Tandem Conversion of Polysulfides via Coupling Ni Single–Atoms and Clusters for Na–S Batteries
Abstract
Abstract Lithium ion batteries have been trialed for grid−oriented energy storage, yet their large−scale implementation is theoretically limited by the global lithium resource reserve. Relying on abundant sodium and sulfur resources as well as cost−effectiveness, the sodium–sulfur battery is gaining recognition as a promising technology for next−generation grid−oriented energy storage. Nevertheless, their development has been restrained by the low conductivity and huge volume expansion of sulfur, the shuttle effect of polysulfides, and the dendrite growth of sodium. Herein, a host material, bifunctionally designed for both cathodes and anodes, is presented by coupling nickel single atoms and clusters on a nitrogen−doped porous carbon monolith. It accelerates polysulfides conversion kinetics and improves uniform sodium deposition, conferring excellent cycle duration and rate capability. It also allows fast electron and ion transports while alleviating the volume expansion. Consequently, the assembled sodium–sulfur battery demonstrates impressive cycle and rate performances, offering an attractive perspective for advancing durable sodium–sulfur batteries.
Article Details
Authors (9)
Jinjue Zeng
National Laboratory of Solid State Microstructures (NLSSM) Collaborative Innovation Center of Advanced Microstructures Jiangsu Provincial Laboratory For Nanotechnology College of Engineering and Applied Sciences Nanjing University Nanjing China
Tao Wang
Zhipeng Sun
State Key Laboratory of High-Efficiency Production of Wheat-Maize Double Cropping, Agronomy College, Henan Agricultural University
Chen Zhang
Shenzhen Institute for Quantum Science and Engineering, Department of Chemistry, and Department of Physics
Hanqing Gao
National Laboratory of Solid State Microstructures (NLSSM) Collaborative Innovation Center of Advanced Microstructures Jiangsu Provincial Laboratory For Nanotechnology College of Engineering and Applied Sciences Nanjing University Nanjing China
Xiangfen Jiang
State Key Laboratory of Mechanics and Control of Mechanical Structures Key Laboratory for Intelligent Nano Materials and Devices of Ministry of Education College of Material Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing China
Lijun Yang
Ballard Power Systems Inc.
Yoshio Bando
Australian Institute for Innovative Materials University of Wollongong Wollongong New South Wales Australia
Xuebin Wang