Sulfur-doped mesoporous carbon from surfactant-intercalated layered double hydroxide precursor as high-performance anode nanomaterials for both Li-ion and Na-ion batteries |
| |
| Affiliation: | 1. Centre of Excellence in Solar Energy, National Chemical Laboratory (CSIR-NCL), Dr Homi Bhabha Road, Pune 411 008, India;2. Department of Physics, University of Pune, Pune 411 008, India;3. Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, Research Techno Plaza, 637553, Singapore;4. School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore;1. School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China;2. Institute for Advanced Materials, Jiangsu University, Zhenjiang 212013, Jiangsu, China;1. State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei Province, 066004, China;2. School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore;3. Department of Mechanical Engineering, National University of Singapore, 117574, Singapore;1. School of Metallurgy and Environment, Central South University, Changsha 410083, China;2. Engineering Research Center of High Performance Battery Materials and Devices, Research Institute of Central South University in Shenzhen, Shenzhen 518057, China |
| |
| Abstract: | We describe a preparation of sulfur-doped mesoporous amorphous carbon (SMAC) from a commercially available alkyl surfactant sulfonate anion-intercalated NiAl-layered double hydroxide precursor via thermal decomposition and subsequent acid leaching. The resultant amorphous carbon is endowed with the integrated advantage of featuring high reversible capacity and long cycling stability: intrinsic doping of sulfur, large specific area, and broad mesopore size distribution. Electrochemical evaluation shows that the SMAC electrode exhibits highly enhanced electrochemical performances, compared with the electrode of non-doped mesoporous and amorphous carbon prepared by using a different surfactant (sodium laurate). A high reversible capacity of 958 mA h g?1 is achieved for the SMAC electrode after 110 cycles at 200 mA g?1, and especially a superlong cycle life with a reversible capacity of 579 mA h g?1 after 970 cycles at 500 mA g?1. Moreover, the SMAC electrode can facilitate the reversible insertion/extraction of Na ion, owing to the proper specific area and mesopore size distribution, as well as the improved electronic conductivity resulted from doping of sulfur. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
