Recent breakthroughs and perspectives of high-energy layered oxide cathode materials for lithium ion batteries

Nickel (Ni)-rich layered oxides such as LiNi0.6Co0.2Mn0.2O2 (NCM622) represent one of the most promising candidates for the next-generation high-energy lithium-ion batteries (LIBs). However, the pristine Ni-rich cathode materials usually suffer...

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Effect of Different Composition on Voltage Attenuation of Li-Rich Cathode Material for Lithium-ion Batteries

10.20944/preprints201912.0139.v1 ◽

2019 ◽

Author(s):

Jun Liu ◽

Qiming Liu ◽

Huali Zhu ◽

Feng Lin ◽

Yan Ji ◽

...

Keyword(s):

Cathode Material ◽

Lithium Ion Batteries ◽

Cathode Materials ◽

Nickel Content ◽

Lithium Ion ◽

High Energy ◽

Commercial Application ◽

Layered Oxide ◽

Oxide Cathode ◽

Voltage Attenuation

Li-rich layered oxide cathode materials have become one of the most promising cathode materials for high-energy-density lithium-ion batteries owning to its high theoretical specific capacity, low cost, high operating voltage and environmental friendliness. Yet they suffer from severe capacity and voltage attenuation during prolong cycling, which blocks their commercial application. To clarify these causes, we synthesize 0.5Li2MnO3·0.5LiNi0.8Co0.1Mn0.1O2 (LL-811) with high-nickel-content cathode material by a solid-sate complexation method, and it manifests a lot slower capacity and voltage attenuation during prolong cycling compared to LL-111 and LL-523 cathode materials. The capacity retention at 1C after 100 cycles reaches to 87.5% and the voltage attenuation after 100 cycles is only 0.460 V. Combining X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscopy (TEM), it indicates that increasing the nickel content not only stabilizes the structure but also alleviates the attenuation of capacity and voltage. Therefore, it provides a new idea for designing of Li-rich layered oxide cathode materials that suppress voltage and capacity attenuation.

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Li- and Mn-rich layered oxide cathode materials for lithium-ion batteries: a review from fundamentals to research progress and applications

Molecular Systems Design & Engineering ◽

10.1039/c8me00025e ◽

2018 ◽

Vol 3 (5) ◽

pp. 748-803 ◽

Cited By ~ 46

Author(s):

Hongge Pan ◽

Shiming Zhang ◽

Jian Chen ◽

Mingxia Gao ◽

Yongfeng Liu ◽

...

Keyword(s):

Energy Density ◽

Lithium Ion Batteries ◽

Cathode Materials ◽

Lithium Ion ◽

High Energy ◽

High Energy Density ◽

Research Progress ◽

Layered Oxides ◽

Layered Oxide ◽

Oxide Cathode

Li- and Mn-rich layered oxides (LMRO) have drawn much attention for application as cathode materials for lithium-ion batteries due to their high-energy density of over 1000 W h kg−1.

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Effect of Different Composition on Voltage Attenuation of Li-Rich Cathode Material for Lithium-Ion Batteries

Materials ◽

10.3390/ma13010040 ◽

2019 ◽

Vol 13 (1) ◽

pp. 40 ◽

Cited By ~ 8

Author(s):

Jun Liu ◽

Qiming Liu ◽

Huali Zhu ◽

Feng Lin ◽

Yan Ji ◽

...

Keyword(s):

Cathode Material ◽

Lithium Ion Batteries ◽

Cathode Materials ◽

Nickel Content ◽

Lithium Ion ◽

Commercial Application ◽

Operating Voltage ◽

Layered Oxide ◽

Oxide Cathode ◽

Voltage Attenuation

Li-rich layered oxide cathode materials have become one of the most promising cathode materials for high specific energy lithium-ion batteries owning to its high theoretical specific capacity, low cost, high operating voltage and environmental friendliness. Yet they suffer from severe capacity and voltage attenuation during prolong cycling, which blocks their commercial application. To clarify these causes, we synthesize Li1.5Mn0.55Ni0.4Co0.05O2.5 (Li1.2Mn0.44Ni0.32Co0.04O2) with high-nickel-content cathode material by a solid-sate complexation method, and it manifests a lot slower capacity and voltage attenuation during prolong cycling compared to Li1.5Mn0.66Ni0.17Co0.17O2.5 (Li1.2Mn0.54Ni0.13Co0.13O2) and Li1.5Mn0.65Ni0.25Co0.1O2.5 (Li1.2Mn0.52Ni0.2Co0.08O2) cathode materials. The capacity retention at 1 C after 100 cycles reaches to 87.5% and the voltage attenuation after 100 cycles is only 0.460 V. Combining X-ray diffraction (XRD), scanning electron microscope (SEM), and transmission electron microscopy (TEM), it indicates that increasing the nickel content not only stabilizes the structure but also alleviates the attenuation of capacity and voltage. Therefore, it provides a new idea for designing of Li-rich layered oxide cathode materials that suppress voltage and capacity attenuation.

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