Mesopore-dominant nitrogen-doped carbon with a large defect degree and high conductivity via inherent hydroxyapatite-induced self-activation for lithium-ion batteries. Issue 22 (28th March 2018)

• Record Type: Journal Article
• Authors: Wang, Hanwei; Sheng, Chengmin; Cai, Tailong; Jin, Chunde; Sun, Qingfeng; Wang, Chao
• Is Part Of: RSC advances. Volume 8:Issue 22(2018)
• Page Start: 12204
• Page End: 12210
• Publication Date: 2018-03-28
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c8ra02034e
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A hydroxyapatite-induced self-activation method has been used to prepare nitrogen-doped mesopore-dominant carbon. The carbon has abundant macro/mesopores, high conductivity, and favorable defects and exhibited high-performance in LIBs. Abstract : In this study, N-doped mesopore-dominant carbon (NMC) materials were prepared using bio-waste tortoise shells as a carbon source via a one-step self-activation process. With intrinsic hydroxyapatites (HAPs) as natural templates to fulfill the synchronous carbonization and activation of the precursor, this highly efficient and time-saving method provides N-doped carbon materials that represent a large mesopore volume proportion of 74.59%, a high conductivity of 4382 m S −1, as well as larger defects, as demonstrated by Raman and XRD studies. These features make the NMC exhibit a high reversible lithium-storage capacity of 970 mA h g −1 at 0.1 A g −1, a strong rate capability of 818 mA h g −1 at 2 A g −1, and a good capacity of 831 mA h g −1 after 500 cycles at 1 A g −1 . This study provides a highly efficient and feasible method to prepare renewable biomass-derived carbons as advanced electrode materials for the application of energy storage.