Article
Chemistry, Physical
Cuixia Cheng, Fang Chen, Guosong Lai
Summary: In this study, hierarchical copper manganese oxide porous micro/nanospheres were synthesized and showed improved lithium storage performance, including high first discharge capacity, satisfactory cycle performance, fair rate capability, fast Li+ diffusion kinetics, and low activation energy. Additionally, the hierarchical micro/nanospheres maintained their integrity after 500 cycles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Hongrun Jin, Jia Li, Zheheng Xu, Zhimi Hu, Kaisi Liu, Kang Liu, Jiangjiang Duan, Bin Hu, Liang Huang, Jun Zhou
Summary: This study presents a successful synthesis of large-sized SLMO nanosheets with high dispersity using intercalation-assisted exfoliation approach. The nanosheets can self-assemble into a flexible and ordered nanochannel film. This method provides convenience for studying confined ion transportation and constructing nanofluidic devices.
SCIENCE CHINA-MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Hangtian Zhu, Yafei An, Minjie Shi, Ziqi Li, Nianting Chen, Cheng Yang, Peng Xiao
Summary: In this study, a novel MnO2/PNC electrode with superior electrochemical performance in IL electrolyte was developed, showcasing large specific capacitance, remarkable rate capability, and favorable electrochemical kinetics.
Article
Biochemical Research Methods
Zhongyun Jiang, Sidi Liu, Xiang Xiao, Guimei Jiang, Qing Qu, Xingxing Miao, Renfei Wu, Rui Shi, Ruochen Guo, Jian Liu
Summary: In this study, a technique using droplet biosensors for the detection of nitric oxide (NO) secreted by a single macrophage under inflammatory stimuli was reported. The approach allows for studying the interactions between bacteria and macrophages at the single cell level.
Article
Chemistry, Multidisciplinary
Zhuodong Tang, Rui Liu, Xueqin Chen, Di Gao, Jian-Rong Zhang, Jun-Jie Zhu, Zixuan Chen
Summary: This study investigates the impact of extracellular electron transfer at the single-cell level on the output limitation of microbial fuel cells. The researchers found that there is fluctuation in bio-current between cells, and the unsynchronized electron transfer capability in the cell population leads to lower average current.
Article
Energy & Fuels
Sumayya C. Pathan, Navajsharif S. Shaikh, Sawanta S. Mali, Jyoti V. Patil, Pranav K. Katkar, Navnath S. Padalkar, Supareak Praserthdam, Chang Kook Hong, Pongsakorn Kanjanaboos, Jasmin S. Shaikh
Summary: In this study, lanthanum-doped iron oxide-integrated graphene oxide (10%La-Fe2O3@GO) as an anode and beta-MnO2 as a cathode material were synthesized successfully through a simple hydrothermal method. The 10%La-Fe2O3@GO exhibited excellent electrochemical performance, attributed to the doping of rare earth La3+ metal ions, providing abundant active sites. The designed aqueous and quasi-solid state ionic liquid-based devices showed high energy density and good cyclability.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Yu-Hsin Chan, Mao-Sung Wu
Summary: The use of well-dispersed nickel catalysts with atomic-scale sizes is an effective approach for maximizing catalytic activity and selectivity for the urea oxidation reaction (UOR). An anodically deposited porous ultrathin film of Birnessite-type manganese oxide on a nickel substrate serves as a catalyst support. The embedded nickel species enhance the catalytic performance and electroactive surface area, leading to improved catalytic rate constant of the UOR.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Zhuofan Shi, Wuchao Li, Xinying Wen, Xiaojiao Wang, Enbo Ren, Deqing Mo
Summary: In this study, three porous nanosphere-structured manganese oxide catalysts were prepared and used for the low-temperature catalytic oxidation of methanol. Different organic reagents were used to modulate the surface morphology of the catalysts. The MnOx-J catalyst showed significantly higher catalytic oxidation activity for methanol than the other catalysts, and the primary reason for this high reactivity was found to be the regulation of 2-methylimidazole, which promoted the formation of structural defects, surface-adsorbed oxygen, and Mn3+ on the catalyst's surface.
