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The spinel Mn‐based cathodes with 3D Li+ diffusion channels, high voltage, and low‐cost show promise for developing high‐power lithium‐ion batteries (LIBs). But the disproportionation and Jahn–Teller distortion lead to structural degeneration and capacity decay, especially at high working temperatures. Herein, considering the merits of single crystals and orientation of exposed crystal planes, single‐crystal...
Carbonaceous materials are promising anodes for potassium‐ion batteries (PIBs). However, it is hard for large K ions (1.38 Å) to achieve long‐distance diffusion in pristine carbonaceous materials. In this work, the following are synthesized: S/N codoped carbon nanofiber aerogels (S/N‐CNFAs) with optimized electronic structure by S/N codoping, enhanced interlayer spacing by S doping, and a 3D interconnected...
In recent years, 2D materials are attracting increased attention because of their excellent properties. In this paper, new 2D carbon nitride (CN) organic materials are successfully prepared on the basis of the organic synthesis theory, and the thickness is about 1.5 nm. This new 2D CN organic material further strengthens the 2D materials family. Meanwhile, their synthetic mechanism is theoretically...
The urgent prerequisites of high energy‐density and superior electrochemical properties have been the main inspiration for the advancement of cathode materials in lithium‐ion batteries (LIBs) in the last two decades. Nickel‐rich layered transition‐metal oxides with large reversible capacity as well as high operating voltage are considered as the most promising candidate for next‐generation LIBs. Nonetheless,...
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