Dual-Site Doping Strategy for Enhancing the Structural Stability of Lithium-Rich Layered Oxides

Regulating Anion Redox and Cation Migration to Enhance the Structural Stability of Li-Rich Layered Oxides

ACS Applied Materials & Interfaces ◽

10.1021/acsami.1c01351 ◽

2021 ◽

Author(s):

Tianshuo Wang ◽

Chunxiao Zhang ◽

Shuwei Li ◽

Xi Shen ◽

Liangjun Zhou ◽

...

Keyword(s):

Structural Stability ◽

Layered Oxides ◽

Cation Migration

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Suppressing the voltage decay of low-cost P2-type iron-based cathode materials for sodium-ion batteries

Journal of Materials Chemistry A ◽

10.1039/c8ta07933a ◽

2018 ◽

Vol 6 (42) ◽

pp. 20795-20803 ◽

Cited By ~ 8

Author(s):

Shuyin Xu ◽

Jinpeng Wu ◽

Enyuan Hu ◽

Qinghao Li ◽

Jienan Zhang ◽

...

Keyword(s):

Structural Stability ◽

Cathode Materials ◽

Low Cost ◽

Sodium Ion ◽

Sodium Ion Batteries ◽

Layered Oxides ◽

Cu Doping ◽

Voltage Decay ◽

Iron Based

We demonstrate the voltage decay in Fe based layered oxides comes from a dynamic origin. With excess Cu doping, Fe migration can be mitigated and structural stability can be maintained.

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Enhancing the Electrochemical Performance and Structural Stability of Ni-Rich Layered Cathode Materials via Dual-Site Doping

ACS Applied Materials & Interfaces ◽

10.1021/acsami.1c00755 ◽

2021 ◽

Author(s):

Mihai Chu ◽

Zhongyuan Huang ◽

Taolve Zhang ◽

Rui Wang ◽

Tielei Shao ◽

...

Keyword(s):

Electrochemical Performance ◽

Structural Stability ◽

Cathode Materials ◽

Layered Cathode Materials ◽

Dual Site

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Unraveling vacancy-induced oxygen redox reaction and structural stability in Na-based layered oxides

Chemical Engineering Journal ◽

10.1016/j.cej.2021.133962 ◽

2021 ◽

pp. 133962

Author(s):

Mobinul Islam ◽

Muhammad Akbar ◽

Daseul Han ◽

Basit Ali ◽

Yong Jeong Choi ◽

...

Keyword(s):

Structural Stability ◽

Redox Reaction ◽

Layered Oxides

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Time-resolved high-resolution electron microscopy of structural stability in mgo clusters

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100165823 ◽

1996 ◽

Vol 54 ◽

pp. 672-673

Author(s):

T. Kizuka ◽

N. Tanaka

Keyword(s):

Electron Microscopy ◽

High Resolution ◽

Magnesium Oxide ◽

Structural Stability ◽

High Resolution Electron Microscopy ◽

Video Tape ◽

Solid State Physics ◽

Time Resolved ◽

Resolution Electron ◽

Structural And Functional Properties

Structure and stability of atomic clusters have been studied by time-resolved high-resolution electron microscopy (TRHREM). Typical examples are observations of structural fluctuation in gold (Au) clusters supported on silicon oxide films, graphtized carbon films and magnesium oxide (MgO) films. All the observations have been performed on the clusters consisted of single metal element. Structural stability of ceramics clusters, such as metal-oxide, metal-nitride and metal-carbide clusters, has not been observed by TRHREM although the clusters show anomalous structural and functional properties concerning to solid state physics and materials science.In the present study, the behavior of ceramic, magnesium oxide (MgO) clusters is for the first time observed by TRHREM at 1/60 s time resolution and at atomic resolution down to 0.2 nm.MgO and gold were subsequently deposited on sodium chloride (001) substrates. The specimens, single crystalline MgO films on which Au particles were dispersed were separated in distilled water and observed by using a 200-kV high-resolution electron microscope (JEOL, JEM2010) equipped with a high sensitive TV camera and a video tape recorder system.

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A new lithium diffusion model in layered oxides based on asymmetric but reversible transition metal migration

Energy & Environmental Science ◽

10.1039/c9ee04123k ◽

2020 ◽

Vol 13 (4) ◽

pp. 1269-1278 ◽

Cited By ~ 5

Author(s):

Kyojin Ku ◽

Byunghoon Kim ◽

Sung-Kyun Jung ◽

Yue Gong ◽

Donggun Eum ◽

...

Keyword(s):

Transition Metal ◽

Diffusion Model ◽

Layered Oxides ◽

Layered Oxide ◽

Reversible Transition ◽

Lithium Diffusion ◽

Metal Migration

We propose a new lithium diffusion model involving coupled lithium and transition metal migration, peculiarly occurring in a lithium-rich layered oxide.

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