Water Splitting: Ni Strongly Coupled with Mo₂C Encapsulated in Nitrogen‐Doped Carbon Nanofibers as Robust Bifunctional Catalyst for Overall Water Splitting (Adv. Energy Mater. 10/2019)

Abstract

The cover representing article number https://doi.org/10.1002/aenm.201803185, by Xiaofeng Lu and co‐workers illustrates the fabrication of carbon nanofibers integrated with Ni and Mo2C nanoparticles as water splitting electrocatalysts for both HER and OER. An alkaline electrolyzer with the electrocatalysts for both anode and cathode is constructed and shows an excellent electrocatalytic activity and stability, which are expected to lead to promising applications in efficient energy storage and conversion.

Interfacial Engineering of MoO2‐FeP Heterojunction for Highly Efficient Hydrogen Evolution Coupled with Biomass Electrooxidation

“…[ 22 ] Additionally, the heterojunctions composed by early and post transition metals have the more suitable 3D electronic configurations are highlighted in electrocatalysis recently owing to the delicate electronic synergistic effect of the two metals. [ 23 ] Accordingly, we deduce that the rational combination of FeP with MoO 2 may offer an opportunity for boosting both the HER activity and BEOR stability.…”

3D Printed Mechanically Robust Graphene/CNT Electrodes for Highly Efficient Overall Water Splitting

“…f) OER polarization curves, and g,h) corresponding Tafel plots (g) and overpotentials at current densities of 30 and 100 mA cm −2 (h) for 3DP GC/NiFeP electrodes with 12, 18, and 24 layers, bulk GC/NiFeP, and CP/NiFeP electrodes. i,j) Comparisons of overpotentials at a current density of 30 mA cm −2 for 3DP GC/NiFeP‐24L with other HER catalysts [ 23–31 ] (i) and with other OER catalysts [ 26,27,32–38 ] (j) in the literature.…”

“…It is worth noting that the overpotential at a current of 30 mA cm −2 of our 3DP GC/NiFeP‐24L is only 133 mV (HER) and 214 mV (OER), which is obviously lower than most of the reported Ni‐, Co‐, and Fe‐based catalysts. [ 23–38 ] To demonstrate the advantages of 3DP GC electrodes over commercial carbon paper (CP), CP/NiFeP electrode was prepared and the HER and OER performance was tested (Figure 4c,f). Figure S13 in the Supporting Information shows that the NiFeP NA grows uniformly on the surface of the fibers of carbon paper, and its morphology is similar to that on the 3DP GC electrode.…”

Interface Engineering of Partially Phosphidated Co@Co–P@NPCNTs for Highly Enhanced Electrochemical Overall Water Splitting

“…In spite of the high electrocatalytic performance of the noble metal Pt, its rare reserves limit the practical application. [20] Some transition metal compounds including sulfides, [21][22][23][24][25] carbides, [26][27][28][29] nitrides, [30][31][32][33][34] and even non-metal carbon materials [35][36][37][38] have proved efficient for electrocatalytic HER; in addition, some transition metal phosphides (TMPs) [39][40][41][42][43] stand out for their hydrogenase-resembling structures, [44,45] yet they typically show lower conductivities because the high electronegativity of P restricts the electron delocalization in metal. [46] Besides, the surface oxidation of TMPs in ambient conditions would further block the active sites and hamper the activity.…”