueira
AU - Alves, Raquel
AU - Esperança, José M. S. S.
AU - Navarro-Segarra, Marina
AU - Sabaté, Neus
AU - Silva, Maria Manuela
AU - Esquivel, Juan Pablo
N1 - SUPERCELL - GA.648518.
UID/QUI/0686/2019. UID/QUI/50006/2019.
Sem PDF conforme despacho.
PY - 2020/2/1
Y1 - 2020/2/1
N2 - The proliferation of portable electronic devices has resulted in an increase of e-waste that is generated after their use. One of the most hazardous components in e-waste are batteries, due to their content of heavy metals and toxic chemicals. Fuel cells and redox flow batteries have been recognized as more sustainable alternatives to Li-based batteries for powering portable applications. Although they provide comparable energy and power densities, they still face some challenges because they rely on proton exchange membranes based on nonenvironmentally friendly, high-priced perfluorosulfonic acid copolymers that require energy-intense manufacturing and recycling procedures. In this work, eco-friendly and sustainable biopolymer electrolyte membranes (BioPEMs) are synthesized from biopolymers like chitosan, cellulose, and starch. These BioPEMs bring forth advantages in performance, sustainability, and cost. Additionally, they present good chemical and mechanical stability, high ionic conductivity in the same order of magnitude as Nafion membranes. Two alternatives of cellulose–chitosan based BioPEMs are successfully applied into primary redox batteries using benign eco-friendly redox chemistries, delivering open circuit voltages above 0.75 V and power output up to 2.5 mW cm−2. These results demonstrate BioPEMs capability to improve biodegradable batteries in sectors requiring a transient electrical energy, such as environmental monitoring, agriculture, or packaging.
AB - The proliferation of portable electronic devices has resulted in an increase of e-waste that is generated after their use. One of the most hazardous components in e-waste are batteries, due to their content of heavy metals and toxic chemicals. Fuel cells and redox flow batteries have been recognized as more sustainable alternatives to Li-based batteries for powering portable applications. Although they provide comparable energy and power densities, they still face some challenges because they rely on proton exchange membranes based on nonenvironmentally friendly, high-priced perfluorosulfonic acid copolymers that require energy-intense manufacturing and recycling procedures. In this work, eco-friendly and sustainable biopolymer electrolyte membranes (BioPEMs) are synthesized from biopolymers like chitosan, cellulose, and starch. These BioPEMs bring forth advantages in performance, sustainability, and cost. Additionally, they present good chemical and mechanical stability, high ionic conductivity in the same order of magnitude as Nafion membranes. Two alternatives of cellulose–chitosan based BioPEMs are successfully applied into primary redox batteries using benign eco-friendly redox chemistries, delivering open circuit voltages above 0.75 V and power output up to 2.5 mW cm−2. These results demonstrate BioPEMs capability to improve biodegradable batteries in sectors requiring a transient electrical energy, such as environmental monitoring, agriculture, or packaging.
KW - biodegradable batteries
KW - biopolymer electrolyte membranes
KW - circular economy
KW - green electronics
KW - redox flow batteries
UR - http://www.scopus.com/inward/record.url?scp=85076751484&partnerID=8YFLogxK
U2 - 10.1002/adsu.201900110
DO - 10.1002/adsu.201900110
M3 - Article
AN - SCOPUS:85076751484
VL - 4
JO - ADVANCED SUSTAINABLE SYSTEMS
JF - ADVANCED SUSTAINABLE SYSTEMS
SN - 2366-7486
IS - 2
M1 - 1900110
ER -