Based on our technology in the development of membranes for lithium-ion batteries, a sodium-ion batteries using Nafion membranes in their Na +-form is demonstrated, and shows good cycling performance.
An isoporous ion exchange membrane that mimics key features of biological sodium channels is constructed. The negatively charged subnanometer channels demonstrate charge-governed ion transport and pH-responsiveness. A prominent Na + /K + selectivity of up to 2.10 is realized.
In this communication, we report the use of a new polymer electrolyte, Nafion ® ion exchange membranes in the Na+ -form swollen with non-aqueous solvents, as both electrolyte and separator for the sodium-ion batteries.
Conclusion In summary, a Na + selective ion exchange membrane was constructed by exploiting the self-assembly of liquid crystalline monomers and the subsequent structure curing. The carboxylate groups lined on the channel surface render the membrane pH-responsive and enable charge-governed ion transport.
Sodium-ion batteries are receiving much attention since sodium is more abundant and potentially less expensive than lithium. As a low cost alternative to lithium-ion batteries, the sodium-ion batteries have emerged as an attractive electrochemical power source for large-scale electrical energy storage.
The structure-performance relationship of ion conductive membranes in flow batteries. The current limitation and future directions for ion conductive membranes. Flow batteries are one of the most promising techniques for stationary energy storage applications, benefiting from their high safety, high efficiency and long cycle life.
The most capable ion exchange membrane can realize the selective transport of K + over Na +, with a selectivity of approximately 1.4; such selectivity is induced by the size-sieving effect, established by the construction of ion channels with angstrom-scale precision [, , , , , , , ].
Based on our technology in the development of membranes for lithium-ion batteries, a sodium-ion batteries using Nafion membranes in their Na +-form is demonstrated, and shows good cycling performance.
Aqueous sodium-ion batteries are known for poor rechargeability because of the competitive water decomposition reactions and the high electrode solubility. Improvements have been reported by salt-concentrated and organic-hybridized electrolyte designs, however, at the expense of cost and safety. Here, we report the prolonged cycling of ASIBs in routine dilute …
The advancement of solid-state and redox-flow sodium-ion batteries requires sodium-ion exchange membranes with high conductivity, electrochemical stability, and mechanical robustness. This study …
Nafion 115 commercial membranes in the Na +-form (Nafion-Na) swollen with non-aqueous solvent used as both electrolyte and separator for sodium-ion battery were investigated. After swollen with ethylene carbonate (EC) – propylene carbonate (PC) mixed solvent, the Nafion-Na membranes showed ionic conductivity of 3.52 × 10 −4 S cm −1 at room …
New sodium-ion batteries using ion exchange membranes swollen with nonaqueous solvents as both electrolytes and separators have been first demonstrated, which show not only higher reversible specific capacity, but …
Ion exchange membranes (IEMs) are typically composed of hydrophobic substrates, immobilized ion-functionalized groups, and movable counter-ions. Depending on the type of ionic groups, IEMs are broadly classified into cation exchange membranes (CEMs) and anion exchange membranes (AEMs). Naturally, the ion-functionalized groups attached onto …
New sodium-ion batteries using ion exchange membranes swollen with nonaqueous solvents as both electrolytes and separators have been first demonstrated, which show not only higher...
Next-generation ion-exchange membranes could improve the efficiency of renewable energy storage devices and cut the costs involved in producing them. In the realm of renewable energy, ranging...
DOI: 10.1016/J.IJHYDENE.2013.12.119 Corpus ID: 95412674; Nafion membranes as electrolyte and separator for sodium-ion battery @article{Cao2014NafionMA, title={Nafion membranes as electrolyte and separator for sodium-ion battery}, author={Chengying Cao and Haibin Wang and Weiwei Liu and Xiaozhen Liao and Lei Li}, journal={International …
Here we report a sodium selective isoporous membrane (NaSIM) derived from lyotropic liquid crystals. This membrane consists of uniform ion conductive channels lined with …
The advancement of solid-state and redox-flow sodium-ion batteries requires sodium-ion exchange membranes with high conductivity, electrochemical stability, and mechanical robustness. This study demonstrates that membranes based on poly (ethylene oxide) (PEO) can meet these requirements.
