Results 311 to 320 of about 531,299 (389)

Binder‐Free Self‐Standing Hard Carbon Electrodes Graphite‐Coated by PE‐CVD to Boost the Efficiency of Na‐Ion Batteries

open access: yesBatteries &Supercaps, EarlyView.
Binder‐free, self‐standing hard carbon electrodes (SSEs) are designed and utilized as anodes in Na‐ion batteries, demonstrating a high reversible capacity of 320 mAh g−1. Coating the SSEs with nanographite via plasma‐enhanced chemical vapor deposition limits the formation of solid electrolyte interphase, thereby improving the iCE to 92.5%.
Tien‐Nguyen‐Khoi Trinh   +5 more
wiley   +1 more source

Long‐Term Cycling Stability of Sodium/Sodium Ion Cells Probed by In Situ Solid‐State NMR Spectroscopy

open access: yesBatteries &Supercaps, EarlyView.
The suitability of 23Na in situ solid‐state nuclear magnetic resonance (NMR) spectroscopy for long‐term studies of sodium/sodium ion cells is tested. Using silicon carbonitride and hard carbon working electrodes, local structures are analyzed up to the point of capacity degradation and cell failure.
Sonja Egert   +7 more
wiley   +1 more source

Na5FeS4 as High‐Capacity Positive Electrode Active Material for All‐Solid‐State Sodium Batteries

open access: yesBatteries &Supercaps, EarlyView.
All‐solid‐state sodium cells using Na5FeS4, synthesize through a simple and scalable process using sodium polysulfides, as a positive electrode active material exhibit a high reversible capacity of 480 mAh g−¹, which is attributed to the sufficiently high ionic conductivity of the active material and the maintenance of the active material/solid ...
Yuta Doi   +9 more
wiley   +1 more source

Bismuth‐Integrated Nitrogen‐Doped Carbon Nanostructures Enabling Broad Electrolyte Compatibility for Mg‐Ion Batteries

open access: yesBatteries &Supercaps, EarlyView.
Bi nanoparticle (NP)‐integrated nitrogen‐doped carbon (Bi@nCN) is synthesized via a scalable one‐step carbothermal reduction. Bi NPs dispersed in the carbon matrix relieve stress during the two‐phase alloying reaction, resulting in the excellent electrochemical performance even in chloride‐free electrolytes, and highlighting Bi@nCN as a key enabler for
Woo Joo No   +6 more
wiley   +1 more source

Comparative Investigation of Three Mg Doping Strategies in NMC811 Cathodes for High‐Energy Density Lithium‐Ion Batteries

open access: yesBatteries &Supercaps, EarlyView.
Magnesium (Mg) doping is explored as a stabilization strategy for high‐capacity LiNi0.8Mn0.1Co0.1O2 (NMC811) cathodes. Three doping routes are compared, revealing that solid‐state lithiation delivers the best cycling stability. Operando X‐ray diffraction and electrochemical dilatometry link reduced cation mixing and lattice stabilization to improved ...
Anna Kobets   +8 more
wiley   +1 more source

Home - About - Disclaimer - Privacy