A Stable Three‐Dimensional Porous Carbon as a High‐Performance Anode Material for Lithium, Sodium, and Potassium Ion Batteries

Abstract

Extensive efforts are devoted to the design of new carbon materials with improved specific capacity for metal ion batteries (MIBs). One of the effective strategies for such material design is to change the structural unit. Recently, tetracene‐based nanoribbons have been synthesized (Chem. Eur. J. 2019, 25, 12074), which can be used as a basic building block to design a 3D porous TC60 as demonstrated in this work. Based on first‐principles calculations, it is found that the 3D‐TC60 shows high dynamical and thermal stability. Furthermore, the 3D‐TC60 with its unique porosity and various adsorption sites can work as a high‐performance anode material for Li, Na, and K‐ion batteries with high specific capacity of 706, 706, 466 mAhg−1; low diffusion barrier of 0.25, 0.11, 0.08 eV; small volume change of 0.88, 1.96, 2.94%; and average voltage of 0.19, 0.24, 0.50 V, respectively. These intriguing findings suggest the promising prospect of tetracene based materials for battery technology.

Anion‐Vacancy Modified WSSe Nanosheets on 3D Cross‐Networked Porous Carbon Skeleton for Non‐Aqueous Sodium‐Based Dual‐Ion Storage

“…[ 7 ] Therefore, the development of high‐capacity and long‐life electrode materials for SIBs is of great significance for the application and progress of energy storage systems. [ 8 ] It is worth mentioning that the sodium‐based dual‐ion battery (SDIB) has become a kind of sodium‐ion energy storage device with wide application prospects due to its use of relatively inexpensive expanded graphite (EG) as cathode material and its high discharge capacity and excellent rate stability. [ 9 ] Compared with SIBs, SDIBs have many advantages: 1) SDIBs have a very high operating voltage (>4 V), which shows a high energy density and a great application potential; 2) Compared with the traditional sodium metal or sodium‐containing compound cathode materials for SIBs, the cathode material for SDIBs is usually graphite with relatively low price, which reduces the production cost of batteries; 3) Unique charge storage mechanism‐cathode and anode can simultaneously store and release ions.…”