Electrochemical performance of Mn3O4 nanorods by N‐doped reduced graphene oxide using ultrasonic spray pyrolysis for lithium storage

• Published in: International journal of energy research Vol. 44; no. 14; pp. 11171 - 11184
• Main Authors: Kim, In Gyeom, Ghani, Faizan, Lee, Kwan‐Young, Park, Sehkyu, Kwak, Soonjong, Kim, Hyung‐Seok, Nah, In Wook, Lim, JongChoo
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Inc 01.11.2020; Hindawi Limited
• Subjects: anode; Batteries; Cycles; Electrochemical analysis; Electrochemistry; Graphene; Lithium; Lithium-ion batteries; Manganese; manganese oxide (Mn3O4); Manganese oxides; Nanorods; nitrogen doped reduced graphene oxide (NrGO); Pyrolysis; Rechargeable batteries; Spray pyrolysis; Storage; Strong interactions (field theory)
• ISSN: 0363-907X; 1099-114X
• DOI: 10.1002/er.5686

Summary The crumpled N‐doped reduced graphene oxide wrapped Mn3O4 nanorods (Mn‐NrGO) composite are synthesized via a combination of spray pyrolysis and a hydrothermal process for lithium ion batteries. The Mn3O4 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 Mn3O4 nanorods, strong interaction between Mn3O4 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. Crumpled nitrogen doped reduced graphene oxide wrapped Mn3O4 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 Mn3O4 nanorods and graphene sheets and increases total degree of graphitic nature of Mn‐NrGO which results in improved electrochemical properties.