In:
Angewandte Chemie International Edition, Wiley, Vol. 57, No. 49 ( 2018-12-03), p. 16114-16119
Abstract:
Enhancing the p‐orbital delocalization of a Bi catalyst (termed as POD‐Bi) via layer coupling of the short inter‐layer Bi−Bi bond facilitates the adsorption of intermediate *OCHO of CO 2 and thus boosts the CO 2 reduction reaction (CO 2 RR) rate to formate. X‐ray absorption fine spectroscopy shows that the POD‐Bi catalyst has a shortened inter‐layer bond after the catalysts are electrochemically reduced in situ from original BiOCl nanosheets. The catalyst on a glassy carbon electrode exhibits a record current density of 57 mA cm −2 (twice the state‐of‐the‐art catalyst) at −1.16 V vs. RHE with an excellent formate Faradic efficiency (FE) of 95 %. The catalyst has a record half‐cell formate power conversion efficiency of 79 % at a current density of 100 mA cm −2 with 93 % formate FE when applied in a flow‐cell system. The highest rate of the CO 2 RR production reported (391 mg h −1 cm 2 ) was achieved at a current density of 500 mA cm −2 with formate FE of 91 % at high CO 2 pressure.
Type of Medium:
Online Resource
ISSN:
1433-7851
,
1521-3773
DOI:
10.1002/anie.201810538
Language:
English
Publisher:
Wiley
Publication Date:
2018
detail.hit.zdb_id:
2011836-3
detail.hit.zdb_id:
123227-7