Colloidal polypyrrole as binder for silicon anode in lithium ion batteries

Küçük Resim Yok

Tarih

2022

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Energy Storage

Erişim Hakkı

info:eu-repo/semantics/openAccess

Araştırma projeleri

Organizasyon Birimleri

Dergi sayısı

Özet

Silicon (Si)-based anodes have limited application in lithium ion batteries (LIBs) due to the loss of contact with current collector because of large volume change during lithiation and delithiation processes. In this study, pyrrole (Py) was polymerized chemically by cerium ammonium nitrate (CAN) and conductive colloidal polypyrrole (Col-PPy) was obtained in one step in N,N0 - dimethylformamide (DMF). To overcome problems during the volume change, Col-PPy was then used as polymeric binder with Si nanoparticle (SiNP) in Sianode and it called as “Col-PPy/SiNP.” In order to improve the cyclability and capacity of Si-anodes, Col-PPy solution was used also together with polyvinylidenefluoride (PVDF) and polyvinylpyrrolidone (PVP). These Si-anodes were further analyzed with cycle tests and combined cycle tests at different rates (C-rate) in half cells and scanning electron microscopy images of electrodes were taken before and after cycling. All results suggested that as an anode for LIB, Col-PPy/SiNP exhibited high reversible capacity (2617 mAh/g at C/10 [0.42 A/g]) and good cycling performance (reversible capacity of 1400 mAh/g after 189 cycles at C/3 [1.4 A/g]).

Açıklama

Anahtar Kelimeler

Colloidal polypyrrole, Lithium ion batteries, Silicon anode

Kaynak

Energy Storage

WoS Q Değeri

N/A

Scopus Q Değeri

Q3

Cilt

4

Sayı

4

Künye

Yayla, I.İ.A., Yuca, N., Sezer, E. and Ustamehmetoğlu, B. (2022). Colloidal polypyrrole as binder for silicon anode in lithium ion batteries. Energy Storage, 4(4).