Article
Chemistry, Multidisciplinary
Hyunwoo Kim, Woosung Choi, Jaesang Yoon, Eunkang Lee, Won-Sub Yoon
Summary: The study synthesized four different MnO2 polymorphs with controlled morphology to investigate their influences in conversion-based materials. Experimental results showed that spinel-phased MnO2 was formed during charge storage reactions for all samples, but the electrochemical performance varied based on the initial crystal structure. Among the polymorphs, lambda-MnO2 exhibited the highest reversible capacity of around 1270 mAh g(-1) due to its faster kinetics and structural similarity between cycled and pristine states. These findings suggest that polymorphs are an important factor in designing high-performance materials for next-generation rechargeable batteries.
Article
Chemistry, Physical
Wenqin Ling, Zhengguang Zou, Shuchao Zhang, Xiaoxiao Peng, Shiying Luo, Xin Tang, Jing Geng
Summary: Heteroatom doping is a common modification method for lithium-ion battery electrodes, and it can improve the electrochemical performance of materials. In this study, CO2-modified VO2(B) nanorods were synthesized, resulting in a CO2-VO2 electrode with high rate capacity and capacity retention. The role of CO2 small molecules as a pillar in the interlayer of VO2(B) and the weak electrostatic attraction between OCO2 and Li+ contribute to the stability and diffusion of lithium ions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Zhen Zhang, Wen-Long Bai, Zhi-Peng Cai, Jin-Huan Cheng, Hua-Yi Kuang, Bo-Xu Dong, Yu-Bo Wang, Kai-Xue Wang, Jie-Sheng Chen
Summary: In this study, Ru(bpy)(3)Cl-2 was employed as a solution-phase catalyst for Li-CO2 batteries, demonstrating improved performance by promoting electroreduction process and delaying carbonate transformation. This work provides a new avenue to enhance the electrochemical performance of Li-CO2 batteries using efficient mobile catalysts.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Nanoscience & Nanotechnology
Xiaoyang Chen, Jian Chen, Yijie Liu, Yang Liu, Yun Gao, Siwei Fan, Xiangxi He, Xiaohao Liu, Chao Shen, Yong Jiang, Li Li, Yun Qiao, Shulei Chou
Summary: Metal-CO2 batteries, especially Li-CO2 and Na-CO2 batteries, have high energy density and CO2 capture capability, but the accumulation of carbonates during charge-discharge cycles restricts their practical application. Efficient catalysts, such as sea urchin-like ?-MnO2, can improve the electrochemical performance of metal-CO2 batteries by promoting carbonate decomposition.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Ling Zhang, Qi Liu, Yuxin Wang, Chunling Xu, Jiaying Bi, Daobin Mu, Borong Wu, Feng Wu
Summary: By utilizing modified gamma-MnO2 as the sulfur host and incorporating pre-lithiation and molybdenum doping, the study successfully addresses the capacity decline issue in lithium-sulfur batteries during cycling, demonstrating enhanced performance and potential as a high-performance alternative.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Mingming Han, Jingjing Yao, Jiwu Huang, Yan Tang, Xianwen Wu, Bingan Lu, Jiang Zhou
Summary: Aqueous rechargeable Zn//MnO2 batteries are a promising candidate for future energy storage systems due to their economic and environmental advantages. However, poor reaction kinetics and capacity degradation hinder the performance of Zn//MnO2 batteries. This study demonstrates that defects engineering and phase transformation can enhance ion/charge transfer kinetics and structural stability, leading to a high discharge capacity of 285 mAh/g and capacity retention of 81% after 500 cycles in the aqueous Zn//A-MnO2 system.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Zhiguang Cao, Yuebei Yang, Junling Qin, Jieying He, Zixue Su
Summary: A novel lollipop nanostructure of Co3O4@MnO2 composite was prepared as anode material for lithium-ion batteries in this study, showing excellent electrochemical performances with high capacity and cyclic stability. The unique configuration of porous Co3O4 polyhedron and MnO2 nanotube contributed to the structural stability and facilitated lithium insertion/extraction, leading to superior rate capacity and cyclic stability in Co3O4@MnO2-based LIBs.
