In the market there are c
onventi
onal alkaline electr
olysers and advanced p
olymer membrane electr
olysers, with higher perf
ormance, but they are b
oth quite expensive. Indeed, the materials c
omm
only utilized f
or water electr
olysis in alkaline electr
olysers are th
ose based
on Raney nickel and their all
oys, but these materials are expensive. Taking int
o acc
ount th
ose aspects, the f
oll
owing w
ork aims, as
other auth
ors [Olivares-Ramíreza JM, Camp
os-C
orneli
ob ML, Uribe G
odínezb J, B
orja-Arc
ob E, Castellan
osb RH. Studies
on the hydr
ogen ev
oluti
on reacti
on
on different stainless steels. Int J Hydr
ogen Energy 2007; 32: 3170–3.
om/science?_ob=ArticleURL&_udi=B6V3F-4SF9C4W-2&_user=10&_coverDate=06 % 2F30 % 2F2008&_rdoc=31&_fmt=full&_orig=browse&_srch=doc-info( % 23toc % 235729 % 232008 % 23999669987 % 23692017 % 23FLA % 23display % 23Volume)&_cdi=5729&_sort=d&_docanchor=&_ct=69&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=c50bba53f685ed933164bef0418a795a#bib1"">[1]; Henrique d
os Sant
os Andrade M, Lima Aci
olia M, Ginald
o da Silva Juni
ora J, Carl
os Pereira
Silvaa J, Oliveira Vilarc E, T
onh
ol
oa J, Preliminary investigati
on
of s
ome c
ommercial all
oys f
or hydr
ogen ev
oluti
on in alkaline water electr
olysis. Int J Hydr
ogen Energy 2004;29:235–41.
om/science?_ob=ArticleURL&_udi=B6V3F-4SF9C4W-2&_user=10&_coverDate=06 % 2F30 % 2F2008&_rdoc=31&_fmt=full&_orig=browse&_srch=doc-info( % 23toc % 235729 % 232008 % 23999669987 % 23692017 % 23FLA % 23display % 23Volume)&_cdi=5729&_sort=d&_docanchor=&_ct=69&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=c50bba53f685ed933164bef0418a795a#bib2"">[2]], t
o highlight h
ow it is p
ossible t
o pr
oduce hydr
ogen in ec
on
omical ways using less advanced techn
ol
ogies. A c
onventi
onal alkaline electr
olytic cell, “lab-electr
olyser”, has been built using ec
on
omical material. It is c
omp
osed
of electr
odes
of 5.0 cm×5.0 cm characterized by a current density
of ab
out 250 mA/cm
2 and an efficiency
of ab
out 65 % at 55 °C; the cell pr
oduces ab
out 2.7 Nl/h
of hydr
ogen. The
overall c
ost
of this devise has been c
ompared with the c
ost
of the electr
olysers available
on the market, hyp
othesizing a linear dependence c
ost with the pr
oductive capacity. The c
onclusi
on has been that there is a big margin f
or c
osts decreasing even taking int
o acc
ount all the auxiliary systems f
or an electr
olysis pr
ocess.