Bamboolike Carbon Microfibers Derived from Typha Orientalis Fibers for Supercapacitors and Capacitive Deionization

Abstract

The increasing demand for efficient energy storage and water desalination requires advanced porous carbon materials from biomasses due to their sustainability and renewability. The morphologies, microstructures, and properties of carbon materials were determined by the biomass precurors. Here, a novel bamboolike Typha orientalis fiber was selected as a precursor to prepare porous carbon material by carbonization and activation methods. The carbon material retains the bamboolike microfiber structure of the precursor and presents high specific surface area, well-balanced pore size distribution, and high conductivity and good hydrophilic property. It also displays a specific capacitance of 351 F g−1 at current density of 1.0 A g−1 as well as good stability over 10000 cycles for a supercapacitor as well as an outstanding salt adsorption capacity of 18.5 mg g−1 at voltage of 1.6 V and 81% retention after 55 cycles for capacitive deionization.

A 2D metal–organic framework/reduced graphene oxide heterostructure for supercapacitor application

“… 51 The peaks in N 1s are deconvoluted in to the following bonding, pyridinic bonding, nitrogen metal bonding, pyrrollic bonding and graphitic bonding. 52 Fig. 6f represents XPS spectrum of oxygen which is in agreement with reported literature values.…”

Biomass‐based Self‐single‐oxygen Heteroatom‐doped Hierarchical Porous Carbon Nanosheets for High‐performance Symmetrical Supercapacitors

“…Furthermore, a broad peak was found at an angle of 42–45°, which correlated to the reflection plane (100), therefore, indicating the disturbed (turbostratic) interlayer graphite carbon [41] . This is speculated relatively high electrical conductivity to improve the electrochemical properties [42,43] . Additionally, the reflection plane (002) exhibit a precise peak increase at MOAC‐ZnCl 2 (2θ=25°), compared to MOAC‐H 3 PO 4 and MOAC.…”

“…[41] This is speculated relatively high electrical conductivity to improve the electrochemical properties. [42,43] Additionally, the reflection plane (002) exhibit a precise peak increase at MOAC-ZnCl 2 (2θ = 25°), compared to MOAC-H 3 PO 4 and MOAC. This indicated relatively high micropores density, [36,44] exhibiting similarities to the data shown in the N 2 gas absorption analysis.…”

Nanofiber-enrich activated carbon coin derived from tofu dregs as electrode materials for supercapacitor

“…Furthermore, the GCD technique was evaluated at a constant current density of 1 A g -1 with the capacitive behavior (Csp) determined according to the following equation ( 2) [26,27]:…”