Pyro-electrolytic water splitting for hydrogen generation

Zhang, Yan; Kumar, Santosh; Marken, Frank; Kraśny, Marcin J.; Roake, Eleanor; Eslava, Salvador; Dunn, Steve; Como, Enrico Da; Bowen, Chris

doi:10.1016/j.nanoen.2019.01.030

Cited by 54 publications

(38 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, water splitting driven by pyroelectric element attracts much attention for it provides an alternative approach to generate H 2 from instantaneous low-grade waste heat or natural temperature variations [184][185][186][187][188]. For instance, Xie and Brown et al proposed to apply pyroelectric effect to produce a large enough electric potential between two electrodes for water splitting into H 2 and O 2 gas.…”

Section: Water Splitting Driven By Other Devicesmentioning

confidence: 99%

“…15b-d). As demonstrated, the thickness and the area of PZT sheet played an important role in driving water splitting, where the thickness could be used to guarantee an enough potential to initiate water splitting and the area should be maximized to collect the maximal amount of available surface charge [185]. Therefore, future work could concentrate on the formation of pyroelectric nanostructures to enlarge the surface area of the pyroelectric element or exploring the high heat transfer rates of other pyroelectric materials to increase the magnitude and speed of temperature changes [189][190][191][192].…”

Section: Water Splitting Driven By Other Devicesmentioning

confidence: 99%

“…And many green systems containing photoelectrodes, solar cells, TE devices, TENG devices,Anode∶ CO + 4OH − → CO 2− 3 + 2H 2 O + 2e − Cathode∶ 2H 2 O + 2e − → H 2 + 2OH − Total∶ CO + 2OH − → H 2 + CO 2Schematic of pyroelectric as an external source for water splitting, b polarization-electric field loop of PZT sheet and schematic of the surface pyroelectric charges, c H 2 evolution from external pyroelectric water splitting with working time from 1 to 6 h, d the amount and evolution rate of H 2 and O 2 after 6 h detected from the gas chromatography. Reproduced with permission from Ref [185]…”

mentioning

confidence: 99%

See 2 more Smart Citations

Water Splitting: From Electrode to Green Energy System

et al. 2020

View full text Add to dashboard Cite

HIGHLIGHTS • Bifunctional electrode and electrolytic cell configuration for electrochemical water splitting are reviewed. • The different green energy systems powered water splitting are summarized and discussed. • An outlook of future research prospects for the development of green energy system powered water splitting in practical application process is proposed. ABSTRACT Hydrogen (H 2) production is a latent feasibility of renewable clean energy. The industrial H 2 production is obtained from reforming of natural gas, which consumes a large amount of nonrenewable energy and simultaneously produces greenhouse gas carbon dioxide. Electrochemical water splitting is a promising approach for the H 2 production, which is sustainable and pollution-free. Therefore, developing efficient and economic technologies for electrochemical water splitting has been an important goal for researchers around the world. The utilization of green energy systems to reduce overall energy consumption is more important for H 2 production. Harvesting and converting energy from the environment by different green energy systems for water splitting can efficiently decrease the external power consumption. A variety of green energy systems for efficient producing H 2 , such as two-electrode electrolysis of water, water splitting driven by photoelectrode devices, solar cells, thermoelectric devices, triboelectric nanogenerator, pyroelectric device or electrochemical water-gas shift device, have been developed recently. In this review, some notable progress made in the different green energy cells for water splitting is discussed in detail. We hoped this review can guide people to pay more attention to the development of green energy system to generate pollution-free H 2 energy, which will realize the whole process of H 2 production with low cost, pollution-free and energy sustainability conversion.

show abstract

Section: Water Splitting Driven By Other Devicesmentioning

confidence: 99%

Section: Water Splitting Driven By Other Devicesmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Water Splitting: From Electrode to Green Energy System

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Hydrogen is the cleanest energy in the world and its efficient preparation will determine the sustainability of our society. [ 1–5 ] A water splitting system (WSS), which uses renewable energy such as solar energy to generate electricity and rechargeable batteries to store electricity, is a promising strategy to efficiently harvest hydrogen. [ 6 ] However, currently available WSSs require platinum (Pt) or Pt‐like noble metal electrocatalysts for oxygen reduction reaction (ORR) on the cathode in batteries, as well as oxygen evolution reaction (OER) on the anode and hydrogen evolution reaction (HER) on the cathode in electrolyzer, leaving a challenging issue of their high costs.…”

