Article
Energy & Fuels
Kai Sporleder, Marko Turek, Nadine Schueler, Volker Naumann, David Hevisov, Clemens Poeblau, Stephan Grosser, Henning Schulte-Huxel, Jan Bauer, Christian Hagendorf
Summary: The study suggests that high voltage stress at the rear side of bifacial PERC cells can lead to severe power losses, requiring a modified PID test method for evaluation. It is found that both reversible PID-p contributions and irreversible PID-c damages need to be assessed, with the degree of degradation depending sensitively on the solar cell under consideration. Additionally, the most sensitive cell parameter for detecting rear side PID is the measurement of the short circuit current.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Electrochemistry
Taylor R. Garrick, Yong Miao, Eric Macciomei, Miguel Fernandez, John W. Weidner
Summary: Automotive manufacturers are focusing on improving the design of batteries and battery packs to enhance their performance, durability, and range. The ability to predict volume change in battery cells at different stages of aging using virtual tools becomes crucial in the fast-paced electric vehicle industry.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Jaebin Nam, Wonseok Jang, K. K. Rajeev, Ji-Hyun Lee, Yeonho Kim, Tae-Hyun Kim
Summary: A self-healing ion-conductive polymer binder has been developed for high-performance silicon electrodes, forming a crosslinked polymer network based on imine double bonds to improve ion conductivity and provide self-healing capability. Silicon electrodes using this polymer binder exhibit outstanding electrochemical performance, demonstrating improved operation due to the self-healable network and ion-conductive functionality.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Multidisciplinary
Zhiming Zhou, Peirong Lin, Shiqiang Zhao, Huile Jin, Yudan Qian, Xi'an Chen, Xinyue Tang, Qingcheng Zhang, Daying Guo, Shun Wang
Summary: This study synthesizes cuboid-like anhydrous CoC2O4 particles and investigates their application in lithium-ion and lithium-sulfur batteries. The results demonstrate that CoC2O4 can serve as a high-performance electrode material, delivering high reversible capacity, good rate capability, and outstanding cycling stability.
Article
Thermodynamics
Tianze Wang, Jinliang Xu, Zhaofu Wang, Haonan Zheng, Jianhui Qi, Guanglin Liu
Summary: This study presents a comprehensive model for predicting the characteristic sizes, irreversible losses, and efficiencies of supercritical carbon dioxide turbines. The results show that the characteristic sizes follow a scale law, while the losses exhibit different scaling relationships. These findings can be used to optimize turbine design.
Article
Mathematics
Jiangyan Liang, Ning Jiang, Chun Liu, Yiwei Wang, Teng-Fei Zhang
Summary: This paper introduces a reversible Gray-Scott type model with a natural entropy structure and establishes its local well-posedness. It is shown that under certain conditions, the reversible system can converge to the corresponding irreversible system.
JOURNAL OF DIFFERENTIAL EQUATIONS
(2022)
Article
Chemistry, Multidisciplinary
Yiping Cao, Jozef Adamcik, Michael Diener, Janet R. Kumita, Raffaele Mezzenga
Summary: The propensity of proteins to self-assemble into amyloid fibrils with a shared cross-beta architecture is common, but the irreversibility and stability of amyloid fibrils make amyloid-related diseases difficult to treat. Recent studies suggest that certain proteins with low-complexity domains may form labile amyloids. Research shows that reversible and irreversible amyloid fibrils formed from the same full-length protein sequence have differences in core structures and beta-sheet arrangements, highlighting the role of protein folding states in regulating amyloid lability and reversibility.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Song Zhang, Stuart Ferrie, Chandramalika R. Peiris, Xin Lyu, Yan B. Vogel, Nadim Darwish, Simone Ciampi
Summary: Through electrochemical and electrical measurements at a buried interface on highly conductive Si(110) crystal facets, it has been demonstrated that the conversion of silica to silicon becomes reversible at room temperature within a narrow potential window. These findings redefine the potential window for silicon, significantly restricting the conditions under which electroanalytical methods can be applied to study silicon surface reactivity.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
C. Reichhardt, C. J. O. Reichhardt
Summary: The collective dynamics of disks moving through a square array of obstacles under cyclic square wave driving are investigated. The system exhibits a reversible state below a critical density and an irreversible state above it. The critical density depends strongly on the driving angle and the symmetry axis of the obstacle array. The number of cycles required to reach a reversible state increases with density following a power law.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Biophysics
Xiaoyang Zhang, Runshan Kang, Yingjie Liu, Zengshuai Yan, Yan Xu, Tongtao Yue
Summary: Membrane nanotubes, ubiquitous in biology, readily undergo pearling in response to external stimuli. The process of membrane nanotube pearling can be reversible or irreversible depending on the phase segregation state. Lipid redistribution along the nanotube axial direction plays a crucial role in affecting the recovery of the pearled nanotube shape.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Sarah Choi, Anseong Park, Dongho Seo, Won Bo Lee, Ki Min Nam, YongJoo Kim, Jinho Chang
