PhD students

Yi Chen

University of Technology Sydney (Supervisor: Guoxiu Wang)

PhD topic – Hybrid supercapacitors with high energy and power densities for rail industry applications

Research summary

This research aimed to develop a hybrid supercapacitor with high energy and power densities and advanced supercapacitor management systems for rail. The implementation of this new supercapacitor technology could effectively provide voltage stabilisation for rail systems, and improve the performance of propulsion for light rail vehicles.

Completion date

February 2020

Key achievements

• We have synthesized several electrode materials for hybrid supercapacitors.
• The electrode materials show high power and energy densities.
• In addition, the synthetic method is facile to be enlarged, demonstrating great potential for practical rail industry application.

Publications

Chen, Y., Zhang, W., Zhou, D., Tian, H., Su, D., Wang, C., Stockdale, D., Kang, F., Li, B. and Wang, G. Co-Fe Mixed Metal Phosphide Nanocubes with Highly Interconnected-Pore Architecture as an Efficient Polysulfide Mediator for Lithium-Sulfur Batteries, ACS Nano, 2019, 13, 4731-4741.

Chen, Y., Choi, S., Su, D., Gao, X. and Wang, G. Self-standing sulfur cathodes enabled by 3D hierarchically porous titanium monoxide-graphene composite film for high-performance lithium-sulfur batteries, Nano Energy, 2018, 47, 331-339.

Gao, X., Zhou, D., Chen, Y., Wu, W., Su, D., Li, B. and Wang, G. Strong charge polarization effect enabled by surface oxidized titanium nitride for lithium-sulfur batteries, Commun. Chem., 2019, 2, 1-10.

Song, J., Guo, X., Zhang, J., Chen, Y., Zhang, C., Luo, L., Wang, F. and Wang, G. Rational design of free-standing 3D porous MXene/rGO hybrid aerogels as polysulfide reservoirs for high-energy lithium-sulfur batteries, J. Mater. Chem. A, 2019, 7, 6507-6513.

Tian, H., Shao, H., Chen, Y., Fang, X., Xiong, P., Sun, B., Notten, P., Wang, G. Ultra-stable sodium metal-iodine batteries enabled by an in-situ solid electrolyte interphase, Nano Energy, 2019, 57, 692-702.

Tian, H., Yu, X., Shao, H., Dong, L., Chen, Y., Fang, X., Wang, C., Han, W. and Wang, G. Unlocking Few-Layered Ternary Chalcogenides for High-Performance Potassium-Ion Storage, Adv. Energy Mater., 2019, 9, 1901560.

Xu, J., Zhang, W., Chen, W., Fan, H., Su, D. and Wang, G. MOF-derived porous N-Co3O4@N-C nanododecahedra wrapped with reduced graphene oxide as a high capacity cathode for lithium-sulfur batteries, J. Mater. Chem. A, 2018, 6, 2797-2807.

Zhou, D., Chen, Y., Li, B., Fan, H., Cheng, F., Shanmukaraj, D., Rojo, T., Armand, M. and Wang, G. A Stable Quasi-Solid-State Sodium-Sulfur Battery, Angew. Chem. Int. Ed., 2018, 57, 10168-10172.