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Title: DRILL Interface Makes Ion Soft Landing Broadly Accessible for Energy Science and Applications

Journal Article · · Batteries & Supercaps
ORCiD logo [1];  [1];  [2];  [2];  [3];  [4];  [4]
  1. Physical Sciences Division Pacific Northwest National Laboratory Richland WA 99352 USA
  2. School of Engineering Department of Mechanical &, Aerospace Engineering University of Liverpool Liverpool L69 3GQ UK
  3. Department of Chemistry Purdue University West Lafayette IN 47907 USA
  4. School of Mechanical Engineering Georgia Institute of Technology Atlanta GA 30332 USA

Abstract Polyoxometalates (POM) have been deposited onto carbon nanotube (CNT) electrodes using benchtop ion soft landing (SL) enabled by a vortex‐confined electrohydrodynamic desolvation process. The device is based on the dry ion localization and locomotion (DRILL) mass spectrometry interface of Fedorov and co‐workers. By adding electrospray emitters, heating the desolvation gas, and operating at high gas flow rates, it is possible to obtain stable ion currents up to −15 nA that are ideal for deposition. Coupled with ambient ion optics, this interface enables desolvated ions to be delivered to surfaces while excluding solvent and counterions. Electron microscopy of surfaces prepared using the device reveal discrete POM and no aggregation that degrades electrode performance. Characterization of POM‐coated CNT electrodes in a supercapacitor showed an energy storage capacity similar to that achieved with SL in vacuum. For solutions that produce primarily a single ion by electrospray ionization, benchtop SL offers a simpler and less costly approach for surface modification with applications in catalysis, energy storage, and beyond.

Sponsoring Organization:
USDOE
OSTI ID:
1456293
Journal Information:
Batteries & Supercaps, Journal Name: Batteries & Supercaps Vol. 1 Journal Issue: 3; ISSN 2566-6223
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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