Section: Introductionmentioning

confidence: 99%

Efficient Water Splitting System Enabled by Multifunctional Platinum‐Free Electrocatalysts

Zhong

Pan

et al. 2021

Adv Funct Materials

View full text Add to dashboard Cite

Tremendous research efforts have been focused on the development of a water splitting system (WSS) to harvest hydrogen fuels, but currently available WSSs are complicated and cost‐ineffective mainly due to the applications of noble platinum or different electrocatalysts. Herein, a novel WSS comprising electricity generation from solar panels, electricity storage in rechargeable zinc–air batteries (ZABs), and water splitting in electrolyzers, enabled by hybrid cobalt nanoparticles/N‐doped carbon embellished on carbon cloth (Co–NC@CC) as multifunctional platinum‐free electrocatalysts is reported. Consequently, the Co–NC@CC electrode presents excellent trifunctional electrocatalytic activity with an onset potential of 0.94 V for oxygen reduction reaction, and an overpotential of 240 and 73 mV to achieve a current density of 10 mA cm−2 for oxygen and hydrogen evolution reactions, respectively. For a proof‐of‐concept application, a rechargeable ZAB assembled from the high‐performance Co–NC@CC air cathode exhibits a high open circuit potential of 1.63 V and a superior energy density of 1051 Wh kg−1Zn. Furthermore, an overall water splitting electrolyzer constructed by the symmetrical Co–NC@CC electrodes delivers a current density of 10 mA cm−2 at a low cell voltage of 1.57 V. Such a solar‐powered WSS can harvest hydrogen day and night, demonstrating a potential for application in sustainable renewable energy.

show abstract

“…Potential applications that have been considered to date include, air purification, 2 water disinfection, 3,4 degradation of water pollutants, [5][6][7][8][9][10][11][12][13][14][15][16] and water splitting for hydrogen generation. [17][18][19][20][21][22][23][24][25][26] For conventional ferroelectric applications such as piezoelectric and pyroelectric transducers that act as energy harvesters, 27 pressure and thermal sensors and ultrasonic devices or actuators, significant effort has been undertaken to develop ferroelectric materials with a high Curie temperature (T c ) 28,29 ; often well above ambient conditions (>100 C). In contrast, the use of ferroelectrics with a low T c (e.g., <100 C) is often restricted for transducer applications due to a lack of thermal stability as a result of the phase transition from a ferroelectric non-centrosymmetric crystal structure to a paraelectric centrosymmetric state above the T c , whereby the polarization level and the ferroelectric, piezoelectric, and pyroelectric properties are lost.…”

Section: Introductionmentioning

confidence: 99%

Thermal Energy Harvesting Using Pyroelectric-Electrochemical Coupling in Ferroelectric Materials

Zhang

Phuong

Roake

et al. 2020

Joule

Self Cite

123

View full text Add to dashboard Cite

Recently, the coupling of ferroelectrics with electrochemical reactions has attracted increasing interest for harvesting waste heat. The change of polarization of a ferroelectric with temperature can be used to influence chemical reactions, especially when the material is cycled near its Curie temperature. In this perspective, we introduce the principle of pyroelectric controlled electrochemical processes by harvesting waste heat energy and explore their potential electrochemical applications, such as water treatment, air purification, and hydrogen generation. As an emerging approach for driving electrochemical reactions, the presence of thermal fluctuations and/or transient waste heat in the environment has the potential to be the primary thermal input for driving the change in polarization of a pyroelectric to release charge for such reactions. There are a number of avenues to explore, and we summarize strategies for forming multi-functional or hybrid materials and future directions such as selecting pyroelectrics with low Curie temperature (<100 C), improved heat conductivity, enhanced surface area or porosity, tailored microstructures, and systems capable of operating over a broader temperature range.

show abstract

Pyro-electrolytic water splitting for hydrogen generation

Cited by 54 publications

References 34 publications

Water Splitting: From Electrode to Green Energy System

Water Splitting: From Electrode to Green Energy System

Efficient Water Splitting System Enabled by Multifunctional Platinum‐Free Electrocatalysts

Thermal Energy Harvesting Using Pyroelectric-Electrochemical Coupling in Ferroelectric Materials

Contact Info

Product

Resources

About