Freestanding interconnected nanocluster textiles for efficient oxygen evolution reaction

Literature Information

Publication Date 2020-09-24
DOI 10.1039/D0TA07707K
Impact Factor 12.732
Authors

Shougo Higashi, Takashi Tachikawa, Keiichiro Oh-ishi, Keisuke Shigetoh, Kensuke Takechi, Atsushi Beniya


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Abstract

Nanocatalysts have high surface area-to-volume ratios, which are beneficial for minimizing material usage and achieving high catalytic activity. However, preparing a catalyst layer that consists of nanoparticles, involves several costly steps and requires a well-controlled and safe production line. Herein, we report the fabrication of a free-standing support-free textile catalyst comprised of randomly oriented rutile IrO2 crystalline clusters with diameters in the range 1–3 nm, which are connected through dense crystalline domain boundaries. This textile catalyst can be prepared by combining two industrially established techniques, sputtering and electrospinning, which neither require an environmentally controlled costly synthesis, cleaning, and customized collecting processes for nanomaterials, nor highly engineered transferring processes to prepare the catalyst layer. By tuning the curvature of templated water-soluble polymer nanofibers, the highest mass activity and turnover frequency of the oxygen evolution reaction (OER) were achieved for non-doped or pure IrO2. The high OER activity was attributed to the presence of thermodynamically unstable surfaces, which hold large numbers of undercoordinated Ir atoms.

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Source Journal

Journal of Materials Chemistry A

Journal of Materials Chemistry A
CiteScore: 19.5
Self-citation Rate: 4.7%
Articles per Year: 2211

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment

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