A review of progress in proton ceramic electrochemical cells: material and structural design, coupled with value-added chemical production

Wang, Yakun; Ling, Yeqing; Wang, Bin; Zhai, Guowei; Yang, Guangming; Shao, Zongping; Xiao, Rui; Li, Tao

doi:10.1039/d3ee03121g

Cited by 33 publications

(12 citation statements)

References 419 publications

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“…Besides water-induced exsolution, other methods have been proposed to generate NPs on surface including treating Ba 0.95 Ag 0.5 Co 0.8 Nb 0.1 Ta 0.1 O 3−δ under a reductive atmosphere and voltage-driven exsolution in Ln 0.2 Ba 0.8 Co 0.7 Fe 0.3 O 3−δ . , These works demonstrated that in situ formation of NPs on the surface is an exceptional method to enhance the catalytic activity of an air electrode. However, in previous works, in situ formation of NPs requires a reductive atmosphere or the introduction of vapor for a long time, which is not convenient enough for practical operation. Hence, there is an imminent need to advance a more facile in situ exsolution approach, for example, thermal-induced exsolution, which has attracted increasing attention recently, and the few works focused on it proved its wide potential in the PCC field. , …”

Section: Introductionmentioning

confidence: 99%

A Superior Catalytic Air Electrode with Temperature-Induced Exsolution toward Protonic Ceramic Cells

Zhu,

Zhang,

Shi

et al. 2024

ACS Nano

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Protonic ceramic cells merit extensive exploration, attributed to their innate capabilities for potent and environmentally benign energy conversion. In this work, a temperatureinduced exsolution methodology to synthesize SrCo 0.5 Nb 0.5 O 3−δ (SCN) nanoparticles (NPs) with notably elevated activity on the surface of PrSrCo 1.8 Nb 0.2 O 6−δ (PSCN) is proposed, directly addressing the extant challenge of restrained catalytic activity prevalent in air electrode materials. In situ assessments reveal that SCN NPs commence exsolution from the matrix at temperatures surpassing 900 °C during straightforward calcination processes and maintain stability throughout annealing. Notably, the resultant SCN−PSCN interface facilitates vapor adsorption and protonation processes, which are poised to enhance surface reaction kinetics pertaining to the proton-involved oxygen reduction and evolution reaction (P-ORR and P-OER). A fuel-electrode-supported protonic ceramic cell leveraging SCN−PSCN as the air electrode manifests compelling performance, attaining a peak power density of 1.30 W•cm −2 in the fuel cell modality and a current density of 1.91 A•cm −2 at 1.3 V in the electrolysis mode, recorded at 650 °C. Furthermore, density functional theory calculations validate that the introduction of SCN NPs onto the PSCN surface conspicuously accelerates electrode reaction rates correlated with P-ORR and P-OER, by significantly mitigating energy barriers associated with surface oxygen and vapor dissociation.

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Section: Introductionmentioning

confidence: 99%

A Superior Catalytic Air Electrode with Temperature-Induced Exsolution toward Protonic Ceramic Cells

Zhu,

Zhang,

Shi

et al. 2024

ACS Nano

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“…Solid oxide fuel cells (SOFCs) offer a promising technology for generating clean electricity, which is of paramount importance in the pursuit of carbon neutrality. − In contrast to conventional oxygen ion-conducting SOFCs, protonic ceramic fuel cells (PCFCs) show great potential due to their ability to operate within intermediate temperature ranges (500–700 °C), facilitated by lower activation energy for proton transport. − Steam is generated on the cathode side, preventing fuel dilution on the anode and ensuring resilience against oxidation in the commonly used Ni-based cermet anode . However, the sluggish reaction kinetics of cathode materials at these intermediate temperatures significantly limit PCFC performance. , Therefore, an urgent need arises for the development of cathode materials with high activity and stability to drive the commercialization of PCFCs.…”

Section: Introductionmentioning

confidence: 99%

Dual Self-Assembled Nanocomposite Cathode for Protonic Ceramic Fuel Cells

Yuan,

Tong,

et al. 2024

Energy Fuels

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Protonic ceramic fuel cells (PCFCs) show great promise as a technology for clean power generation. However, the sluggish reaction kinetics and instability of the cathodes continue to impede their commercialization. Here, we report a multiphase nanocomposite produced through dual self-assembly, which serves as a highly active and durable cathode for PCFCs. During cathode sintering, self-assembly takes place to create a composite consisting of PrNi0.5Co0.5O3‑δ (PNC), BaCe0.7Zr0.1Y0.2O3‑δ (BCZY), and PrO x nanoparticles. Compared to the single-phase PNC cathode, this cathode demonstrates enhanced performance with a reduction of 49.1% in ohmic resistance and 48.5% in polarization resistance at 700 °C. This outcome is attributed to improved oxygen surface exchange kinetics and electrolyte–cathode interface strength. Furthermore, the self-assembled cathode in the single cell exhibits a 33.3% increase in power output relative to that of the PNC cathode cell. More interestingly, the cell displays performance activation during 400 h of operation, resulting in a power output increase of 27.5%. The cathode is revealed to be further self-assembled during operation in the post-mortem analysis, featuring an in situ-formed needle-like nanocomposite composed of BaPrO3 and BCZY. This work presents an innovative approach to nanocomposite self-assembly for potential use in PCFC cathode applications.

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“…Protonic ceramic electrochemical cells have been increasingly considered as a promising technology to achieve the carbon-neutral energy cycle via direct conversion of renewable power into hydrogen. 1–4 In the fuel cell mode, the chemical energy in stored hydrogen is effectively transformed into a new form of power, with water being the only byproduct. This process avoids carbon emissions.…”

Section: Introductionmentioning

confidence: 99%

A robust protonic ceramic fuel cell with a triple conducting oxygen electrode under accelerated stress tests

Zheng,

Bian,

Ding

2024

Mater. Adv.

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A review of progress in proton ceramic electrochemical cells: material and structural design, coupled with value-added chemical production

Abstract: Improved performance of proton ceramic electrochemical cells (PCECs) through material development and structural design, and application of PCECs for efficient energy conversion render them promising for clean energy and sustainable development.

Cited by 33 publications

References 419 publications

A Superior Catalytic Air Electrode with Temperature-Induced Exsolution toward Protonic Ceramic Cells

A Superior Catalytic Air Electrode with Temperature-Induced Exsolution toward Protonic Ceramic Cells

Dual Self-Assembled Nanocomposite Cathode for Protonic Ceramic Fuel Cells

A robust protonic ceramic fuel cell with a triple conducting oxygen electrode under accelerated stress tests

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