The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Yunhui Huang - One of the best experts on this subject based on the ideXlab platform.
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toward a stable Sodium Metal anode in carbonate electrolyte a compact inorganic alloy interface
Journal of Physical Chemistry Letters, 2019Co-Authors: Xueying Zheng, Wei Luo, Ying Huang, Jiayun Wen, Huabin Sun, Yunhui HuangAbstract:Development of the next-generation, high-energy-density, low-cost batteries will likely be fueled by Sodium (Na) Metal batteries because of their high capacity and the abundance of Na. However, their practical application is significantly plagued by the hyper-reactivity of Na Metal, unstable solid electrolyte interphase (SEI), and dendritic Na growth, leading to continuous electrolyte decomposition, low Coulombic efficiency, large impedance, and safety concerns. Herein, we add a small amount of SnCl2 additive in a common carbonate electrolyte so that the spontaneous reaction between SnCl2 and Na Metal enables in situ formation of a Na–Sn alloy layer and a compact NaCl-rich SEI. Benefitting from this design, rapid interfacial ion transfer is realized and direct exposure of Na Metal to the electrolyte is prohibited, which jointly achieve a nondendritic deposition morphology and a markedly reduced voltage hysteresis in a Na/Na symmetric cell for over 500 h. The Na/SnCl2-added electrolyte/Na3V2(PO4)3 full cel...
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Sodium Metal anodes for room temperature Sodium ion batteries applications challenges and solutions
Energy Storage Materials, 2019Co-Authors: Xueying Zheng, Clement Bommier, Wei Luo, Linghao Jiang, Yanan Hao, Yunhui HuangAbstract:Abstract Room-temperature (RT) Sodium-ion batteries (SIBs) have gained much attention due to rich Sodium resource and low cost for potential application in large-scale energy storage. To date, cathode materials have been well investigated, but anode materials still face long-standing challenges including low capacity and high cost, which have led to comprehensive research efforts in resolving these issues. Among the many candidate anode materials best suited to meet these challenges, Na Metal possesses the most future potential: the lowest redox potential, highest theoretical capacity, earth-abundancy and a demonstrated feasibility in previous electrochemical systems. Yet several factors still hinder the applicability of Na Metal anodes in future larger scale, such as unstable solid electrolyte interphase, large volume change upon cycling and safety concerns related to the uncontrolled dendritic Na growth. As such, this review summarizes the applications of Na Metal anodes before providing an in-depth review of research efforts attempting to solve the aforementioned challenges. Specifically, recently-developed strategies to protect Na Metal anodes by electrolyte optimization, artificial solid electrolyte interphase, and electrode structure design are outlined and analyzed in detail. We also highlight recent progresses on Na Metal protection based on solid-state batteries and conclude by providing a future outlook on the development of Na Metal anodes.
Hyo-jun Ahn - One of the best experts on this subject based on the ideXlab platform.
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discharge properties of all solid Sodium sulfur battery using poly ethylene oxide electrolyte
Journal of Power Sources, 2007Co-Authors: Cheol-wan Park, Ho Suk Ryu, Jou-hyeon Ahn, Jaiyoung Lee, Ki-won Kim, Hyo-jun AhnAbstract:Abstract An all-solid Sodium/sulfur battery using poly (ethylene oxide) (PEO) polymer electrolyte are prepared and tested at 90 °C. Each battery is composed of a solid sulfur electrode, a Sodium Metal electrode, and a solid PEO polymer electrolyte. During the first discharge, the battery shows plateau potentials at 2.27 and at 1.76 V. The first discharge capacity is 505 mAh g −1 sulfur at 90 °C. The capacity drastically decreases by repeated on charge–discharge cycling but remains at 166 mAh g −1 sulfur after 10 cycles. The latter value is higher than that reported for a Na/poly (vinylidene difluoride)/S battery at room temperature.
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room temperature solid state Sodium sulfur battery
Electrochemical and Solid State Letters, 2006Co-Authors: Cheol-wan Park, Ho Suk Ryu, Jou-hyeon Ahn, Ki-won Kim, Hyo-jun AhnAbstract:Solid-state Sodium/sulfur batteries using polyvinylidene-fluoride-hexafluoropropene (PVDF) polymer electrolyte were prepared and tested at room temperature. Solid Sodium/sulfur batteries may be composed of solid-composite-type sulfur electrodes, Sodium Metal electrodes, and PVDF gel polymer electrolyte. The PVDF gel polymer electrolyte with tetraglyme plasticizer and NaCF 3 SO 3 salt had a high Sodium ion conductivity of 5.1 X 10 -4 S cm -1 at 25°C. During the first discharge, the Sodium/sulfur battery showed two plateau potentials of 2.27 and 1.73 V, respectively. The first discharge capacity was 489 mAh/g sulfur at room temperature, which was similar to the high temperature battery. The discharge capacity drastically decreased by repeated charge-discharge cycling, and remained at 40 mAh/g after 20 cycles.
Zhen Zhou - One of the best experts on this subject based on the ideXlab platform.
