High-Rate Layered Cathode of Lithium-Ion Batteries through Regulating Three-Dimensional Agglomerated Structure

Jun-Ping Hu, Hang Sheng, Qi Deng, Qiang Ma, Jun Liu, Xiong-Wei Wu, Jun-Jie Liu and Yu-Ping Wu
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Jun-Ping Hu: School of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China
Hang Sheng: School of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China
Qi Deng: School of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China
Qiang Ma: School of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China
Jun Liu: School of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China
Xiong-Wei Wu: School of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China
Jun-Jie Liu: School of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China
Yu-Ping Wu: School of Energy Science and Engineering, Nanjing Tech University, Nanjing 211816, China

Energies, 2020, vol. 13, issue 7, 1-12

Abstract: LiNi x Co y Mn z O 2 (LNCM)-layered materials are considered the most promising cathode for high-energy lithium ion batteries, but suffer from poor rate capability and short lifecycle. In addition, the LiNi 1/3 Co 1/3 Mn 1/3 O 2 (NCM 111) is considered one of the most widely used LNCM cathodes because of its high energy density and good safety. Herein, a kind of NCM 111 with semi-closed structure was designed by controlling the amount of urea, which possesses high rate capability and long lifespan, exhibiting 140.9 mAh·g −1 at 0.85 A·g −1 and 114.3 mAh·g −1 at 1.70 A·g −1 , respectively. The semi-closed structure is conducive to the infiltration of electrolytes and fast lithium ion-transfer inside the electrode material, thus improving the rate performance of the battery. Our work may provide an effective strategy for designing layered-cathode materials with high rate capability.

Keywords: agglomerated structure; high-rate; layered cathode; lithium-ion batteries (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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