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A new ternary Sn–Ni–P anode material for Li-ion batteries shows high reversible capacity and excellent coulombic efficiency, with an initial discharge capacity and charge capacity of 785.0 After the 100 th discharge–charge cycling, capacity retention is 94.2% mAh g -1 and 567.8 mAh g -1 , respectively.
Researchers at Nanjing University (China) have introduced a new layered C2/m oxide—Li 2 Ni 0.2 Compared with Li 2 MnO 3 (LMO), LNMR displays superior capacity, a more stable capacity retention rate, higher energy density and average discharge voltage. In such materials, 1/3 of the TM sites are occupied by Li phase.
A team led by researchers at Chungnam National University (S. Korea) has developed a novel high-voltage electrolyte additive, di-(2,2,2 trifluoroethyl)carbonate (DFDEC), for use with the promising lithium-rich layered composite oxide high-energy cathode material xLi 2 MnO 3 ·(1-x)LiMO 2 (M = Mn, Ni, Co). O 2 (Li 1.2 O 2 (Li 1.2
Researchers led by Professor Jeff Dahn at Dalhousie University in Canada report that low-voltage NMC cells—particularly those balanced and charged to 3.8V Single crystal Li[Ni 0.5 V) were cycled with charging to either 3.65 V) were cycled with charging to either 3.65 V vs Li + /Li.
A research team in China has developed a new type of electrolyte for high-energy Li-ion batteries with a self-purifying feature that opens a promising approach for electrolyte engineering for next-generation high-energy Li-ion batteries. Electrochemical performance of Li||NMC811 half-cells using different electrolytes. (a)
Researchers at the Helmholtz Institute Ulm (HIU), founded by the Karlsruhe Institute of Technology (KIT) in cooperation with the University of Ulm, have developed a new lithium-metal battery that offers extremely high energy density of 560 Wh/kg—based on the total weight of the active materials—with remarkably good stability.
Simulated zone projection image based on LMNO crystal model with 20% Ni/Li disorder corresponding to blue rectangle. Simulated zone projection image based on LMNO crystal model with 10% Ni/Li disorder corresponding to white rectangle. For example, a layered composite based on lithium nickel manganese oxide Li 1.2
Scientists at Tokyo Institute of Technology (Tokyo Tech), Tohoku University, National Institute of Advanced Industrial Science and Technology, and Nippon Institute of Technology, have demonstrated by experiment that a clean electrolyte/electrode interface is key to realizing high-capacity solid-state lithium batteries (SSLBs). O 4 interfaces.
Researchers in South Korea report the synthesis of high capacity Mn-rich mixed oxide cathode materials for Li-ion batteries. Novel cathode active materials, Li[Li x (Ni 0.3 The newly Mn-rich cathode active materials were then adopted as cathodes to show the benefits for Li-ion rechargeable batteries.
Researchers from the Cockrell School of Engineering at The University of Texas at Austin have developed a cobalt-free high-energy lithium-ion battery, eliminating the cobalt and opening the door to reducing the costs of producing batteries while boosting performance in some ways. graduate Wangda Li. —Li et al.
A team from Tohoku University and Tokyo Tech have addressed one of the major disadvantages of all-solid-state batteries by developing batteries with a low resistance at their electrode/solid electrolyte interface. cm 2 in solid-state Li batteries with Li(Ni 0.5 Structure of the thin-film all-solid-state batteries.
OH) 2 ) design, the battery produces furfuryl alcohol in charging process and produces furoic acid in discharging process, reaching a high open circuit voltage of 1.29 V When charged, standard rechargeable batteries store electricity in their electrodes and feed it into a circuit as they discharge. Resources Li, J.,
Researchers at Argonne National Laboratory have developed a new approach to cobalt-free Li-ion cathodes that avoids some of the problems with other low-cobalt cathode approaches. Mn is abundant, environmentally benign, and less conductive, while Co has limited abundance, is relatively toxic, and becomes metallic on charging.
SEM of Li[Ni 0.64 Mn 0.18 ]O 2 particle with concentration gradient of Ni, Co, and Mn contents. In this material (Li[Ni 0.64 Comparison of cycling performance of half cell based on bulk Li[Ni 0.64 and concentration-gradient material Li[Ni 0.64 From Sun et al. Click to enlarge.
The selected projects, led by universities, national laboratories, and the private sector aim to develop commercially scalable technologies that will enable greater domestic supplies of copper, nickel, lithium, cobalt, rare earth elements, and other critical elements. Feedstocks will include Li/Ni/Ca/Mg-rich igneous and sedimentary minerals.
