Synergistic Charge Scavenging in Pt/C‐Polyoxometalate Systems for Scalable Biomass Power Generation via Super‐Reduced Electrolytes
- 1Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea
- 2Clean Energy Research Center Korea Institute of Science and Technology (KIST) Seoul Republic of Korea
- 33rd R&D Institute Agency for Defense Development Daejeon South Korea
Abstract
Direct electrochemical conversion of unrefined biomass waste into electricity offers a sustainable pathway for decentralized energy generation, yet its practical implementation has been fundamentally hindered by low power densities and limited scalability. A fundamental bottleneck lies in the intrinsic recalcitrance of biomass, which restricts electron harvesting to shallow oxidation pathways and confines redox mediators to low reduction states. Here, we demonstrate a scalable biomass flow fuel cell (BFFC) enabled by a super‐reduced polyoxometalate (POM) electrolyte that overcomes the long‐standing electron‐harvesting ceiling. By employing a catalytic oxidative degradation strategy that promotes extensive cleavage of recalcitrant C─C linkages in the lignocellulosic matrix, we unlock deep multi‐electron reduction of POM, achieving an electron transfer capacity exceeding four electrons per molecule. As a result, the single‐cell device delivers a record‐breaking power density of 218.6 mW cm− 2. Beyond laboratory‐scale demonstrations, we constructed a 10‐cell stack prototype, producing 59.2 Wh over 15.6 h of stable operation directly from raw biomass.
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BibTeX
@article{lee2026synergistic,
title = {{Synergistic Charge Scavenging in Pt/C‐Polyoxometalate Systems for Scalable Biomass Power Generation via Super‐Reduced Electrolytes}},
author = {Hojin Lee and Hyeong‐Jin Lee and Jongseo Lee and Sang‐Soo Han and Sangjin Park and Eun Seon Cho and Hee‐Tak Kim},
journal = {Advanced Science},
year = {2026},
month = oct,
doi = {10.1002/advs.78361},
url = {https://doi.org/10.1002/advs.78361},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Synergistic Charge Scavenging in Pt/C‐Polyoxometalate Systems for Scalable Biomass Power Generation via Super‐Reduced Electrolytes
AU - Hojin Lee
AU - Hyeong‐Jin Lee
AU - Jongseo Lee
AU - Sang‐Soo Han
AU - Sangjin Park
AU - Eun Seon Cho
AU - Hee‐Tak Kim
PY - 2026
DA - 2026/10/25
JO - Advanced Science
DO - 10.1002/advs.78361
UR - https://doi.org/10.1002/advs.78361
AB - Direct electrochemical conversion of unrefined biomass waste into electricity offers a sustainable pathway for decentralized energy generation, yet its practical implementation has been fundamentally hindered by low power densities and limited scalability. A fundamental bottleneck lies in the intrinsic recalcitrance of biomass, which restricts electron harvesting to shallow oxidation pathways and confines redox mediators to low reduction states. Here, we demonstrate a scalable biomass flow fuel cell (BFFC) enabled by a super‐reduced polyoxometalate (POM) electrolyte that overcomes the long‐standing electron‐harvesting ceiling. By employing a catalytic oxidative degradation strategy that promotes extensive cleavage of recalcitrant C─C linkages in the lignocellulosic matrix, we unlock deep multi‐electron reduction of POM, achieving an electron transfer capacity exceeding four electrons per molecule. As a result, the single‐cell device delivers a record‐breaking power density of 218.6 mW cm− 2. Beyond laboratory‐scale demonstrations, we constructed a 10‐cell stack prototype, producing 59.2 Wh over 15.6 h of stable operation directly from raw biomass.
SN - 2198-3844
ER -