Tech Briefs Magazine - April 2022 - 29
Anode Material for Safer Fast-Charging Batteries
The material enables lithium-ion batteries to be safely recharged within minutes for
thousands of cycles.
University of California, San Diego, CA
C
urrently, two materials are used as anodes
in most commercially available
lithium-ion batteries that power items like
cellphones, laptops, and electric vehicles.
The most common, a graph ite anode, is
extremely energy dense - a lithium-ion
battery with a graphite anode can power
a car for hundreds of miles without needing
to be recharged; however, recharging
a graphite anode too quickly can result
in fire and explosions due to a process
called lithium metal plating. A safer alternative,
the lithium titanate anode, can be
re charged rapidly but results in a significant
decrease in energy density, which
means the battery needs to be recharged
more frequently.
Researchers have developed a new
anode material that enables lithium-ion
batteries to be safely recharged within
minutes for thousands of cycles. Known
as a disordered rocksalt, the new anode
is made up of earth-abundant lithium, vanadium,
and oxygen atoms arranged in a
similar way as ordinary kitchen table salt,
but randomly. It is promising for commercial
applications where both high energy
density and high power are desired such
as electric cars, vacuum cleaners, or drills.
This new disordered rocksalt anode -
- sits in an important middle
ground: it is safer to use than graphite
yet offers a battery with at least 71 perLi3
O5
V2
cent more energy than lithium titanate.
It has a much lower voltage, and therefore,
much improved energy density over
current commercialized fast-charging
lithium-titanate anodes.
The disordered rocksalt anode could
reversibly cycle two lithium ions at an average
voltage of 0.6 V - higher than the
0.1 V of graphite - eliminating lithium
metal plating at a high charge rate makes
We were too.
That's why we invented
the wave spring.
* Optimize Application Space & Weight
* Industry-Specialized Design Support
* Large Selection from Stock
* Easy to Customize
a
c
b
Crest-to-Crest® Wave Springs
Litet
O
The crystal structure of disordered rocksalt
(Li3
V2O5
). The red balls represent O, the blue
tetrahedron represents Li in tetrahedral sites,
and the green octahedron represents the Li/V
shared octahedral sites. (Photo: UCSD)
Tech Briefs, April 2022
Request Free Samples at 847-719-5900 or smalley.com
Free Info at http://info.hotims.com/82320-749
29
Li/Voct
TB Power Energy 0422_1.indd 29
Cov
ToC
3/16/22 4:09 PM
SICK OF
COIL SPRINGS?
http://info.hotims.com/82320-749
http://info.hotims.com/82320-844
Tech Briefs Magazine - April 2022
Table of Contents for the Digital Edition of Tech Briefs Magazine - April 2022
Tech Briefs Magazine - April 2022 - Intro
Tech Briefs Magazine - April 2022 - Sponsor
Tech Briefs Magazine - April 2022 - Cov1
Tech Briefs Magazine - April 2022 - Cov2
Tech Briefs Magazine - April 2022 - 1
Tech Briefs Magazine - April 2022 - 2
Tech Briefs Magazine - April 2022 - 3
Tech Briefs Magazine - April 2022 - 4
Tech Briefs Magazine - April 2022 - 5
Tech Briefs Magazine - April 2022 - 6
Tech Briefs Magazine - April 2022 - 7
Tech Briefs Magazine - April 2022 - 8
Tech Briefs Magazine - April 2022 - 9
Tech Briefs Magazine - April 2022 - 10
Tech Briefs Magazine - April 2022 - 11
Tech Briefs Magazine - April 2022 - 12
Tech Briefs Magazine - April 2022 - 12A
Tech Briefs Magazine - April 2022 - 12B
Tech Briefs Magazine - April 2022 - 12C
Tech Briefs Magazine - April 2022 - 12D
Tech Briefs Magazine - April 2022 - 13
Tech Briefs Magazine - April 2022 - 14
Tech Briefs Magazine - April 2022 - 15
Tech Briefs Magazine - April 2022 - 16
Tech Briefs Magazine - April 2022 - 17
Tech Briefs Magazine - April 2022 - 18
Tech Briefs Magazine - April 2022 - 19
Tech Briefs Magazine - April 2022 - 20
Tech Briefs Magazine - April 2022 - 21
Tech Briefs Magazine - April 2022 - 22
Tech Briefs Magazine - April 2022 - 23
Tech Briefs Magazine - April 2022 - 24
Tech Briefs Magazine - April 2022 - 25
Tech Briefs Magazine - April 2022 - 26
Tech Briefs Magazine - April 2022 - 27
Tech Briefs Magazine - April 2022 - 28
Tech Briefs Magazine - April 2022 - 29
