Periodic Reporting for period 1 - LoCatSpot (Localized catalytic hotspot detection, manipulation, and creation for Energy Innovations)
Okres sprawozdawczy: 2020-07-01 do 2022-06-30
Following the proposed work packages, the project started with electrochemical investigations (macroscopic and microscopic) of novel electrode materials such as 3D printed electrodes and the examination of the HER activity at different electrodeposited TMDs (MoS2, WS2, MoS2/WS2) by SECM.
1) C. Iffelsberger, C.W. Jellett, M. Pumera, 3D Printing Temperature Tailors Electrical and Electrochemical Properties through Changing Inner Distribution of Graphite/Polymer, Small. 17 (2021) 2101233.
2) C. Iffelsberger, S. Ng, M. Pumera, Photoelectrolysis of TiO2 is highly localized and the selectivity is affected by the light, Chem. Eng. J. 446 (2022) 136995.
3) K.A. Novčić, C. Iffelsberger, S. Ng, M. Pumera, Local electrochemical activity of transition metal dichalcogenides and their heterojunctions on 3D-printed nanocarbon surfaces, Nanoscale. 13 (2021) 5324–5332.
In the second stage, the localized electrochemical deposition of MoSx as a model catalyst material for HER was performed and its further development resulted in the electrochemical printing of microstructured, for HER highly active, MoSx with controlled chemical composition in a one-step process using the SECM.
4) C. Iffelsberger, M. Pumera, High resolution electrochemical additive manufacturing of microstructured active materials: Case study of MoSxas a catalyst for the hydrogen evolution reaction, J. Mater. Chem. A. 9 (2021) 22072–22081.
In the following the direct formation of MoSx catalyst material inside an operating flow cell directly followed by the continuous monitoring of the catalyst’s activity under operational (flow) conditions was demonstrated.
5) C. Iffelsberger, S. Wert, F.M. Matysik, M. Pumera, Catalyst Formation and in Operando Monitoring of the Electrocatalytic Activity in Flow Reactors, ACS Appl. Mater. Interfaces. 13 (2021) 35777–35784.
Exploitation and dissemination:
The results listed above have been or will be communicated to the research community via publications in journals.
The expected training and the various scientific and transferable skills to be developed were successfully achieved.
Interdisciplinary knowledge transfer from the fellow to the host resulted in several co-authored articles. Further publications are expected.
6) K.A. Novčić, C. Iffelsberger, M. Pumera, Local electrochemical activity of transition metal dichalcogenides and their heterojunctions on 3D-printed nanocarbon surfaces, Nanoscale, 2021,13, 5324-5332.
7) J. Muñoz, C. Iffelsberger, E. Redondo, M. Pumera, Design of Bimetallic 3D-printed Electrocatalysts via Galvanic Replacement to Enhance Energy Conversion Systems, Applied Catalysis B: Environmental, accepted.
8) K. Ghosh, S. Ng, C. Iffelsberger, M. Pumera, 2D MoS2/carbon/polylactic acid filament for 3D printing: Photo and electrochemical energy conversion and storage, Appl. Mater. Today. 26 (2022).
9) M. Urso, C. Iffelsberger, C.C. Mayorga-Martinez, M. Pumera, Nickel Sulfide Microrockets as Self-Propelled Energy Storage Devices to Power Electronic Circuits “On-Demand,” Small Methods. 5 (2021) 1–9.
10) S. Wert, C. Iffelsberger, K.A. Novčić, F.M. Matysik, M. Pumera, Edges are more electroactive than basal planes in synthetic bulk crystals of TiS2 and TiSe2, Appl. Mater. Today. 26 (2022).
11) C. Iffelsberger, D. Rojas, M. Pumera, Photo-Responsive Doped 3D-Printed Copper Electrodes for Water Splitting: Refractory One-Pot Doping Dramatically Enhances the Performance, J. Phys. Chem. C. (2022).
12) W. Gao, C. Iffelsberger, M. Pumera, Dual polymer engineering enables high-performance 3D printed Zn-organic battery cathodes, Appl. Mater. Today. 28 (2022) 101515.