Semiconductive polyolefin composition comprising carbonaceous structures, power cable comprising same and use thereof

The present invention relates to a semiconductive polyolefin composition comprising: (A) from 80 wt.% to 99.5 wt.%, based on the total weight of the semiconductive polyolefin composition, of an olefin polymer-based resin; (B) 0.1 wt.% to 10.0 wt.%, based on the total weight of the semiconductive polyolefin composition, of a first carbonaceous structure; (C) from 0.2 wt.% to 15.0 wt.%, based on the total weight of the semiconductive polyolefin composition, of carbon black and/or a second carbonaceous structure; and (D) optional additives; wherein the combined amount of component (B) and component (C) is at least 0.3 wt.% and not more than 15.0 wt.% based on the total weight of the semiconductive polyolefin composition; wherein the semiconductive polyolefin composition has an electroosmotic flow threshold value of not more than 5 wt.% of the combined amount of component (B) and component (C) dispersed in the olefin polymer-based resin (A), the electroosmotic flow threshold value being defined as the critical co