Spherical Li1.26Fe0.22Mn0.52O2 cathode material assembled by molten salt – Spray granulation method and improved cycling performance for Li-ion batteries

Xu, Tao; Xing, Yiran; Hou, Chen; Yu, Lele; Zhao, Yujuan

doi:10.1016/j.jssc.2021.122237

Cited by 1 publication

(2 citation statements)

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“…Fe 3+ shows a similar electronic structure and has the same oxidation state as Co 3+ , which can help to minimize Ni/Li disordering by lowering the interlayer linear Ni 2+ –O 2– –Fe 3+ superexchange . It has been reported that the Fe–Mn-based cathode material is not only considerably cheaper and more ecologically friendly than other traditional cathode materials but also has a greater specific capacity due to large Fe and Mn reserves . It is greatly anticipated that it will be used as a cathode material.…”

Section: Introductionmentioning

confidence: 99%

“…23 It has been reported that the Fe−Mnbased cathode material is not only considerably cheaper and more ecologically friendly than other traditional cathode materials but also has a greater specific capacity due to large Fe and Mn reserves. 24 It is greatly anticipated that it will be used as a cathode material. However, because of its low intrinsic electrical conductivity and delayed lithium-ion diffusion, the Fe−Mn cathode material is not widely used.…”

Section: Introductionmentioning

confidence: 99%

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Manganese and Cobalt-Free Ultrahigh-Ni-Rich Single-Crystal Cathode for High-Performance Lithium Batteries

Saleem

Zhu

Majeed

et al. 2023

ACS Appl. Mater. Interfaces

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Current commercial nickel (Ni)-rich Mn, Co, and Al-containing cathodes are employed in high-energy-density lithium (Li) batteries all around the globe. The presence of Mn/Co in them brings out several problems, such as high toxicity, high cost, severe transition-metal dissolution, and quick surface degradation. Herein, a Mn/Co-free ultrahigh-Ni-rich single-crystal Li-Ni 0.94 Fe 0.05 Cu 0.01 O 2 (SCNFCu) cathode with acceptable electrochemical performance is benchmarked against a Mn/Co-containing cathode. Despite having a slightly lower discharge capacity, the SCNFCu cathode retaining 77% of its capacity across 600 deep cycles in full-cell outperforms comparable to a high-Ni single-crystal LiNi 0.9 Mn 0.05 Co 0.05 O 2 (SCNMC; 66%) cathode. It is shown that the stabilizing ions Fe/Cu in the SCNFCu cathode reduce structural disintegration, undesirable side reactions with the electrolyte, transition-metal dissolution, and active Li loss. This discovery provides a new extent for cathode material development for nextgeneration high-energy, Mn/Co-free Li batteries due to the compositional tuning flexibility and quick scalability of SCNFCu, which is comparable to the SCNMC cathode.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%