Facile synthesis of Bi₂Se₃/nitrogen-doped carbon dot nanoplates for aqueous zinc ion battery cathodes

Abstract

Bi2Se3 is a promising cathode material for aqueous zinc ion batteries (AZIBs), but its limited capacity and poor cycling stability deter its further use in the development of AZIBs.

Rapid Growth of Bi2Se3 Nanodots on MXene Nanosheets at Room Temperature for Promoting Sulfur Redox Kinetics

“…Bi 4f peaks at 163.3 (158.0) and 164.4 (159.1) eV were attributed to Bi–Se and Bi–O, respectively (Figure e) . Se 3d peaks at 54.4 and 53.4 eV belonged to Se 3d 3/2 and Se 3d 5/2 , respectively (Figure f) . The peak of 55.7 eV is attributed to the formation of Bi–Se bond .…”

“…49 Se 3d peaks at 54.4 and 53.4 eV belonged to Se 3d 3/2 and Se 3d 5/2 , respectively (Figure 3f). 50 The peak of 55.7 eV is attributed to the formation of Bi−Se bond. 50 Ti 2p peaks at 460.2 (466.2), 458.5 (464.2), 457.1 (462.9), 455.8 (461.4), and 455.0 (461.1) eV belonged to C−Ti−F x , Ti−O, Ti 3+ , Ti 2+ , and Ti−C in MXene, respectively (Figure 3g).…”

“…50 The peak of 55.7 eV is attributed to the formation of Bi−Se bond. 50 Ti 2p peaks at 460.2 (466.2), 458.5 (464.2), 457.1 (462.9), 455.8 (461.4), and 455.0 (461.1) eV belonged to C−Ti−F x , Ti−O, Ti 3+ , Ti 2+ , and Ti−C in MXene, respectively (Figure 3g). 51 C 1s peaks at 288.9, 286.…”

Te-Doped Bi2Se3@NC Nanocomposites for High-Performance Li-Ion Battery Anodes

“…The Bi 2 Se 3 @ rGO @ NC anode material was applied to sodium-ion batteries, showing a reversible initial specific capacity of 288.4 mA h g −1 and exceptional cycling stability at 50 mA g −1 , and maintaining a considerable capacity of 160.1 mA h g −1 over 300 cycles. Zhang et al [18] synthesized Bi 2 Se 3 /nitrogen-doped carbon dots (NCDs) using a simple solvent-thermal method, which contains abundant functional groups on the surface. These functional groups facilitate the contact between the aqueous electrolyte and the composites and effectively improve their electrical conductivity.…”