时间:2019-01-04 作者:英语课 分类:Scientific American(八)月


英语课

This is Scientific American’s 60-Second Science. I am Cynthia Graber. This will just take a minute. 


Solar panels typically convert sunlight into electricity or heat. But photosynthetic 1 vegetation converts sunlight into chemical energy. Now M.I.T.’s Daniel Nocera wants to bring photosynthesis 2 to your home. Solar power only works, obviously, when the sun shines. Nocera’s idea is to take solar power and use it to for electrolysis—to break apart water into hydrogen and oxygen—which then could be recombined when needed in a fuel cell. The problem is that current electrolyzer technology takes a lot of energy in a harsh, alkaline environment. That’s because, surprisingly enough, it’s hard to get the oxygen out of the water, not the hydrogen. Nocera designed a new catalyst 3 for that oxygen step that works at room temperature and pressure, in a glass of water. When a current runs through an electrode, phosphate and cobalt in the water form a thin film on that electrode. And O2 bubbles right up. The work appears in the July 31st issue of the journal Science. This system could be paired with another electrode for the hydrogen side. Nocera believes that electrolyzers could be cheap and efficient within a few years. 


Thanks for the minute for Scientific American’s 60-Second Science. I am Cynthia Graber



adj.光合的,促进光合作用的
  • In some plants photosynthetic products are stored in the form polyfructosans. 在有些植物中,光合作用产物是以多聚果糖的形式储藏。
  • Chlorotic or necrotic lesions were evidence of decreased photosynthetic tissues. 缺绿的或坏死的侵蚀斑便是减少了光合组织的证据。
n.光合作用
  • In apple trees photosynthesis occurs almost exclusively in the leaves.苹果树的光合作用几乎只发生在叶内。
  • Chloroplasts are the structures in which photosynthesis happens.叶绿体就是光合作用发生的地方。
n.催化剂,造成变化的人或事
  • A catalyst is a substance which speeds up a chemical reaction.催化剂是一种能加速化学反应的物质。
  • The workers'demand for better conditions was a catalyst for social change.工人们要求改善工作条件促进了社会变革。
标签: SSS electricity
学英语单词
.to
a.o.n.
alexipharmac
aquaponist
arithmetic fault access
Arkville
avolitional
Bacillus aquatilis sulcatus
Beltian orogeny
bend angle
bracket attachment
bunts
calcichordates
cancellation of future performance
CD antigen
chemical drains
Chiba Bank,Ltd.
Clematis nobilis
coastal sedimentology
cobalt(ii) thiocyanate
corridorlike
decimal numeration
development assistance
draba nemorosa l. var hebecarpa ledeb.
egg jelly
elevation of floor level
emergency special session
estimated uncollectible tax liens
family ceratophyllaceaes
femtotechnology
filegate
fingerprint access and searching technique
generalized Poisson distribution
genus lucilias
greenfeed for pigs
Gymnuridae
half round oil stone
heterosporangic
iasos
incompatible action
indicts
isochronal line
latitudinary
limit resolution
Lippmann hologram
lock-step operation
lose hope
macroeconomic variable
main bearing boring tool
Methano, Khersonisos
Michelia lacei
millrows
millstone-quartzite
minimal orbit
nauticas
nougats
once in a while
organic inhibitor
overspill
packing expense
par-value method
parametrium
paratesticular rhabdomyosarcoma
Performance attribution analysis
pesudohyperaldosteronism
picture siganl store
pig-a-back
plastic clot
pollute the environment
portal bridge crane with fixed jib
pressure broadening
principle of ability to pay
program for automatic coding technique
pyrictal
raza
reality principle
resistance to thermal cycling
RPVs
serous papillary cystadenoma
sewing up
seyns
Shady Spring
Shaymenskiy
shut-down procedure
sound-ranging altimeter
speywood
sulibaos
superpsychology
sweet action
switching reactor
systol-
task involvement
thick ice
ticed
titanium vanadium alloy
transfer of building property right
unbarbered
updip
valer
water-alsorbing
whiskyjacks
woodenness