Highly dual-doped multilayer nanoporous graphene: efficient metal-free electrocatalysts for the hydrogen evolution reaction

Abstract

A bottom-up approach was introduced to prepare nitrogen and phosphorus dual-doped multilayer graphene with high dopant content and well-developed porosity, which leads to high catalytic activity in hydrogen evolution reaction with comparable onset overpotential (0.12 V) and Tafel slope (79

Straightforward synthesis of nitrogen-doped carbon nanotubes as highly active bifunctional electrocatalysts for full water splitting

“…(N HER10 ) in 0.1 M NaOH which is comparable to that of transition/ noble metal and metal free HER catalysts [13,14]. Recently, Co 3 O 4 nanospheres on the surface of nitrogen doped carbon nanotubes [25] have been reported for catalyzing full water splitting with higher N HER10 of 380 mV in 0.1 M KOH.…”

“…In order to reduce/replace noble metal based electrocatalysts, various non-precious metal water-splitting catalysts have been developed [12]. In recent years, clear progress has been made in the development of efficient electrocatalysts with earth-abundant materials for HER [13,14] and OER [3,4,15] in alkaline media. Substantial research efforts have been put on developing versatile bifunctional catalysts with satisfying activity toward both HER and OER, enabling operation in the same electrolyte [8,16].…”

Carbon Solving Carbon's Problems: Recent Progress of Nanostructured Carbon‐Based Catalysts for the Electrochemical Reduction of CO2

“…With the success of single doped carbons for CO 2 RR applications, multiple heteroatom doping strategies could also prove to be feasible for enhancing catalytic activity, as seen for other electrochemical processes. [57,58] However, such strategies have yet to be employed for carbon-based CO 2 RR electrocatalysts.…”

Kohlenstoffbasierte Metallfreie Katalysatoren für die Elektrokatalyse jenseits der ORR

“…Außerdem kann P durch sein freies Elektronenpaar im 3p-Orbital lokale Ladungsdichte induzieren, die freien Elektronenpaare des O* aufnehmen und so den OER-Prozess erçffnen. [79]. Dabei wurde vorausgesagt, dass die Kodotierung mit N und P eine optimale HER-Aktivität mit j DG H j % 0.08 eV ergibt.…”

“…Dabei wurde vorausgesagt, dass die Kodotierung mit N und P eine optimale HER-Aktivität mit j DG H j % 0.08 eV ergibt. [79] Ein anderes hocheffizientes HER-Katalysatormaterial auf Kohlenstoffbasis mit N und P wurde aus einem gewçhnlichen Bakterienstamm (S. aureus) abgeleitet (Abbildung 3 e). Das Endprodukt enthielt 4.6 Atom-% N sowie 1.63 Atom-% P. Die eingebauten N-und P-Heteroatome konnten das in der Graphenmatrix benachbarte Abbildung 3. a) NBO-Populationsanalyse für sechs verschiedene Nichtmetall-Heteroatome in der Graphenmatrix.…”