Many of the material related research  involve a change in material chemistry. This may employ the so-called Edisonian approach of testing one or several material composition at a time. This approach  is not altogether productive. Instead, we adopt  combinatorial search methodology  where we produce “material library” made up of thin/thick film samples  covering  a wide compositional range.  The library was produced via a special sputter deposition unit employing four sputter targets, three peripherial in 2 inch diameter and one central in 3 inches in diameter. Depending on the application we make use of either two or three or four sputter targets.

The material library in the form of thin/thick films are then screened with an accelerated method to identify the compositional field  best suited for the purpose.  If needed  we may explore the chosen  field  further by refocusing onto the selected area. Finally the selected composition is subjected to a full tests to verify the performance

We have so far applied this method to develop
i) Membranes for hydrogen separation
ii) Catalysts for ORR in IT-SOFCs and
iii) Cathodes for Zn-MnO2 batteries for improved capacity and rechargeability

Catalysts for ORR in IT-SOFCs

Geometry of combinatorial deposition using two sputter targets

Variation of Area Specific Resistance (ASR) as a function of cathode compositions. (La,Sr)CoO3-(La,Sr)2CoO4 determined via combinatorial screening

Refocusing of (La,Sr)CoO3-(La,Sr)2CoO4 from 0.35 up to 0.65. Note that ASR has its lowest value at (La,Sr)CoO3- 0.45 (La,Sr)2CoO4

Hydrogen Separation Membrane

Geometry of combinatorial deposition using three sputter targets

Distribution of thin film membranes in ternary diagram.

Map of reactivity index in the ternary diagram. Red area covers membranes with high hydrogen solubility

Cathode screening for Zn-MnO2 batteries

Geometry of combinatorial deposition using four sputter targets

Favourable cathode compositions in alkaline batteries determined via combinatorial screeening of Bi and Ni doped NaMnOx

Favourable cathode compositions in mildly acidic batteries determined via combinatorial screeing of Bi and Ni deoped NaMnOx

Write/contact us to find out how we can intergrate such a module into your research. We can help you as a project partner or provide services for an agreed high throughput component.


Publications

1-Ti modified Pd–Ag membranes for hydrogen separation F Pişkin, H Akyıldız, T Öztürk International Journal of Hydrogen Energy 40 (24), 2015, 7553-7558

2-Combinatorial screening of Pd-Ag-Ni membranes for hydrogen separation F Pişkin, T Öztürk Journal of Membrane Science 524, 2017,631-636

3-Nb-Pd-Ti BCC thin films for hydrogen separation F Pişkin, T Öztürk, Journal of Alloys and Compounds 775, 2019, 411-418

4-Development Pd based membranes for hydrogen separation via combinatorial approach, Mehmet Mert Köse, Fatih Pişkin and Tayfur Öztürk, 18TH International Symposium on Metal-Hydrogen Systems, Saint Malo, 26-31 May 2024

5-Combinatorial development of nanocrystalline/amorphous (La, Sr) CoO3-(La, Sr) 2 CoO4 composite cathodes for IT-SOFCs, D Sari, F Piskin, ZC Torunoglu, B Yasar, YE Kalay, T Ozturk, Solid State Ionics 326, 2019,124-130

6-Segregation Resistant Nanocrystalline/Amorphous (La, Sr) CoO3-(La, Sr) 2CoO4 Composite Cathodes for IT-SOFCs D Sari, B Yaşar, F Pişkin, YE Kalay, T Öztürk Journal of The Electro chemical Society 166 (15), F1157

7- Development of MnO2 Based Cathodes for Alkaline Batteries via Combinatorial Approach, Necdet Özgür Darıcıoğlu, Yiğit Akbaş ve Tayfur Öztürk, Journal of The Electrochemical Society, Volume 169, Number 12

8- Doped NaMnOx Cathodes for Zn-MnO2 Batteries for Improved Capacity and Rechargeability, Yiğit Akbaş, Necdet Özgür Darıcıoğlu ve Tayfur Öztürk , Materials Research Bulletin ( yayın sürecinde)