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

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

doi:10.1002/adma.201705575

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

Journal Article · Mon Jan 15 00:00:00 EST 2018 · Advanced Materials

DOI:https://doi.org/10.1002/adma.201705575· OSTI ID:1436262

Shi, Ji -Lei ^[1]; Xiao, Dong -Dong ^[2]; Ge, Mingyuan ^[3]; Yu, Xiqian ^[2]; Chu, Yong ^[3]; Huang, Xiaojing ^[3]; Zhang, Xu -Dong ^[1]; Yin, Ya -Xia ^[1]; Yang, Xiao -Qing ^[3];

^[1]; Gu, Lin ^[2]; Wan, Li -Jun ^[2]

Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (China)
Chinese Academy of Sciences (CAS), Beijing (China)
Brookhaven National Lab. (BNL), Upton, NY (United States)

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.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0012704

OSTI ID:: 1436262

Alternate ID(s):: OSTI ID: 1416997

Report Number(s):: BNL-203616-2018-JAAM

Journal Information:: Advanced Materials, Vol. 30, Issue 9; ISSN 0935-9648

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 299 works

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