Phosphorus and Nitrogen Dual-Doped Few-Layered Porous Graphene: A High-Performance Anode Material for Lithium-Ion Batteries

Abstract

Few-layered graphene networks composed of phosphorus and nitrogen dual-doped porous graphene (PNG) are synthesized via a MgO-templated chemical vapor deposition (CVD) using (NH4)3PO4 as N and P source. P and N atoms have been substitutionally doped in graphene networks since the doping takes place at the same time with the graphene growth in the CVD process. Raman spectra show that the amount of defects or disorders increases after P and N atoms are incorporated into graphene frameworks. The doping levels of P and N measured by X-ray photoelectron spectroscopy are 0.6 and 2.6 at %, respectively. As anodes for Li ion batteries (LIBs), the PNG electrode exhibits high reversible capacity (2250 mA h g(-1) at the current density of 50 mA g(-1)), excellent rate capability (750 mA h g(-1) at 1000 mA g(-1)), and satisfactory cycling stability (no capacity decay after 1500 cycles), showing much enhanced electrode performance as compared to the undoped few-layered porous graphene. Our results show that the PNG is a promising candidate for anode materials in high-rate LIBs.

A Large‐Area, Flexible, and Flame‐Retardant Graphene Paper

“…[ 5a , 23 ] The High-resolution XPS spectra with curve fi ttings for p2p spectra of RGO-HCCP could be deconvoluted into two peaks (Figure 4 g). The peaks at 134.3 and 133.6 eV were P−O and C−PO 3 , [ 24 ] which played important roles in the fi re resistance.…”

Dual doped monolayer and bilayer graphene: The case of 4p and 2p elements

“…The first of such investigations was the study of the transport properties of PN dual-doped graphene [33]. This material has been synthesized recently and proved to be an excellent catalyst for hydrogen evolution reactions [34], as well as anode materials for Li batteries [35]. Undoubtly, the most investigated member of the family of dual doped systems is SN dual doped graphene [36][37][38][39][40][41][42][43][44].…”

N-, P- and S-tridoped graphene as metal-free electrocatalyst for oxygen reduction reaction

“…The peaks at 132.0 and 133.2 eV are related to the C 3 -PO, C 2 -PO 2 , and C-PO 3 . And, P-O bonding and P-C bonding are present at 134.3, 130.8 and 134.3 eV [29]. From the XPS results, we could speculate that N, P and S were covalently bonded with C in graphene lattice successfully.…”