Article
Chemistry, Physical
Qi Zhang, Yuke Li, Eng Tuan Poh, Zhenxiang Xing, Mingsheng Zhang, Meng Wang, Zejun Sun, Jisheng Pan, Sai Vikrama Chaitanya Vummaleti, Jia Zhang, Wei Chen
Summary: In this study, benzo-crown ethers (BCEs) with varying cavity sizes are used as electrolyte additives to promote the growth of Li2O2 in Li-O-2 batteries. The cell with benzo-18-crown-6 ether (B18C6) exhibits the highest discharge capacity of 14948 mAh g(-1). These additives accelerate Li2O2 oxidation, improve reversibility, reduce charge overpotential, and prolong cycle life. Additionally, they also stabilize the Li anode by regulating Li+ migration and electron exchange, reducing dendritic growth and anode corrosion. This work provides insights into designing BCEs as additives for high-performance LOBs.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Lixin Xiong, Neil Qiang Su, Wei-Hai Fang
Summary: This study systematically investigates the self-catalytic effect of in-situ electrochemical cobalt doping of Li2O2 and reveals its potential mechanism for enhancing the performance of lithium-oxygen batteries. Theoretical calculations show that Co impurities in the discharge products serve as active sites to promote the formation of Li3O4, switching the nucleation mechanism. Through a comprehensive investigation of the properties of Co-doped Li2O2 and Li3O4 compounds, it is found that Li3O4 exhibits better charge/mass transport and lower overpotential, leading to improved battery performance.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Yaozu Zhang, Zhenzhen Shen, Rui Wen
Summary: Using in situ atomic force microscopy, this study visualized the Li-O-2 interfacial reactions promoted synergistically by the electrolyte additive K+ and Pt nanoparticles electrode. The Pt nanoparticles electrode promoted the formation of lithium superoxide (LiO2) and K+ assisted its diffusion into the electrolyte, thereby increasing the discharge capacity of the Li-O-2 battery.
CHEMICAL COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Gwangseok Oh, Samuel Seo, Wonkeun Kim, Youngsuk Cho, Hoimin Kwon, Suhyun Kim, Seunghyo Noh, Eunji Kwon, Yeonjong Oh, Jongchan Song, Jiyong Lee, Kyounghan Ryu
Summary: The morphology of Li2O2 discharge products in lithium-air batteries is determined by a seed layer formed by the combination of a cathode and an electrolyte, leading to improved reversibility and cyclability. The formation of a favorable interface between the carbon electrode and electrolyte also enhances oxygen evolution reaction, minimizing electrolyte decomposition. These advancements demonstrate critical progress towards practical applications of lithium-air batteries with good reversibility in pouch-type cell arrangements with 1.34 Ah.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Deqing Cao, Xiaoxiao Shen, Aiping Wang, Fengjiao Yu, Yuping Wu, Siqi Shi, Stefan A. Freunberger, Yuhui Chen
Summary: The redox potentials of mediators can be tuned to accelerate reaction kinetics, leading to efficient cycling of Li-S and Li-O-2 batteries. This acceleration is independent of the type of mediator and electrolyte and is achieved by activating the extraction step of lithium ions/electrons on specific surface facets.
Article
Multidisciplinary Sciences
Si-Wen Ke, Wei Li, Yuming Gu, Jian Su, Yifan Liu, Shuai Yuan, Jing-Lin Zuo, Jing Ma, Ping He
Summary: In this study, bifunctional cathode catalysts for ORR/OER were constructed in a COF platform by incorporating Ni-bis(dithiolene) and Co-porphyrin units. The resulting bimetallic Ni/Co-COF exhibited high surface area, good electrical conductivity, and excellent chemical stability. Li-O2 batteries with the Ni/Co-COF-based cathode showed low discharge/charge potential gap and stable cycling, comparable to PtAu nanocrystals. DFT computations and control experiments revealed the critical role of Ni and Co sites in regulating the Li2O2 deposition.
