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Title: High-Capacity Cathode Material with High Voltage for Li-Ion Batteries

Abstract

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.

Authors:
 [1];  [2];  [3];  [2];  [3];  [3];  [1];  [1];  [3]; ORCiD logo [1];  [2];  [2]
  1. Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (China)
  2. Chinese Academy of Sciences (CAS), Beijing (China)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1436262
Alternate Identifier(s):
OSTI ID: 1416997
Report Number(s):
BNL-203616-2018-JAAM
Journal ID: ISSN 0935-9648
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Materials
Additional Journal Information:
Journal Volume: 30; Journal Issue: 9; Journal ID: ISSN 0935-9648
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Shi, Ji -Lei, Xiao, Dong -Dong, Ge, Mingyuan, Yu, Xiqian, Chu, Yong, Huang, Xiaojing, Zhang, Xu -Dong, Yin, Ya -Xia, Yang, Xiao -Qing, Guo, Yu -Guo, Gu, Lin, and Wan, Li -Jun. High-Capacity Cathode Material with High Voltage for Li-Ion Batteries. United States: N. p., 2018. Web. https://doi.org/10.1002/adma.201705575.
Shi, Ji -Lei, Xiao, Dong -Dong, Ge, Mingyuan, Yu, Xiqian, Chu, Yong, Huang, Xiaojing, Zhang, Xu -Dong, Yin, Ya -Xia, Yang, Xiao -Qing, Guo, Yu -Guo, Gu, Lin, & Wan, Li -Jun. High-Capacity Cathode Material with High Voltage for Li-Ion Batteries. United States. https://doi.org/10.1002/adma.201705575
Shi, Ji -Lei, Xiao, Dong -Dong, Ge, Mingyuan, Yu, Xiqian, Chu, Yong, Huang, Xiaojing, Zhang, Xu -Dong, Yin, Ya -Xia, Yang, Xiao -Qing, Guo, Yu -Guo, Gu, Lin, and Wan, Li -Jun. Mon . "High-Capacity Cathode Material with High Voltage for Li-Ion Batteries". United States. https://doi.org/10.1002/adma.201705575. https://www.osti.gov/servlets/purl/1436262.
@article{osti_1436262,
title = {High-Capacity Cathode Material with High Voltage for Li-Ion Batteries},
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 Gu, Lin and Wan, Li -Jun},
abstractNote = {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},
journal = {Advanced Materials},
number = 9,
volume = 30,
place = {United States},
year = {2018},
month = {1}
}

Journal Article:
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Cited by: 40 works
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Figures / Tables:

Figure 1 Figure 1: a) Schematic of heat quality (i.e., equivalent thermal energy storage in a high-temperature heat source can supply more useful work). b) Schematic of energy quality (equivalent electrical energy storage in a high-voltage battery can offer more useful work). c) Schematic of high energy quality of cathodes and anodes.

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