Ordered porous copper sulfide with hollow interior for superior electrochemical CO2 to formate conversion

Customized CO2 electroreduction to methane or ethylene by manipulating *H and *CO adsorption on Cu/CeOx catalysts

“…3–5 Distinct from the generation of simpler C 1 products like formic acid (HCOOH) and carbon monoxide (CO), 6 there is an intensified demand for the production of high energy density hydrocarbons, notably methane (CH 4 ) and ethylene (C 2 H 4 ), which are envisioned as potential sustainable fuels. 7–9 To date, copper-based materials, endowed with optimal adsorption energy for the *CO intermediate, have been heralded as the most effective catalysts for facilitating the conversion of CO 2 into valuable hydrocarbons. 10,11 In pursuit of this, a spectrum of Cu-based electrocatalysts, encompassing metallic Cu, Cu oxides, 12–14 Cu-integrated metal–organic frameworks (MOFs), 15,16 and Cu-centric molecules, 17,18 have been meticulously developed, marking significant strides in the electrocatalytic conversion of CO 2 to CH 4 or C 2 H 4 .…”

Constructing Favorable Microenvironment on Copper Grain Boundaries for CO2 Electro-conversion to Multicarbon Products

“…Storing intermittent sustainable energy in valuable chemicals and fuels offers a promising approach to alleviating energy dilemmas while closing anthropogenic carbon cycles. Among various technologies, the electrochemical carbon dioxide reduction reaction (eCO 2 RR) stands out due to its moderate operational conditions and the diversity of products. − Compared with C 1 compounds, developing efficient electrocatalysts that achieve high selectivity for multicarbon (C 2+ ) product is particularly attractive, as these compounds hold greater economic value and market demand. − However, the eCO 2 RR involves multiple proton-coupled electron transfer steps, which generate sophisticated intermediates and overlapping reaction pathways, making the corresponding reaction mechanisms elusive. , To date, copper-based materials probably are recognized for their unique ability to favor the formation of C 2+ products, primarily due to the optimal binding energy with reaction intermediates. − Nonetheless, conventional bulk polycrystalline Cu catalysts still suffers from sluggish reaction kinetics and unsatisfactory C 2+ selectivity …”