Article
Engineering, Environmental
Minseok Lee, Yiseul Yoo, Jin Hwan Kwak, Young Soo Yun, Hun-Gi Jung, Dongjin Byun, Si Hyoung Oh, Hee-Dae Lim
Summary: The degree of graphitization and the density of oxygen functional groups on the carbon surface were found to be key factors affecting the electrochemical performance of Li-O-2 batteries.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Electrochemistry
Dong Yuan, Liankun Yin, Yu Wu, Fujie Li, Tianlin Luo, Xiangqun Zhuge, Yibing Li, Zhihong Luo, Kun Luo
Summary: Ultrafine Pd nanoparticles capped by mercaptosuccinic acid (MSA) were used in Li-O-2 batteries as colloidal electrolyte to address the slow decomposition kinetics of Li2O2 and the accumulation of by-products that lead to cathode passivation. The highly dispersed Pd NPs promote the formation of film-like Li2O2 and accelerate the decomposition kinetics while improving the overall performance of the battery.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Yu Zhang, Shuting Zhang, Junguo Ma, Xin Chen, Caiyun Nan, Chen Chen
Summary: In this study, a series of high-efficiency cathode catalysts were demonstrated by loading single-atomic metals (M=Ru, Pd, Pt, Au, Ir) onto Co3O4. The single-atomic metals substituted the central Co atom in the octahedral coordination structure, maintaining its stability. The presence of the single atoms promoted the exposure of highly active Co3+ and provided nucleation sites for Li2O2 deposition. Additionally, the loaded M atoms regulated the dispersion of Li2O2, resulting in a sheet-like morphology that facilitated its decomposition in subsequent charge cycles. This research highlights the effective modulation of active metal oxide by single atoms, collectively enhancing catalytic performance.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Sri Harsha Akella, Muniyandi Bagavathi, Rosy, Daniel Sharon, Capraz Ozgur, Malachi Noked
Summary: The effectiveness of halide-based redox mediators (RMs) in mitigating CO2 evolution during the oxidation processes of Li-O-2 batteries was investigated. The addition of 50 mM LiI to the electrolyte delayed CO2 evolution, observed only after several cycles. In contrast, cells containing 50 mM LiBr in 0.5 M LiTFSI did not show any CO2 evolution during cell cycling. The chemical properties and electrochemical behavior of the halide-based RMs greatly influenced their ability to effectively mediate the oxygen evolution process.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Shaoqing Rao, Ruizhe Wu, Zhu Zhu, Jinsong Wu, Yao Ding, Liqiang Mai
Summary: Compared with traditional lithium-ion batteries and Li-other group VIA elements batteries, Li-Te batteries have high specific volumetric capacity and superior electrical conductivity, making them important for portable electronics and electric vehicles. However, their Achilles’ heel is the huge volume change and dissolution of polytellurides during cycling. In this research, a cathode material based on Te-filled CNTs was synthesized, which showed improved reaction kinetics and electrochemical reversibility. The use of nanoscale cavities in the CNTs stabilized the polytellurides and enhanced the utilization and cycling stability of the cathodes in Li-Te batteries.
Article
Chemistry, Multidisciplinary
Yuxin Wang, Da Han, Feiyu Kang, Dengyun Zhai
Summary: The all-ceramic RuO2@La0.7Ca0.3CuO3 membrane cathode shows an ultra-high capacity in Li-O-2 batteries, with a simple infiltration technique for obtaining a highly active supported RuO2 catalyst. It is recommended to choose a solvent with a high donor number to achieve a much higher capacity.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Christian Prehal, Soumyadip Mondal, Ludek Lovicar, Stefan A. Freunberger
Summary: This study investigates the formation mechanism and influencing factors of Li2O2 in aprotic Li-O-2 batteries. Li2O2 forms as particles via solution-mediated LiO2 disproportionation, indicating limited influence of surface growth under practical conditions. The morphology of Li2O2 particles and achievable capacities depend on species mobilities, true areal rate, and the degree of LiO2 association in solution.
ACS ENERGY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Yoko Hase, Takeshi Uyama, Kiho Nishioka, Juntaro Seki, Kota Morimoto, Nobuhiro Ogihara, Yoshiharu Mukouyama, Shuji Nakanishi
Summary: This study investigates the origin of overpotential in nonaqueous Li-O-2 batteries during charging, revealing a solid-solution type delithiation process and changes in the chemical diffusion coefficient of Li+ ions in Li2-xO2. The results suggest that an intrinsic positive feedback mechanism plays a crucial role in increasing the cell voltage during the first step of charging.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Xiongzhi Yang, Jinzhu Jia, Linghao Sun, Guangsheng Huang, Junli Zhou, Ruanming Liao, Zhonghui Wu, Lin Yu, Zhenbo Wang
Summary: The regeneration of harmful activated sludge into an energy source is a valuable strategy for municipal sludge treatment and recycling. In this study, SiO2-modified N,S auto-doped porous carbon (NSC@SiO2) was successfully obtained through a simple calcination method. The introduction of P-doped NSC@SiO2 (NSPC@SiO2) further enhanced its surface area, pore volume, and carbon defects, making it an excellent sulfur host for lithium-sulfur batteries.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Multidisciplinary Sciences
Yukai Zhuang, Bo Gan, Zhongxun Cui, Ruilian Tang, Renbiao Tao, Mingqiang Hou, Gang Jiang, Catalin Popescu, Gaston Garbarino, Youjun Zhang, Qingyang Hu
Summary: Water in the mantle transition zone and the core-mantle boundary plays a crucial role in Earth's internal processes. This study investigates the electrical conductivity and sound velocity of a specific iron mineral and finds that it matches the characteristics of water channels in the mantle. This provides evidence for active water transportation in the mantle.
