Natrium- und Kalium-Ionen-Batterien basierend auf hochgeordneten Elektrodenarchitekturen
Zusammenfassung der Projektergebnisse
The booming development of portable electronics, electric vehicles, and grid-scale energy storage stations has increased the demand for high-performance sustainable batteries beyond lithium-ion batteries (LIBs) when considering the total economic and environmental benefits. Among various battery technologies, sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) have shown promising potentials as low-cost energy storage devices because of the earth-abundant and cost-efficient sodium and potassium resources. However, due to the large ionic radius of sodium- and potassium-ion than that of lithium-ion (1.02 Å and 1.38 Å, respectively, vs. 0.76 Å), the insertion/extraction of large sodium- and potassiumion causes large volume variations and thereafter pulverization of electrode materials, leading to the rapid capacity decay and low cycling stability of both SIBs and PIBs. Therefore, a major scientific and technological challenge of developing SIBs and PIBs is to exploit host materials that have the superior capability to reversibly store amounts of sodium- and potassium-ions and the sufficient structural stability to withstand the huge volume change during the repeated charge-discharge processes. In this project, material- and electrodedesign strategies were employed to improve the sodium- and potassium-ion storage capability of electrode materials, including two-dimensional transition metal dichalcogenides (MoS 2 , MoSe 2 , and WS2 ), transition metal oxides (TiO 2 , nickel-cobalt oxide), and carbonbased materials. The material design strategies, including defect/interlayer engineering, crystallinity controlling, and composition modulating, aimed to increase conductivity, mitigate big volume change, and enhance electrochemical kinetics. Defect/interlayer engineering of MoS 2 successfully created in-basal-plane defects as active sites to intercalate potassium ions for improving the potassium ion storage performance of MoS 2 ; a heterostructure consisting of highly-crystalline ultrathin MoSe 2 nanosheets coated on multiwall carbon nanotubes was synthesized to effectively accelerate electron transport and meanwhile suppress the aggregation of the 2D MoSe 2 nanosheets, which the rate capability is among the best ones of the reported molybdenum chalcogenides as PIBs anode; heteroatom-doped carbon materials have been prepared as advanced electrode materials for potassium-ion storage application. Besides, heteroatoms doping was also applied to adjust the chemical composition and structural properties of transition metal oxides to optimize the sodium-ion storage performance. Concerning the electrode design strategies, highly-ordered nanoarrays have been rationally designed and fabricated as electrodes for SIBs and PIBs through template-assisted fabrication approaches with nanoporous anodic alumina oxide templates and polystyrene sphere as templates. Electrochemical performance enhancement of SIBs and PIBs could be optimized by precisely controlling the structural features (e.g., dimensions, morphologies) of the highly-ordered nanoarrays. Particularly, the electrode with a threedimensional ordered microporous architecture was demonstrated to enable significant improvements in electronic conductivity, ion accessibility, and electrode integrity simultaneously. Full-cell SIBs and PIBs were finally assembled and exhibited significantly improved energy storage performance. In addition to SIBs and PIBs applications, the highlyordered nanoarrays also have been studied and exhibited great potentials as the promising building blocks to design and construct micro-supercapacitors.
Projektbezogene Publikationen (Auswahl)
-
Ammonium Vanadium Bronze as a Potassium-Ion Battery Cathode with High Rate Capability and Cyclability, Small Methods 3 (2019) 1800349
Y. Xu, H. Dong, M. Zhou, C. Zhang, Y. Wu, W. Li, Y. Dong, Y. Lei
-
Bismuth oxychloride nanoflake assemblies as a new anode for potassium ion batteries, Chem. Commun. 55 (2019) 6507
W. Li, Y. Xu, Y. Dong, Y. Wu, C. Zhang, M. Zhou, Q. Fu, M. Wu, Y. Lei
-
Enhancing potassium-ion battery performance by defect and interlayer engineering, Nanoscale Horiz. 4 (2019) 202
Y. Xu, F. Bahmani, M. Zhou, Y. Li, C. Zhang, F. Liang, S. Kazemi, U. Kaiser, G. Meng, Y. Lei
-
Insights into the Crystallinity of Layer-Structured Transition Metal Dichalcogenides on Potassium Ion Battery Performance: A Case Study of Molybdenum Disulfide, Small 15 (2019) 1900497
Y. Dong, Y. Xu, W. Li, Q. Fu, M. Wu, E. Manske, J. Kroeger, Y. Lei
-
Polyimide@Ketjenblack Composite: A Porous Organic Cathode for Fast Rechargeable Potassium-Ion Batteries, Small 16 (2020) 2002953
C. Zhang, Y. Xu, K. He, Y. Dong, H. Zhao, L. Medenbach, Y. Wu, A. Balducci, T. Hannappel, Y. Lei
-
Bismuth Nanoparticles Confined in Carbonaceous Nanospheres as Anodes for High-Performance Potassium-Ion Batteries, ACS Appl. Mater. Interfaces 13 (2021) 31766
J. Yao, C. Zhang, G. Yang, M. Sha, Y. Dong, Q. Fu, Y. Wu, H. Zhao, M. Wu, Y. Lei
-
Bismuth selenide nanosheets confined in thin carbon layers as anode materials for advanced potassium-ion batteries, Inorg. Chem. Front. 8 (2021) 4267
X. Zhao, C. Zhang, G. Yang, Y. Wu, Q. Fu, H. Zhao, Y. Lei
-
Carbon-Free Crystal-like Fe 1-x S as an Anode for Potassium- Ion Batteries, ACS Appl. Mater. Interfaces 13 (2021) 55218
Y. Wu, R. Xu, Z. Wang, X. Hao, C. Zhang, H. Zhao, W. Li, S. Wang, Y. Dong, Z. Huang, Y. Lei
-
Electrical Conductivity Adjustment for Interface Capacitive-Like Storage in Sodium-Ion Battery, Adv. Funct. Mater. 31 (2021) 2101081
Q. Li, H. Wang, X. Tang, M. Zhou, H. Zhao, Y. Xu, W. Xiao, Y. Lei
-
Enhanced Potassium Storage Capability of Two-Dimensional Transition-Metal Chalcogenides Enabled by a Collective Strategy, ACS Appl. Mater. Interfaces 13 (2021) 18838
Y. Wu, Q. Zhang, Y. Xu, R. Xu, L. Li, Y. Li, C. Zhang, H. Zhao, S. Wang, U. Kaiser, Y. Lei
