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SUMMARY:The investigation of structural and electronic configurations of n
 oble-metal free nanocomposite and electrocatalytic oxides for acidic water
  electrolysis
DTSTART;VALUE=DATE-TIME:20211125T072400Z
DTEND;VALUE=DATE-TIME:20211125T072500Z
DTSTAMP;VALUE=DATE-TIME:20260718T062854Z
UID:indico-contribution-4192@events01.synchrotron.org.au
DESCRIPTION:Speakers: Darcy Simondson-Tammer (Monash University)\nThe deve
 lopment of *in situ* XAS for water electrolysis applications\, such as sus
 tainable hydrogen production\, is integral towards the accurate characteri
 sation of state-of-the-art electrocatalytic materials. As this field conti
 nues to uncover a breadth of earth-abundant and high performance electroca
 talysts\, the understanding of their operando structures and electronic st
 ates is required to not only understand the true nature of these electroma
 terials\, but also precisely bench-mark emerging catalysts and catalytic m
 echanisms against already industrially dominant electrocatalysts. Due to i
 ts intrinsically conductive nature\, and the purity of hydrogen that is pr
 oduced at industrially relevant current densities\, acidic water electroly
 sis presents one of the most capable modes of producing hydrogen sustainab
 ly at the terawatt scale. It is from these perspectives that the developme
 nt of cost effective\, acid stable and highly active catalytic materials m
 ust be developed and characterised in order to make this technology increa
 singly feasible for deployment at the global scale. Operando XAS has been 
 instrumental in our recent developments towards two intrinsically stable e
 lectrocatalysts that are based off cobalt-rion-lead and silver-bismuth mix
 ed oxides\, and the now refined understanding of "catalyst-in-matrix" mech
 anisms of operation. During our XAS work at ANSTO we have been successful 
 in collecting high quality XANES and EXAFS data on the two acid stable mat
 erials described\, whereby structural and electronic information would not
  have been uncovered under *ex situ* XAS experimental designs. From the de
 tailed results obtained\, we are now refining our *in situ* XAS technique 
 for a breadth of acid-stabe materials that have been developed within our 
 team at Monash University and believe that this will benefit the field tow
 ards precise bench-marking metrics for cost effective electrocatalysis.\n\
 nhttps://events01.synchrotron.org.au/event/146/contributions/4192/
LOCATION:Online
URL:https://events01.synchrotron.org.au/event/146/contributions/4192/
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