Nanoporous atomic-thick two-dimensional materials with uniform pore size distribution and excellent mechanical strength have been considered as the ideal membranes for hydrogen purification. Here, our first-principle structure searches have unravelled...

The hybrid materials prepared by the controlled fumigation polymerization of pyrrole on the surface of activated carbon derived from carbon dots combined the stability of carbon materials, the wettability of...

Cobalt phosphate (Co3(PO4)2) has been recognized as a biomimetic superoxide anion (O2 •–) sensing material, but there is a great challenge to achieve high sensitivity due to its relatively poor conductivity. Here, a unique nanostructure is synthesized by using iodine nanospacer-impregnated reduced graphene oxide (I-rGO) layers to nest Co3(PO4)2. The role of iodine greatly enhances the density of nanoscale Co3(PO4)2 catalytic centers by separating reduced rGO layers while accelerating the interfacial electron transfer and followed transport through the directionally arranged conductive grapheme layers. The Co3(PO4)2/I-rGO sensor delivers a very good selectivity with a higher sensitivity, shorter response time, and wider linear range than that of Co3(PO4)2/rGO without the iodine nanospacers toward O2 •– detection, and also the reported Co3(PO4)2 nanorods work. Furthermore, the sensor was used to detect O2 •– generated by prostate cancer cells. This study holds promise for a high value nanoscale biomimetic sensor in practical clinical and bioresearch applications and also demonstrates a rational merit-hybrid nanocomposite design by offering critical contributions from individual components into the biomimetic sensing platform.

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Metal‐ion capacitors could merit advantages from both batteries and capacitors, but they need to overcome the severe restrictions from their sluggish reaction kinetics of the battery type electrode and low specific capacitance of capacitor type electrode for both high energy and power density. Herein, we use the Kirkendall effect for the first time to synthesize unique tubular hierarchical molybdenum dioxide with encapsulated nitrogen‐doped carbon sheets while in situ realizing phosphorus‐doping to create rich oxygen vacancies (P‐MoO2‐x@NP‐C) as a sodium‐ion electrode. Experimental and theoretical analysis confirm that the P‐doping introduced oxygen defects can partially convert the high‐bond‐energy Mo–O to low‐bond‐energy Mo–P, resulting in a low oxidation state of molybdenum for enhanced surface reactivity and rapid reaction kinetics. The as‐prepared P‐MoO2‐x@NP‐C as an ion‐battery electrode is further used to pair active N‐doped carbon nanosheet (N‐C‐A) electrode for Na‐ion hybrid capacitor, delivering excellent performance with an energy density of 140.3 Wh kg−1, a power density of 188.5 W kg−1 and long stable life in non‐aqueous solution, which ranks the best among all reported MoOx‐based hybrid capacitors. P‐MoO2‐x@NP‐C is also used to fabricate a zinc‐ion hybrid capacitor, also accomplishing a remarkable energy density of 43.8 Wh kg−1, a power density of 93.9 W kg−1, and a long stable life@2A g−1 of 32 000 cycles in aqueous solutions, solidly verifying its universal significance. This work not only demonstrates an innovative approach to synthesize high‐performance metal ion hybrid capacitor materials but also reveals certain scientific insights into electron transfer enhancement mechanisms.