Integrated structure design and synthesis of a pitaya-like SnO₂/N-doped carbon composite for high-rate lithium storage capability

Abstract

Tin dioxide (SnO2) with a high theoretical capacity of 1494 mAh g-1 has great potential to break through the capacity limitation of conventional graphite anode (372 mAh g-1) in lithium-ion...

Atomic Sn sites supported on N-doped porous carbon for accelerating the oxygen reduction reaction

“…2a. Notably, the binding energies of Sn 3d 3/2 and Sn 3d 5/2 for Sn–NC are higher than those for Sn foil but lower than those for SnO 2 , 20,29 suggesting the oxidized state of 0–+4 for the Sn species in Sn–NC. The high-resolution C 1s spectrum of Sn–NC can be deconvoluted into three peaks including CC at 284.3 eV, CN at 285.2 eV, and C–N at 287.6 eV, 20,30 Fig.…”

Electro-spun Sn nanoparticles encapsulated in N-doped carbon nanofibers as flexible integrated anodes for high-efficiency lithium-ion batteries

“…Therefore, the exploration of a new flexible integrated anode with superior capacity, rate performance, and cycle life has received widespread attention. Graphite, as the most normally used anode substance for commercial lithium-ion batteries, is restricted by its theoretical specific capacity (372 mAh g -1 ), making it challenging to enhance the energy density of LIBs [3] . Among the substitutes, transition metal Sn is considered the most desirable alternative for graphite anode because of its high theoretical capacity (994 mAh g -1 ), and wide source [4] .…”