Issue 24, 2021

An over 20% solar-to-hydrogen efficiency system comprising a self-reconstructed NiCoFe-based hydroxide nanosheet electrocatalyst and monolithic perovskite/silicon tandem solar cell

Abstract

Using only low-cost materials to achieve a solar-to-hydrogen (STH) efficiency of over 20% for solar water splitting systems is still a major challenge for realizing the practical feasibility of photoelectrochemical (PEC) hydrogen production technology. Utilizing the electrochemical instability of some metal organic framework ligands is a promising strategy to solve the problem of difficulty in controlling the degree of electrochemical self-reconstruction and obtaining high-performance water oxidation catalysts. Here, a monolithic perovskite/silicon tandem solar cell was used for highly efficient standalone solar water splitting. A self-reconstructed NiCoFe-based hydroxide nanosheet electrocatalyst was shown to exhibit remarkable oxygen evolution reaction performance with an overpotential of 191 mV at 10 mA cm−2. Upon pairing with the reported state-of-the-art hydrogen evolution reaction catalyst NiMo4/MnO3−X and a monolithic perovskite/silicon tandem solar cell, an unprecedented STH efficiency of 21.32% was achieved for the unbiased solar water splitting system. This low-cost high-efficiency solar water-splitting system will contribute to realizing the practical applications of PEC hydrogen production technology.

Graphical abstract: An over 20% solar-to-hydrogen efficiency system comprising a self-reconstructed NiCoFe-based hydroxide nanosheet electrocatalyst and monolithic perovskite/silicon tandem solar cell

Supplementary files

Article information

Article type
Paper
Submitted
14 apr 2021
Accepted
25 maj 2021
First published
25 maj 2021

J. Mater. Chem. A, 2021,9, 14085-14092

An over 20% solar-to-hydrogen efficiency system comprising a self-reconstructed NiCoFe-based hydroxide nanosheet electrocatalyst and monolithic perovskite/silicon tandem solar cell

S. Pan, R. Li, Q. Zhang, C. Cui, M. Wang, B. Shi, P. Wang, C. Zhang, B. Zhang, Y. Zhao and X. Zhang, J. Mater. Chem. A, 2021, 9, 14085 DOI: 10.1039/D1TA03126K

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