US 11,939,684 B2
Use of sulfidic compositions
Lars Hensgen, Klagenfurt (AT); Ulf-Peter Apfel, Bochum (DE); and Mathias Smialkowski, Hattingen (DE)
Assigned to TRIBOTECC GMBH, Arnoldstein (AT)
Appl. No. 17/426,731
Filed by TRIBOTECC GMBH, Arnoldstein (AT)
PCT Filed Feb. 21, 2020, PCT No. PCT/EP2020/054633
§ 371(c)(1), (2) Date Jul. 29, 2021,
PCT Pub. No. WO2020/169806, PCT Pub. Date Aug. 27, 2020.
Claims priority of application No. 19158640 (EP), filed on Feb. 21, 2019.
Prior Publication US 2022/0106693 A1, Apr. 7, 2022
Int. Cl. C25B 11/047 (2021.01); C25B 1/04 (2021.01); C25B 11/042 (2021.01)
CPC C25B 11/047 (2021.01) [C25B 1/04 (2013.01); C25B 11/042 (2021.01)] 21 Claims
OG exemplary drawing
 
1. A composition of formula I:
Fe9-a-b-cNiaCobMcS8-dSed  (I)
wherein,
M stands for one or more elements having in the ionic state an effective ionic radius in the range of 70-92 pm,
a is a number within the range of 2.5≤a≤3.5,
b is a number within the range of 1.5≤b≤5.0,
c is a number within the range of 0.0≤c≤2.0,
d is a number within the range of 0.0≤d≤4.0,
the sum of a, b and c is in the range of 5≤a+b+c≤8,
≥90 wt. % of the composition is in the pentlandite phase, and
the composition is configured for electrocatalytic splitting of water.