Heterogeneous structured pomegranate-like Bi@C nanospheres for high-performance sodium storage

Abstract

The optimized design of size effects and the interface effects can enhance the electron/Na-ion migration kinetics for energy-storage materials. Herein, small size pomegranate-like Bi@C nanospheres (PBCNSs) are synthesized via a...

Bimetallic Bi–Sn microspheres as high initial coulombic efficiency and long lifespan anodes for sodium-ion batteries

“…S7a, ESI†). This value is higher than the values of most of the reported alloying-type anodes 15,20,25,26 as well as μ-Bi (85.8%, Fig. S7b, ESI†) and μ-Sn (84.4%, Fig.…”

“…[11][12][13] In contrast, Bi exhibits excellent rate and cycle performances due to its unique layered structures, but its theoretical capacity is only 386 mA h g À1 . 14,15 Thus, it is highly desirable to combine the advantages of Sn (high theoretical capacity) and Bi (good cycling/rate performance). However, there are few related reports on bimetallic Bi-Sn for SIBs.…”

Multiscale-Designed Nanocomposite with a Fast Na+ Diffusion Channel for Ultra-High Rate Sodium-Ion Batteries

“…As shown in Figure S2, both TBCNs and BCNs have a weight loss of 26 wt %, which is related to the loss of C and decomposition of Bi 2 Se 3. , Based on the weight increase from the oxidation of Bi 2 Se 3 , the calculated contents of C and TiO 2 in TBCNs are 21.52 and 10.78%, respectively (the calculation method and explanation are provided in the Supporting Information). The Raman spectrum of TBCNs and BCNs displayed in Figure S3 also verified abundant defects in the nanocomposite due to amorphous TiO 2 and carbon lattice in the nanocomposite .…”

Bi–C monolayer as a promising 2D anode material for Li, Na, and K-ion batteries

“…Bismuth (Bi) has a high potential as an anode material due to its high theoretical gravimetric capacity (386 mA h g À1 ) and high volumetric capacity (3800 mA h L À1 ), and low reaction voltage, highlighting its ability as a beneficial anode for the practical application of electronic mobile device battery systems. [32][33][34] Inspired by the recently synthesized Bi@C nanospheres for Na storage, 35 we set out to create our own. This study raises an important question: can we build Bi-Cbased 2D metal ML?…”