DataVXAdvanced Functional MaterialsPaper
journal article·2024-06Open access

Defect Passivation Toward Designing High‐Performance Fluorinated Polymers for Liquid–Solid Contact‐Electrification and Contact‐Electro‐Catalysis

Xiao‐Fen Li, Andy Berbille, Tian‐Yu Wang, Xin Zhao, Shunning Li, Yusen Su, Huifan Li, Guixin Zhang, Ziming Wang, Laipan Zhu, Jianbo Liu, Zhong Lin Wang

Advanced Functional Materials· Volume 34· Issue 25
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Source abstract

Abstract

Abstract Contact‐electrification at solid–liquid interfaces (SL‐CE) and contact‐electro‐catalysis (CEC) are two blooming research areas with promising applications in sustainable energy, sensing, and chemical processes. However, prior research has neglected the impact of electronic defects on the ability of high‐performance tribo‐materials, like fluorinated polymers, to perform SL‐CE/CEC. Here, through first‐principle calculations, the addition of surface functional groups to fluorinated ethylene propylene (FEP) enables the tuning of its molecular orbitals' positions, and displacing deep‐level defect states from the HOMO‐LUMO gap is shown. Thereafter, FEP films are modified accordingly by plasma etching; resulting in a significant performance improvement of up to 202% (charge) in SL‐CE experiments, and up to 398% (kinetic rate) in CEC dye degradation. This study provides a theoretical and experimental framework to design high‐performance materials for SL‐CE and CEC, and insights into their physical mechanisms and defect passivation, which are all fundamental for the advancement of these fields.
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Research context

PolymersCatalysis & surfaces

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Conducting polymers and applications · Green IT and Sustainability

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

Affiliations

CAS Center for Excellence in Nanoscience Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing 101400 China

Key Laboratory of Advanced Materials (MOE) School of Materials Science and Engineering Tsinghua University Beijing 100084 China

School of Nanoscience and Engineering University of Chinese Academy of Sciences Beijing 100049 China

State Key Laboratory of Control and Simulation of Power System and Generation Equipment Department of Electrical Engineering Tsinghua University Beijing 100084 China

School of Advanced Materials Peking University Shenzhen Graduate School Shenzhen 518055 China

Center on Nanoenergy Research School of Physical Science and Technology Guangxi University Nanning 530004 China

Yonsei Frontier Lab Yonsei University Seoul 03722 Republic of Korea

School of Materials Science and Engineering Georgia Institute of Technology Atlanta GA 30332 USA

Funding

National Natural Science Foundation of China · National Key Research and Development Program of China · Tsinghua University

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