Volume 136, Issue 1 e202315856
Forschungsartikel

Achieving the High Capacity and High Stability of Li-Rich Oxide Cathode in Garnet-Based Solid-State Battery

Butian Chen

Butian Chen

Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049 China

Contribution: Conceptualization (lead), Data curation (lead), Software (lead), Visualization (lead), Writing - original draft (lead), Writing - review & editing (lead)

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Prof. Jicheng Zhang

Prof. Jicheng Zhang

Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049 China

Contribution: Conceptualization (supporting), Data curation (supporting), Resources (supporting), Software (supporting)

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Dr. Deniz Wong

Dr. Deniz Wong

Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109 Berlin, Germany

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Tenghui Wang

Tenghui Wang

Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049 China

Contribution: Data curation (supporting), Software (supporting), Validation (supporting)

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Taiguang Li

Taiguang Li

Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049 China

Contribution: Data curation (supporting), Methodology (supporting), Software (supporting)

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Chong Liu

Chong Liu

Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049 China

Contribution: Data curation (supporting), Software (supporting)

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Prof. Limei Sun

Prof. Limei Sun

Department of Nuclear Physics, China Institute of Atomic Energy, Beijing, 102413 China

Contribution: Data curation (supporting)

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Prof. Xiangfeng Liu

Corresponding Author

Prof. Xiangfeng Liu

Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049 China

Contribution: Funding acquisition (lead), Supervision (lead), Writing - original draft (supporting), Writing - review & editing (supporting)

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First published: 20 November 2023
Citations: 3

Abstract

Solid-state batteries (SSBs) based on Li-rich Mn-based oxide (LRMO) cathodes attract much attention because of their high energy density as well as high safety. But their development was seriously hindered by the interfacial instability and inferior electrochemical performance. Herein, we design a three-dimensional foam-structured GaN−Li composite anode and successfully construct a high-performance SSB based on Co-free Li1.2Ni0.2Mn0.6O2 cathode and Li6.5La3Zr1.5Ta0.5O12 (LLZTO) solid electrolyte. The interfacial resistance is considerably reduced to only 1.53 Ω cm2 and the assembled Li symmetric cell is stably cycled more than 10,000 h at 0.1–0.2 mA cm−2. The full battery shows a high initial capacity of 245 mAh g−1 at 0.1 C and does not show any capacity degradation after 200 cycles at 0.2 C (≈100 %). The voltage decay is well suppressed and it is significantly decreased from 2.96 mV/cycle to only 0.66 mV/cycle. The SSB also shows a very high rate capability (≈170 mAh g−1 at 1 C) comparable to a liquid electrolyte-based battery. Moreover, the oxygen anion redox (OAR) reversibility of LRMO in SSB is much higher than that in liquid electrolyte-based cells. This study offers a distinct strategy for constructing high-performance LRMO-based SSBs and sheds light on the development and application of high-energy density SSBs.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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