Modified Coprecipitation Synthesis of Nickel-Rich NMC (Li1.0Ni0.6Mn0.2Co0.2O2) for Lithium-Ion Batteries: A Simple, Cost-Effective, Environmentally Friendly Method

Thao Le Thi; Truong Phan Van; Bo Nguyen Van; Nguyen To Van; Tuan Nguyen Van; Tien Phat Doan; Thi Lan Ngo; Ngoc Hung Vu; Tien-Thanh Nguyen; Huyen Nam Nguyen; Nguyen Vo Anh Duy; Minh Triet Dang

doi:10.1021/acsomega.3c04717

Modified Coprecipitation Synthesis of Nickel-Rich NMC (Li_1.0Ni_0.6Mn_0.2Co_0.2O₂) for Lithium-Ion Batteries: A Simple, Cost-Effective, Environmentally Friendly Method

ACS Omega. 2023 Nov 20;8(48):45414-45427. doi: 10.1021/acsomega.3c04717. eCollection 2023 Dec 5.

Authors

Affiliations

¹ Institute of Tropical Durability, Vietnam Russia Tropical Science and Technology Research Center, Ha Noi 100000, Vietnam.
² Faculty of Chemico-Physical Engineering, Le Quy Don Technical University, Ha Noi 100000, Vietnam.
³ Faculty of Biotechnology, Chemistry and Environmental Engineering, Phenikaa University, Hanoi 10000, Vietnam.
⁴ Institute of Materials Science, Vietnam Academy of Science and Technology, Ha Noi 100000, Vietnam.
⁵ School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan.
⁶ FPT University, Can Tho campus, 600 Nguyen Van Cu Street, Can Tho, Ninh Kieu 900000, Vietnam.
⁷ School of Education, Can Tho University, 3-2 Road, Can Tho City 900000, Vietnam.

Abstract

Lithium-ion batteries lay the foundation for satisfying the fast-growing demand of portable electronics and electric vehicles. However, due to the complexity of material syntheses, high fabrication temperature condition, and toxic gas emission, high volume manufacturing of lithium-ion batteries is still challenging. Here, we propose a modified coprecipitation method to synthesize Li_1.0Ni_0.6Mn_0.2Co_0.2O₂ (NMC622-MCP) as a cathode material in a simple, cost-effective, and environmentally friendly approach. We demonstrate that the proposed method can be operated in a lower temperature environment, with respect to the requirement of conventional synthesis methods. Furthermore, only CO₂ gas is emitted during synthesis. We also employed first-principles simulations to evaluate the crystallinity of the synthesized materials via X-ray diffractometer patterns. During charge/discharge processes, the obtained cathode materials induce outstanding electrochemical performance with a maximum specific capacity of up to 206.9 mAh g^-1 at 0.05 C and a retention capacity of 83.22% after 100 cycles. Thus, the simple, cost-effective, environmentally friendly, and highly electrochemical performance of the newly acquired material envisages the modified coprecipitation method as a promising tool to manufacture cathode materials for lithium-ion batteries.