eprintid: 10125077
rev_number: 14
eprint_status: archive
userid: 608
dir: disk0/10/12/50/77
datestamp: 2021-05-19 16:45:53
lastmod: 2021-10-10 22:59:31
status_changed: 2021-05-19 16:45:53
type: article
metadata_visibility: show
creators_name: Hu, Y
creators_name: Yella, A
creators_name: Guldin, S
creators_name: Schreier, M
creators_name: Stellacci, F
creators_name: Graetzel, M
creators_name: Stefik, M
title: High-Surface-Area Porous Platinum Electrodes for Enhanced Charge Transfer
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F43
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: Cobalt-based electrolytes are highly tunable and have pushed the limits of dye-sensitized solar cells, enabling higher open-circuit voltages and new record efficiencies. However, the performance of these electrolytes and a range of other electrolytes suffer from slow electron transfer at platinum counter electrodes. High surface area platinum would enhance catalysis, but pure platinum structures are too expensive in practice. Here, a material-efficient host-guest architecture is developed that uses an ultrathin layer of platinum deposited upon an electrically conductive scaffold, niobium-doped tin oxide (NTO). This nanostructured composite enhances the counter electrode performance of dye-sensitized solar cells (DSCs) using a Co(II/III)BPY3 electrolyte with an increased fill factor and power conversion efficiency (11.26%), compared to analogous flat films. The modular strategy is elaborated by integrating a light scattering layer onto the counter electrode to reflect unabsorbed light back to the photoanode to improve the short-circuit current density and power conversion efficiency.
date: 2014-10-07
date_type: published
publisher: WILEY-V C H VERLAG GMBH
official_url: https://doi.org/10.1002/aenm.201400510
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 972763
doi: 10.1002/aenm.201400510
lyricists_name: Guldin, Stefan
lyricists_id: SGULD10
actors_name: Guldin, Stefan
actors_id: SGULD10
actors_role: owner
full_text_status: public
publication: Advanced Energy Materials
volume: 4
number: 14
pages: 8
citation:        Hu, Y;    Yella, A;    Guldin, S;    Schreier, M;    Stellacci, F;    Graetzel, M;    Stefik, M;      (2014)    High-Surface-Area Porous Platinum Electrodes for Enhanced Charge Transfer.                   Advanced Energy Materials , 4  (14)      10.1002/aenm.201400510 <https://doi.org/10.1002/aenm.201400510>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10125077/1/Porous%20Platinum_presubmission_YH%20Adanced%20energy%20materials.pdf