Achieving Long Cycle Life and Single-Crystal of Li-rich Mn-based Cathodes by Reheating with Sintering Additives

Lithium-rich layered oxides, as one of the most potential cathode materials for lithium-ion batteries, still need crucial improvements in mechanical strength and cycle life. Herein, we present an effective strategy to improve the compacted density and cycle stability of Li-rich materials by adding t...

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Published in:Journal of physics. Conference series 2023-07, Vol.2539 (1), p.12040
Main Authors: He, Haocheng, Li, Hao, Mou, Lisha, Ou, Mei, Wang, Hua, Ren, Zhimin, Zhang, Xiangjun
Format: Article
Language:English
Subjects:
Additives
Cathodes
Density
Electrode materials
Heating
Lithium-ion batteries
Physics
Rechargeable batteries
Single crystals
Sintering
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container_title Journal of physics. Conference series
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creator He, Haocheng
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description Lithium-rich layered oxides, as one of the most potential cathode materials for lithium-ion batteries, still need crucial improvements in mechanical strength and cycle life. Herein, we present an effective strategy to improve the compacted density and cycle stability of Li-rich materials by adding the sintering additive (H 3 BO 3 , Li 2 WO 4 ) for reheating. After reheating with a complex additive of Li 2 WO 4 and H 3 BO 3 , the compacted density increased from 3.07 to 3.29, and micromorphology changed from spherical secondary agglomerate to dispersive single crystals with micrometer size. It was found that after reheating with Li 2 WO 4 , the sample exhibited a discharge capacity of 241.9 mAh g -1 with an improved ICE of 80.9 %, and cycle life extended to 658 cycles, increased by nearly 250 cycles. This work guides the industrialization of Li-rich cathodes.
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subjects Additives
Cathodes
Density
Electrode materials
Heating
Lithium-ion batteries
Physics
Rechargeable batteries
Single crystals
Sintering
title Achieving Long Cycle Life and Single-Crystal of Li-rich Mn-based Cathodes by Reheating with Sintering Additives
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