Dr. Fanjun Kong, from the School of Electronic Information Engineering recently published the title " Core-Shell structured SnSe@C microrod for Na-ion battery anode " in the International renowned journal
Recently, Dr. Fanjun Kong published a paper in the Journal of Energy Chemistry with the first author and Changshu Institute of Technology as the first completion unit. In this paper, the core-shell structured SnSe@C microrods are designed and synthesized. The as-prepared SnSe@C hybrids exhibit superior electrochemical performance with high reversible capacity and excellent cycling stability. Both diffusion-controlled and pseudocapacitive behaviors participate in the kinetics process. Besides, the sodium storage mechanisms of SnSe are combination of insertion, conversion and alloying reactions. Thesis link:
https://www.sciencedirect.com/science/article/abs/pii/S2095495620305040?via%3Dihub
Paper Title：Core-Shell structured SnSe@C microrod for Na-ion battery anode
Journal：Journal of Energy Chemistry
Abstract：
High-performance transition metal selenides are considered as promising electrode materials in alkali-ion batteries. However, the poor conductivity limits their further application. In this work, the SnSe nanoparticles encapsulated in the carbon nanofibers (SnSe@C) with microrod morphology and core-shell structure are prepared by electrospinning and annealing process, and investigated as anode materials for sodium ion batteries. Benefiting from this unique structure, the SnSe@C can deliver a reversible capacity of 283.8 mAh g-1 after 500 cycles at a high current density of 1.0 A g-1. The sodium ion storage mechanisms of SnSe are further characterized by ex situ X-ray diffraction, high-resolution transmission electron microscope and selected area electron diffraction measurements. This work may provide a new avenue for synthesis of metal selenides with core-shell structure and a good idea for studying the kinetics process.
Fig.1. the morphology, cycling performance and sodium storage mechanisms of SnSe@C microrods.
Fanjun Kong is a lecturer of Department of New Energy Science and Engineering, Changshu Institute of Technology. He received his PhD degree in 2020 from Soochow University. His current research interests focus on the new-type battery electrode. He has published 10+ papers in prestigious international refereed journals.
