Nanostructured Sn@C anode is synthesized by carbon coating of nanosized tin for Li-ion battery. The Sn detected by X-ray diffraction (XRD) is quantified over 40 wt% by thermogravimetric analysis. Transmission and scanning electron microscopy (SEM) show a carbon matrix holding nanometric Sn operating from 0.8 to 0.01 V versus Li+/Li with low resistance, as indicated by cyclic voltammetry and electrochemical impedance spectroscopy. The Sn@C performs with initial capacity ranging from 630 mAh g−1 at 200 mA g−1 to 311 mAh g−1 at 1200 mA g−1 that decreases after 25 cycles and stabilizes to values from 403 to 268 mAh g−1, respectively. High-voltage LiNi0.35Cu0.1Mn1.45Al0.1O4 cathode is achieved by coprecipitation and high-temperature treatment. XRD and SEM demonstrate the crystalline structure of the disordered spinel without impurities and homogeneous submicron morphology. Cu and Al substitution for Ni and Mn leads to excellent reversibility and low impedance, with electrochemical process evolving between 4.7 and 4.8 V versus Li+/Li. The cathode reveals a capacity of ≈110 mAh g−1 retained for 88% after 100 cycles at 0.6C rate. Sn@C and LiNi0.35Cu0.1Mn1.45Al0.1O4 are combined in a new Li-ion cell delivering 110 mAh g−1 at 4.2 V with practical energy of 165 Wh kg−1.

A Li-Ion Battery Using Nanostructured Sn@C Alloying Anode and High-Voltage LiNi0.35Cu0.1Mn1.45Al0.1O4 Spinel Cathode

Levchenko S.
Primo
;
Marangon V.
Penultimo
;
Hassoun J.
Ultimo
2022

Abstract

Nanostructured Sn@C anode is synthesized by carbon coating of nanosized tin for Li-ion battery. The Sn detected by X-ray diffraction (XRD) is quantified over 40 wt% by thermogravimetric analysis. Transmission and scanning electron microscopy (SEM) show a carbon matrix holding nanometric Sn operating from 0.8 to 0.01 V versus Li+/Li with low resistance, as indicated by cyclic voltammetry and electrochemical impedance spectroscopy. The Sn@C performs with initial capacity ranging from 630 mAh g−1 at 200 mA g−1 to 311 mAh g−1 at 1200 mA g−1 that decreases after 25 cycles and stabilizes to values from 403 to 268 mAh g−1, respectively. High-voltage LiNi0.35Cu0.1Mn1.45Al0.1O4 cathode is achieved by coprecipitation and high-temperature treatment. XRD and SEM demonstrate the crystalline structure of the disordered spinel without impurities and homogeneous submicron morphology. Cu and Al substitution for Ni and Mn leads to excellent reversibility and low impedance, with electrochemical process evolving between 4.7 and 4.8 V versus Li+/Li. The cathode reveals a capacity of ≈110 mAh g−1 retained for 88% after 100 cycles at 0.6C rate. Sn@C and LiNi0.35Cu0.1Mn1.45Al0.1O4 are combined in a new Li-ion cell delivering 110 mAh g−1 at 4.2 V with practical energy of 165 Wh kg−1.
2022
Levchenko, S.; Wei, S.; Marangon, V.; Hassoun, J.
File in questo prodotto:
File Dimensione Formato  
Energy Tech - 2022 - Levchenko - A Li‐Ion Battery Using Nanostructured Sn C Alloying Anode and High‐Voltage LiNi0 35Cu0.pdf

accesso aperto

Descrizione: Full text editoriale
Tipologia: Full text (versione editoriale)
Licenza: Creative commons
Dimensione 4.41 MB
Formato Adobe PDF
4.41 MB Adobe PDF Visualizza/Apri

I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2501758
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 5
  • ???jsp.display-item.citation.isi??? 4
social impact