Ru-doping to enhance electrochemical performance of co-free Li-rich layered cathode materials

Tong Sun; Qing Huang; Ning Li; Yuefeng Su

doi:10.1117/12.3004579

25 September 2023 Ru-doping to enhance electrochemical performance of co-free Li-rich layered cathode materials

Tong Sun, Qing Huang, Ning Li, Yuefeng Su

Proceedings Volume 12788, Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023); 127880L (2023) https://doi.org/10.1117/12.3004579
Event: Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023), 2023, Kuala Lumpur, Malaysia

Abstract

The development of high-capacity cathode materials is one of most effective strategies to improve the energy density of Li-ions batteries. Layered Li-rich manganese-based cathode materials have attracted much attention from researchers due to their ultra-high specific capacity (>250 mAh g^-1) and low cost. However, Li-rich cathode materials still suffer some drawbacks especially its poor cycle performance due to the necessary high operation voltage, which accelerated structural deterioration toward inactive rock-salt phase and greatly limit their practical application. Herein, Ru are proposed as a doping element to substitute TM in Li_1.2Ni_0.2Mn_0.6O₂ as a prototype materials. The XRD and EDS mapping results indicate the Ru has been successfully doped in the layered structure and can restrain the structural degradation during cycling. The electrochemical tests present that the Li-rich cathode with 1 wt% Ru-doping displays the highest capacity retention with nearly no capacity fade over 40 cycles. This work should shed light on the structural and electrochemical enhancement of lithium-rich cathode materials for the most advanced Li ions batteries.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Tong Sun, Qing Huang, Ning Li, and Yuefeng Su "Ru-doping to enhance electrochemical performance of co-free Li-rich layered cathode materials", Proc. SPIE 12788, Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023), 127880L (25 September 2023); https://doi.org/10.1117/12.3004579

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available