Tech Briefs Magazine - April 2022 - 30
Tech Briefs Magazine - April 2022 - 31
Tech Briefs Magazine - April 2022 - 32
Tech Briefs Magazine - April 2022 - 33
Tech Briefs Magazine - April 2022 - 34
Tech Briefs Magazine - April 2022 - 35
Tech Briefs Magazine - April 2022 - 36
Tech Briefs Magazine - April 2022 - 37
Tech Briefs Magazine - April 2022 - 38
Tech Briefs Magazine - April 2022 - 39
Tech Briefs Magazine - April 2022 - 40
Tech Briefs Magazine - April 2022 - 41
Tech Briefs Magazine - April 2022 - 42
Tech Briefs Magazine - April 2022 - 43
Tech Briefs Magazine - April 2022 - 44
Tech Briefs Magazine - April 2022 - 45
Tech Briefs Magazine - April 2022 - 46
Tech Briefs Magazine - April 2022 - 47
Tech Briefs Magazine - April 2022 - 48
Tech Briefs Magazine - April 2022 - 49
Tech Briefs Magazine - April 2022 - 50
Tech Briefs Magazine - April 2022 - 51
Tech Briefs Magazine - April 2022 - 52
Tech Briefs Magazine - April 2022 - 53
Tech Briefs Magazine - April 2022 - 54
Tech Briefs Magazine - April 2022 - 55
Tech Briefs Magazine - April 2022 - 56
Tech Briefs Magazine - April 2022 - Cov3
Tech Briefs Magazine - April 2022 - Cov4
Tech Briefs Magazine - April 2022 - MD-Cov1
Tech Briefs Magazine - April 2022 - MD-Cov2
Tech Briefs Magazine - April 2022 - MD-1
Tech Briefs Magazine - April 2022 - MD-2
Tech Briefs Magazine - April 2022 - MD-3
Tech Briefs Magazine - April 2022 - MD-4
Tech Briefs Magazine - April 2022 - MD-5
Tech Briefs Magazine - April 2022 - MD-6
Tech Briefs Magazine - April 2022 - MD-6A
Tech Briefs Magazine - April 2022 - MD-6B
Tech Briefs Magazine - April 2022 - MD-6C
Tech Briefs Magazine - April 2022 - MD-6D
Tech Briefs Magazine - April 2022 - MD-7
Tech Briefs Magazine - April 2022 - MD-8
Tech Briefs Magazine - April 2022 - MD-9
Tech Briefs Magazine - April 2022 - MD-10
Tech Briefs Magazine - April 2022 - MD-11
Tech Briefs Magazine - April 2022 - MD-12
Tech Briefs Magazine - April 2022 - MD-13
Tech Briefs Magazine - April 2022 - MD-14
Tech Briefs Magazine - April 2022 - MD-15
Tech Briefs Magazine - April 2022 - MD-16
Tech Briefs Magazine - April 2022 - MD-17
Tech Briefs Magazine - April 2022 - MD-18
Tech Briefs Magazine - April 2022 - MD-19
Tech Briefs Magazine - April 2022 - MD-20
Tech Briefs Magazine - April 2022 - MD-Cov3
Tech Briefs Magazine - April 2022 - MD-Cov4
https://www.nxtbook.com/smg/techbriefs/24TB04
https://www.nxtbook.com/smg/techbriefs/24TB03
https://www.nxtbook.com/smg/techbriefs/24TB02
https://www.nxtbook.com/smg/techbriefs/24TB01
https://www.nxtbook.com/smg/techbriefs/23TB12
https://www.nxtbook.com/smg/techbriefs/23TB11
https://www.nxtbook.com/smg/techbriefs/23TB10
https://www.nxtbook.com/smg/techbriefs/23TB09
https://www.nxtbook.com/smg/techbriefs/23TB08
https://www.nxtbook.com/smg/techbriefs/23TB07
https://www.nxtbook.com/smg/techbriefs/23TB06
https://www.nxtbook.com/smg/techbriefs/23TB05
https://www.nxtbook.com/smg/techbriefs/23TB04
https://www.nxtbook.com/smg/techbriefs/23TB03
https://www.nxtbook.com/smg/techbriefs/23TB02
https://www.nxtbook.com/smg/techbriefs/23TB01
https://www.nxtbook.com/smg/Testing/22TB12
https://www.nxtbook.com/smg/techbriefs/22TB12
https://www.nxtbook.com/smg/techbriefs/22TB11
https://www.nxtbook.com/smg/techbriefs/22TB10
https://www.nxtbook.com/smg/techbriefs/22TB09
https://www.nxtbook.com/smg/techbriefs/22TB08
https://www.nxtbook.com/smg/techbriefs/22TB07
https://www.nxtbook.com/smg/techbriefs/22TB06
https://www.nxtbook.com/smg/techbriefs/22TB05-P
https://www.nxtbook.com/smg/techbriefs/22TB05-D
https://www.nxtbook.com/smg/techbriefs/22TB04
https://www.nxtbook.com/smg/techbriefs/22TB03
https://www.nxtbook.com/smg/techbriefs/22TB02
https://www.nxtbook.com/smg/techbriefs/22TB01
https://www.nxtbook.com/smg/techbriefs/21TB12
https://www.nxtbook.com/smg/techbriefs/21TB11
https://www.nxtbook.com/smg/techbriefs/21TB10
https://www.nxtbook.com/smg/techbriefs/21TB09
https://www.nxtbook.com/smg/techbriefs/21TB08
https://www.nxtbook.com/smg/techbriefs/21TB07
https://www.nxtbook.com/smg/techbriefs/21TB06
https://www.nxtbook.com/smg/techbriefs/21TB05
https://www.nxtbook.com/smg/techbriefs/21TB04
https://www.nxtbook.com/smg/techbriefs/21BT03
https://www.nxtbook.com/smg/techbriefs/21TB02
https://www.nxtbookmedia.com