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A Stabilized, Intrinsically Safe, 10% Efficient, Solar‐Driven Water‐Splitting Cell Incorporating Earth‐Abundant Electrocatalysts with Steady‐State pH Gradients and Product Separation Enabled by a Bipolar Membrane
Author(s) -
Sun Ke,
Liu Rui,
Chen Yikai,
Verlage Erik,
Lewis Nathan S.,
Xiang Chengxiang
Publication year - 2016
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201600379
Subject(s) - water splitting , hydrogen , materials science , nanotechnology , photoelectrochemical cell , tandem , chemical engineering , biochemical engineering , catalysis , chemistry , photocatalysis , organic chemistry , electrode , engineering , electrolyte , composite material
An efficient, stable, and intrinsically safe solar water‐splitting device is demonstrated using a III–V tandem junction photoanode, an acid‐stable, earth‐abundant hydrogen evolution catalyst, and a bipolar membrane. The integrated photoelectrochemical cell operates under a steady‐state pH gradient and achieves ≈10% solar‐to‐hydrogen conversion efficiency, >100 h of stability in a large (>1 cm 2 ) photoactive area in relation to most previous reports.