Title: LiNi_0.8Fe_0.1Al_0.1O₂ as a Cobalt-Free Cathode Material with High Capacity and High Capability for Lithium-Ion Batteries

Abstract

Obtaining cathode materials with high capacity and cycle stability is one of the main challenges regarding the success of electric vehicle technologies. However, most of the widely used materials with these properties involve the use of toxic and expensive cobalt as the active material. To overcome this challenge, this work proposes a novel cobalt-free cathode material, synthesized for the first time using a solid-state reaction, whose general formula is LiNi_0.8Fe_0.1Al_0.1O₂ (NFA). This class of materials offers high capacity and reduces the battery costs by removing cobalt, without jeopardizing the structural stability and safety of the NFAs. The morphology and the structural properties of the obtained NFA cathode material were characterized using different techniques, e.g., scanning electronic microscopy, X-ray diffraction, X-ray fluorescence, and infrared and Raman spectroscopies. The electrochemical activity and diffusivity of the Li-ion during lithium removal and its insertion into the bulk of the NFA cathode demonstrated high-yield specific capacities of ≈180 mAh g^–1 at 0.1C, along with a reasonable rate capability and cycling stability, with a capacity retention of ≈99.6% after 100 charge/discharge cycles at a rate of C/2, and whose operando X-ray diffraction experiments have been used to study the crystallographic transitions during the lithiation–delithiation reaction.

Authors:

Elmaataouy, Elhoucine  ^[1];

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Chari, Abdelwahed ^[1]; El Bendali, Ayoub ^[1]; Tayoury, Marwa ^[1]; Amine, Rachid ^[2]; Aqil, Mohamed ^[1]; Xu, GuiLiang ^[2]; Liu, Tongchao ^[2]; Alami, Jones ^[1]; Dahbi, Mouad ^[1]

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+ Show Author Affiliations

1. Mohammed VI Polytechnic University, Ben Guerir (Morocco)
2. Argonne National Lab. (ANL), Argonne, IL (United States)

Publication Date:

Wed Dec 28 00:00:00 EST 2022

Research Org.:

Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Org.:

USDOE; Office Cherifien des Phosphates Group (OCP); Mohammed VI Polytechnic University

OSTI Identifier:

1971115

Grant/Contract Number:  

AC02-06CH11357

Resource Type:

Accepted Manuscript

Journal Name:

Batteries

Additional Journal Information:

Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2313-0105

Publisher:

MDPI

Country of Publication:

United States

Language:

English

Subject:

25 ENERGY STORAGE; lithium-ion battery; cobalt-free cathode material (NFA); nickel-rich layered oxide; solid-state reaction method; rate performance