Calorimetric Studies on Chemically Delithiated LiNi0.4Mn0.4Co0.2O2: Investigation of Phase Transition, Gas Evolution and Enthalpy of Formation-Reference-Cited by-同舟云学术

Calorimetric Studies on Chemically Delithiated LiNi0.4Mn0.4Co0.2O2: Investigation of Phase Transition, Gas Evolution and Enthalpy of Formation

Published:2023-05-17 Issue:5 Volume:9 Page:275
ISSN:2313-0105
Container-title:Batteries
language:en
Short-container-title:Batteries

Author:

Zhao Wenjiao¹,Gebauer Julian²^ORCID,Bergfeldt Thomas²^ORCID,Rohde Magnus²^ORCID,Ziebert Carlos²^ORCID,Du Yong³^ORCID,Seifert Hans J.²

Affiliation:

1. Volkswagen AG, 38239 Salzgitter, Germany

2. Karlsruhe Institute of Technology, Institute of Applied Materials-Applied Materials Physics (IAM-AWP), 76344 Eggenstein-Leopoldshafen, Germany

3. State Key Lab of Powder Metallurgy, Central South University, Changsha 410083, China

Abstract

Li1.11(Ni0.4Mn0.4Co0.2)O2 powders were chemically delithiated by (NH4)2S2O8 oxidizer to obtain Lix(Ni0.4Mn0.4Co0.2)O2 powders. The thermal behavior of two delithiated specimens, Li0.76Ni0.41Mn0.42Co0.17O2.10 and Li0.48Ni0.38Mn0.46Co0.16O2.07, was studied compared to the pristine specimen. Phase transitions at elevated temperatures were investigated by simultaneous thermal analysis (STA) and the gas evolution accompanying the phase transitions was analyzed by mass spectroscopy and an oxygen detector. The enthalpy of two delithiated samples and a pristine specimen were measured by a high temperature drop solution calorimeter. Based on these results, the enthalpies of formation were calculated.

Funder

German Research Foundation

Helmholtz Association

Sino-German Center for Research Promotion

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Electrochemistry,Energy Engineering and Power Technology

Link

https://www.mdpi.com/2313-0105/9/5/275/pdf

Reference23 articles.

1. Safety issues in Lithium ion batteries: Materials and cell design;Wu;Front. Energy Res.,2019

2. A review of safety strategies of a Li ion battery;Chombo;J. Power Sources,2020

3. Review—Li-rich layered oxide cathodes for next-generation Li-ion batteries: Chances and challenges;Rozier;J. Electrochem. Soc.,2015

4. High-Nickel layered oxide cathodes for Lithium-based automotive batteries;Li;Nat. Energy,2020

5. Electrochemical characteristics of layered transition metal oxide cathode materials for lithium ion batteries: Surface, bulk behavior, and thermal properties;Tian;Acc. Chem. Res.,2018