Electrochemical performance of NAFION coated electrodes of hydriding combustion synthesized MgNi based composite hydride

TY - JOUR

T1 - Electrochemical performance of NAFION coated electrodes of hydriding combustion synthesized MgNi based composite hydride

AU - Kim, Sae Youn

AU - Chourashiya, M. G.

AU - Park, Choong Nyeon

AU - Park, Chan Jin

N1 - Funding Information: This work was supported by the Basic Research Laboratories (BRL) Program ( 2009-0085441 ) of the National Research Foundation of Korea (NRF) funded by the Korean Ministry of Education, Science and Technology (MEST) and by the Energy Efficiency & Resources Program of the Korea Institute of Energy Technology Evaluation and Planning ( 20112010100110 ) grant funded by the Korea government Ministry of Knowledge Economy.

PY - 2013

Y1 - 2013

N2 - Mg based hydride electrodes in alkaline solution were protected by coating them with hydrogen-permeable NAFION membranes. The electrodes were fabricated by using Mg based hydrides synthesized by hydriding combustion (HC) technique. The hydriding combustion synthesized (HCSed) powders were further ball-milled and fabricated into pellet-type electrodes with and without NAFION coating. The ball-milled HCSed powder showed nearly three times higher surface area (∼15 m2 g-1) than that of the as-HC synthesized powder, and thus provided higher discharge capacity. Furthermore, the ball-milled HCSed electrode with NAFION coating exhibited nearly 400% higher discharge capacity (713 mAh g-1) than that of the un-coated as-HCSed electrode.

AB - Mg based hydride electrodes in alkaline solution were protected by coating them with hydrogen-permeable NAFION membranes. The electrodes were fabricated by using Mg based hydrides synthesized by hydriding combustion (HC) technique. The hydriding combustion synthesized (HCSed) powders were further ball-milled and fabricated into pellet-type electrodes with and without NAFION coating. The ball-milled HCSed powder showed nearly three times higher surface area (∼15 m2 g-1) than that of the as-HC synthesized powder, and thus provided higher discharge capacity. Furthermore, the ball-milled HCSed electrode with NAFION coating exhibited nearly 400% higher discharge capacity (713 mAh g-1) than that of the un-coated as-HCSed electrode.

KW - Electrochemical test

KW - Hydriding combustion

KW - MgNi based composite hydride

KW - NAFION coating

UR - http://www.scopus.com/inward/record.url?scp=84871734972&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2012.11.047

DO - 10.1016/j.matlet.2012.11.047

M3 - 文章

AN - SCOPUS:84871734972

SN - 0167-577X

VL - 93

SP - 81

EP - 84

JO - Materials Letters

JF - Materials Letters

ER -