Interlayer, gallery-engineered graphene oxide using selective protection of mono-Boc-ethylenediamine as anode for sodium ion batteries

Thushara, K.M.; Ponraj, Mano Ranjana; Mandal, Sneha; Peng, Xihong; Grage, Stephan L.; Kang, Jeon Woong; Venkatesan, Renugopalakrishnan; Thavasi, Velmurugan; Kannan, Arunachala Mada; Liepmann, Dorian; Pillai, Vijayamohanan K.; Bhagavathsingh, Jebasingh

doi:10.1016/j.est.2023.109237

Cited by 1 publication

(3 citation statements)

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“…1b) the peaks which were related to the formation of -C-SOx-C-(x = 2, 3) were determined at S2p at 168.49 eV, from which is caused by sulfur incorporated into disordered carbon successfully. 7,59 The C1s spectrum located at 284.5 eV, can be resolved as follows: C-C and C=C at 284.46 eV, 60 C-O at 286.68 eV, and O-C=O at 290.0 eV indicating that most of the C atoms remained in the conjugated honeycomb lattice, like sp 2 C in the graphite (Fig. 1c).…”

Section: Resultsmentioning

confidence: 97%

“…Capacity fade of GO might be explained by a reaction between Na + with surface oxygen functional groups during the ion storage. 6 Cyclic voltammogram curve (CV) for 3 consecutive cycles shows the Na + insertion and extraction into/out of SGO with a very good reversibility suggesting the formation of stable SEI layer which led to good cycling stability for long cycles (Fig. 5b).…”

Section: Resultsmentioning

confidence: 98%

“…It is known that the global need for electrical vehicles (EVs) will be about 2 billion in 2050, 5 and currently lithium-ion batteries (LIBs) occupy a predominant position in the realm of such electrochemical storage systems (ESSs). 6 Unfortunately, approximately one-fourth of the annual lithium mineral consumption is known to be dedicated to the battery industry. 7 It has been calculated that if the 60 million cars produced annually over the world are replaced by plug-in hybrid vehicles, each of them requiring about 1,4 kg of lithium carbonate, the total annual demand will be around 420k tons, which is equal to 5 times the current lithium carbonate production.…”

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Production of Sulphur-Doped Graphene Oxide as an Anode Material for Na-Ion Batteries

Almarzoge,

Gencten,

Ozsin

2024

ECS J. Solid State Sci. Technol.

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Sodium-ion batteries have been the focus of interest in recent years due to abundance and cost-effectiveness of sodium resources globally as opposed to lithium. In this work, sulfur-doped graphene oxide (SGO) was synthesized using a straightforward, one-step, cost-effective, and eco-friendly chronoamperometric method at room temperature. The resulting powder was then utilized as active anode material for Na-ion batteries. The surface of the synthesized SGO powder, which consists of approximately three layers with 19 sp2 hybridized carbon rings and a domain size of about 50 nm, is covalently doped with –C-SOx-C- (x = 2,3) groups. The deduced diffusion coefficient from electrochemical impedance spectroscopy and galvanostatic intermittent titration technique measurements for SGO as anode in NIBs is in the range of 10−11–10−12 cm2.s−1. At 0.1 C rate, the initial discharge capacity recorded 256.7 mAh.g−1 at 0.1 C rate. In addition, the capacity retention for long-term cycling of 100 cycles at 2 C rate was 99.85%. The unique structure of SGO allows us to achieve satisfactory anode performance in capacity and rate capability, with potential for further enhancement.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 98%

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confidence: 99%

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