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Title: Potassium-chemical synthesis of 3D graphene from CO 2 and its excellent performance in HTM-free perovskite solar cells

The conversion of greenhouse gas CO 2 into novel materials is the most promising approach to solve greenhouse gas issues. In this paper, we report for the first time the reaction of potassium with CO 2 to synthesize three-dimensional honeycomb-like structured graphene (3DHG). Furthermore, 3DHG exhibited excellent performance as a counter electrode for hole transport material (HTM)-free perovskite solar cells, leading to a power conversion efficiency of 10.06%. Finally, this work constitutes a new aspect of potassium chemistry for material synthesis from a greenhouse gas and the generation of electrical energy from sunlight.
Authors:
 [1] ;  [2] ; ORCiD logo [3] ;  [2] ;  [4] ;  [5] ;  [6] ; ORCiD logo [1]
  1. Michigan Technological Univ., Houghton, MI (United States)
  2. Tongji Univ., Shanghai (China)
  3. Shanghai Jiao Tong Univ. (China)
  4. Nanchang Univ. (China)
  5. National Scientific and Technical Research Council (CONICET), San Luis (Argentina)
  6. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Report Number(s):
BNL-114319-2017-JA
Journal ID: ISSN 2050-7488
Grant/Contract Number:
SC0012704; PRF-51799-ND10
Type:
Accepted Manuscript
Journal Name:
Journal of Materials Chemistry. A
Additional Journal Information:
Journal Volume: 5; Journal Issue: 17; Journal ID: ISSN 2050-7488
Publisher:
Royal Society of Chemistry
Research Org:
Michigan Technological Univ., Houghton, MI (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC); ACS Petroleum Research Fund (United States)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 14 SOLAR ENERGY
OSTI Identifier:
1392267