A scalable ternary SnO₂–Co–C composite as a high initial coulombic efficiency, large capacity and long lifetime anode for lithium ion batteries

Abstract

A new ternary SnO2–Co–C composite has been synthesized by facile and scalable ball milling, which demonstrates a high initial coulombic efficiency (ICE, with average of 80.8%), high reversible specific capacity and a long lifetime (610 mA h g−1 after 1000 cycles at 2 A g−1).

Tailoring the Charge/Discharge Potentials and Electrochemical Performance of SnO2 Lithium‐Ion Anodes by Transition Metal Co‐Doping

“…These alternative anodes combine both charge storage mechanisms in one single material. One representative CAM, with theoretical capacities of almost 1500 mAh g −1 , is transition metal doped tin oxide, for which the choice of the incorporated transition metal (and its redox potential) plays a key role for achieving high energy density and long‐term stable cycling …”

“…One representative CAM, with theoretical capacities of almost 1500 mAh g À 1 , is transition metal doped tin oxide, [12][13][14][15][16][17] for which the choice of the incorporated transition metal (and its redox potential) plays a key role for achieving high energy density and long-term stable cycling. [16][17][18][19] Herein, we have developed electroactive TM co-doped SnO 2 to achieve enhanced electrochemical performance. The continuous hydrothermal flow synthesis (CHFS) method [20] was chosen as a reproducible and scalable process for the production of co-doped tin oxide nanoparticles.…”

SnO2 as Advanced Anode of Alkali‐Ion Batteries: Inhibiting Sn Coarsening by Crafting Robust Physical Barriers, Void Boundaries, and Heterophase Interfaces for Superior Electrochemical Reaction Reversibility

“…In addition to introducing metal ions in SnO 2 (i.e., stannates and M x + ‐doped SnO 2 ), hybrids of transition metal (or M/Sn alloy) NPs and SnO 2 can also be used to enhance reaction reversibility by introducing abundant heterophase interfaces in cycled electrodes …”

“…The capacities and cycle numbers of SnO 2 ‐based materials as anodes for LIBs reported in the recent literature as listed in Table …”

Two-dimensional SnO2 anchored biomass-derived carbon nanosheet anode for high-performance Li-ion capacitors

“…However, like most transition metal oxides, SnO 2 has poor conductivity and suffers from dramatic volume change during charge/discharge process, easy pulverization and agglomeration, which directly affects its cycling performance. [22][23][24][25] One of the common strategies to tackle these problems is to composite SnO 2 with conductive nano-materials, including carbon layer, 26,27 carbon nanotubes (CNTs) 28,29 and graphene 30,31 etc. For example, Cheng and coworkers dispersed SnO 2 quantum dots (z5 nm) in a nitrogendoped porous carbon matrix, the carbon matrix was used as a protective medium to stabilize structural changes.…”