Nickel-polyaniline composite electrodes for hydrogen evolution reaction in alkaline media

Poly(3-aminobenzoic acid) Decorated with Cobalt Zeolitic Benzimidazolate Framework for Electrochemical Production of Clean Hydrogen

“…It was reported that an increase in current density (in terms of shift in logarithm current) in the presence of an increase in the H 2 SO 4 concentration is an indicator of the HER [40,41]. The intrinsic properties of electrocatalysts together with their catalytic efficiencies are usually studied using Tafel plots [40][41][42][43][44]. The linear polarization curves are presented in Figure 6d-f for PABA, CoZIF and the PABA/CoZIF composite, respectively.…”

Nanostructured Carbon-Nitrogen-Sulfur-Nickel Networks Derived From Polyaniline as Bifunctional Catalysts for Water Splitting

“…From this perspective, conducting polymers combined with low loading of metallic species are good candidates for high-performance electrocatalysts due to their interesting structural and physical properties (Ghosh et al, 2015(Ghosh et al, , 2016(Ghosh et al, , 2017Wang et al, 2016a;Ramohlola et al, 2018). Among those polymers, polyaniline (PANI) has received tremendous attention in recent years in (bio)electrochemistry to be directly used as an electrode or indirectly as a supporting material (Wu et al, 2011;Silva et al, 2013;Boeva and Sergeyev, 2014;Xu and Minteer, 2014;Wang et al, 2016a;Cao et al, 2017;Torres et al, 2017;Feng et al, 2018;Masibi et al, 2018;Ramohlola et al, 2018;Shendkar et al, 2018;Bai et al, 2019). Torres and co-workers have shown that upon the introduction of Ni in a PANI-based electrode, the exchange current density (j 0 ) increases from 0.35 to 3.47 µA cm −2 , which indicates that the ability of electron transfer (driving force in electrocatalysis) is about one magnitude higher (Torres et al, 2017).…”

“…Among those polymers, polyaniline (PANI) has received tremendous attention in recent years in (bio)electrochemistry to be directly used as an electrode or indirectly as a supporting material (Wu et al, 2011;Silva et al, 2013;Boeva and Sergeyev, 2014;Xu and Minteer, 2014;Wang et al, 2016a;Cao et al, 2017;Torres et al, 2017;Feng et al, 2018;Masibi et al, 2018;Ramohlola et al, 2018;Shendkar et al, 2018;Bai et al, 2019). Torres and co-workers have shown that upon the introduction of Ni in a PANI-based electrode, the exchange current density (j 0 ) increases from 0.35 to 3.47 µA cm −2 , which indicates that the ability of electron transfer (driving force in electrocatalysis) is about one magnitude higher (Torres et al, 2017). Similar improvement of the electrocatalytic activity toward HER has been recently reported following the introduction of precursors of Fe, Co, Mn, and Ni (Feng et al, 2018).…”

Electrophoretic Deposition of MoSe2–MoOx Nanosheets for Enhanced Electrocatalytic Hydrogen Evolution Reaction

“…Of many non-noble-metal HER electrocatalysts, transition-metal dichalcogenides, − transition-metal oxides/hydroxides, − black phosphorous, carbon-based materials (i.e., carbon nanotubes, graphene, graphene oxide, and carbon nanostructures), conducting polymers such as polypyrrole and polyaniline, − and so forth stand out as the traditionally striking HER electrochemical catalysts. Two-dimensional transition-metal dichalcogenides (2D-TMDCs) including MoS 2 , − WS 2 , MoSe 2 , and WSe 2 have gained huge attention owing to their tunable catalytic activities.…”