23:T47a,Aqueous zinc-ion batteries (ZIBs) have gained wide attention for their low cost, high safety, and environmental friendliness in recent years. β-MnO₂, a potential cathode material for ZIBs, has been restricted by its small channels for efficient charge storage. Herein, β-MnO₂ nanorods with oxygen vacancies are fabricated by a K⁺-doping strategy to improve the performance of ZIBs. The assembled batteries exhibit a capacity of 468 mAh g^-1, a power density of 2605 W kg^-1, and an energy density of 179 Wh kg^-1, which outperforms most reported ZIBs. Such a performance is owing to the synergistic combination of the oxygen vacancies in β-MnO₂ and concurrent deposition of ε-MnO₂ from Mn²⁺ in the electrolyte. Furthermore, superior cycling stability with negligible capacity decay in these batteries is demonstrated over 1000 cycles at a high current of 2 A g^-1. This study reveals the importance of oxygen vacancies and Mn²⁺ deposition effect in understanding the mechanism of charge storage in MnO₂-based ZIBs.24:T554,Abstract Understanding the effect of short channels on the performance of field‐effect transistors (FETs) from emerging low‐dimensional semiconductors is crucial to estimate their suitability in high‐density integrated circuits. To this end, intricate and costly equipment capable of nanoscale photolithography or e‐beam lithography is usually required to fabricate FETs with shrinking channel lengths. Here, the authors propose an economical suspended nanofiber lithography technique with short‐channel processing capability, and compatibility with modern semiconductor foundries. By combining the merits of the near‐field electrohydrodynamic printing of nanofibers and microscale photolithographic process, the authors successfully fabricate short channels with lengths as small as 48 nm via masks of suspended nanofibers, whose diameters are easily tuned by adjusting the printing conditions. This technique is further applied for exploring the performance of short‐channel FETs using semiconductors such as single‐walled carbon nanotubes or electrochemically‐exfoliated MoS 2 . Their performance is comparable to those made from more demanding lithography methods. This economical nanofabrication technique is promising to be applied on a variety of semiconductors for highly integrated fabrication of submicron short‐channel device arrays.25:T612,

#	Concept	H-Index	Publications	Citations
1	Engineering	2	2	44
2	Applied Physics	2	2	44
3	Electrical Engineering	2	2	44
4	Materials Science	2	2	44
5	Electronic Devices	1	1	13

	Year	Citations

About

Top Concepts