DataVXACS Applied Nano MaterialsPaper
journal article·2019-01-25Open access

Nanostructuring Strategies To Increase the Photoelectrochemical Water Splitting Activity of Silicon Photocathodes

Thomas R. Hellstern, Adam C. Nielander, Pongkarn Chakthranont, Laurie A. King, Joshua J. Willis, Shicheng Xu, Callisto MacIsaac, Christopher Hahn, Stacey F. Bent, Fritz B. Prinz, Thomas F. Jaramillo

ACS Applied Nano Materials· Volume 2· Issue 1
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Source abstract

Abstract

Photoelectrochemical water splitting is a promising route for sustainable hydrogen production. Herein, we demonstrate a photoelectrode motif that enables a nanostructured large-surface area electrocatalyst without requiring a nanostructured semiconductor surface with the goal of promoting electrocatalysis while minimizing surface recombination. We compare the photoelectrochemical H2 evolution activity of two silicon photocathode nanostructuring strategies: (1) direct nanostructuring of the silicon surface and (2) incorporation of nanostructured zinc oxide to increase the electrocatalyst surface area on planar silicon. We observed that silicon photocathodes that utilized nanostructured ZnO supports outperformed nanostructured silicon electrodes by ∼50 mV at open circuit under 1 sun illumination and demonstrated comparable electrocatalytic activity.
Source: openalex_inverted_index · Quality: baseline

Research context

NanomaterialsElectronic materialsCatalysis & surfaces

OpenAlex topics: Advanced Photocatalysis Techniques · Electrocatalysts for Energy Conversion · Copper-based nanomaterials and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, United States

Nanomaterials for Energy and Catalysis Laboratory, National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Pathum Thani 12120, Thailand

Department of Mechanical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, United States

Department of Material Science and Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, United States

Funding

Office of Energy Efficiency and Renewable Energy · National Science Foundation

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