Cycling characteristics of 700 nm 3D(Si,Ni) at 1C showing a reversible specific capacity of 1,650 mAh/g after 120 cycles of charge/discharge. A 700 nm 3D(Si,Ni) material at 1C showing a reversible specific capacity of 1650 mAh/g after 120 cycles of charge/discharge. Credit: ACS, Gowda et al. Click to enlarge.
Researchers from Hanyang University in Korea and the BMW Group have developed a new fully operational, practical Li-ion rechargeable battery combining high energy density with excellent cycle life. g cm -3 ; a two-sloped full concentration gradient (TSFCG) Li[Ni 0.85 O 2 , Li[Ni 0.85 O 2 (NCM) and Li[Ni 0.8
Out of several candidates that could replace Li in rechargeable batteries, calcium (Ca) stands out as a promising metal. Not only is Ca 10,000 times more abundant than Li, but it can also yield—in theory—similar battery performance. Haesun Park, Chung-Ang University, co-corresponding author. —Prof.
mol l -1 Li 2 SO 4 aqueous solution as electrolyte. Researchers from Fudan University in China and Technische Universität Chemnitz in Germany have developed an aqueous rechargeable lithium battery (ARLB) using coated Li metal as the anode. mol l -1 Li 2 SO 4 aqueous solution as electrolyte, an ARLB is built up.
Researches at Hanyang University in Seoul, S. Korea, have developed a Li-metal battery (LMB) (specifically, a Li/NCM battery) designed with EV operating requirements in mind that they say outperforms LMBs reported in the literature to date. The new LMB is capable of fast charging while delivering a high energy density.
Hongjie Dai and his research lab at Stanford University have developed a prototype that can generate hydrogen fuel from seawater. Negatively charged chloride in seawater salt can corrode the anode, however, limiting the system’s lifespan. Image credit: Courtesy of H. Dai, Yun Kuang, Michael Kenney). to 1 A/cm 2 ) over 1,000 h.
Rather than being solely detrimental, cracks in the cathodes of lithium-ion batteries reduce battery charge time, according to research done at the University of Michigan. Polycrystalline Li(Ni,Mn,Co)O 2 (NMC) secondary particles are the most common cathode materials for Li-ion batteries. Gubow, Riley J.
University of Sydney team advances rechargeable zinc-air batteries with bimetallic oxide–graphene hybrid electrocatalyst. This is due to the lack of electrocatalysts that successfully reduce and generate oxygen during the discharging and charging of a battery. Other two amorphous bimetallic, Ni 0.4 O x and Ni 0.33
Charge and discharge profile of first and second cycles of Li 2 MnSiO 4 samples measured at 45 °C at 0.02C rate. Researchers from Tohoku University, Japan, have developed novel ultrathin Li 2 MnSiO 4 nanosheets for use as a cathode material in lithium-ion batteries. The Li/Li 2 MSiO 4 cells were cycled between 1.5
Schematic illustration of a Li-O 2 cell employing a mesoporous catalytic polymer membrane. A modified Li-O 2 battery with a catalytic membrane showed a stable cyclability for 60 cycles with a capacity of 1000 mAh/g and a reduced degree of polarization (?0.3 Credit: ACS, RYu et al. Click to enlarge.
In particular, they proposed that Li 4 CrTiO 6 and Li 4 CrMnO 6 , in which Cr 6+ oxidation is accessible during lithium extraction, are worthy candidates. (Cr The concept of incorporating a Li 2 MnO 3 component into a conventional layered LiM′O 2 structure has received substantial attention to date.
have developed an analysis method that enables direct observation of electron activity in the cathode material of lithium-ion batteries during charging and discharging. a 100% subsidiary of Nissan Motor Company, developed the analysis method in a joint R&D effort with Tokyo University, Kyoto University and Osaka Prefecture University.
Researchers from the Korea Advanced Institute of Science and Technology (KAIST), with colleagues from the Korea Institute of Energy Research (KIER), Qatar University and major battery manufacturer LG Chem have developed a technique for the delicately controlled prelithiation of SiO x anodes for high-performance Li-ion batteries.
This includes research on appropriate anodes, cathodes, and electrolytes for magnesium (Mg)-, sodium (Na)-, and lithium (Li)-based batteries and novel transition metal oxide- and nitride-based supercapacitor electrode materials. Magnesium is much more abundant in the Earth’s crust, making it less expensive than Li by a factor of 24.
