Biomass-Derived Oxygen and Nitrogen Co-Doped Porous Carbon with Hierarchical Architecture as Sulfur Hosts for High-Performance Lithium/Sulfur Batteries

Abstract

In this work, a facile strategy to synthesize oxygen and nitrogen co-doped porous carbon (ONPC) is reported by one-step pyrolysis of waste coffee grounds. As-prepared ONPC possesses highly rich micro/mesopores as well as abundant oxygen and nitrogen co-doping, which is applied to sulfur hosts as lithium/sulfur batteries’ appropriate cathodes. In battery testing, the sulfur/oxygen and nitrogen co-doped porous carbon (S/ONPC) composite materials reveal a high initial capacity of 1150 mAh·g−1 as well as a reversible capacity of 613 mAh·g−1 after the 100th cycle at 0.2 C. Furthermore, when current density increases to 1 C, a discharge capacity of 331 mAh·g−1 is still attainable. Due to the hierarchical porous framework and oxygen/nitrogen co-doping, the S/ONPC composite exhibits a high utilization of sulfur and good electrochemical performance via the immobilization of the polysulfides through strong chemical binding.

High and ultra-stable energy storage from all-carbon sodium-ion capacitor with 3D framework carbon as cathode and carbon nanosheet as anode

“…PSCS-600 exhibits a sheet-like structure containing internal defects caused by the disappearance of layered cellulose and ash. When the temperature rises to 800°C, the carbon interlayer collapses, destroying the pathways of Na-ions [30]. Moreover, Fig.…”

Sustainable Battery Materials from Biomass

“…Similarly, all kinds of biowaste have been carbonized and used as host materials in the cathodes of lithium–sulfur, lithium–selenium, or lithium–oxygen batteries. Within recent years, for example, carbons made from waste materials such as fruit stones or peels, algae, nutshells, soybean hulls, grain waste, other plant waste, saw dust, and lignin have been described in this regard.…”

Recent progress on biomass‐derived ecomaterials toward advanced rechargeable lithium batteries

“…[118][119][120] Such a selfdoped strategy alters the surface properties of the carbon host, which ensures strong electrochemical affinity toward electrochemical intermediates and therefore increases the utilization of active phase and final the capacity retention. To date, a mass of biomass-based heteroatom-contain carbon materials derived from hair ( Figure 6A), 121 soybeans, 124 red algae ( Figure 6B,C), 122 coffee waste, 125 chrysanthemum, 126 and so forth, have been developed and exhibit enhanced electrochemical performances. Additionally, in a working Li metal battery, the heteroatom-containing polar carbon surface demonstrates also affinity toward metallic Li, which can guide a uniform nucleation of lithium.…”