Crystalline/Amorphous Ni2P/Ho2O3Core/Shell Nanoparticles for Electrochemical Reduction of CO2 to Acetone

Myeong Geun Kim, Youngjo Choi, Eunjoon Park, Cheol Hong Cheon, Nak Kyoon Kim, Byoung Koun Min, Woong Kim

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Electrocatalysts for C3 chemicals, such as acetone in CO2 reduction reaction, are predominantly limited to Cu-based materials. Therefore, it is highly desirable to devise design strategies and synthetic routes for novel electrocatalysts. This study demonstrates an original synthetic route toward uniform crystalline/amorphous Ni2P/Ho2O3 core/shell nanoparticles (CSNPs), which produce acetone with a Faradaic efficiency of 25.4%. To date, this is by far the best performance demonstrated with non-Cu-based electrocatalysts. These excellent CSNP properties can be attributed to their unique heterostructures because Ni2P or Ho2O3 electrocatalysts alone cannot produce acetone. Our demonstration greatly contributes to the development of innovative electrocatalysts, especially for valuable multicarbon (C3+) chemicals.

Original languageEnglish
Pages (from-to)11516-11522
Number of pages7
JournalACS Applied Energy Materials
Issue number12
Publication statusPublished - 2020 Dec 28

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (Grants NRF-2020R1A2C2008798 and NRF-2017M1A2A2046714).

Publisher Copyright:


  • carbon dioxides
  • core/shell
  • electrocatalysts
  • multicarbon products
  • nanoparticles
  • selective etching

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Energy Engineering and Power Technology
  • Electrochemistry
  • Materials Chemistry
  • Electrical and Electronic Engineering


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