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critical interface between inorganic solid state electrolyte and Sodium Metal
Materials Today, 2020Co-Authors: Bin Tang, P W Jaschin, Zhen ZhouAbstract:Abstract With widening applications in next-generation energy storage systems, rechargeable secondary batteries with enhanced safety and energy density are imperative for technological advancements. All-solid-state Sodium batteries can be a promising low-cost and high-energy-density candidate, provided that stable cycling of the energy-dense Na Metal anode can be achieved. However, the interface between Na Metal and solid-state electrolyte remains a challenging problem. Here we comprehensively review various physical and chemical properties of different types of Sodium-based solid-state electrolytes including Sodium β-alumina, Na super ionic conductors (NASICON), chalcogenides, perovskites, complex hydrides and antiperovskites, and discuss some critical common factors that affect the Na/electrolyte interface stability. We also summarize the state-of-art strategies to engineer the interface for better electrochemical performances.
Arumugam Manthiram - One of the best experts on this subject based on the ideXlab platform.
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ionic liquid il laden Metal organic framework il mof electrolyte for quasi solid state Sodium batteries
ACS Applied Materials & Interfaces, 2021Co-Authors: Nicholas S Grundish, John B Goodenough, Arumugam ManthiramAbstract:An ionic liquid (IL) laden Metal-organic framework (MOF) Sodium-ion electrolyte has been developed for ambient-temperature quasi-solid-state Sodium batteries. The MOF skeleton is designed according to a UIO-66 (Universitetet i Oslo) structure. A Sodium sulfonic (-SO3Na) group grafted to the UIO-based MOF ligand improves the Na+-ion conductivity. Upon lading with a Sodium-based ionic liquid (Na-IL), Sodium bis(trifluoromethylsulfonyl)imide (NaTFSI) in 1-n-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide (Bmpyr-TFSI), the Na-IL laden sulfonated UIO-66 (UIOSNa) quasi-solid electrolyte exhibits a Na+-ion conductivity of 3.6 × 10-4 S cm-1 at ambient temperature. Quasi-solid-state Sodium batteries with the Na-IL/UIOSNa electrolyte are demonstrated with a layered Na3Ni1.5TeO6 cathode and Sodium-Metal anode. The quasi-solid-state Na∥Na-IL/UIOSNa∥Na3Ni1.5TeO6 cells show remarkable cycling performance.
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performance enhancement and mechanistic studies of room temperature Sodium sulfur batteries with a carbon coated functional nafion separator and a na2s activated carbon nanofiber cathode
Chemistry of Materials, 2016Co-Authors: Arumugam ManthiramAbstract:Operation of Sodium–sulfur batteries at room temperature has been proposed and studied for about a decade, but polysulfide-shuttle through the traditional battery separator and low-utilization of the sulfur cathode commonly have been the major challenges. Also, because of the highly active nature of the Sodium Metal, the conventional room temperature Sodium–sulfur (RT Na–S) battery concept with the Sodium–Metal anode and elemental sulfur cathode imposes serious safety concerns. To overcome the above difficulties, we present here a RT Na–S system with an advanced membrane-electrode-assembly (MEA) comprising a carbon-coated, presodiated Nafion membrane (Na-Nafion) and a Sodium sulfide (Na2S) cathode. The Na-Nafion membrane provides a facile Na+-ion conductive path and serves as a cation-selective shield to prevent the migration of the polysulfides to the anode. The carbon coating on the Na-Nafion plays an upper-current-collector role and thereby improves the electrochemical utilization of the active Na2S. E...
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Performance Enhancement and Mechanistic Studies of Room-Temperature Sodium–Sulfur Batteries with a Carbon-Coated Functional Nafion Separator and a Na2S/Activated Carbon Nanofiber Cathode
2016Co-Authors: Arumugam ManthiramAbstract:Operation of Sodium–sulfur batteries at room temperature has been proposed and studied for about a decade, but polysulfide-shuttle through the traditional battery separator and low-utilization of the sulfur cathode commonly have been the major challenges. Also, because of the highly active nature of the Sodium Metal, the conventional room temperature Sodium–sulfur (RT Na–S) battery concept with the Sodium–Metal anode and elemental sulfur cathode imposes serious safety concerns. To overcome the above difficulties, we present here a RT Na–S system with an advanced membrane-electrode-assembly (MEA) comprising a carbon-coated, presodiated Nafion membrane (Na-Nafion) and a Sodium sulfide (Na2S) cathode. The Na-Nafion membrane provides a facile Na+-ion conductive path and serves as a cation-selective shield to prevent the migration of the polysulfides to the anode. The carbon coating on the Na-Nafion plays an upper-current-collector role and thereby improves the electrochemical utilization of the active Na2S. Employing Na2S as the cathode provides a pathway to develop the RT Na–S batteries with Sodium–Metal-free anodes. The RT Na–S battery with the above MEA exhibits remarkably enhanced capacity and cyclability in contrast to the Na–S batteries with the conventional electrolyte–separator configuration. Mechanistic studies reveal that the suppression of polysulfide migration through the Na-Nafion is due to size and electronic effects
Leo Duchene - One of the best experts on this subject based on the ideXlab platform.
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a highly stable Sodium solid state electrolyte based on a dodeca deca borate equimolar mixture
Chemical Communications, 2017Co-Authors: Leo Duchene, Rubensimon Kuhnel, Daniel Rentsch, Arndt Remhof, Hansrudolf Hagemann, Corsin BattagliaAbstract:Na2(B12H12)0.5(B10H10)0.5, a new solid-state Sodium electrolyte is shown to offer high Na+ conductivity of 0.9 mS cm−1 at 20 °C, excellent thermal stability up to 300 °C, and a large electrochemical stability window of 3 V including stability towards Sodium Metal anodes, all essential prerequisites for a stable room-temperature 3 V all-solid-state Sodium-ion battery.
