Biomass-Derived Stress-Regulating Additives for Microsilicon Anodes in Lithium-Ion Batteries

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F25%3A10258401" target="_blank" >RIV/61989100:27640/25:10258401 - isvavai.cz</a>

Výsledek na webu

<a href="https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/batt.202500185?getft_integrator=scopus&src=getftr&utm_source=scopus" target="_blank" >https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/batt.202500185?getft_integrator=scopus&src=getftr&utm_source=scopus</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/batt.202500185" target="_blank" >10.1002/batt.202500185</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Biomass-Derived Stress-Regulating Additives for Microsilicon Anodes in Lithium-Ion Batteries

Popis výsledku v původním jazyce

Microsilicon (mu Si) anode, with an ultrahigh capacity of 3579 mAh g-1, presents less interfacial side reactions and lower production costs compared to nanosilicon, making it a promising candidate for lithium-ion batteries. However, the severe local stress produced upon repeated lithium insertion and extraction causes structural deterioration, significantly reducing the cycling stability of mu Si anodes. Here, biomass-derived carbon microtubes are introduced into mu Si electrodes as elasticity mediators to alleviate the stress generated during electrode cycling. After carbonization at a moderate temperature of 370 degrees C, the carbon tube walls retain some organic ingredients and exhibit impressive elasticity and resilience, which can effectively alleviate the volume expansion of mu Si particles and prevent pulverization of the electrode. In addition, the large inner diameter of the carbon tube provides additional space to compensate for the volume expansion of microsized silicon. The mu Si anode with carbon microtubes additives delivers an enhanced capacity of 1047 mAh g-1 after 200 cycles at a high current density of 2 A g-1. These results indicate that carbon microtubes are efficient stress-regulating additives for mu Si anodes, and further research may extend their application to other high-capacity alloy anodes, such as SiOx, phosphorus-based, and tin-based anodes.

Název v anglickém jazyce

Biomass-Derived Stress-Regulating Additives for Microsilicon Anodes in Lithium-Ion Batteries

Popis výsledku anglicky

Microsilicon (mu Si) anode, with an ultrahigh capacity of 3579 mAh g-1, presents less interfacial side reactions and lower production costs compared to nanosilicon, making it a promising candidate for lithium-ion batteries. However, the severe local stress produced upon repeated lithium insertion and extraction causes structural deterioration, significantly reducing the cycling stability of mu Si anodes. Here, biomass-derived carbon microtubes are introduced into mu Si electrodes as elasticity mediators to alleviate the stress generated during electrode cycling. After carbonization at a moderate temperature of 370 degrees C, the carbon tube walls retain some organic ingredients and exhibit impressive elasticity and resilience, which can effectively alleviate the volume expansion of mu Si particles and prevent pulverization of the electrode. In addition, the large inner diameter of the carbon tube provides additional space to compensate for the volume expansion of microsized silicon. The mu Si anode with carbon microtubes additives delivers an enhanced capacity of 1047 mAh g-1 after 200 cycles at a high current density of 2 A g-1. These results indicate that carbon microtubes are efficient stress-regulating additives for mu Si anodes, and further research may extend their application to other high-capacity alloy anodes, such as SiOx, phosphorus-based, and tin-based anodes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20500 - Materials engineering

Projekt

—

Návaznosti

O - Projekt operacniho programu

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Batteries &amp; Supercaps

ISSN

2566-6223

e-ISSN

2566-6223

Svazek periodika

8

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

9

Strana od-do

"nestrankovano"

Kód UT WoS článku

001466630600001

EID výsledku v databázi Scopus

2-s2.0-105002605814