Electrochemical catalysis and asymmetric synthesis on the surface of topological crystals

Many exotic properties observed in topological materials are closely tied to the band inversion and linear dispersion, including ultra-high mobility and conductivity, giant magnetoresistance, and non-trivial surface states. Of particularly interest is the stable metallic surface states that are protected by time-reversal symmetry. These topological crystals provide an ideal platform for understanding the reactions happening at the interfaces such as heterogeneous catalysis, lithium-ion battery, and so on. Recently, it has been demonstrated that the non-trivial surface states could deliver or accept electrons from the surface adsorbates and speeding the catalysis reactions [1,2]. This provides an additional route for the design of functional materials for energy conversion and storage [3,4].

We are looking for a highly qualified and motivated PhD candidate in material science and electrochemistry. In this project, you will work in MPI CPfS Dresden, aiming at revealing the relations between surface reactions and topological properties. Part of your time will be spent on understanding their magnetic and electrical transport properties that are resulted from the topology order. Electrochemical catalysis reactions will be carried out on our electrochemical workstation, or together with partners from the TU Dresden.

References:

[1] G. Li, Q. Xu, W. Shi, C. Fu, L. Jiao, M.E. Kamminga, M. Yu, H. Tuysuz, N. Kumar, V. Süss, R. Saha, A.K. Srivastava, S. Wirth, G. Auffermann, J. Gooth, S. Parkin, Y. Sun, E. Liu, C. Felser
Surface states in bulk single crystal of topological semimetal Co3Sn2S2 toward water oxidation
Sci. Adv. 5, eaaw9867 (2019)
[2] G. Li, C. Fu, W. Shi, L. Jiao, J. Wu, Q. Yang, R. Saha, M.E. Kamminga, A.K. Srivastava, E. Liu, A.N. Yazdani, N. Kumar, J. Zhang, G.R. Blake, X. Liu, M. Fahlman, S. Wirth, G. Auffermann, J. Gooth, S. Parkin, V. Madhavan, X. Feng, Y. Sun, C. Felser
Dirac Nodal Arc Semimetal PtSn4 : An Ideal Platform for Understanding Surface Properties and Catalysis for Hydrogen Evolution
Angewandte Chemie 58, 2-10 (2019)
[3] H. Zhong, K.H. Ly, M. Wang, Y. Krupskaya, X. Han, J. Zhang, J. Zhang, V. Kataev, B. Buchner, I.M. Weidinger, S. Kaskel, P. Liu, M. Chen, R. Dong, X. Feng
A Phthalocyanine-Based Layered Two-Dimensional Conjugated Metal-Organic Framework as a Highly Efficient Electrocatalyst for the Oxygen Reduction Reaction
Angewandte Chemie 58, 10677-10682 (2019)
[4] G. Chen, T. Wang, J. Zhang, P. Liu, H. Sun, X. Zhuang, M. Chen, X. Feng
Accelerated Hydrogen Evolution Kinetics on NiFe-Layered Double Hydroxide Electrocatalysts by Tailoring Water Dissociation Active Sites
Adv. Mater. 30, 1706279 (2018).

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