Correlation of microstructure and catalytic activity of crystalline Ni–Co–Y alloy electrode for the hydrogen evolution reaction in alkaline solution

Ni–CeO2 composite cathode material for hydrogen evolution reaction in alkaline electrolyte

“…MH ads þ H 2 O þ e À 4 H 2 þ M þ OH À Heyrovsky reaction (5) MH ads þ MH ads 4 H 2 þ 2M Tafel reaction (6) When the charge-transfer coefficient is 0.5, the RDS is the Volmer reaction or the Volmer reaction coupled with one of other two reactions [14,17,18,44]. As listed in Table 3, the charge-transfer coefficients are all close to 0.5.…”

“…The j 0 is the apparent exchange current density, which can represent the HER catalytic activity of the electrodes [9,16,17].…”

“…Ce has only 1 d orbital electron, which has several half-filled and empty d orbitals. An adsorptive bond can be formed between Ce and H. So a possible synergetic effect between the CeO 2 particles and Ni matrix can enhance the migration of the reduced H atoms from Ni surface to CeO 2 , and this effect can lead more available Ni sites for further dissociation of water molecules [17,23,48,49]. As a result, much improved higher electro-catalytic activity can be obtained on the NieCeO 2 composite electrodes, relative to Ni.…”

Sol–gel synthesis of palladium nanoparticles supported on reduced graphene oxide: an active electrocatalyst for hydrogen evolution reaction

“…The search for new and less expensive alternative material for HER has been a topic of current interest. [28][29][30][31][32][33][34][35] Deposition of Pt or Pd particles on the less expensive material such as carbon supports reduced the cost of anode materials in the industrial applications.…”

Electrochemical preparation of a novel, effective and low cast catalytic surface for hydrogen evolution reaction

“…The search for new and less expensive alternative materials for HER has been a topic of current interest [5][6][7][8][9][10][11][12][13][14][15][16][17]. Deposition of Pt layers on the less expensive metal materials such as titanium [18], tantalum [19], tungsten [20] or deposition of fine platinum particles on high surface area carbon supports [21,22] and dispersion of the platinum micro particles in polymer matrix [23][24][25][26][27][28][29] are one of the workhorses of electrochemical technology that reduced the cost of anode materials in the industrial applications.…”