In:
Nanoscale, Royal Society of Chemistry (RSC), Vol. 15, No. 7 ( 2023), p. 3326-3336
Abstract:
Li-rich layered materials have attracted much attention for their large capacity ( 〉 250 mA h g −1 ) stemming from anion redox at high voltage. However, inherent problems, such as capacity decay and voltage decay/hysteresis during cycling, hinder their commercial progress. In this work, an oxygen vacancy-accompanied spinel interface layer is constructed by gas–solid reaction via NiCO 3 treatment at 650 °C, which reduces the asymmetry of anion redox and improves structural stability. Therefore, a 1 mol% NiCO 3 -modified sample powerfully reduces the voltage hysteresis (∼0.23 V) in the first cycle, simultaneously exhibiting an excellent discharge capacity of 275 mA h g −1 at 0.1 C with a capacity retention of 90% for 200 cycles at 1 C.
Type of Medium:
Online Resource
ISSN:
2040-3364
,
2040-3372
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2023
detail.hit.zdb_id:
2515664-0
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