Yolk–shell-structured Si@TiN nanoparticles for high-performance lithium-ion batteries

Abstract

Si@TiN composites show excellent electrochemical properties and suppressed volume expansion compared with pure silicon nanoparticles (Si NPs).

Titanium nitride (TiN) as a promising alternative to plasmonic metals: a comprehensive review of synthesis and applications

“…In a different study, Zhang et al attempted to enhance the performance of Si anodes in LIBs. 188 They proposed a novel approach where Si nanoparticles are coated with TiN in a yolk-shell structure, addressing volume expansion issues and enhancing the performance of Si anodes in LIBs. The TiN coating accommodates volume expansion, promotes stable solid electrolyte interphase (SEI) formation, and ensures efficient charge transfer.…”

Structural Control and Optimization Schemes of Silicon‐Based Anode Materials

“…Titanium nitride (TiN) was first proposed by Zhang as the outer layer in the yolk–shell structure. [ 66 ] The Si@TiN material inherits the volume change buffering properties commonly found in yolk–shell structures. In particular, TiN has a catalytic effect on the generation of stable SEI films; [ 67 ] its excellent electrical conductivity and high mechanical modulus increase the Li + transport rate and avoid irreversible damage to the SEI film during the lithium insertion/extraction process.…”

A Brief Overview of Silicon Nanoparticles as Anode Material: A Transition from Lithium‐Ion to Sodium‐Ion Batteries

“…The excellent performance of such hollow structure's bears witness to their effectiveness in buffering the volume expansion of bare silicon. More recently, Zhang et al [64] used titanium nitride (TiN) as a coating layer (Figure 3a) to develop a yolk-shell-like Si@TiN nanocomposite (Figure 2e,f). Their proposed composite exhibited a re-versible capacity of 2047 mAhg −1 at 1 Ag −1 after 180 cycles and a remarkable discharge capacity of 903 mAhg −1 at high current density of 12 Ag −1 (Figure 3b-d).…”

“…Reproduced under terms of the CC‐BY‐NC 3.0 license. [ 64 ] Copyright 2022, Royal Society of Chemistry. b) The first and second galvanostatic charge/discharge profile, c) cycling performance at a current density of 1 Ag −1 , and d) rate performance of the Si‐NPs and Si@TiN samples.…”

“…e,f) STEM image of Si@TiN. Reprinted under terms of the CC-BY-NC 3.0 license [64]. Copyright 2022, Royal Society of Chemistry.…”