Article
Electrochemistry
Daniel R. Baker, Mark W. Verbrugge
Summary: The determination of Open Circuit Voltage requires slow charge and discharge cycles to measure voltage and SOC accurately. Faster scan rates lose accuracy due to irreversible losses, but perturbation methods are proposed to correct measurements and sinusoidal scanning is suggested to increase accuracy. Combining analytic formulas with regression analysis can determine not only OCV but also other resistances in the electrode.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Environmental Sciences
Jiaolong Ying, Xiaopeng Qin, Dongguang Wen, Fuyang Huang, Fei Liu
Summary: This study investigated the reactivity changes of birnessite-coated sand with the fluctuations of ionic strength of infiltration water and found that the higher cation content and pH in groundwater led to lower reactivity compared to rainwater. The passivated birnessite-coated sand's reactivity was recovered instantaneously, restoring approximately one-third of the pristine reactivity. The desorption of Na+ and the removal of lincomycin exhibited a two-stage reaction pattern during recovery, and the LIN removal correlated with Na+ desorption.
ENVIRONMENTAL POLLUTION
(2022)
Article
Engineering, Environmental
Hangtian Zhu, Lingyun Li, Minjie Shi, Peng Xiao, Yuting Liu, Xingbin Yan
Summary: Utilizing ionic liquid as electrolyte, a GQDs@MnO2 composite electrode is constructed for IL-based supercapacitor, which exhibits superior capacitive storage, rapid charge-discharge response and high electrochemical reversibility.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Rui Su, Haiyan Wang, Yunchang Sun, Peizhi Guo
Summary: In this study, two types of MnO2 nanosheets were synthesized and characterized for their electrochemical performance in different electrolytes. It was found that the ultrathin MnO2-NS-N nanosheets exhibited superior capacitance in Na2SO4 electrolyte, while the thick MnO2-NS-K nanosheets showed reasonable performance in both Na2SO4 and MgSO4 electrolytes. Surface capacitance played a significant role in the capacitive behavior of the MnO2 nanosheets.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Diane Rebiscoul, Markus Baum, Kunyu Wang, Samuel Tardif, Vincent Larrey, Bertrand Siboulet, Jean-Francois Dufreche, Francois Rieutord
Summary: Understanding the behavior of ionic solutions in single-digit nanoconfinement is crucial, especially when the system length scale crosses key length scales describing energetics and equilibrium near surfaces. Experimental probing of nanoconfinement provides opportunities to test theoretical predictions. In this study, silica nanochannels of 3 nm and 5 nm heights were used along with a new interface hard X-ray reflectivity analysis technique to directly investigate the transport of solutions containing cations with increasing kosmotropic properties. The results showed that cation adsorption decreases with decreasing confinement size and that nanochannel clogging occurs when ions form ion pairs, potentially leading to phase precipitation. These findings reveal the specific ion effect in single-digit nanoconfinement, which can result in significant changes in solution properties. The new method presented in this study offers new possibilities for characterizing ionic solutions and interfaces in single-digit nanoconfinement.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Hyukhee Cho, KwangJin Park
Summary: By addressing issues such as nonuniform dispersion of conductive agents, electrolyte penetration blocking, and low electrode porosity, the use of CNTs as conductive agents can improve the performance of poly/single-crystalline Ni-rich NCM-based cathode electrodes.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Nima Sasanian, Rajhans Sharma, Quentin Lubart, K. K. Sriram, Marziyeh Ghaeidamini, Kevin D. Dorfman, Elin K. Esbjorner, Fredrik Westerlund
Summary: Amyloid fibrils play a central role in the pathology of many diseases and have significant structural polymorphism. A nanofluidic channel analysis technique was introduced to study single, fluorescently-labeled amyloid fibrils and determine their physical properties. The method allowed for accurate determination of fibril persistence length and revealed differences in physical properties between amyloid-beta(1-42) and alpha-synuclein fibrils.