The ability to mitigate degradation mechanisms for Ni-rich NMC and NCA provides insight into a method to enable the performance of high-voltage Li-ion batteries, they concluded. In order to achieve reasonable cycle life utilizing the high capacities gained via high voltage, phase instability is a key problem that must be addressed.
Electrolyte additives can be used to extend cell lifetime by suppressing parasitic reactions between charged electrodes and electrolyte by modifying the solid electrolyte interphase (SEI) at the negative electrode or the passivation layer formed on the positive electrode. V and lower thermal reactivity for the charged graphite electrode.
Researchers at the University of Maryland (UMD), the US Army Research Laboratory (ARL), and Argonne National Laboratory (ANL) have developed a non-flammable fluorinated electrolyte that supports the most aggressive and high-voltage cathodes in a Li-metal battery. Li metal offers one of the highest specific capacities (3,860 mAh g ?1
Researchers at the University of Akron have developed hierarchical porous Mn 3 O 4 /C nanospheres as anode materials for Li-ion batteries. mA/g), excellent ratability (425 mAh/g at 4 A/g), and extremely long cycle life (no significant capacity fading after 3000 cycles at 4A/g) as an anode in a Li-ion battery. Li/Li + ).
Now, researchers led by a team from the University of California San Diego team have determined a mechanism for the cause of the performance-reducing voltage fade in the high-capacity LRLO material called NMC. Here, we directly capture the nucleation of a dislocation network in primary nanoparticles of the high-capacity LRLO material Li 1.2
A team at Nankai University in China has devised high-performance Li-sulfur battery cathode materials consisting of sulfur nanodots (2 nm average) directly electrodeposited on flexible nickel foam; the cathode materials incorporate no carbon or binder. However, the electrochemical inertness of bulk sulfur in the cathode of Li?S
Discharge curves at different rates after charging at 1C. A team of researchers from the Korea Advanced Institute of Science and Technology, Università degli Studi di Milano-Bicocca (Italy), and Stanford University have synthesized ultrathin LiMn 2 O 4 nanowires for use as a Li-ion cathode material offering high power densities.
candidate at Stony Brook University conducting research with the Electrochemical Energy Storage group at Brookhaven Lab, was originally studying how an additive, lithium difluorophosphate (LiPO 2 F 2 ), could be used to improve low-temperature performance of batteries. Sha Tan, a co-first author and Ph.D. Shadike, Z.,
XRD of new Argonne nano-Li 4 Ti 5 O 12 spinel. Argonne, in partnership with EnerDel, recently made uniform and small particle Li 4 Ti 5 O 12 with nano-size primary particles for application in high power batteries using a new proprietary process. Ni 0.175 Co 0.10 Click to enlarge. New high energy composite cathode.
The dissolution of transition metals (TMs) from Li-ion battery cathodes is a major contributor to cell degradation during cycling and aging. Li 3 PO 4 was unique, in that its coatings on oxide cathode materials maintained equilibrium under both lithiated and delithiated conditions.
The traditional design paradigm for Li-ion battery cathodes has been to create compounds in which the amount of extractable Li + is well balanced with an oxidizable transition metal (TM) species (such as Mn, Fe, Co or Ni) to provide the charge-compensating electrons, all contained in an oxide or sulfide host.
As described in an open access paper in Nature Communications , the target material (Li[Li 0.144 Ni 0.136 Co 0.136 Mn 0.544 ]O 2 , denoted as LR-NCM) delivers a discharge capacity as high as 301 mAh g −1 with initial Coulombic efficiency of 93.2%. c) Discharge-rate capacity after charging galvanostatically at 0.1
Researchers from Nanyang Technical University (NTU) in Singapore have shown high-capacity, high-rate, and durable lithium- and sodium-ion battery (LIB and NIB) performance using single-crystalline long-range-ordered bilayered VO 2 nanoarray electrodes. This is important in boosting the high-rate performance in both Li and Na ion storage.
V vs Li/Li + ). In conclusion, we demonstrated that despite tremendous stresses and volume changes involved in charge-discharge cycles, robust performance in silicon based lithium ion batteries is possible by structuring the silicon into arrays of nanotubes. >85%) and stable capacity-retention (>80% after 50 cycles).
A team from Hanyang University (Korea) and the US Department of Energy’s (DOE) Argonne National Laboratory have developed a full concentration gradient (FCG) nickel-rich lithium transition-metal oxide material with a very high capacity (215?mAh?g 1 ) for use as a high-energy cathode in Li-ion batteries. Click to enlarge.
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