A novel strategy to significantly enhance the initial voltage and suppress voltage fading of a Li- and Mn-rich layered oxide cathode material for lithium-ion batteries

2018 ◽  
Vol 6 (8) ◽  
pp. 3610-3624 ◽  
Author(s):  
Shiming Zhang ◽  
Jian Chen ◽  
Tian Tang ◽  
Yinzhu Jiang ◽  
Gairong Chen ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Composite Cathode ◽  
Surface Phase ◽  
Layered Oxide ◽  
Initial Voltage ◽  
Oxide Cathode ◽  
Novel Strategy

A Li[Li0.2Ni0.13Co0.13Mn0.54]O2–xLiNiO2 composite cathode with a Ni-rich bulk phase and in situ precipitated Ni-rich spinel-like surface phase has been built to enhance the initial voltage and suppress voltage fading during cycling.

A Novel Strategy to Suppress Capacity and Voltage Fading of Li‐ and Mn‐Rich Layered Oxide Cathode Material for Lithium‐Ion Batteries

2016 ◽  
Vol 7 (6) ◽  
pp. 1601066 ◽  
Author(s):  
Shiming Zhang ◽  
Haitao Gu ◽  
Hongge Pan ◽  
Suhui Yang ◽  
Wubin Du ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Layered Oxide ◽  
Oxide Cathode ◽  
Novel Strategy

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

Materials ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 40 ◽  
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.

Site-Selective In Situ Electrochemical Doping for Mn-Rich Layered Oxide Cathode Materials in Lithium-Ion Batteries

2017 ◽  
Vol 8 (11) ◽  
pp. 1702514 ◽  
Author(s):  
Aram Choi ◽  
Jungwoo Lim ◽  
Hyung-Jin Kim ◽  
Sung Chul Jung ◽  
Hyung-Woo Lim ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Lithium Ion ◽  
Layered Oxide ◽  
Electrochemical Doping ◽  
Oxide Cathode ◽  
Site Selective

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

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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