期刊
ELECTROCHIMICA ACTA
卷 434, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2022.141331
关键词
SnSe2-graphene nanosheets; ElectrocatalyticCO2 reduction; Formate; Faraday efficiency
资金
- National Natural Science Foundation of China [21605084]
- Natural Science Foundation for Young Scholars of Jiangsu Province, China [BK20160983]
- Research Start-up Funds for Talent Scholars of Nanjing Tech University [39837104]
By developing a SnSe2-graphene composite catalyst, efficient electrocatalytic reduction of CO2 to formate has been achieved, with a maximum Faraday efficiency of 95.1% under optimal conditions.
Electrocatalytic reduction of CO2 to formate is an extremely attractive route. Here, we developed a SnSe2-gra-phene composite catalyst, and SnSe2 nanosheets were linked to graphene by Sn-O-C bonds to form complicated hierarchical nanosheet structure. Due to the intrinsic activity of SnSe2 and the modification of graphene, the catalyst performed excellent electrocatalytic efficacy for the reduction of CO2 to formate, with a maximum Faraday efficiency up to 95.1% at-0.9 V (vs. RHE) and a current density of 11.8 mA cm-2 under the optimal conditions. Kinetic experiments indicated that the SnSe2-graphene composite achieved efficient formate selec-tivity for CO2 reduction by increasing the initial transfer rate of electrons to the CO2 molecule.
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