Next-generation ion-exchange membranes could improve the efficiency of renewable energy storage devices and cut the costs involved in producing them. In the realm of renewable energy, ranging...
New sodium-ion batteries using ion exchange membranes swollen with nonaqueous solvents as both electrolytes and separators have been first demonstrated, which …
where A and σ 0 are the pre-exponential factors and E σ is the activation energy of ionic conductivity. The last equation is used for rather narrow temperature ranges. The activation energy of conductivity thus includes the activation energy of ion migration (E m) and an additional contribution of the enthalpy of defect formation (ΔH d /p).The features of ionic transfer in ion …
Request PDF | Nafion membranes as electrolyte and separator for sodium-ion battery | Nafion 115 commercial membranes in the Na+-form (Nafion-Na) swollen with nonaqueous solvent used as both ...
However, the company describes its technology as a ''membrane-less redox flow battery,'' which it began prototyping in September 2021. In other flow batteries, a membrane is used to separate the electrolytes, whereas ion exchange in the Swiss startup''s battery is controlled by non-miscible electrolytes. The company claims this makes the ...
Kim, H. et al. Ab initio study of the sodium intercalation and intermediate phases in Na 0.44 MnO 2 for sodium-ion battery. Chem. Mater. 24, 1205–1211 (2012).
New sodium-ion batteries using ion exchange membranes swollen with nonaqueous solvents as both electrolytes and separators have been first demonstrated, which …
New sodium-ion batteries using ion exchange membranes swollen with nonaqueous solvents as both electrolytes and separators have been first demonstrated, which show not only higher reversible specific capacity, but also better cycling stability compared with the conventional sodium-ion batteries usin …
In our experiments, the weight amount of Nafion on the LMO electrodes is about 0.56 mg cm-2. The 2016-coin type cells were assembled in the argon-filled glove box.
Here we report a sodium selective isoporous membrane (NaSIM) derived from lyotropic liquid crystals. This membrane consists of uniform ion conductive channels lined with carboxylate groups. These negatively charged ion channels demonstrate charge-governed ion transport, pH responsiveness, and Na + selectivity.
New sodium-ion batteries using ion exchange membranes swollen with nonaqueous solvents as both electrolytes and separators have been first demonstrated, which show not only higher reversible specific capacity, but also better cycling stability compared with the conventional sodium-ion batteries using a liqui
According to the nature of ion-exchange groups, IEMs can be divided into anion exchange membranes (AEMs) and cation exchange membranes (CEMs), in which an AEM carries positive charges, and a CEM carries negative charges (Fig. 2). For IEMs, the structure of polymer materials will largely affect the morphologies of resulted membranes and further ...
Amphoteric PSF(polysulfone)-g-NaPSS(sodium p-styrene sulfonate)/PVP (polyvinylpyrrolidone) blended ion exchange membranes were prepared by simple solution casting method with dimethyl sulfoxide (DMSO) as solvent. The effect of the ratio of PSF-g-NaPSS to PVP on the properties of the membranes were studied and compared to that of …
Based on our technology in the development of membranes for lithium-ion batteries, a sodium-ion batteries using Nafion membranes in their Na +-form is demonstrated, …
As a key component of flow batteries, an ion conductive membrane (ICM) plays a vital role in isolating active species from anolyte and catholyte, while transferring charge …
Perfluorinated sulfonic ion exchange membranes with ion exchange capacity (1.18 mmol g-1) were prepared according to our previous reports. S1The thickness of our PFSA membranes was about 90±3 μm. Both Nafion 115 and our PFSA membranes were converted to their Na-form by using 1M NaOH aqueous solution at 80 oC for 12 h.
As a key component of flow batteries, an ion conductive membrane (ICM) plays a vital role in isolating active species from anolyte and catholyte, while transferring charge careers to complete the internal circuit.
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