skip to main content


Title: In Situ Modification of a Delafossite-Type PdCoO 2 Bulk Single Crystal for Reversible Hydrogen Sorption and Fast Hydrogen Evolution
Award ID(s):
1719875
NSF-PAR ID:
10151918
Author(s) / Creator(s):
; ; ; ; ; ; ; ; ; ; ; ; ;
Date Published:
Journal Name:
ACS Energy Letters
Volume:
4
Issue:
9
ISSN:
2380-8195
Page Range / eLocation ID:
2185 to 2191
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
More Like this
  1. Abstract

    Mixed matrix membranes (MMMs) comprising size‐sieving fillers dispersed in polymers exhibit diffusivity selectivity and may surpass the upper bound for gas separation, but their performance is limited by defects at the polymer/filler interface. Herein, a fundamentally different approach employing a highly sorptive filler that is inherently less sensitive to interfacial defects is reported. Palladium nanoparticles with extremely high H2sorption are dispersed in polybenzimidazole at loadings near the percolation threshold, which increases both H2permeability and H2/CO2selectivity. Performance of these MMMs surpasses the state‐of‐the‐art upper bound for H2/CO2separation with polymer‐based membranes. The success of these sorption‐enhanced MMMs for H2/CO2separation may launch a new research paradigm that taps the enormous knowledge of affinities between gases and nanomaterials to design MMMs for a wide variety of gas separations.

     
    more » « less
  2. Abstract

    We report the facile and efficient synthesis of common electrophilic haloboranes via a protonolysis reaction between Piers’ borane, HB(C6F5)2, and H−X (X=Cl, Br). This route benefits from fast reaction times, easy setup, and minimal workup to yield the analytically pure etherates, (C6F5)2BCl(OEt2) (1) and (C6F5)2BBr(OEt2) (2), as well as the ether‐free tri‐coordinate species, (C6F5)2BBr (3).

     
    more » « less