Electrochemical performance of Mn3O4 nanorods by N‐doped reduced graphene oxide using ultrasonic spray pyrolysis for lithium storage. (18th August 2020)

• Record Type: Journal Article
• Authors: Kim, In Gyeom; Ghani, Faizan; Lee, Kwan‐Young; Park, Sehkyu; Kwak, Soonjong; Kim, Hyung‐Seok; Nah, In Wook; Lim, JongChoo
• Is Part Of: International journal of energy research. Volume 44:Number 14(2020)
• Page Start: 11171
• Page End: 11184
• Publication Date: 2020-08-18
• Subjects: anode -- lithium ion batteries -- manganese oxide (Mn3O4) -- nitrogen doped reduced graphene oxide (NrGO) -- spray pyrolysis; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Power resources -- Research -- Periodicals; 621.042
• DOI: 10.1002/er.5686
• Languages: English
• ISSNs: 0363-907X

Abstract

Summary: The crumpled N‐doped reduced graphene oxide wrapped Mn3 O4 nanorods (Mn‐NrGO) composite are synthesized via a combination of spray pyrolysis and a hydrothermal process for lithium ion batteries. The Mn3 O4 nanorods are uniformly dispersed in the conductive matrix of crumpled N‐doped reduced graphene oxide, forming a uniform wrapped composite and stopping them from restacking, which synergistically enhanced the Li + ion conductivity. The well‐defined Mn3 O4 nanorods, strong interaction between Mn3 O4 and NrGO, and highly graphitic properties of Mn‐NrGO result in superior reversible capacity, long cycle life, and superior rate performance of approximately 1500 mAh/g at 0.1 C after 100 cycles and >660S mAh/g at 1.0 C after 500 cycles. Abstract : Crumpled nitrogen doped reduced graphene oxide wrapped Mn3 O4 nanorods composite (Mn‐NrGO) are synthesized via a combination of facile spray pyrolysis and a hydrothermal process as a high‐performance anode material for LIBs. Spray pyrolysis process allows facile and strong integration of Mn3 O4 nanorods and graphene sheets and increases total degree of graphitic nature of Mn‐NrGO which results in improved electrochemical properties.