Chung, Dong Young Kim, Hyoung-il Chung, Young-Hoon Lee, Myeong Jae Yoo, Sung Jong Bokare, Alok D. Choi, Wonyong Sung, Yung-Eun 2024-01-20T08:03:54Z 2024-01-20T08:03:54Z 2021-09-05 2014-12-12 2045-2322 https://pubs.kist.re.kr/handle/201004/125995 We propose a method to enhance the fuel cell efficiency with the simultaneous removal of toxic heavy metal ions. Carbon monoxide (CO), an intermediate of methanol oxidation that is primarily responsible for Pt catalyst deactivation, can be used as an in-situ reducing agent for hexavalent chromium (Cr (VI)) with reactivating the CO-poisoned Pt catalyst. Using electro-oxidation measurements, the oxidation of adsorbed CO molecules coupled with the concurrent conversion of Cr (VI) to Cr (III) was confirmed. This concept was also successfully applied to a methanol fuel cell to enhance its performance efficiency and to remove toxic Cr (VI) at the same time. English NATURE PUBLISHING GROUP METHANOL ELECTROOXIDATION OXIDATION SULFUR ELECTROCATALYSIS CHEMISTRY SIZE Inhibition of CO poisoning on Pt catalyst coupled with the reduction of toxic hexavalent chromium in a dual-functional fuel cell Article 10.1038/srep07450 1 SCIENTIFIC REPORTS, v.4 SCIENTIFIC REPORTS 4 scie scopus 000346300500003 2-s2.0-84946605510 Multidisciplinary Sciences Science & Technology - Other Topics Article METHANOL ELECTROOXIDATION OXIDATION SULFUR ELECTROCATALYSIS CHEMISTRY SIZE Carbon monoxide Pt catalyst dual-functional fuel cell hexavalent chromium