Bismuth oxide: a new lithium-ion battery anode

Abstract

Bismuth oxide directly grown on nickel foam (p-Bi2O3/Ni) was prepared by a facile polymer-assisted solution approach and was used directly as a lithium-ion battery anode for the first time. The Bi2O3 particles were covered with thin carbon layers, forming network-like sheets on the surface of the Ni foam. The binder-free p-Bi2O3/Ni shows superior electrochemical properties with a capacity of 668 mAh/g at a current density of 800 mA/g, which is much higher than that of commercial Bi2O3 powder (c-Bi2O3) and Bi2O3 powder prepared by the polymer-assisted solution method (p-Bi2O3). The good performance of p-Bi2O3/Ni can be attributed to higher volumetric utilization efficiency, better connection of active materials to the current collector, and shorter lithium ion diffusion path.

Engineering Bi2O3-Bi2S3 heterostructure for superior lithium storage

“…At a rate of 60 mA g −1 , the initial discharge and charge capacities of BO-BS are 1257 and 1052 mAh g −1 , respectively. The Coulombic efficiency of 83.7% surpasses those for bismuth based electrodes (60–70%, Figure S3)5678 and is even comparable to that for carbonaceous insertion anodes29. Such a high efficiency may be closely related to strong interaction between bismuth oxide and sulfide in the heterostructure.…”

“…The Coulombic efficiency further increases to 95% during the following cycles, while the capacity stabilizes at ~1072 mAh g −1 . Such a capacity exceeds the theoretical value of the BO-BS heterostructure (658 mAh g −1 )8, which could be explained by taking the large surface area and rich porosity into consideration28.…”

“…By tuning the structure, surface, and compositing, researchers could develop high-performance Bi 2 S 3 materials567. However, few works have been focused on the oxide counterpart Bi 2 O 3 , although the oxide possesses a higher theoretical capacity8.…”

“…Recently, Luo et al . revisited Bi 2 O 3 anode by directly growing Bi 2 O 3 nanoparticles on nickel foam8. The resulting Bi 2 O 3 /Ni exhibited impressive Li-storage reversibility, retaining 782 mAh g −1 over 40 cycles at 100 mA g −1 , and affording 668 mAh g −1 at a higher rate of 800 mA g −1 .…”

Studying Impact of Different Precipitating Agents on Crystal Structure, Morphology and Photocatalytic Activity of Bismuth Oxide

“…a-Bi2O3, b-Bi2O3, g-Bi2O3, d-Bi2O3, e-Bi2O3, and w-Bi2O3 [1,2]. The excellent optical and electrical properties like high refractive index, high dielectric permittivity and high oxygen conductivity make this material a suitable contender for various applications such as solid electrolyte fuel cells (SEFC) [3], lighting source [4], solid battery [5], photocatalyst [6], and gas sensor [7].…”