Electrochemical energy storage devices with a high energy density are an important technology in modern society, especially for electric vehicles. The most effective approach to improve the energy density of batteries is to search for high-capacity electrode materials. According to the concept of energy quality, a high-voltage battery delivers a highly useful energy, thus providing a new insight to improve energy density. Based on this concept, a novel and successful strategy to increase the energy density and energy quality by increasing the discharge voltage of cathode materials and preserving high capacity is proposed. The proposal is realized in high-capacity Li-rich cathode materials. The average discharge voltage is increased from 3.5 to 3.8 V by increasing the nickel content and applying a simple after-treatment, and the specific energy is improved from 912 to 1033 Wh kg-1. The current work provides an insightful universal principle for developing, designing, and screening electrode materials for high energy density and energy quality.
Shi, Ji -Lei, et al. "High-Capacity Cathode Material with High Voltage for Li-Ion Batteries." Advanced Materials, vol. 30, no. 9, Jan. 2018. https://doi.org/10.1002/adma.201705575
Shi, Ji -Lei, Xiao, Dong -Dong, Ge, Mingyuan, et al., "High-Capacity Cathode Material with High Voltage for Li-Ion Batteries," Advanced Materials 30, no. 9 (2018), https://doi.org/10.1002/adma.201705575
@article{osti_1436262,
author = {Shi, Ji -Lei and Xiao, Dong -Dong and Ge, Mingyuan and Yu, Xiqian and Chu, Yong and Huang, Xiaojing and Zhang, Xu -Dong and Yin, Ya -Xia and Yang, Xiao -Qing and Guo, Yu -Guo and others},
title = {High-Capacity Cathode Material with High Voltage for Li-Ion Batteries},
annote = {Electrochemical energy storage devices with a high energy density are an important technology in modern society, especially for electric vehicles. The most effective approach to improve the energy density of batteries is to search for high-capacity electrode materials. According to the concept of energy quality, a high-voltage battery delivers a highly useful energy, thus providing a new insight to improve energy density. Based on this concept, a novel and successful strategy to increase the energy density and energy quality by increasing the discharge voltage of cathode materials and preserving high capacity is proposed. The proposal is realized in high-capacity Li-rich cathode materials. The average discharge voltage is increased from 3.5 to 3.8 V by increasing the nickel content and applying a simple after-treatment, and the specific energy is improved from 912 to 1033 Wh kg-1. The current work provides an insightful universal principle for developing, designing, and screening electrode materials for high energy density and energy quality.},
doi = {10.1002/adma.201705575},
url = {https://www.osti.gov/biblio/1436262},
journal = {Advanced Materials},
issn = {ISSN 0935-9648},
number = {9},
volume = {30},
place = {United States},
publisher = {Wiley},
year = {2018},
month = {01}}
