Germanium‐Carbdiyne: A 3D Well‐Defined sp‐Hybridized Carbon‐Based Material with Superhigh Li Storage Property

Abstract

Carbyne delivers various excellent properties for the existence of the larger number of sp-hybridized carbon atoms. Here, a 3D well-defined porous carbon material germanium-carbdiyne (Ge-CDY) which is comprised of only sp-hybridized carbon atoms bridging by Ge atoms has been developed and investigated. The unique diamond-like structure constructed by linear butadiyne bonds and sp 3 -hybridized Ge atoms ensures the stability of Ge-CDY. The large percentage of conjugated alkyne bonds composed of sp-C guarantees the good conductivity and the low band gap, which were further confirmed experimentally and theoretically, endowing Ge-CDY with the potential in electrochemical applications. The well-defined 3D carbon skeleton of Ge-CDY provides abundant uniform nanopores, which is suitable for metal ions storage and diffusion. Further half-cell evaluation also demonstrated Ge-CDY exhibited an excellent performance in lithium storage. All those indicating sp-hybridized carbon-based materials can exhibit great potential to possess excellent properties and be applied in the field of energy, electronic, and so on.

Thermal stress damage mechanism in single-crystal germanium caused by 1080 nm laser irradiation

“…As an important substrate and infrared window material, single-crystal germanium has important applications in photodetectors, infrared systems, solar cells and other fields. [1][2][3] With the development of laser processing technology, the use of lasers for punching, slotting and scribing germanium has also become a reality. [4][5][6][7][8] Compared with millisecond lasers, short-pulse lasers such as femtosecond and picosecond lasers have superior processing quality.…”

Synthesis of Crystalline Phosphine-Graphdiyne with Self-Adaptive p−π Conjugation

“…can tune the electronic properties and surface polarity of all-carbon materials, thereby increasing their chemical activity . Heteroatoms (B, Si, and Ge) acting as nodes in a two- or three-dimensional GDY family of materials have been demonstrated to precisely control their physical and chemical characteristics. Very recently, three-dimensional porous phosphorus­(V)-graphdiyne has also been theoretically predicted as an anode material for potassium-ion and calcium-ion batteries .…”

A nitrogen-rich graphdiyne containing hexaazatrinaphthylene for high-performance lithium-ion batteries

“…It is well-known that nitrogen, halogen (F and Cl), Ge, and boron-doped GDYs have been successfully prepared by Li, Huang, and co-workers through this strategy and have already exhibited strong invertible capacity and highly steady cycling properties in Li-ion storage. 25–27…”