Summary: This article explores the enhancement of redox-reversibility in electroactive species for energy storage systems. The study demonstrates that ascorbic acid can become redox-reversible when confined in microporous carbon regimes. The research uses molecular dynamics simulations to explain the origin of the enhanced redox-reversibility. Furthermore, a prototype energy storage device using redox-reversible ascorbic acid in microporous carbon is demonstrated, showing the feasibility of ascorbic acid as a potential redox electrolyte.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Chuansheng Wang, Meiyue Ding, Tze Chiang Albert Ng, How Yong Ng
Summary: Vibrating membrane (VM) technology has been successfully applied in the vibrating AnMBR (V-AnMBR) for long-term municipal wastewater treatment, showing superior performance in terms of longer filtration time, increased organics removal, and higher methane yields compared to the conventional biogas-scouring AnMBR (C-AnMBR). The study also revealed that VM reduced the fouling layer and minimized biomass breakdowns and fouling contributors, providing in-depth explanations of fouling development and mechanisms of VM for sustainable AnMBR technology.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Weiji Liu, Yuting Feng, Guillaume Delaplace, Christophe Andre, Xiao Dong Chen
Summary: The thermal denaturation of beta-lactoglobulin (BLG) in the presence of calcium ions plays a role in dairy fouling during milk processing. However, the current kinetic model for BLG denaturation oversimplifies the unfolding process and does not consider simultaneous aggregation. This paper proposes a novel approach that suggests the thermal unfolding of BLG is thermodynamically controlled, with a chemical equilibrium between native and unfolded BLG followed by irreversible aggregation. The model was used to examine the effect of calcium ions on the unfolding equilibrium and aggregation process of BLG in whey protein solutions, revealing the protective role of calcium ions in the unfolding equilibrium and their facilitation of BLG aggregation. This approach provides a more realistic understanding of the heat-induced behavior of different BLG species and has the potential to improve fouling prediction during thermal processing.
FOOD HYDROCOLLOIDS
(2022)
Article
Electrochemistry
Jie Xiong, Jian Yang, Guanyi Wang, Tahseen Saeed, Yuzi Liu, Stephen E. Kaczmarek, Wenquan Lu, Qingliu Wu
Summary: Silicon nanoparticles with a thick surficial oxide layer were fabricated and found to require low current density for activation during the first formation cycle. Once activated, the anode can deliver high reversible capacity and exhibit cycling performance at higher current densities.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Yufeng Luo, Zhenhan Fang, Shaorong Duan, Hengcai Wu, Haitao Liu, Yuxing Zhao, Ke Wang, Qunqing Li, Shoushan Fan, Zijian Zheng, Wenhui Duan, Yuegang Zhang, Jiaping Wang
Summary: The slow electrochemical reduction and chemical disproportionation of lithium disulfide (Li2S2) during the discharging process limit the reversible capacity of lithium-sulfur (Li-S) batteries, as they lead to further polysulfide dissolution and lithium sulfide generation without capacity contribution.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Fengping Xiao, Hongkang Wang, Jun Xu, Wenqi Yang, Xuming Yang, Denis Y. W. Yu, Andrey L. Rogach
Summary: A stable sulfur host with single-atom copper catalysts derived from a bimetallic Cu-Zn metal-organic framework is reported, which significantly improves the performance of sulfur-loaded carbon framework used as a cathode in sodium-sulfur batteries, exhibiting superior capacity and rate performance.
ADVANCED ENERGY MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Kaiming Xue, Huimin Wang, Pui-Kit Lee, Shuyu Dong, Denis Y. W. Yu
Summary: By coating a commercial polypropylene separator with polyacrylic acid (PAA) as a chelating polymer and adding barium titanate nanoparticles, the migration of copper ions in copper-lithium batteries can be suppressed effectively, leading to enhanced reversibility and round-trip efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Electrochemistry
Tian Tan, Pui-Kit Lee, Denis Y. W. Yu
Summary: The study compared the thermal behaviors of silicon and silicon monoxide electrodes under different states of charge and electrolyte conditions using DSC, showing that reducing lithiation and incorporating oxygen matrix can reduce heat generation, and additionally, the addition of FEC can reduce reaction heat.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Yao Wang, Yanjun Zhang, Shuyu Dong, Wenchong Zhou, Pui-Kit Lee, Zehua Peng, Chaoqun Dang, Patrick H-L Sit, Junpo Guo, Denis Y. W. Yu
Summary: An all-fluorinated electrolyte is reported that enables stable operation of a graphite||Li dual-ion battery with high voltage and long cycle life.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Qiaohui Duan, Yao Wang, Shuyu Dong, Denis Y. W. Yu
Summary: The addition of Bi2O3 to EMD electrode can suppress the formation of ZnMn2O4 and improve its cyclability. Bi2O3 has the ability to interact with zinc under alkaline conditions and reduce the amount of zincate ions in the electrolyte.
