Reuters/Rafael Marchante
Alifhafizin - Saintis di Singapura telah mereka bateri sangat
tahan lama yang juga boleh dicas semula 20 kali lebih cepat daripada model
semasa. Pembangunan ini dijangka terlebih dahulu besar seterusnya dalam tenaga
- & boleh menjadi rahmat bagi pengguna kereta elektrik.
Nanyang Technology University (NTU) saintis di
Singapura berkata, mereka telah membangunkan maju bateri litium-ion yang,
sebagai tambahan kepada caj lebih cepat, mempunyai jangka hayat yang lebih
lama. Bateri mereka nampaknya boleh dicas semula 10,000 kali - bermakna ia
berlaku lebih daripada 20 tahun berban-ding dengan orang2 yang konvensional
kini berjalan kira-kira 2 hingga 3 tahun.
BACA lanjut: 'roller coaster Diri':
Tesla Motors memperkenalkan Model S elektrik yang memacu sendiri (Read More: ‘Personal
roller coaster’: Tesla Motors unveils electric Model S that drives itself)
Bateri baru, menurut pemaju, boleh memberi kesan
kepada pelbagai industri, teru-tamanya dalam bidang kenderaan elektrik. Pada
masa ini, mengecas semula ken-deraan ini mengambil masa lebih 4 jam dan bateri
mempunyai jangka hayat yang terhad.
"Kereta elektrik akan dapat meningkatkan
rangkaian mereka secara mendadak, dengan hanya 5 minit pengecasan, yang
setanding dengan masa yang diperlukan untuk mengepam petrol," kata Chen
Xiaodong, seorang profesor madya di Sekolah NTU Bahan Sains dan Kejuruteraan,
untuk Straits Times yang berpangkalan di Singapura.
Ahli-ahli sains menggantikan grafit tradisional
digunakan untuk anod (kutub negatif) bateri dengan bahan gel baru yang
diperbuat daripada titanium dioksida - sesuatu yg terdapat di dlm tanah &
biasanya digunakan sebagai bahan tambahan makanan atau losyen pelindung
matahari yang untuk menyerap sinar ultraungu. Nanostructure yang membantu
mempercepatkan tindak balas kimia yang mem-benarkan pengecasan superfast,
dilaporkan Sains harian.
"Pembuatan ini gel tiub nano baru adalah sangat
mudah," kata Profesor Chen. "Titanium dioksida dan natrium hidroksida
dicampurkan bersama-sama dan dika-cau di bawah suhu yang tertentu. Pengeluar
bateri akan merasa mudah untuk mengintegrasikan gel baru kami ke dalam proses
pengeluaran semasa mereka."
BACA lanjut: Amerika Syarikat
terbesar pembuat kereta elektrik Tesla memberi jauh patennya - tetapi mengapa? (Read
More: US biggest
electric car maker Tesla gives away its patents – but why?)
Satu kertas penyelidikan mengenai subjek ini telah diterbitkan dalam
terbitan terbaru Bahan Termaju, jurnal saintifik antarabangsa yang terkemuka
dalam bidang bahan sains.
NTU profesor Rachid Yazami, salah seorang pereka
cipta grafit litium anod diban-gunkan 34 tahun lalu, kata ciptaan Profesor Chen
adalah terlebih dahulu besar seterusnya dalam teknologi bateri.
"Walaupun kos lithium-ion bateri telah
dikurangkan dgn ketara dan prestasinya bertambah baik sejak Sony ia
dikomersialkan pd tahun 1991, pasaran berkembang pesat ke arah aplikasi baru
dalam mobiliti elektrik dan simpanan tenaga," Profesor Yazami memberitahu Science
Daily.
Pasukan penyelidikan merancang untuk membina sebuah
bateri prototaip berskala besar, tetapi teknologi yg dipaten tlh menarik
minat industri dan Profesor Chen difikirkan bateri cepat-pengisian akan berada
di pasaran dalam tempoh 2 tahun.
ULTRA-fast New BATTERIES
Can RECHARGE 70 percent
in two MINUTES . . .
Scientists in Singapore have designed a highly
durable battery that can also be recharged 20 times faster than current models.
The development is expected to be the next big advance in energy – and could be
a boon for electric car users.
Nanyang Technology University (NTU) scientists in
Singapore say they have developed an advanced lithium-ion battery that, in
addition to charging faster, has a longer lifespan. Their battery can
apparently be recharged 10,000 times – meaning it lasts more than 20 years
compared to the conventional ones currently run about two to three years.
The new battery, according to its developers, could
have an impact on a wide range of industries, particularly in the field of
electric vehicles. Currently, recharging these vehicles takes over four hours
and the batteries have a limited lifespan.
“Electric cars will be able to increase their range
dramatically, with just five minutes of charging, which is on a par with the
time needed to pump petrol,” said Chen Xiaodong, an associate professor at
NTU’s Schools of Materials Science and Engineering, to the Singapore-based
Straits Times.
Scientists replaced the traditional graphite used
for a battery’s anode (negative pole) with a new gel material made from
titanium dioxide – something found in soil and commonly used as a food additive
or in sunscreen lotions to absorb ultraviolet rays. Its nanostructure helps
speed up the chemical reactions that allow for superfast charging, reported
Science Daily.
"Manufacturing this new nanotube gel is very
easy," Professor Chen added. "Titanium dioxide and sodium hydroxide
are mixed together and stirred under a certain temperature. Battery manufacturers
will find it easy to integrate our new gel into their current production
processes."
A research paper on the subject was published in the latest issue of
Advanced Materials, a leading international scientific journal in materials
science.
NTU professor Rachid Yazami, the co-inventor of the
lithium graphite anode developed 34 years ago, said Professor Chen’s invention
is the next big advance in battery technology.
“While the cost of lithium-ion batteries has been
significantly reduced and its performance improved since Sony commercialized it
in 1991, the market is fast expanding towards new applications in electric
mobility and energy storage,” Professor Yazami told Science Daily.
The research team plans to build a large-scale
battery prototype, but the patented technology has already attracted interest
from industry and Professor Chen thinks the fast-charging batteries will hit
the market in two years’ time.
READ MORE: http://on.rt.com/z4qybj
