TY - JOUR
T1 - Water-Facilitated Electrodeposition of Neodymium in a Phosphonium-Based Ionic Liquid
AU - Sanchez-Cupido, Laura
AU - Pringle, Jennifer M.
AU - Siriwardana, Amal L.
AU - Unzurrunzaga, Ainhoa
AU - Hilder, Matthias
AU - Forsyth, Maria
AU - Pozo-Gonzalo, Cristina
N1 - Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019/1/17
Y1 - 2019/1/17
N2 - Rare-earth metals are considered critical metals due to their extensive use in energy-related applications such as wind turbines and nickel-metal hybrid batteries found in hybrid electrical vehicles. A key drawback of the current processing methods includes the generation of large amounts of toxic and radioactive waste. Thus the efficient recovery of these valuable metals as well as cleaner processing methods are becoming increasingly important. Here we report on a clean electrochemical route for neodymium (Nd) recovery from [P 6,6,6,14 ][TFSI], trihexyltetradecylphosphonium bis(trifluoromethylsulfonyl)amide which is amplified three times by the presence of water, as evidenced by the cathodic current density and thicker deposits. The role of Nd salt concentrations and water content as an additive in the electrochemistry of Nd 3+ in [P 6,6,6,14 ][TFSI] has been studied. The presence of metallic neodymium in the deposits has been confirmed by X-ray photoelectron spectroscopy.
AB - Rare-earth metals are considered critical metals due to their extensive use in energy-related applications such as wind turbines and nickel-metal hybrid batteries found in hybrid electrical vehicles. A key drawback of the current processing methods includes the generation of large amounts of toxic and radioactive waste. Thus the efficient recovery of these valuable metals as well as cleaner processing methods are becoming increasingly important. Here we report on a clean electrochemical route for neodymium (Nd) recovery from [P 6,6,6,14 ][TFSI], trihexyltetradecylphosphonium bis(trifluoromethylsulfonyl)amide which is amplified three times by the presence of water, as evidenced by the cathodic current density and thicker deposits. The role of Nd salt concentrations and water content as an additive in the electrochemistry of Nd 3+ in [P 6,6,6,14 ][TFSI] has been studied. The presence of metallic neodymium in the deposits has been confirmed by X-ray photoelectron spectroscopy.
KW - Metal recovery
KW - Amides
KW - Deposits
KW - Electrochemistry
KW - X ray photoelectron spectroscopy
KW - Rare earths
KW - Metal recovery
KW - Amides
KW - Deposits
KW - Electrochemistry
KW - X ray photoelectron spectroscopy
KW - Rare earths
UR - http://www.scopus.com/inward/record.url?scp=85060035010&partnerID=8YFLogxK
U2 - 10.1021/acs.jpclett.8b03203
DO - 10.1021/acs.jpclett.8b03203
M3 - Article
C2 - 30620201
AN - SCOPUS:85060035010
SN - 1948-7185
VL - 10
SP - 289
EP - 294
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
IS - 2
ER -
