DataVXAdvanced Energy MaterialsPaper
journal article·2024-08Open access

A Hybrid Biofuel Cell with High Power and Operational Stability Using Electron Transfer‐Intensified Mediators and Multi‐Interaction Assembly

Younjun Jang, Tae‐Won Seo, Junha Pak, Moon Kyu Park, Jeongyeon Ahn, Gee Chan Jin, Seung Woo Lee, Yoon Jang Chung, Young‐Bong Choi, Cheong Hoon Kwon, Jinhan Cho

Advanced Energy Materials· Volume 14· Issue 32
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Source abstract

Abstract

Abstract Biofuel cells (BFCs) offer an eco‐friendly route to convert biochemical energy into electricity. However, their performance is hindered by insufficient enzyme immobilization as well as limited electron transfer within the enzymatic electrode. While the incorporation of redox mediators (RMs) into enzyme layers has been shown to improve BFC performance through enhanced electron transfer, progress has plateaued in the last decade. Herein, a major breakthrough is presented realized by a novel strategy that exploits electron transfer‐intensified RM layers. Metal nanoparticles covalently bridged between neighboring RMs facilitate electron transfer ubiquitously. Electron transfer characteristics are enhanced not only within the RM layers themselves, but also at the glucose oxidase (GOx)/host electrode and GOx/GOx interfaces. This leads to a remarkable performance boost in the enzymatic anode. A hybrid BFC constructed with innovative anode and Pt‐based cathode exhibits a striking combination of high power output (2.3 and 8.5 mW cm−2 at 10 and 300 mmol L−1 glucose, respectively) and exceptional operational stability (≈80% and 47% power retention after 10 days and 1 month, respectively), outperforming all previously reported BFCs by a significant margin.
Source: crossref · Quality: baseline

Research context

Energy storageNanomaterials

OpenAlex topics: Molecular Junctions and Nanostructures · Electrochemical sensors and biosensors · Quantum Dots Synthesis And Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

KU‐KIST Graduate School of Converging Science & Technology Korea University 145 Anam‐ro, Seongbuk‐gu Seoul 02841 Republic of Korea

Department of Chemistry College of Science & Technology Dankook University 119 Dandae‐ro, Dongnam‐gu Cheonan‐si Chungcheongnam‐do 31116 Republic of Korea

Department of Chemical and Biological Engineering Korea University 145 Anam‐ro, Seongbuk‐gu Seoul 02841 Republic of Korea

Department of Energy Resources and Chemical Engineering Kangwon National University 346 Jungang‐ro Samcheok 25913 Republic of Korea

The George W. Woodruff School of Mechanical Engineering Georgia Institute of Technology Atlanta GA 30332 USA

Department of Cosmedical & Materials Dankook University 119 Dandae‐ro, Dongnam‐gu Cheonan‐si Chungcheongnam‐do 31116 Republic of Korea

Soft Hybrid Materials Research Center Advanced Materials Research Division Korea Institute of Science and Technology (KIST) 5 Hwarang‐ro 14‐gil, Seongbuk‐gu Seoul 02792 Republic of Korea

Funding

National Research Foundation of Korea · KU-KIST Graduate School of Converging Science and Technology · Ministry of Education

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