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Title: Metallization of 3D Printed Polymers and Their Application as a Fully Functional Water-Splitting System
Authors: Su, X
Li, X
Ong, C.Y.A 
Herng, T.S 
Wang, Y 
Peng, E 
Ding, J 
Keywords: Corrosion resistance
Electroless plating
Flexible structures
Iron compounds
Nickel coatings
Potassium hydroxide
3-D printing
Catalytic electrodes
Effective conductivity
Polymer metallization
Polymeric meshes
Polymeric structures
Resistance properties
Water splitting
3D printers
Issue Date: 2019
Citation: Su, X, Li, X, Ong, C.Y.A, Herng, T.S, Wang, Y, Peng, E, Ding, J (2019). Metallization of 3D Printed Polymers and Their Application as a Fully Functional Water-Splitting System. Advanced Science 6 (6) : 1801670. ScholarBank@NUS Repository.
Abstract: In this work, the plating of high-quality amorphous nickel–phosphorous coating with low resistivity of 0.45 µΩ m (298 K) on complex 3D printed polymeric structures with high uniformity is reported. Such a polymer metallization results in an effective conductivity of 4.7 × 10 4 S m −1 . This process also allows flexible structures to maintain their flexibility along with the conductivity. Octet-truss structures with nickel–iron-(oxo) hydroxide nanosheets electrodeposited onto further displays excellent water-splitting performance as catalytic electrodes, i.e., in KOH (1 m, aq), a low oxygen evolution reaction (OER) overpotential of 197 mV at 10 mA cm −2 and Tafel slope of 51 mV dec −1 . Using this light-weight electrode with high specific area, strength, and corrosion resistance properties, a fully functional water-splitting system is designed and fabricated through the concentric integration of 3D printed components. A dense polymeric mesh implemented is also demonstrated as an effective separator of hydrogen and oxygen bubbles in this system. © 2018 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Source Title: Advanced Science
ISSN: 2198-3844
DOI: 10.1002/advs.201801670
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