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Graphene assisted template based LiMn 2 O 4 flexible cathode electrodes

2018; Wiley; Volume: 42; Issue: 9 Linguagem: Inglês

10.1002/er.4043

1099-114X

Aslıhan Güler, Seyma Ozcan Duman, Deniz Nalci, Mustafa Guzeler, Emrah Bulut, Mehmet Oğuz Güler, Hatem Akbulut,

Electromagnetic wave absorption materials

International Journal of Energy ResearchVolume 42, Issue 9 p. 2971-2982 SPECIAL ISSUE PAPER Graphene assisted template based LiMn2O4 flexible cathode electrodes Aslihan Guler, Corresponding Author Aslihan Guler aslihan_erdas@hotmail.com orcid.org/0000-0002-5155-2214 Sakarya University, Engineering Faculty, Department of Metallurgical & Materials, Esentepe Campus, Sakarya, 54187 Turkey Correspondence Aslihan Guler, Sakarya University, Engineering Faculty, Department of Metallurgical & Materials, Esentepe Campus, Sakarya, 54187, Turkey. Email: aslihan_erdas@hotmail.comSearch for more papers by this authorSeyma Ozcan Duman, Seyma Ozcan Duman Sakarya University, Engineering Faculty, Department of Metallurgical & Materials, Esentepe Campus, Sakarya, 54187 TurkeySearch for more papers by this authorDeniz Nalci, Deniz Nalci Sakarya University, Engineering Faculty, Department of Metallurgical & Materials, Esentepe Campus, Sakarya, 54187 TurkeySearch for more papers by this authorMustafa Guzeler, Mustafa Guzeler Sakarya University, Engineering Faculty, Department of Metallurgical & Materials, Esentepe Campus, Sakarya, 54187 TurkeySearch for more papers by this authorEmrah Bulut, Emrah Bulut Sakarya University, Engineering Faculty, Department of Metallurgical & Materials, Esentepe Campus, Sakarya, 54187 TurkeySearch for more papers by this authorMehmet Oguz Guler, Mehmet Oguz Guler orcid.org/0000-0002-3866-6073 Sakarya University, Engineering Faculty, Department of Metallurgical & Materials, Esentepe Campus, Sakarya, 54187 TurkeySearch for more papers by this authorHatem Akbulut, Hatem Akbulut Sakarya University, Engineering Faculty, Department of Metallurgical & Materials, Esentepe Campus, Sakarya, 54187 TurkeySearch for more papers by this author Aslihan Guler, Corresponding Author Aslihan Guler aslihan_erdas@hotmail.com orcid.org/0000-0002-5155-2214 Sakarya University, Engineering Faculty, Department of Metallurgical & Materials, Esentepe Campus, Sakarya, 54187 Turkey Correspondence Aslihan Guler, Sakarya University, Engineering Faculty, Department of Metallurgical & Materials, Esentepe Campus, Sakarya, 54187, Turkey. Email: aslihan_erdas@hotmail.comSearch for more papers by this authorSeyma Ozcan Duman, Seyma Ozcan Duman Sakarya University, Engineering Faculty, Department of Metallurgical & Materials, Esentepe Campus, Sakarya, 54187 TurkeySearch for more papers by this authorDeniz Nalci, Deniz Nalci Sakarya University, Engineering Faculty, Department of Metallurgical & Materials, Esentepe Campus, Sakarya, 54187 TurkeySearch for more papers by this authorMustafa Guzeler, Mustafa Guzeler Sakarya University, Engineering Faculty, Department of Metallurgical & Materials, Esentepe Campus, Sakarya, 54187 TurkeySearch for more papers by this authorEmrah Bulut, Emrah Bulut Sakarya University, Engineering Faculty, Department of Metallurgical & Materials, Esentepe Campus, Sakarya, 54187 TurkeySearch for more papers by this authorMehmet Oguz Guler, Mehmet Oguz Guler orcid.org/0000-0002-3866-6073 Sakarya University, Engineering Faculty, Department of Metallurgical & Materials, Esentepe Campus, Sakarya, 54187 TurkeySearch for more papers by this authorHatem Akbulut, Hatem Akbulut Sakarya University, Engineering Faculty, Department of Metallurgical & Materials, Esentepe Campus, Sakarya, 54187 TurkeySearch for more papers by this author First published: 07 March 2018 https://doi.org/10.1002/er.4043Citations: 9Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Summary In this paper, a systematic method has been developed to produce highly flexible and robust graphene/LiMn2O4 (G/LMO) and graphene/LiCr0.05Mn1.95O4 (G/LCMO) free-standing composite cathode electrodes with increased specific capacity and improved electrochemical capability. Spinel LMO nanorods are synthesized by calcination method followed by a hydrothermal reaction technique. As-synthesized nanorods were then embedded in a graphene layer which will in turn serve as a self-standing binder-free cathode electrode. Spinel LMO and LCMO nanorods with a length of 600 nm and width of 50 nm were then homogenously entrapped and distributed within the layers of conductive graphene structure. This hybrid structure will help to eliminate the use of heavy metal current collectors and electrically resistant binders or even conductive additives. A discharge capacity of 114.5 mAh g−1 is obtained after first cycle and %72 capacity retention is obtained after 250 cycles from G/LCMO freestanding samples. The enhancement in the electrochemical properties is due to the unique freestanding structure of the cathode electrodes. Citing Literature Volume42, Issue9Special Issue: Alternative Energy DimensionsJuly 2018Pages 2971-2982 RelatedInformation