Tin oxide evolution by heat-treatment with tin-aminoclay (SnAC) under argon condition for lithium-ion battery (LIB) anode applications

• Published in: Journal of power sources Vol. 437; p. 226946
• Main Authors: Mun, Yoo Seok, Pham, Tuyet Nhung, Hoang Bui, Vu Khac, Tanaji, Salunkhe Tejaswi, Lee, Hyun Uk, Lee, Go-Woon, Choi, Jin Seok, Kim, Il Tae, Lee, Young-Chul
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.10.2019
• Subjects: Anode; Lithium-ion battery (LIB); Metal (oxide) evolution; Sn-aminoclay (SnAC); Sn/SnO/SnO2 nanoparticles; Sn-aminoclay (SnAC); Anode; Lithium-ion battery (LIB); Metal (oxide) evolution; Sn/SnO/SnO2 nanoparticles
• ISSN: 0378-7753; 1873-2755
• DOI: 10.1016/j.jpowsour.2019.226946

A layered tin-aminoclay structure of high specific surface area and offering great mechanical resistance to stretching is used as an improved anode for lithium-ion battery application. The active nanoparticles (Sn/SnO/SnO2 nanoparticles) are evolved by a heat-treatment process through direct conversion of Sn species within tin-aminoclay structure. Besides, this heat treatment process facilitates removal of oxygen functionalities and homogenization of the tin-aminoclay surface, and also provides great synergistic effects, all leading to improved theoretical specific capacity and electrochemical performance in lithium-ion battery applications. Thus, tin-aminoclay heat-treated at 500 °C under the argon condition is considered to be a most promising candidate anode material one that can deliver a highest initial discharge capacity value of 1,400 mAh g−1, good stability after 95 repeated cycles, and a high reversible capacity of about 500 mAh g−1 at a current density of 100 mA g−1. [Display omitted] •Sn/SnO/SnO2's evolution by carbonization process with tin-aminoclay (SnAC).•Direct growth of Sn/SnO/SnO2 nanocrystals within SnAC matrix.•Synergistic effects between active Sn/SnO/SnO2 NPs and SnAC matrix.•Promising anode material with highest specific capacity of 1,400 mAh g−1.