“…In fact, first attempts to integrate copper with carbon (e.g. graphite, carbon fiber) took place as early as in 1970s 20,21 or before. There is a range of techniques employed to manufacture Cu-nanocarbon composites, but the three most common routes are based on powder metallurgy [22][23][24][25][26][27][28][29][30][31][32][33][34] , electroplating [35][36][37][38][39][40][41][42][43][44][45] or electroless deposition 46,47 .…”