Fabrication of Bi/Sn bimetallic electrode for high-performance electrochemical reduction of carbon dioxide to formate

Electrochemical Reduction of CO2 to Formate on Nanoparticulated Bi−Sn−Sb Electrodes

“…These values agree with those previously observed in similar samples. [31,32,34] Figure S2 shows Bi 4 f, Sn 3d and Sb 3d spectra of Bi 80 Sb 20 /C, Bi 95 Sb 05 /C, Sn 80 Sb 20 /C and Bi 80 Sn 10 Sb 10 /C samples. Sb 3d patterns displayed two peaks at 531 (3d 5/2 ) and 540 (3d 3/2 ) eV associated to Sb 2 O 3 .…”

“…A recent study with Bi/Sn bimetallic electrocatalyst showed that an intermediate proportion of Bi and Sn exhibited the best activity. [34] In addition to Bi and Sn bimetallic studies, antimony have demonstrated to improve the activity of other metals. SnSb alloy films, [27] specifically, Sn 9 Sb 1 film, showed a better behaviour than pure Sn.…”

CO2 Electroreduction over Metallic Oxide, Carbon-Based, and Molecular Catalysts: A Mini-Review of the Current Advances

“…When CO is the major product, there is no need to separate the gaseous CO from the liquid electrolyte because it will spontaneously separate. To this date, we can rank three distinct groups of monometallic catalysts: (1) CO selective metals such as (Au, Ag, Pd, Ga, and Zn) [41,42]; (2) metals that mainly produce HCOOH (e.g., Pb, Cd, Sn, In, and Ti) [43][44][45][46]; (3) metals that form hydrocarbons such as CH 4 and C 2 H 4 (e.g., Cu) [47].…”

Recent progress and prospect of electrodeposition-type catalysts in carbon dioxide reduction utilizations

“…Compared with the binary alloys of copper, combination studies of other metals are rare. One of the reasons is that it lacks the ability to produce hydrocarbons and the main research is on CO [27,70] , HCOOH [69] . prepare AgZn dendritic electrode [27] .…”

“…The selectivity of CO 2 to CO conversion was higher than 91%, and remained above 90% on average within 40 h. As shown in Figure 10c, after increasing the pressure of CO to 9.5 par, the current density of CO 2 to CO can reach 286 mA cm −2 . For cost consideration, Li et al used electrodeposition technology to deposit cheap Bi and Sn on the copper mesh to obtain similar pine needle-shaped dendritic structures BiSn metal electrodes [69] . The Bi 5 Sn 60 electrode has good catalytic activity for CO 2 reduction at −1.0 V RHE , the FE of formic acid is as high as 94.8%, the partial current density is 34 mA m −2 , and the yield is 636.3 μmol cm −2 h −1 .…”