Article
Chemistry, Physical
Michele De Bastiani, Giovanni Armaroli, Rawan Jalmood, Laura Ferlauto, Xiaole Li, Ran Tao, George T. Harrison, Mathan K. Eswaran, Randi Azmi, Maxime Babics, Anand S. Subbiah, Erkan Aydin, Thomas G. Allen, Craig Combe, Tobias Cramer, Derya Baran, Udo Schwingenschlogl, Gilles Lubineau, Daniela Cavalcoli, Stefaan De Wolf
Summary: This study investigates the root causes of catastrophic delamination at the top contact in state-of-the-art perovskite/silicon tandem solar cells and identifies the interface between the fullerene electron transport layer and the tin oxide buffer layer as the origin of such delamination. The study shows that the perovskite morphology and roughness, as well as the film processing conditions, play significant roles in the microscopic adhesion of the top layers. These findings highlight the need for new interfacial linking strategies to enable mechanically strong perovskite-based solar cells for commercialization.
ACS ENERGY LETTERS
(2022)
Article
Instruments & Instrumentation
Runze Jiang, Chunyuan Lan, Jinxue Du, Renbiao Tao
Summary: In this study, a series of systematic calibration experiments were conducted on the multihole gasket technique using statistical methods. The pressure deviations among different holes in a gasket were constrained to less than 0.2 GPa at average pressures below 10 GPa. The multihole gasket technique could be widely applied to study water-mineral interactions at high-pressure and high-temperature conditions.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2022)
Article
Materials Science, Multidisciplinary
Chiara Morano, Ran Tao, Ahmed Wagih, Marco Alfano, Gilles Lubineau
Summary: This study focuses on secondary bonded composite/metal joints and explores a toughening approach enabled by a snap-through cracking process, which significantly enhances load bearing capacity and dissipated energy.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Mechanics
Jassem ALYousef, Arief Yudhanto, Ran Tao, Gilles Lubineau
Summary: Repairing damaged composite parts using the scarf technique requires carefully selecting treatment methods for the composite surface. Laser treatment, specifically using a CO2 laser, has shown potential in improving joint strength by altering the surface characteristics. This study investigates the influence of CO2 laser treatment on the surface characteristics and joint strength of carbon fiber-reinforced plastic laminates. The results suggest that a laser fluence of 3.6 J/m(2) is safe and can improve joint strength in certain types of laminates.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Composites
Ping Hu, Ran Tao, Xiaole Li, Gilles Lubineau
Summary: The coupling effect between intralaminar and interlaminar damage makes it difficult to measure the delamination properties of carbon fiber reinforced polymer (CFRP) plies. In this study, an edge effect mitigator is used to isolate the coupling effect and evaluate the delamination properties. The experimental results show that the edge effect mitigator confines the delamination crack and allows for a more objective evaluation of the properties.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Geochemistry & Geophysics
Chao Wang, Renbiao Tao, Jesse B. Walters, Heidi E. Hoefer, Lifei Zhang
Summary: This study investigates the redox evolution and carbon speciation in subduction zones by analyzing fluid inclusions in ultra-high-pressure and high-pressure eclogites. The results demonstrate that the thermal structure and composition of the slab play crucial roles in controlling the redox evolution and changing speciation of carbon in subduction zones.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Mechanics
Xiaole Li, Ran Tao, Yangyang Xin, Gilles Lubineau
Summary: A cassette-like peeling system is developed to overcome the limitations of current peeling standards when evaluating bonding quality of soft-to-rigid assemblies. The system enables self-similar crack propagation and a stationary peeling front, making it compatible with most universal testers and allowing in situ observation.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2022)
Article
Multidisciplinary Sciences
Lijuan Zhang, Lifei Zhang, Ming Tang, Xiao Wang, Renbiao Tao, Cheng Xu, Thomas Bader
Summary: Massive abiotic methane can be produced during prograde HP-UHP metamorphism in cold subduction zone, which may represent one of the largest sources of abiotic CH4 on Earth. Methane (CH4) is a critical but overlooked component in the study of the deep carbon cycle. Here, CH4-rich fluid inclusions in garnet from eclogites in Western Tianshan, China are studied, confirming the abiotic origin of this CH4. The formation and flux of abiotic CH4 in mafic rocks during subduction are poorly understood, but our findings suggest that massive abiotic CH4 was generated during cold subduction at depths of 50-120 km, making it a significant source of CH4.