JOURNAL OF POWER SOURCES
(2022)
Article
Materials Science, Multidisciplinary
Kaiming Xue, Yu Zhao, Pui-Kit Lee, Denis Y. W. Yu
Summary: Metal-metal batteries have great potential for large-scale energy storage systems due to their simple manufacturing process and low production costs. However, the migration of metal cations from the cathode to the anode reduces capacity and affects battery stability. To address this issue, a coating of poly (ionic liquid) (PIL) with poly(diallyldimethylammonium bis(trifluoromethanesulfonyl)imide) (PDADMA(+)TFSI(-)) on a commercial polypropylene (PP) separator is utilized as an anion exchange membrane for a copper-lithium battery. The PIL coating improves Coulombic efficiency, long-term cycling stability, and inhibits self-discharge of the battery.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Wenhui Wang, Jiaolong Zhang, Chaolin Li, Xiaohang Kou, Baohua Li, Denis Y. W. Yu
Summary: A stable layered structured cathode with high operating voltage and excellent cycling stability has been reported, demonstrating good cycle performance and rate capability. It shows high capacity utilization and capacity retention when the upper cutoff voltage is not higher than 4.2 V.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yu Zhao, Kaiming Xue, Tian Tan, Denis Y. W. Yu
Summary: As the number of accidents related to battery fire and explosion increases, attention towards the safety of batteries is growing. This paper investigates the thermal stability of dual-ion batteries (DIB), specifically focusing on the use of graphite as the cathode. The study finds that charged DIB with graphite cathode exhibits superior thermal stability compared to traditional lithium-ion batteries (LIB). Furthermore, the thermal stability of graphite cathode depends on the type of intercalation species, and the type of electrolyte also affects the heat generation from the charged electrodes.
Article
Chemistry, Physical
Tian Tan, Pui-Kit Lee, Marium Mayeesha, Nobuyuki Zettsu, Denis Y. W. Yu
Summary: This study developed an electrolyte additive that effectively improves the thermal stability of silicon electrodes. The addition of the additive significantly reduces the heat generation from the silicon electrode without affecting its charge and discharge capacities. The additive acts as a PF5/HF scavenger, stabilizing the electrolyte, and improves the thermal stability of the electrode by forming a protective network covering the electrodes and a SiO2-rich solid-electrolyte interphase.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Hekang Zhu, Tingting Yang, Pui-Kit Lee, Zijia Yin, Yu Tang, Tianyi Li, Leighanne C. Gallington, Yang Ren, Denis Y. W. Yu, Qi Liu
Summary: A facile method is developed to synthesize porous Ni-rich materials, which exhibit high capacity and stability as cathode materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Electrochemistry
Bizhe Su, Hanqin Liang, Xiaohui Zhao, Tao Zhang, Yu Zhou, Denis Y. W. Yu
Summary: Two sodium-rich transition metal oxides, Na2MoO4 and Na2WO4, with the same spinel structure, are studied as cathode materials for Na-ion batteries for the first time. Both compounds can be activated by anionic redox reaction during initial charge, providing reversible capacity between 1.2 and 4.7 V. Na2WO4 exhibits larger Na extraction/insertion and better cycle stability compared to Na2MoO4, likely due to its better structural integrity and stability against oxygen loss.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Qiaohui Duan, Kaiming Xue, Xin Yin, Denis Y. W. Yu
Summary: Recently, the development of reversible zinc anodes in aqueous rechargeable zinc-ion batteries (AZIBs) has attracted much attention due to their low cost and intrinsic safety. In this study, a cationic polymeric ionic liquid (PIL) coating layer is introduced to evenly distribute the charge on the Zn electrode surface, allowing for uniform stripping and deposition of Zn. This strategy enables high-performance Zn-Zn cells and stable cycling of MnO2-Zn full cells.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Kaiming Xue, Yu Zhao, Pui-Kit Lee, Denis Y. W. Yu
Summary: In this study, the researchers demonstrated a Sn-Li battery for the first time, using Sn metal as the cathode and Li metal as the anode in a carbonate-ether based electrolyte. The Sn-Li battery utilizes electrochemical redox reactions to store and release energy. Compared to batteries with Cu and Ni cathodes, the Sn cathode shows better performance in terms of activation energy, polarization, and average Coulombic efficiency.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Yu Zhao, Kaiming Xue, Denis Y. W. Yu
Summary: Dual-ion battery (DIB) with lithium bis(fluorosulfonyl)imide (LiFSI) salt in the electrolyte exhibits excellent stability, rate performance, and capacity retention. The battery shows 94.1% capacity retention after 2000 cycles at 5C and 100.4 mAh g(-1) capacity at 30C with a utilization of 96.3%. The outstanding performance is attributed to a thin cathode-electrolyte interface layer and fast FSI- transport kinetics.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Multidisciplinary Sciences
Dongrui Wang, Jian Chang, Qiyao Huang, Dongdong Chen, Peng Li, Yau-Wai Denis Yu, Zijian Zheng
Summary: The use of nanostructured metallic coatings on cotton fabrics allows for the creation of high-power density and stable wearable LIBs, which exhibit excellent performance under various mechanical deformations.
FUNDAMENTAL RESEARCH
(2021)