Direct electrochemical N-doping to carbon paper in molten LiCl-KCl-Li3N

Tian, Donghua; Han, Zhenchao; Wang, Mingyong; Jiao, Shuqiang

doi:10.1007/s12613-020-2026-z

“…Compared with chloride melts, LiF-CaF 2 eutectic melts were selected as the electrolyte because of their high negative potential window [12]. The electrochemical formation behaviors of Pr-Ni [48], Nd-Ni [12], and Dy-Ni [50] were studied in LiF-CaF 2 melts. The result is the same as that in chloride melt, where the Ni 2 RE phase is rapidly formed.…”

Section: Separation and Recovery Of Rees On Reactive Electrodes 21 Description Of Separation/recovery On Reactive Electrodesmentioning

confidence: 99%

Recovery and separation of rare earth elements by molten salt electrolysis

Yin

¹

,

Xue

²

,

Yan

³

et al. 2021

Int J Miner Metall Mater

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With the increasing demand of rare earth metals in functional materials, recovery of rare earth elements (REEs) from secondary resources has become important for the green economy transition. Molten salt electrolysis has the advantages of low water consumption and low hazardous waste during REE recovery. This review systematically summarizes the separation and electroextraction of REEs on various reactive electrodes in different molten salts. It also highlights the relationship between the formed alloy phases and electrodeposition parameters, including applied potential, current, and ion concentration. Moreover, the feasibility of using LiF-NaF-KF electrolyte to recover REEs is evaluated through thermodynamic analysis. Problems related to REE separation/recovery the choice of electrolyte are discussed in detail to realize the low-energy and high current efficiency of practical applications.

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“…[7,8] Meanwhile, metallic materials in the form of platings, functional films, and foils are also processed by electrochemical methods to meet the stringent requirements for processing, catalysis, and energy storage and conversion. [9][10][11][12][13][14][15][16] Depending on the reaction temperature and the electrolytes used in the industrial production process, electrochemical engineering for metal extraction can be divided into three types relying on: room-temperature electrolytes (e.g. aqueous solutions, ionic liquids, or organic solvents; about < 100 °C), high-temperature molten salts (e.g.…”

Section: Introductionmentioning

confidence: 99%

Ultra‐High Temperature Molten Oxide Electrochemistry

Wang

¹

,

Jiao

²

,

Pu

³

et al. 2022

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Recently, the ultra-high temperature electrochemistry (UTE, about > 1000 °C) has emerged, which represents an exploration to extend the temperature limit of human technology in electrochemical engineering. UTE has farreaching impact on revolutionary low-carbon metal extraction and the in situ production of oxygen for deep-space exploration. It is hence of urgency to systematically summarize the development of UTE. In this Review, the basic concepts of UTE and the physicochemical properties of molten oxides are analyzed. The principles in the design of inert anodes for the oxygen evolution reaction in molten oxides are discussed, which forms a solid basis for the in situ production of oxygen from simulated lunar regolith by UTE. Furthermore, liquid metal cathodes for revolutionary titanium extraction and ironmaking/steelmaking are highlighted. With emphasis on the key challenges and perspectives, the Review can provide valuable inspiration for the rapid advancement of UTE.

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“…Particularly, electrochemical engineering is the main or only production technology used to extract or refine non‐ferrous metals such as aluminum (Al), copper (Cu), and zinc (Zn) [7, 8] . Meanwhile, metallic materials in the form of platings, functional films, and foils are also processed by electrochemical methods to meet the stringent requirements for processing, catalysis, and energy storage and conversion [9–16] …”

Section: Introductionmentioning

confidence: 99%

“…[7,8] Meanwhile, metallic materials in the form of platings, functional films, and foils are also processed by electrochemical methods to meet the stringent requirements for processing, catalysis, and energy storage and conversion. [9][10][11][12][13][14][15][16] Depending on the reaction temperature and the electrolytes used in the industrial production process, electrochemical engineering for metal extraction can be divided into three types relying on: room-temperature electrolytes (e.g. aqueous solutions, ionic liquids, or organic solvents; about < 100 °C), high-temperature molten salts (e.g.…”

Section: Introductionmentioning

confidence: 99%

Ultra‐High Temperature Molten Oxide Electrochemistry

Wang

¹

,

Jiao

²

,

Pu

³

et al. 2022

Angewandte Chemie

1

0

View full text Add to dashboard Cite

Recently, the ultra-high temperature electrochemistry (UTE, about > 1000 °C) has emerged, which represents an exploration to extend the temperature limit of human technology in electrochemical engineering. UTE has farreaching impact on revolutionary low-carbon metal extraction and the in situ production of oxygen for deep-space exploration. It is hence of urgency to systematically summarize the development of UTE. In this Review, the basic concepts of UTE and the physicochemical properties of molten oxides are analyzed. The principles in the design of inert anodes for the oxygen evolution reaction in molten oxides are discussed, which forms a solid basis for the in situ production of oxygen from simulated lunar regolith by UTE. Furthermore, liquid metal cathodes for revolutionary titanium extraction and ironmaking/steelmaking are highlighted. With emphasis on the key challenges and perspectives, the Review can provide valuable inspiration for the rapid advancement of UTE.

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Direct electrochemical N-doping to carbon paper in molten LiCl-KCl-Li3N

Cited by 13 publications

References 42 publications

Recovery and separation of rare earth elements by molten salt electrolysis

Recovery and separation of rare earth elements by molten salt electrolysis

Ultra‐High Temperature Molten Oxide Electrochemistry

Ultra‐High Temperature Molten Oxide Electrochemistry

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