Li 2.0 Ni 0.67 N: a promising negative electrode material for Li-ion batteries with a soft structural response - Archive ouverte HAL Access content directly
Journal Articles Inorganic Chemistry Year : 2017

Li 2.0 Ni 0.67 N: a promising negative electrode material for Li-ion batteries with a soft structural response

(1) , (1) , (2) , (1, 3) , (4) , (2) , (5) , (1)
1
2
3
4
5

Abstract

The layered lithium nitridonickelate Li2.0(1)Ni0.67(2)N have been investigated as negative electrode in the 0.02-1.25 V vs. Li + /Li potential window. Its structural and electrochemical properties are reported. Operando XRD experiments upon three successive cycles clearly demonstrate a single phase behavior in line with the discharge-charge profiles. The reversible breathing of the hexagonal structure, implying a supercell, is fully explained. The Ni 2+ /Ni + redox couple is involved and the electron transfer is combined with the reversible accommodation of Li + ions in the cationic vacancies. The structural response is fully reversible and minimal, with a maximal volume variation of 2%. As a consequence, a high capacity of 200 mAh g-1 at C/10 is obtained with an excellent capacity retention, close to 100% even after 100 cycles, which makes Li2.0(1)Ni0.67(2)N a promising negative electrode material for Li-ion batteries.
Fichier principal
Vignette du fichier
Berger-LiNiN_2017_V0.pdf (1.57 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

cea-01626781 , version 1 (31-10-2017)

Identifiers

Cite

Thomas Cavoué, Nicolas Emery, Nurzhan Umirov, Stéphane Bach, Pascal Berger, et al.. Li 2.0 Ni 0.67 N: a promising negative electrode material for Li-ion batteries with a soft structural response. Inorganic Chemistry, 2017, 56, pp.13815-13821. ⟨10.1021/acs.inorgchem.7b01903⟩. ⟨cea-01626781⟩
170 View
323 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More