High-density/efficient surface active sites on modified separators to boost Li-S batteries via atomic Co3+-Se termination

Dual-functional boron-modification on a cobalt-free single-crystal layered cathode for high-voltage lithium-ion batteries

“…X-ray absorption spectroscopy (XAS), as a sensitive technique to probe local chemistry, [41][42][43] is carried out to investigate the oxidation state and local environment of Ni. According to the Ni K-edge X-ray absorption near edge structure (XANES) spectrum in Fig.…”

CoS2 and FeS2 Nanoparticles Embedded in Carbon Polyhedrons for Lithium–Sulfur Batteries

“…With the substantial potential capacity and energy density, lithium–sulfur (Li–S) batteries have emerged as the most attractive research area for energy storage systems for power grids and basic electronic devices. − But so far, mass production of lithium–sulfur batteries has been hampered mainly by their short cycle lives. Because of the slow reaction kinetics, the shuttle effect interferes with the conversion process of polysulfides.…”

Highly reversible Li/Li2S3 batteries with an advanced cathode structure

“…[5][6][7][8][9][10] Also, the reaction kinetics of sulfur cathodes need to be improved by catalytic conversion, which contributes to a higher utilization of sulfur. 11,12 Recently, fully lithiated sulfur, lithium sulde (Li 2 S) with a theoretical capacity of 1166 mA h g −1 , has received much attention due to the potential use in pairing with non-lithium anodes. [13][14][15][16][17][18][19][20][21][22] Despite considerable advantages of Li 2 S, it is neither electrically conductive nor soluble in the liquid electrolyte and its oxidation experiences very high polarization; as a consequence, a higher activation voltage (3.5-4 V) for boosting the initial charging process is required.…”