NATIONAL SCIENCE REVIEW
(2023)
Article
Geochemistry & Geophysics
Chao Wang, Lu'an Ren, Jesse B. B. Walters, Lifei Zhang, Renbiao Tao
Summary: In this study, natural siderite and rhodochrosite were characterized using Raman spectroscopy in an externally heated diamond-anvil cell. The Raman frequency shifts of both minerals were found to be related to pressure and temperature, and the effect of the P-T cross derivative term cannot be neglected. Based on the functional relationship between frequency and pressure/temperature, calibration curves were developed for both minerals. This is significant for studying water-carbonate interaction at high P-T conditions.
AMERICAN MINERALOGIST
(2023)
Article
Geochemistry & Geophysics
Chunyuan Lan, Renbiao Tao, Fang Huang, Runze Jiang, Lifei Zhang
Summary: In this study, the solubility of different carbonates (calcite/aragonite, dolomite, and magnesite) under high-pressure and high-temperature conditions relevant to subduction zones was systematically determined. The dissolution of dolomite was found to be an incongruent process, while magnesite had much lower solubility compared to aragonite and dolomite. Based on the experimental results, the decarbonation fluxes from carbonate dissolution were about three times larger than those from metamorphism in cold or intermediate subducting slabs.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Review
Geosciences, Multidisciplinary
Chao Wang, Renbiao Tao, Jesse B. B. Walters, Tianshi Ren, Jingbo Nan, Lifei Zhang
Summary: This review summarizes the results of petrological, thermodynamic, and experimental investigations on the formation pathways of abiotic organic compounds, including simple hydrocarbon molecules such as CH4 and complex hydrocarbon systems. It also emphasizes the changes and role of organics in geological environments.
ACTA GEOLOGICA SINICA-ENGLISH EDITION
(2023)
Article
Geochemistry & Geophysics
Lu'an Ren, Chao Wang, Xiaowei Li, Renbiao Tao
Summary: We calibrated the Raman shift of synthetic c-BN grains as a P-T sensor for diamond-anvil cell experiments under high-pressure and high-temperature conditions. We found a negative correlation between the Raman shift of c-BN and temperature, and a positive correlation with pressure. We also established a Raman shift P-T sensor for c-BN and tested its stability and signal clarity in water-rock interaction experiments.
AMERICAN MINERALOGIST
(2023)
Article
Chemistry, Physical
Ruslan Melentiev, Ran Tao, Lujain Fatta, Amit K. Tevtia, Nikhil Verghese, Gilles Lubineau
Summary: Electroplating on polymers involves chemical and mechanical interactions of the surface to ensure adhesion. However, the relative contributions of these factors have been debated without quantitative evidence. This study separates the contribution of polymer chemistry by using non-interlocking micro-textures with varied surface area. The results show that chemical adhesion only contributes a minor fraction to the overall adhesion strength in electroplating.
SURFACES AND INTERFACES
(2023)
Article
Geology
Lan ChunYuan, Tao RenBiao, Zhang LiFei, Guo Shun
Summary: More than 98% of global carbon is stored in the Earth's mantle and core. Carbon can be released from the Earth's interior to the surface through magmatism, and it can also enter the Earth's interior through subduction of plates. Different decarbonization mechanisms play a significant role in releasing carbon and influencing CO2 concentration in the Earth's surface system, which can impact the habitability of the Earth. This article summarizes five decarbonization mechanisms and reviews the research progress and problems related to carbon release flux in subduction zones, aiming to inspire new research methods for understanding the deep carbon cycle in subduction zones in the future.
ACTA PETROLOGICA SINICA
(2022)
