Manganese-rich NASICON-type materials have triggered widespread attention for developing advanced polyanionic cathodes, primarily driven by their abundant reserves and promising cycling performance with high operating voltages (~3.8 V for Mn2+/3+/4+, versus Na+/Na). However, the charge/discharge profiles exhibit significant voltage hysteresis, which leads to a limited reversible capacity, thereby preventing their application. Here, we demonstrate that the voltage hysteresis in manganese-rich NASICON-type cathodes (Na3MnTi(PO4)3) is closely related to the intrinsic anti-site defect (IASD), which forms during synthesis and is captured in our characterizations. Combining electrochemical analysis and spectroscopic techniques, we draw a comprehensive picture of sluggish Na+ diffusion behaviours in the IASD-affected structure during cycling, and rationalize the relationship of voltage hysteresis, phase separation and delayed charge compensation. Furthermore, a Mo-doping strategy is dev
This article explores optomechanical mass sensing, as opposed to conventional mass spectrometers, which classify analytes by measuring their mass-to-charge ratio.
/PRNewswire/ Researchers at Kanazawa University report in Nano Letters how high-speed atomic force microscopy leads to insights into processes relevant to.
Probing the structure of bagworm silk with scanning X-ray nanodiffraction esrf.fr - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from esrf.fr Daily Mail and Mail on Sunday newspapers.