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On account of the high‐cost of platinum, researchers are working to develop a new catalyst that is cheaper and has a catalytic effect equivalent to platinum. Herein, owing to the unique acetylenic bonds in graphdiyne, iron, nitrogen co‐doped graphdiyne (Fe‐N‐GDY) is a promising nonprecious metal catalyst, which has been developed with just a small amount of iron precursor with the plan to substitute it for Pt‐based catalysts. The as‐synthesized Fe‐N‐GDY composited catalyst shows excellent catalytic performance with the onset potential of 0.94 V versus reversible hydrogen electrode and limited current density of 5.4 mA cm−2. Moreover, it shows excellent resistance to methanol poisoning and stability in both acidic and alkaline electrolytes, which makes potentially applicable in the oxygen reduction reaction field. Doped graphdiyne: An efficient nonprecious metal electrocatalyst is synthesized by using novel graphdiyne (GDY) materials for the oxygen reduction reaction. Owing to the powerful synergistic effect between Fe, N, and GDY, the Fe‐N co‐doped GDY (Fe‐N‐GDY) catalyst has excellent catalytic activity in both alkaline and acidic media, comparable to Pt/C. Moreover, the stability and methanol tolerance of Fe‐N‐GDY are better than those of Pt/C. [ABSTRACT FROM AUTHOR]

Abstract: Boron‐graphdiyne (BGDY), which has a unique π‐conjugated structure comprising an sp‐hybridized carbon skeleton and evenlydistributed boron heteroatoms in a well‐organized 2D molecular plane, is prepared through a bottom‐up synthetic strategy. Excellent conductivity, a relatively low band gap and a packing mode of the planar BGDY are observed. Notably, the unusual bonding environment of the all sp‐carbon framework and the electron‐deficient boron centers generates affinity to metal atoms, and thus provides extra binding sites. Furthermore, the expanded molecule pores of the BGDY molecular plane can also facilitate the transfer of metal ions in the perpendicular direction. The practical effect of the all sp‐carbon structure and boron heteroatoms on the properties of BGDY are demonstrated in its performance as the anode in sodium‐ion batteries. [ABSTRACT FROM AUTHOR]

Abstract: Large‐area graphdiyne film is constructed by heat treatment, including thermally induced evaporation and a cross‐coupling reaction process. The growth mechanism is proposed based on the observation and characterization that the heating temperature plays an important role in the evaporation of oligomers and in triggering the thermal cross‐coupling reaction, whereas the heating duration mainly determines the execution of the thermal cross‐coupling reaction. By controlling the heat‐treatment process, a graphdiyne film with uniform morphology and good conductivity is obtained. The improved GDY film based electrodes deliver good interfacial contact and more lithium storage sites; thus leading to superior electrochemical performance. A reversible capacity of 901 mAh g−1 is achieved. Specifically, the electrodes exhibit excellent rate performance, with which a capacity of 430 mAh g−1 is maintained at a rate as high as 5 A g−1. These advantages mean that the uniform graphdiyne film is a good candidate for the fabrication of a flexible and high‐capacity electrode material. [ABSTRACT FROM AUTHOR]

The Cover Feature shows an efficient non‐precious‐metal electrocatalyst for oxygen reduction reaction (ORR). In their Communication, W. Y. Si et al. demonstrate that the Fe‐N co‐doped graphdiyne (Fe‐N‐GDY) performed excellent catalytic activity in both alkaline and acidic media, comparable to commercial Pt/C. Moreover, the stability and methanol tolerance of Fe‐N‐GDY are better than those of Pt/C. The powerful synergistic effect between Fe, N and GDY plays a critical role in improving the activity and stability of Fe‐N‐GDY. More information can be found in the Communication by W. Y. Si et al. on page 173 in Issue 1, 2019 (DOI: 10.1002/cssc.201802170). [ABSTRACT FROM AUTHOR]