Review
Energy & Fuels
Brandon Johnston, Hakeem Henry, Nam Kim, Sang Bok Lee
Summary: As lithium-ion batteries reach their limits, magnesium-ion batteries are seen as a promising alternative. Vanadium Oxide (V2O5) is a potential cathode material due to its high capacity, ease of synthesis, and operating voltage. The addition of water to electrolytes can improve magnesium-ion insertion into V2O5, but the challenge lies in leaching water during cycling and protecting the magnesium anode.
FRONTIERS IN ENERGY RESEARCH
(2021)
Article
Chemistry, Applied
Caleb Luvonga, Catherine A. Rimmer, Lee L. Yu, Sang Bok Lee
Summary: The study surveyed total arsenic content and mass fractions of hydrophilic arsenic species in five different marine food types, showing that hydrophilic arsenic species comprise the majority of total arsenic.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2021)
Review
Materials Science, Multidisciplinary
Shoukang Hong, Yang Wang, Nam Kim, Sang Bok Lee
Summary: This review highlights the recent progress of polymer-based all-solid-state lithium-sulfur batteries and discusses the potential of polymer electrolytes in addressing challenges in lithium-sulfur batteries. Possible solutions such as the addition of inorganic fillers and interface modification are introduced, as well as state-of-the-art approaches with performance improvement.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Energy & Fuels
Emily Sahadeo, Gary Rubloff, Sang Bok Lee, Chuan-Fu Lin
Summary: This paper discusses the properties of Al2O3 thin films deposited using atomic layer deposition as an artificial solid electrolyte interphase at the Mg anode. Results show that Al2O3 prevents electrolyte degradation due to the reductive nature of Mg, but undesirable properties such as defects and layer breakdown lead to soft-shorting issues. The study suggests that Al2O3 is not ideal for use as a protective layer, as it cannot prevent soft-shorting and instead hinders Mg growth.
FRONTIERS IN ENERGY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
David O. De Haan, Julia A. Schafer, Eleanor Gillette
Summary: As the demand for research chemists and biochemists with programming skills grows, integrating programming into STEM undergraduate curricula presents challenges. This study demonstrates the successful incorporation of Python programming into a lower division analytical chemistry course, enhancing students' quantitative skills applicability and self-perception of career readiness.
JOURNAL OF CHEMICAL EDUCATION
(2021)
Article
Nanoscience & Nanotechnology
Sri Harsha Akella, Sarah Taragin, Yang Wang, Hagit Aviv, Alexander C. Kozen, Melina Zysler, Longlong Wang, Daniel Sharon, Sang Bok Lee, Malachi Noked
Summary: Zirconium phosphate (ZrxPOy) and lithium-containing zirconium phosphate (LixZryPOz) coatings as artificial cathode-electrolyte interphases (ACEIs) were synthesized on NMC811 using atomic layer deposition. The LixZryPOz coating with Li ions improved capacity retention and rate performance compared to the uncoated NMC811, while largely suppressing degradative parasitic side reactions.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Inorganic & Nuclear
R. Blake Nuwayhid, Daniela Fontecha, Alexander C. Kozen, Angelique Jarry, Sang Bok Lee, Gary W. Rubloff, Keith E. Gregorczyk
Summary: This paper compares the ALD processes and reaction mechanisms of LiPON, NaPON, and KPON thin-film ion conductors. While NaPON and LiPON share similar reaction mechanisms, KPON shows distinct differences in its film composition and likely undergoes an entirely different reaction mechanism. This comprehensive summary of ALD ion conducting APON films highlights the versatility of ALD chemistries for the development of novel thin film ion-conductors.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Physical
Yang Wang, Emily Sahadeo, Sang Bok Lee
Summary: In this study, a thin Mg'-conducting elastomeric artificial solid electrolyte interphase (ASEI) layer was formed by electrochemically polymerizing 1,3-dioxolane (DOL) to pretreat Mg metal anodes, which effectively protected the anodes and improved the cycling performance of Mg-Mg symmetric cells at high current density.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Haotian Wang, Nam Soo Kim, Yueming Song, Paul Albertus, Sang Bok Lee, Gary Rubloff, David Stewart
