A General Strategy for Antimony‐Based Alloy Nanocomposite Embedded in Swiss‐Cheese‐Like Nitrogen‐Doped Porous Carbon for Energy Storage

Abstract

Due to its suitable working voltage and high theoretical storage capacity, antimony is considered a promising negative electrode material for lithium‐ion batteries (LIBs) and has attracted widespread attention. The volume effect during cycling, however, will cause the antimony anode to undergo a severe structural collapse and a rapid decrease in capacity. Here, a general in situ self‐template‐assisted strategy is proposed for the rational design and preparation of a series of MSb (M = Ni, Co, or Fe) nanocomposites with MNC coordination, which are firmly anchored on Swiss‐cheese‐like nitrogen‐doped porous carbon as anodes for LIBs. The large interface pore network structure, the introduction of heteroatoms, and the formation of strong metalNC bonds effectively enhance their electronic conductivity and structural integrity, and provide abundant interfacial lithium storage. The experimental results have proved the high rate performance and excellent cycling stability of antimony‐based composite materials. Electrochemical kinetics studies have demonstrated that the increase in capacity during cycling is mainly controlled by the diffusion mechanism rather than the pseudocapacitance contribution. This facile strategy can provide a new pathway for low‐cost and high‐yield synthesis of Sb‐based composites with high performance, and is expected to be applied in other energy‐related fields such as sodium‐/potassium‐ion batteries or electrocatalysis.

Bismuth‐based Nanomaterials for Aqueous Alkaline Batteries: Recent Progress and Perspectives

“…[7,[11][12][13][14] However, with the widespread use of LIBs, hesitations regarding safety, economic cost and environmental concerns have arisen. [15][16][17][18][19][20][21] Moreover, the cost of LIBs has limited the large-scale grid storage. Several kinds of alternative battery technologies such as sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) have also been developed owing to their relatively abundant resources and low cost.…”

Recent Developments of Antimony-Based Anodes for Sodium- and Potassium-Ion Batteries

“…Coincidentally, another project on salt template-directed pore formation was reported by Yang and co-workers (Fig. 14c) [140], in which a series of Swiss-cheese-like nitrogen-doped porous carbon embedded with MSb (M = Ni, Co, or Fe) with M-N-C coordination (Fig. 14d) were generated.…”

“…Due to the similar reaction mechanism of PIBs and SIBs and the similar ionic radius of K + and Na + , many modification strategies for Sb-based materials (e.g., metal Sb, oxide, sulfide, selenide, and alloy) have been used to enhance their performance as the anodes of PIBs. However, the Sb-based materials have encountered obstacles as an anode in PIBs that are similar to those of SIBs; these obstacles can be overcome by several classic strategies, such as coupling carbon material, introducing heteroatom dopants, combining with other conductive substrates, synthesizing specific structures, and employing specific electrolytes and binders [131][132][133][134][135][136][137][138][139][140][141][142][143][144][145].…”

Embedding Cobalt Atom Clusters in CNT‐Wired MoS2 Tube‐in‐Tube Nanostructures with Enhanced Sulfur Immobilization and Catalyzation for Li–S Batteries

“…The development of future energy storage technology is driven by the increasing demand for electric vehicles, portable electronic devices, miniature electronic instruments, and large-scale electric grid energy storage. [1,2] Lithium-sulfur (Li-S) batteries have been a point of interest in energy storage devices due to their high specific energy density (≈2600 Wh kg −1 ), nontoxicity, natural abundance, and low cost of sulfur. [3][4][5] However, the development of Li-S batteries is still hampered by a few technological barriers including the incomplete utilization of sulfur electrocatalysts for LiPSs.…”