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期刊论文 2

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2021 2

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Revisiting solar hydrogen production through photovoltaic-electrocatalytic and photoelectrochemical water splitting

《能源前沿(英文)》 2021年 第15卷 第3期   页码 596-599 doi: 10.1007/s11708-021-0745-0

摘要: Photoelectrochemical (PEC) water splitting is regarded as a promising way for solar hydrogen production, while the fast development of photovoltaic-electrolysis (PV-EC) has pushed PEC research into an embarrassed situation. In this paper, a comparison of PEC and PV-EC in terms of efficiency, cost, and stability is conducted and briefly discussed. It is suggested that the PEC should target on high solar-to-hydrogen efficiency based on cheap semiconductors in order to maintain its role in the technological race of sustainable hydrogen production.

关键词: hydrogen production     photovoltaic     electrocatalysis     photoelectrocatalysis     water splitting    

Enhancing the photoelectrochemical performance of p-silicon through TiO coating decorated with mesoporous MoS

《能源前沿(英文)》 2021年 第15卷 第3期   页码 772-780 doi: 10.1007/s11708-021-0783-7

摘要: MoS2 is a promising electrocatalyst for hydrogen evolution reaction and a good candidate for cocatalyst to enhance the photoelectrochemical (PEC) performance of Si-based photoelectrode in aqueous electrolytes. The main challenge lies in the optimization of the microstructure of MoS2, to improve its catalytic activity and to construct a mechanically and chemically stable cocatalyst/Si photocathode. In this paper, a highly-ordered mesoporous MoS2 was synthesized and decorated onto a TiO2 protected p-silicon substrate. An additional TiO2 necking was introduced to strengthen the bonding between the MoS2 particles and the TiO2 layer. This meso-MoS2/TiO2/p-Si hybrid photocathode exhibited significantly enhanced PEC performance, where an onset potential of +0.06 V (versus RHE) and a current density of −1.8 mA/cm2 at 0 V (versus RHE) with a Faradaic efficiency close to 100% was achieved in 0.5 mol/L H2SO4. Additionally, this meso-MoS2/TiO2/p-Si photocathode showed an excellent PEC ability and durability in alkaline media. This paper provides a promising strategy to enhance and protect the photocathode through high-performance surface cocatalysts.

关键词: photoelectrocatalysis     hydrogen evolution     Si photocathode     mesoporous MoS2    

标题 作者 时间 类型 操作

Revisiting solar hydrogen production through photovoltaic-electrocatalytic and photoelectrochemical water splitting

期刊论文

Enhancing the photoelectrochemical performance of p-silicon through TiO coating decorated with mesoporous MoS

期刊论文