An explosion approach was developed for efficiently preparing graphdiynes (GDYs) at 120 °C in air without any metal catalyst. The GDYs show great superiority in terms of thermal stability, conductivity (20 S m) and surface area (up to 1150 m g), and can be applied as promising anodes for storing lithium/sodium ions.

We have used a scalable and inexpensive method to prepare a catalyst comprising graphdiyne nanosheet-supported cobalt nanoparticles wrapped by N-doped carbon (CoNC/GD); this unprecedentedly durable electrocatalyst mediated the hydrogen evolution reaction (HER) with highly catalytic activity over all values of pH. The durability of the CoNC/GD structure was evidenced by the catalytic performance being preserved over 36 000, 38 000, and 9000 cycles under basic, acidic, and neutral conditions, respectively-behavior superior to that of commercial Pt/C (10 wt %) under respective conditions. Such long-term durability has rarely been reported previously for HER catalysts. In addition, this electrode displayed excellent catalytic activity because the improved physical/chemical properties facilitated electron transfer in the composite. The combination of high durability and high activity at all values of pH for this nonprecious metal catalyst suggests great suitability for practical water splitting.

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Although several sponge-like sorbents have been developed to treat oil spills and chemical leakages, under harsh conditions (e.g., strong acid or alkali; oils on the sea) their efficiencies can be rather limited. Herein, we provide a graphdiyne sponge that is capable of collecting oil pollution effectively. This graphdiyne sponge exhibits excellent adsorption capacity (up to 160 times its own weight), robust stability (even when immersed in strong acid and alkali for 7 days), and remarkable recyclability (up to 100 times). These features suggest that this new adsorbent material might find applicability in the cleanup of oil spills and many organic pollutants under realistic conditions.

Microwave‐invisible devices are emerging as a valuable technology in various applications, including soft robotics, shape‐morphing structures, and textural camouflages, especially in electronic countermeasures. Unfortunately, conventional microwave‐absorbing metastructures and bulk absorbers are stretching confined, limiting their application in deformable or special‐shaped targets. To overcome such limitations, a conceptually novel soft–rigid‐connection strategy, inspired by the pangolin, is proposed. Pangolin‐inspired metascale (PIMS), which is a kind of stretchable metamaterial consisting of an electromagnetic dissipative scale (EMD‐scale) and elastomer, is rationally designed. Such a device exhibits robust microwave‐absorbing capacity under the interference of 50% stretching. Besides, profiting from the covering effect and size‐confined effect of EMD‐scale, the out‐of‐plane indentation failure force of PIMS is at least 5 times larger than conventional device. As a proof of concept, the proposed device is conformally pasted on nondevelopable surfaces. For a spherical dome surface, the maximum radar cross‐section (RCS) reduction of PIMS is 6.3 dB larger than that of a conventional device, while for a saddle surface, the bandwidth of 10 dB RCS reduction exhibits an increase of 83%. In short, this work provides a conceptually novel platform to develop stretchable, nondevelopable surface conformable functional devices.

Designing materials and architectures for improving the performance of rechargeable aqueous Zn-MnO 2 battery has gained extensive interest. The main challenge is to retain high capacity, superior rate performance capability, and long-term stability capacity. This paper describes how a graphdiyne oxide (GDYO) membrane can endow Zn-MnO 2 batteries with high capacity, high rate capability, and long-term stability. The specific capacity of the modified battery reaches as high as 300 mA h g −1 at a current density of 308 mA g −1 over 50 cycles. Even at a high current density of 3080 mA g −1 , this Zn-MnO 2 battery exhibits a capacity of 100 mA h g −1 over 2000 cycles. Moreover, the effect of the GDYO membrane and the reaction mechanism is elucidated. The GDYO membrane allows the reversible stripping/plating of zinc ions to maintain a Coulombic efficiency of ≈100% for 800 h. Therefore, it is believed that the GDYO membrane ensures well-aligned ion transport and, thus, stabilizes the electrodes. This feasible approach toward Zn-MnO 2 batteries will open up alternative pathways for fabricating other high-performance Zn-ion batteries.

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