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WFRF:(Paulraj Alagar Raj)
 

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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003328nam a2200445 4500
001oai:DiVA.org:su-163151
003SwePub
008181217| | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1631512 URI
040 a (SwePub)su
041 a engb eng
042 9 SwePub
072 7a vet2 swepub-contenttype
072 7a ovr2 swepub-publicationtype
1001 a Chamoun, Myladu Stockholms universitet,Institutionen för material- och miljökemi (MMK)4 aut0 (Swepub:su)mcham
2451 0a Electrochemical Performance and in Operando Charge Efficiency Measurements of Cu/Sn-Doped Nano Iron Electrodes
338 a print2 rdacarrier
520 a Fe-air or Ni-Fe cells can offer low-cost and large-scale sustainable energy storage. At present, they are limited by low coulombic efficiency, low active material use, and poor rate capability. To overcome these challenges, two types of nanostructured doped iron materials were investigated: (1) copper and tin doped iron (CuSn); and (2) tin doped iron (Sn). Single-wall carbon nanotube (SWCNT) was added to the electrode and LiOH to the electrolyte. In the 2 wt. % Cu + 2 wt. % Sn sample, the addition of SWCNT increased the discharge capacity from 430 to 475 mAh g−1, and charge efficiency increased from 83% to 93.5%. With the addition of both SWCNT and LiOH, the charge efficiency and discharge capacity improved to 91% and 603 mAh g−1, respectively. Meanwhile, the 4 wt. % Sn substituted sample performance is not on par with the 2 wt. % Cu + 2 wt. % Sn sample. The dopant elements (Cu and Sn) and additives (SWCNT and LiOH) have a major impact on the electrode performance. To understand the relation between hydrogen evolution and charge current density, we have used in operando charging measurements combined with mass spectrometry to quantify the evolved hydrogen. The electrodes that were subjected to prolonged overcharge upon hydrogen evolution failed rapidly. This insight could help in the development of better charging schemes for the iron electrodes.
650 7a NATURVETENSKAPx Kemix Oorganisk kemi0 (SwePub)104042 hsv//swe
650 7a NATURAL SCIENCESx Chemical Sciencesx Inorganic Chemistry0 (SwePub)104042 hsv//eng
650 7a NATURVETENSKAPx Kemix Materialkemi0 (SwePub)104032 hsv//swe
650 7a NATURAL SCIENCESx Chemical Sciencesx Materials Chemistry0 (SwePub)104032 hsv//eng
653 a Iron electrodes
653 a Cu and Sn-doped iron
653 a SWCNT and LiOH additives
653 a charge efficiency
653 a hydrogen evolution
653 a GC-MS analysis
653 a Inorganic Chemistry
653 a oorganisk kemi
7001 a Paulraj, Alagar Raj4 aut
7001 a Kiros, Yohannes4 aut
7001 a Svengren, Henriku Stockholms universitet,Institutionen för material- och miljökemi (MMK)4 aut0 (Swepub:su)hesv8246
7001 a Noréus, Dagu Stockholms universitet,Institutionen för material- och miljökemi (MMK)4 aut0 (Swepub:su)dag
7001 a Göthelid, Mats4 aut
7001 a Skårman, Björn4 aut
7001 a Vidarsson, Hilmar4 aut
7001 a Johansson, Malin4 aut
7102 a Stockholms universitetb Institutionen för material- och miljökemi (MMK)4 org
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-163151

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