Selective Catalysis Remedies Polysulfide Shuttling in Lithium‐Sulfur Batteries

Polysulfide flow batteries enabled by percolating nanoscale conductor networks.

A new approach to flow battery design is demonstrated wherein diffusion-limited aggregation of nanoscale conductor particles at ∼1 vol % concentration is used to impart mixed electronic-ionic conductivity to redox solutions, forming flow electrodes with embedded current collector networks that self-heal after shear. Lithium polysulfide flow cathodes of this architecture exhibit electrochemical ...

Highly reversible lithium/dissolved polysulfide batteries with carbon nanotube electrodes.

Free standing acetylene black mesh to capture dissolved polysulfide in lithium sulfur batteries.

Herein, we report a cheap and simple approach to solve the polysulfide dissolution problem in lithium sulfur batteries. It was interestingly revealed that a simple insertion of acetylene black mesh enabled us to obtain the capacity of 1491 mA h g(-1) at initial discharge and 1062 mA h g(-1) after 50 cycles.

Tailoring Surface Acidity of Metal Oxide for Better Polysulfide Entrapment in LiS Batteries

© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 1 wileyonlinelibrary.com transport of PS into electrolyte under high concentration gradient and internal electric field. Introducing chemical interaction between functional groups/polar sites on the host with PS is emerging as a more effective approach for caging sulfur species.[5] Recent reports found that using functionalized carbon[6,7] and m...

Chloride‐Reinforced Carbon Nanofiber Host as Effective Polysulfide Traps in Lithium–Sulfur Batteries

Lithium-sulfur (Li-S) battery is one of the most promising alternatives for the current state-of-the-art lithium-ion batteries due to its high theoretical energy density and low production cost from the use of sulfur. However, the commercialization of Li-S batteries has been so far limited to the cyclability and the retention of active sulfur materials. Using co-electrospinning and physical vap...