High-Entropy Configuration Strategy to Build High Performance Na-Ion Layered Oxide Cathodes Derived from Simple Techniques

Xiangnan Li; Xinyu Tang; Ming Ge; Mengdan Zhang; Wenfeng Liu; Xiaojian Liu; Yuantao Cui; Huishuang Zhang; Yanhong Yin; Shuting Yang

doi:10.1021/acs.langmuir.4c00676

High-Entropy Configuration Strategy to Build High Performance Na-Ion Layered Oxide Cathodes Derived from Simple Techniques

Langmuir. 2024 May 13. doi: 10.1021/acs.langmuir.4c00676. Online ahead of print.

Authors

Xiangnan Li^{1

2

3

4}, Xinyu Tang^{1

2

3}, Ming Ge^{1

2

3}, Mengdan Zhang^{1

2

3}, Wenfeng Liu^{1

2

3}, Xiaojian Liu^{1

2

3}, Yuantao Cui^{1

2

3}, Huishuang Zhang^{1

2

3}, Yanhong Yin^{1

2

3}, Shuting Yang^{1

2

3}

Affiliations

¹ School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China.
² National and Local Joint Engineering Laboratory of Motive Power and Key Materials, Xinxiang, Henan 453007, China.
³ Collaborative Innovation Center of Henan Province for Motive Power and Key Materials, Xinxiang, Henan 453007, China.
⁴ Henan Province Power Battery Innovation Center Co. LTD, Xinxiang, Henan 453000, China.

PMID: 38738776
DOI: 10.1021/acs.langmuir.4c00676

Abstract

Layered transition metal oxides are commonly used as the cathode materials in sodium-ion batteries due to their low cost and easy manufacturing. However, the application is hindered by poor rate performance and complex phase transitions. To address these challenges, a new seven-component high-entropy layered oxide cathode material, O3-NaNi_0.25Fe_0.15Mn_0.3Ti_0.1Sn_0.05Co_0.05Li_0.1O₂ (HEO) has been developed. The entropy stabilization effect plays a crucial role in improving the performance of electrochemical systems and the stability of structures. The HEO exhibits a specific discharge capacity of 154.1 mA h g^-1 at 0.1 C and 94.5 mA h g^-1 at 7 C. In-situ and ex-situ XRD results demonstrate that the HEO effectively retards complex phase transitions. This work provides a high-entropy design for the storage materials with a high energy density. Meanwhile, it eliminates industry doubts about the performance of sodium ion layered oxide cathode materials.