Figure 11.
(a,b) Intrinsic HER activity enhancement realized by heterostructuring the best LDH (NiCo) and monometallic hydroxide (Co(OH)2) HER with metal chalcogenides reproduced, respectively from ref. [132] (Copyright 2017, Cell Press) and ref. [133] (Copyright 2018, Wiley). (c,d) HER enhancement witnessed because by heterostructuring CoSe and NiSe with NiFe LDH mainly by improved ECSA rather than intrinsic activity enhancement (indicated by the same HER onset overpotential and EG stands for exfoliated graphite) reproduced, respectively from ref. [135] (Copyright 2016, RSC Publishing) and ref. [136] (Copyright 2017, ACS).