Summary: This study presents a stress characterization of crystalline Si electrodes using micro-Raman spectroscopy. The phase heterogeneity in the electrodes after initial lithiation was investigated, and a three-phase layer structure was observed. A Raman scan was performed to characterize the stress distribution, which showed that the maximum tensile stress occurred at the interface between different layers. The stress distribution and failure mechanism of the electrodes after delithiation and cycling were also studied.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Electrochemistry
Nam Kim, Marco Casareto, Miles Mowbray, Robert Henry, John Hayden, Gary Rubloff, Sang Bok Lee, Keith E. Gregorczyk
Summary: Wide pore AAOs with ohmic bottom contacts were successfully fabricated on 76 mm Si wafers, and the surface of Al was smoothed using a quiescent electropolishing technique. Standard photolithography was used to define the active area on the Al for anodization, followed by a two-step anodization process to produce wide pore AAOs with pore diameters ranging from 130 +/- 32 nm to 400 +/- 31 nm and an interpore distance of 480 +/- 47 nm. The study also showed that the ordering of the pores depended on the current density rather than the conventional anodization time.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Haotian Wang, Yueming Song, Victoria Castagna Ferrari, Nam Soo Kim, Sang Bok Lee, Paul Albertus, Gary Rubloff, David Murdock Stewart
Summary: It was found experimentally that patterned Si island electrodes with a thickness of 200 nm and a width less than 7 μm can deform elastically. By comparing the model and experimental data, it was observed that the competition of Li diffusion flux leads to Li diffusion towards the edges below the critical size, while a stress plateau inhibits Li diffusion to the edge above the critical size, resulting in stress relief by cracking. This work is of great significance for in situ characterization of electro-chemo-mechanical coupling in battery electrodes, with suggestions for further improvement.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Yang Wang, Jeonghyun Ko, Myungsuk Lee, Sam Klueter, Elias Kallon, John Hoerauf, Daniela Fontecha, Cholho Lee, Gary W. W. Rubloff, Sang Bok Lee, Alexander C. C. Kozen
Summary: The family of thio-LISICON solid-state electrolytes (SSEs) is one of the most promising material systems for solid-state batteries. Among them, Li10GeP2S12 (LGPS) is a promising candidate due to its high ionic conductivity. However, LGPS is unstable when in direct contact with both Li metal and conventional cathode materials. In this study, an elastomeric artificial solid electrolyte interphase (ASEI) was used as a protective layer to improve the stability and performance of Li/LGPS/Li symmetric cells.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yang Wang, Sam Klueter, Myungsuk Lee, Junnyeong Yun, Binh Hoang, Elias Kallon, Cholho Lee, Chuan-Fu Lin, Gary W. Rubloff, Sang Bok Lee, Alexander C. Kozen
Summary: Li10GeP2S12 (LGPS) is a superionic conductor with high ionic conductivity, making it a promising material for solid-state batteries. However, it reacts chemically and electrochemically with lithium metal, leading to the formation of high impedance interphase layers. Artificial solid electrolyte interphase (ASEI) layers are a potential solution to mitigate this reactivity.
MATERIALS ADVANCES
(2022)
Article
Chemistry, Physical
Victoria C. Ferrari, Nam S. Kim, Sang Bok Lee, Gary W. Rubloff, David M. Stewart
Summary: This study presents a low temperature synthesis method for pre-lithiated cathodes in thin film batteries using a co-sputtering process. The analysis reveals the presence of multiple phases of LixV2O5 in the thin films, which remain unchanged after electrochemical cycling. The co-sputtering process allows for tuning of lithium content and achieves a highly lithiated state. The thin film solid-state battery prototype using the lithiated vanadium oxide as a cathode demonstrates a relatively high coulombic efficiency.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Electrochemistry
Yang Wang, Binh Hoang, John Hoerauf, Cholho Lee, Chuan-Fu Lin, Gary W. Rubloff, Sang Bok Lee, Alexander C. Kozen
Summary: LGPS is a superionic conductor that shows potential for solid-state Li metal batteries, with researchers successfully using hot pressing to fabricate pellets with the highest density and ionic conductance. The XPS analysis indicates no chemical degradation of LGPS powder during the hot pressing process.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
