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This content will become publicly available on February 28, 2019

Title: Laser Sintering of Printed Anodes for Al-Air Batteries

We report on a 3D printed Al anode for Al-air battery combined with laser sintering method. We verified that laser sintering contributed to effective removal of the organic solvent in the slurry and increased the conductivity of the printed anode. By application of infrared laser sintering, we significantly improved electrical contacts of Al nanoparticles and electrochemical performance of Al-air cells. A Pt/C coated hydrophobic carbon paper was used for air cathode to provide a good electrical contact, an oxygen flow ability, and the water sealing. Gel-style KOH was introduced as the electrolyte and waterways also utilized in the chemical reaction. The laser sintered Al-air battery could provide 239 mAh/g discharge capacity and a 0.95 V operation voltage. Also, a 3D structured anode was fabricated by 3D printing the active material on current collectors to achieve a high mass-loading with active material thickness of 360 μm, 560 μm and 680 μm for 1, 2 and 3 layers 3D printed electrodes. The battery cells provide areal discharge capacities of 1.5 mAh/cm 2, 2.8mAh/cm 2, and 3.23 mAh/cm 2, respectively for 1, 2 and 3 layers-electrodes.
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [5] ; ORCiD logo [6]
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States); Shandong Univ., Jinan (China)
  3. Univ. of Tennessee, Knoxville, TN (United States); Sichuan Univ., Chengdu (China)
  4. CK Technologies, Meridianville, AL (United States)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  6. Univ. of Tennessee, Knoxville, TN (United States); Beijing Univ. of Technology (China)
Publication Date:
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 165; Journal Issue: 3; Journal ID: ISSN 0013-4651
The Electrochemical Society
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
Country of Publication:
United States
OSTI Identifier: