Results 51 to 60 of about 2,288,729 (253)

Engineering of entropy-driven surface doping towards stabilized high-voltage NCM cathodes: Li (Ni, Co, Mn, Ce, La, Zr, Al) Ox

Materials Reports: Energy
Ni-rich LiNi0.8Mn0.1Co0.1O2 (NCM) cathodes in layered oxide cathodes are attractive for high-energy lithium-ion batteries but suffer from rapid capacity fade and thermal instability at high charge voltages.
Leqi Zhao, Zezhou Lin, Yijun Zhong, Hanwen Liu, Xiao Sun, Yu-Cheng Huang, William D.A. Rickard, Tony Tang, Zongping Shao   +8 more
doaj   +1 more source

Disentangling Bulk and Surface Contributions to Charge and Discharge Fading in High‐Voltage LiCoO2

Advanced Functional Materials, EarlyView.
High‐voltage operation of LiCoO2 accelerates capacity fading through bulk and surface degradation. By introducing a LiTaO3 coating to selectively suppress surface degradation, bulk and surface contributions to charge and discharge fading are decoupled.
Hyungjoon Moon, Sangbin Park, Jaewoo Jung, Seongeun Lee, Chanwoo Jung, Min‐Sik Park, Won‐Sub Yoon   +6 more
wiley   +1 more source

Lithium stoichiometry engineering for fast-charging NMC811 cathodes [PDF]

Materials Advances
Ni-rich LiNi0.8Mn0.1Co0.1O2 (NMC811) cathodes are promising candidates for next-generation high-energy lithium-ion batteries; however, their practical application under fast-charging conditions is severely hindered by cation disorder, sluggish Li ...
Zahra Bahmaei, Zeinab Sanaee, Parisa Vahdatkhah   +2 more
doaj   +1 more source

Balancing Hydrophobicity and Hydrophilicity: Dual Filler‐Engineered Proton Exchange Membranes for Durable, High‐Power Fuel Cells

Advanced Functional Materials, EarlyView.
Polarity‐matched Zr–MOFs program Nafion's nanoscale morphology during solution casting. Hydrophilic UiO‐66 preserves hydrated pathways, while hydrophobic UiO‐67 increases the proton hopping sites by densifying ionic clusters. Combining both fillers yields a membrane that delivers 176 mS cm−1 conductivity, reaches 1.46 W cm−2 under 200 kPa, and triples ...
Yonghwi Cho, Yunseong Ji, Minkyu Choi, Junsu Kim, Yejin Kim, Su Jeong Lee, Wooyoung Choi, Choong Hoo Lee, Ju Yeon Kim, Ohchan Kwon, Hanim Kim, Du Yeol Ryu, Ki Chul Kim, Dae Woo Kim   +13 more
wiley   +1 more source

Oxidation kinetics of a Ni-Cu based cermet at high temperature [PDF]

, 2013
The oxidation kinetics of a cermet composed of Ni–Cu alloy and nickel ferrite was studied by thermogravimetry at 960 °C under oxygen in the range 0.5–77 kPa. After an initial mass increase up to 15 g/m2 due to oxidation of surface metallic particles, the
Palau, Patrice, Abildskov, Jens, Thomsen, Kaj, Herri, Jean-Michel, Chamelot, Pierre, von Solms, Nicolas, Honvault, Christophe, Peres, Véronique, Bouvet, Sylvie, Cassayre, Laurent, Herslund, Peter Jørgensen, Kwaterski, Matthias, Galfré, Aurélie, Brântuas, Pedro, Pijolat, Michèle   +14 more
core   +1 more source

Insight into the Surface Reconstruction-Induced Structure and Electrochemical Performance Evolution for Ni-Rich Cathodes with Postannealing after Washing

, 2023
Ni-rich layered LiNixCoyAlzO2 (NCA, x ≥ 0.8) oxides have attracted wide attention as cathode materials for lithium-ion batteries due to their higher energy density and lower cost.
Feng-Rong He (8400201), Zi-Qi Tian, Wen Yang (235745), Bao-Ping Zheng, Xiao-Dong Guo (4114936), Jun-Yao Cai, Wei Xiang, Bao-Ping Zheng (14597933), Xiao-Dong Guo, Wei Xiang (46368), Feng-Rong He, Zi-Qi Tian (2349700), Wen Yang, Jun-Yao Cai (14597936)   +13 more
core   +1 more source

Tracking Battery Microstructural Degradation Through Directional Thermal Transport Signatures

Advanced Functional Materials, EarlyView.
In lithium‐ion batteries, heat conduction varies between the through‐plane and in‐plane directions because of the cell's layered structure. Therefore, cell degradation influences thermal conductivity in each direction uniquely due to detailed microstructural and compositional changes.
Mohammad Shoghi Tekmedash, Rituparna Mohanty, Jack Leber, David Nageb, Mirella Richard, Sharan Singh, Amin Reihani   +6 more
wiley   +1 more source

Role of structural defects in olivine cathodes [PDF]

, 2012
The high rate capability and structural stability of the olivine phosphates attracted a lot of interest as promising cathode materials for high energy density batteries.
Kandhasamy, S., Nallathamby, K., Minakshi, M.   +2 more
core  

Quantifying Electrochemical Degradation in Single-Crystalline LiNi_{0.8}Mn_{0.1}Co_{0.1}O_{2}–Graphite Pouch Cells through Operando X-Ray and Postmortem Investigations

PRX Energy
Layered nickel-rich lithium transition-metal oxides (LiNi_{x}Mn_{y}Co_{1−x−y}O_{2}; where x ≥ 0.8), with single-crystalline morphology, are promising future high-energy-density Li-ion battery cathodes due to their ability to mitigate particle-cracking ...
Ashok S. Menon, Nickil Shah, James A. Gott, Eleni Fiamegkou, Matthew J. W. Ogley, Galo J. Páez Fajardo, Naoum Vaenas, Ieuan Ellis, N. Ravichandran, P. Cloetens, D. Karpov, J.M. Warnett, Paul Malliband, David Walker, Geoff West, Melanie Loveridge, Louis F.J. Piper   +16 more
doaj   +1 more source

Electrochemical Pathways for Nitrate Conversion to Ammonia: From Environmental Challenges to Ammonia Economy

Advanced Functional Materials, EarlyView.
This perspective presents recent advances in electrocatalytic nitrate reduction, focusing on reaction mechanisms, catalyst design, and electrolyzer configurations. Key challenges in selectivity, stability, and practical wastewater treatment are highlighted, while future directions for advancing sustainable ammonia synthesis and nitrate remediation are ...
Xintong Li, Yunpeng Zuo, Xiaoran Zhang, Jieqiong Shan, Kenneth Mei Yee Leung, Bin Liu, Peter Strasser, Adrian Fisher, Zonglong Zhu, Xin Wang   +9 more
wiley   +1 more source