2D Layered Graphitic Carbon Nitride Sandwiched with Reduced Graphene Oxide as Nanoarchitectured Anode for Highly Stable Lithium-ion Battery. (20th May 2017)

• Record Type: Journal Article
• Authors: M Subramaniyam, Chandrasekar; Deshmukh, Kavita A.; Tai, Zhixin; Mahmood, Nasir; Deshmukh, Abhay D.; Goodenough, John B.; Dou, Shi Xue; Liu, Hua Kun
• Is Part Of: Electrochimica acta. Volume 237(2017)
• Page Start: 69
• Page End: 77
• Publication Date: 2017-05-20
• Subjects: Carbon nitride (C3N4) -- high energy sonication -- hydrothermal -- anode -- 2D nanosheets -- lithium-ion battery; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2017.03.194
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: Two dimensional (2D) nanomaterials with high gravimetric capacity and rate capability are a key strategy for the anode of a Li-ion battery, but they still pose a challenge for Li-ion storage due to limited conductivity and an inability to alleviate the volume change upon lithiation and delithiation. In this paper, we report the construction of a 3D architecture anode consisting of exfoliated 2D layered graphitic carbon nitride (g-C3 N4 ) and reduced graphene oxide (rGO) nanosheets (CN-rGO) by hydrothermal synthesis. First, bulk g-C3 N4 is converted to nanosheets to increase the edge density of the inert basal planes since the edges act as active Li-storage sites. This unique 3D architecture, which consists of ultrathin g-C3 N4 nanosheets sandwiched between conductive rGO networks, exhibits a capacity of 970 mA h g −1 after 300 cycles, which is 15 fold higher than the bulk g-C3 N4 . The tuning of the intrinsic structural properties of bulk g-C3 N4 by this simple bottom-up synthesis has rendered a 3D architectured material (CN-rGO) as an effective negative electrode for high energy storage applications.