Engineering commercial polycrystalline precursors to single crystal Ni-rich cathodes with outstanding long-cycle performance

Abstract

Single-crystal LiNi1-x-yCoxMnyO2 (NCM) are a promising cathode material featuring with improved structural integrity, suppressed particle cracking and enhanced capacity retention during cycling. Herein, well-informed single crystalline NCM cathode materials are...

Trapping High-Activity Water in Nature-Inspired Plant-Derived Separator to Realize Ultrastable Interfacial Chemistry of Zn Anode

“…The GF separator exhibits a characteristic broad peak centered at approximately 25°(attributed to amorphous SiO 2 ), which is in excellent agreement with previous findings (Figure 2b). 40 As shown in Figure 2c, the WRPF separator possesses a larger tensile strength of 2.25 MPa, which is 4.5 times that of the GF separator, revealing exceptional mechanical stability capable of enduring a specific strain and accommodating subsequent processing steps. Optimal mechanical properties are crucial for separators in ZIBs, as a separator with high strength and modulus effectively inhibits the growth of zinc dendrites, while insufficient mechanical properties make the separator vulnerable to penetration by zinc dendrites.…”

“…The XRD diffraction peaks observed at 14.7, 16.3, 22.5, and 34.1° in the WRPF separator can be attributed to the (101), (101̅), (002), and (040) crystalline planes of cellulose I, respectively. The GF separator exhibits a characteristic broad peak centered at approximately 25° (attributed to amorphous SiO 2 ), which is in excellent agreement with previous findings (Figure b) . As shown in Figure c, the WRPF separator possesses a larger tensile strength of 2.25 MPa, which is 4.5 times that of the GF separator, revealing exceptional mechanical stability capable of enduring a specific strain and accommodating subsequent processing steps.…”