An ultra-high nickel cobalt-free cathode material toward high-energy and long-cycle stable Li-ion batteries: a single-crystal and surface high-entropy design strategy

Jianyao Ma; Xin Huang; Yang Tang; Shengyi Huang; Yuhang Wang; Bin Huang; Jianwen Yang; Yanwei Li; Meng Qin; Shunhua Xiao

doi:10.1039/d5ta01897h

January 1, 2025Journal of Materials Chemistry A

An ultra-high nickel cobalt-free cathode material toward high-energy and long-cycle stable Li-ion batteries: a single-crystal and surface high-entropy design strategy

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Key Points

Develop an ultra-high nickel, cobalt-free cathode material with enhanced cycling stability and structural integrity for high-energy lithium-ion batteries.
Synthesized single-crystal LiNi0.9Mn0.1O2 co-doped with magnesium, niobium, and aluminum (Mg/Nb/Al) to engineer a protective high-entropy surface layer.
Stabilized lattice oxygen and enhanced phase transition reversibility during electrochemical cycling.
Promoted the formation of a robust, hydrofluoric acid-resistant cathode electrolyte interphase layer to improve overall cycle life.

Implication

Experimental study demonstrates improved cycling stability in ultra-high nickel cobalt-free lithium-ion batteries, highlighting the utility of single-crystal and high-entropy surface design.

Abstract

We developed a Mg/Nb/Al co-doped single-crystal LiNi 0.9 Mn 0.1 O 2 with improved cycling stability. The high-entropy surface stabilizes oxygen, enhances phase transition reversibility, and builds a HF-resistant CEI.

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Cite This Study

Ma et al. (2025) studied this question.

synapsesocial.com/papers/6a82ce2468df11fa7b6d0678 https://doi.org/10.1039/d5ta01897h

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An ultra-high nickel cobalt-free cathode material toward high-energy and long-cycle stable Li-ion batteries: a single-crystal and surface high-entropy design strategy

Key Points

Implication

Abstract

Discussion

Cite This Study

An ultra-high nickel cobalt-free cathode material toward high-energy and long-cycle stable Li-ion batteries: a single-crystal and surface high-entropy design strategy

Key Points

Implication

Abstract

Discussion

Cite This Study

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