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Development of sodium sulfur battery（NAS battery） and application

储能科学与技术 2016年第3期5卷 329-334页

作者： TAMAKOSH Tomio NAS battery Div. NGK Insulators LTD

NGK has developed a sodium sulfur battery(NAS battery) for load leveling applications, allowing the grid to deal with increasing peak. The recent growth in environmentally friendly renewable energies causes network instability. A secondary battery based energy storage system is seen as one of the strongest solutions to stabilize the network while improving the efficiency and usability of these renewable energy technologies. The NAS battery features long duration discharge, compactness, and a long lifespan of 15 years. The capacity for long duration discharge is one of the most notable features of this technology, a feature which becomes more important as renewable energy generation increases. In this paper, recent design of the NAS battery system is detailed, and a few applications are described.

关键词： sodium sulfur battery energy storage

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In situ growth of NiS_(2) nanosheet array on Ni foil as cathode to improve the performance of lithium/sodium-sulfur batteries

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Science China(Technological Sciences) 2022年第1期65卷 231-237页

作者： FAN MouPing CHEN YuanMao KE Xi HUANG ZeXi CHEN YouChen WU WenLi QU XiaoFeng SHI ZhiCong GUO ZaiPing Smart Energy Research Centre School of Materials and EnergyGuangdong University of TechnologyGuangzhou 510006China Institute for Superconducting and Electronic Materials Australian Institute for Innovative MaterialsUniversity of WollongongInnovation CampusNorth WollongongNSW 2500Australia

The NiS;nanosheet array on Ni foil(NiS2/NF)was prepared using an in situ growth strategy and sulfidation method and was used as the cathode of lithium sulfur *** unique nanostructure of the NiS;nanosheet array can provide abundant active sites for the adsorption and chemical action of *** with the sulfur powder coated pure NF(pure NF-S)for lithium sulfur battery,the sulfur powder coated NiS_(2)/NF(NiS_(2)/NF-S)electrode exhibits superior electrochemical ***,the NiS_(2)/NF-S delivered a high reversible capacity of 1007.5 m Ah g^(-1) at a current density of 0.1 C(1 C=1675 mA g^(-1))and kept 74.5% of the initial capacity at 1.0 C after 200 cycles,indicating the great promise of NiS_(2)/NF-S as the cathode of lithium sulfur *** addition,the NiS_(2)/NF-S electrode also showed satisfactory electrochemical performance when used as the cathode for sodium sulfur battery.

关键词： nickel sulfides lithium sulfur battery sodium sulfur battery nanosheet array structure electrochemical performance

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Regulating the Deposition of Insoluble sulfur Species for Room Temperature sodium-sulfur Batteries

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Chemical Research in Chinese Universities 2022年第1期38卷 128-135页

作者： WANG Chaozhi CUI Jingqin FANG Xiaoliang ZHENG Nanfeng Pen-Tung Sah Institute of Micro-Nano Science and Technology State Key Laboratory for Physical Chemistry of Solid SurfacesCollaborative Innovation Center of Chemistry for Energy MaterialsNational&Local Joint Engineering Research Center for Preparation Technology of NanomaterialsCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005P.R.China Fujian Science&Technology Innovation Laboratory for Energy Materials of China Xiamen 361005P.R.China

Room temperature sodium-sulfur(RT-Na-S) batteries are regarded as promising candidates for next-generation high-energy-density batteries. However, in addition to the severe shuttle effect, the inhomogeneous deposition of the insoluble sulfur species generated during the discharge/charge processes also contributes to the rapid capacity fade of RT-Na-S batteries. In this work, the deposition behavior of the insoluble sulfur species in the traditional slurry-coated sulfur cathodes is investigated using microporous carbon spheres as model sulfur host materials. To achieve uniform deposition of insoluble sulfur species, a self-supporting sulfur cathode fabricated by assembling microporous carbon spheres is designed. With homogeneous sulfur distribution and favorable electron transport pathway, the self-supporting cathode delivers remarkably enhanced rate capability(509 mA·h/g at 2.5 C, 1 C=1675 mA/g), cycling stability(718 mA·h/g after 480 cycles at 0.5 C) and areal capacity(4.98 mA·h/cm2 at 0.1 C), highlighting the great potential of manipulating insoluble sulfur species to fabricate high-performance RT-Na-S batteries.

关键词： sodium sulfur battery Polysulfide Discharge/charge product High sulfur loading Stable cycling

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