Si–TiN alloy Li-ion battery anode materials prepared by reactive N2 gas milling

Cao, Simeng; Bennett, Craig; Wang, Yukun; Gracious, Shayne; Zhu, Min; Obrovac, M. N.

doi:10.1016/j.jpowsour.2019.227003

Cited by 16 publications

(37 citation statements)

References 26 publications

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“…(1) The conductive TiN shell provides a continuous path for charge transfer along the active reaction sites and forms a homogeneous nanostructure to reduce the electric disconnection among active Si grains during cycling. 35,36 (2) The void space reserved between the outer TiN shell and the inner Si core can effectively buffer the volumetric expansion and contraction of Si actives, thereby maintaining good electrical contact and preventing the disconnection of active Si particles from the Cu current collector.…”

Section: Resultsmentioning

confidence: 99%

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

Zhang¹,

Chen²,

Bian

et al. 2022

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

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

Zhang¹,

Chen²,

Bian

et al. 2022

RSC Adv.

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“…To be specific, there was a pronounced plateau at about 0.08 V in the first lithiation curve for the r-Si and it corresponded to a very sharp lithiation peak in the dQ/dV curve. Generally, it indicated a nucleation and growth process for the lithiation of Si [30] with a two-phase coexistence region between crystalline Si (cr-Si) and amorphous LixSi (0<x≤3.5) [31].…”

Section: ) Microstructure and Morphology Characterizationmentioning

confidence: 99%

Investigation to Synthesis and Electrochemistry of the Ternary Si-CuO-NiO System as Anode Materials in Lithium-ion Batteries via an Affordable Manufacturing High-Energy Ball-Milling Method

Zhang

Zheng

Lam

2022

Preprint

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NiO was introduced into Si-CuO alloys as anode materials in LIBs by an affordable manufacturing high-energy ball-milling method the first time. The study found the ball-milled Si-CuO-NiO composites could effectively suppress the formation of the Li3.75Si phase during the lithiation process. With increasing the proportion of NiO, there was obvious improvement on cycle stability and coulombic efficiency. As a comparison, the ball-milled material of Si-CuO (23.5%) with the same mass fraction of the metal oxide as Si-CuO-NiO (15%) was also synthesized but showed much worse electrochemical performance. In addition, the ball-milled Si-CuO-NiO (15%) also had a certain degree of thermal stability and when coating carbon layer at 800 ℃, the capacity retention could be ~ 92% after 100 cycles at 0.2C.

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“…One is to decrease size by controlling silicon morphology, including nanomaterials, nanospheres, nanowires, , nanofilms, nanotubes, mesoporous silicon, , and three-dimensional (3D) structures, − which reduce structural collapse and pulverization by preventing silicon from cracking. Another is to form composites by modifying various materials such as carbon, , graphene, MXene, − metals (Ag, Cu, Ti, and Sn), silicon suboxide, and conductive polymers . However, these only suppress the volume change of silicon without considering the heat effects during cycles, while the generated heat will cause volume change or side reactions to worsen its performance.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Electrochemical Performance and Safety of Silicon by a Negative Thermal Expansion Material of ZrW₂O₈

Jing

Wang

et al. 2021

ACS Appl. Mater. Interfaces

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Silicon (Si) faces big challenges in serious volume changes for applications in spite of its high theoretical capacity. Herein, a novel and facile method was proposed to decrease the volume change by simultaneously in situ absorbing the generated heat of only Si using a negative thermal expansion (NTE) material of ZrW 2 O 8 . The Si modified with 2 wt % of ZrW 2 O 8 exhibits excellent structural integrity, electrochemical performance, and safety under various conditions, especially at elevated temperatures. Its reversible capacities can remain 1187.2 mA h g −1 after 50 cycles and 643.8 mA h g −1 after 100 cycles at 2 A g −1 (∼199 and ∼190% higher than that of Si, respectively) at 25 °C. In addition, 930.6 mA h g −1 is maintained after 50 cycles at 60 °C (∼219% higher than that of Si). As current densities increase to 2 and 4 A g −1 , the values still remain 1389.4 and 757.5 mA h g −1 , respectively, much higher than that of Si. Furthermore, the strain of Si is reduced by 37.2% using ZrW 2 O 8 at 60 °C. Various products were analyzed, and the possible enhanced mechanism was discussed using multiple techniques. These findings exhibit significant potential for the improvement of energy materials using NTE materials by combining thermal effects and volume changes as well as the improved interface behavior.

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Si–TiN alloy Li-ion battery anode materials prepared by reactive N2 gas milling

Cited by 16 publications

References 26 publications

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

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

Investigation to Synthesis and Electrochemistry of the Ternary Si-CuO-NiO System as Anode Materials in Lithium-ion Batteries via an Affordable Manufacturing High-Energy Ball-Milling Method

Enhanced Electrochemical Performance and Safety of Silicon by a Negative Thermal Expansion Material of ZrW₂O₈

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Si–TiN alloy Li-ion battery anode materials prepared by reactive N2 gas milling

Cited by 16 publications

References 26 publications

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

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

Investigation to Synthesis and Electrochemistry of the Ternary Si-CuO-NiO System as Anode Materials in Lithium-ion Batteries via an Affordable Manufacturing High-Energy Ball-Milling Method

Enhanced Electrochemical Performance and Safety of Silicon by a Negative Thermal Expansion Material of ZrW2O8

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Enhanced Electrochemical Performance and Safety of Silicon by a Negative Thermal Expansion Material of ZrW₂O₈