Article
Chemistry, Multidisciplinary
Luyu Li, Ruizhe Wu, Hancheng Ma, Bingbing Cheng, Shaoqing Rao, Sheng Lin, Chunbo Xu, Lei Li, Yao Ding, Liqiang Mai
Summary: This study presents a facile chemical modification method of CFx with d-MnO2, which greatly enhances the electrochemical performance of Li/CFx batteries at high-rate discharge without compromising the specific capacity. The modified batteries exhibit energy densities approaching the theoretical values of commercial fluorinated graphite and achieve high power densities, making them among the best performers in the Li/CFx battery field. The underlying reasons for the outstanding electrochemical performance, including fast Li+ diffusion kinetics and low formation energy barrier, are explored through experimental and theoretical approaches.
Article
Engineering, Environmental
Junghwan Kim, Seongdeock Jeong, Mincheol Beak, Jangho Park, Kyungjung Kwon
Summary: PV-EC systems, utilizing CO2 reduction reaction (CO2RR) catalysts and solar cells, have gained attention as a method of artificial photosynthesis to obtain energy fuels and address environmental concerns. CO is the most popular CO2RR product, with solar-to-CO efficiency increasing from -6% to -19% in recent years.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Bo Wang, Sunrui Luan, Yi Peng, Junshuang Zhou, Li Hou, Faming Gao
Summary: Fe2O3@OMC, synthesized using Fe-MOFs, demonstrates higher capacity and longer cycle life compared to traditional OMC or carbonized Fe-MOFs. The material maintains good performance under various current densities, showing promising rate performance. Combining iron oxide and MOFs is beneficial for improving the capacity performance.
Article
Materials Science, Multidisciplinary
Dandan Ma, Xin Mu, Guiqing Zhao, Xiangge Qin, Meili Qi
Summary: MnO2/CNFs were obtained by electrospinning technology to improve the conductivity and cycling performance of MnO2. The MnO2/CNFs exhibited superior electrochemical performance and could be used as a flexible electrode material.
Article
Chemistry, Physical
Quang Nhat Tran, Thuan Ngoc Vo, Il Tae Kim, Ji Hyeon Kim, Dal Ho Lee, Sang Joon Park
Summary: The study improved the electrochemical performance of LIBs by preparing a nanocomposite of MnO2 and CNC, overcoming the issues of volume change and electrical conductivity during cycling, showing good rate capability and cycling stability.
Article
Chemistry, Multidisciplinary
Xue Teng, Yanli Niu, Shuaiqi Gong, Mingze Xu, Xuan Liu, Lvlv Ji, Zuofeng Chen
Summary: In/ZnO@C hollow nanocubes exhibit excellent catalytic activity for CO2 reduction, achieving high current density and selectivity for formic acid production. Coupling the cathode with a RuO2 anode enables solar-driven electrochemical CO2/H2O splitting. Furthermore, constructing an aqueous rechargeable Zn-CO2 battery with In/ZnO@C as the cathode holds promise for green energy conversion and storage.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Energy & Fuels
Yujie Wang, Mingyu Zhang, Yuxuan Zhang, Yafeng Wang, Wenxin Liu, Chujie Yang, Veniamin Kondratiev, Feixiang Wu
Summary: In this study, a honeycombed CoF2@C nanocomposite was prepared to achieve excellent electrochemical performance for metal fluoride-lithium batteries. The honeycombed structure provided uniformly isolated nanospace to inhibit volume expansion and product agglomeration during the reaction, while the three-dimensional electron and ion conduction pathway facilitated high-capacity utilization.
Article
Chemistry, Physical
Mengyuan Song, Changhao Tian, Chunguang Chen, Tao Huang, Aishui Yu
Summary: Lithium-oxygen batteries have high energy density, but conventional liquid electrolytes struggle to form a stable solid electrolyte interface (SEI) on the cathode surface for long-term stable cycling. LiBOB is added to the LiTFSI-based electrolyte to solve this issue. The introduction of LiBOB induces the dissociation equilibrium of the lithium salt positively, resulting in an electrolyte with good ionic conductivity. Different amounts of LiBOB exhibit different characteristics in electrochemical performance, with trace amounts improving discharge capacity. The synergistic effect of the LiTFSI-LiBOB dual-salt electrolyte forms a protective SEI, leading to comparable cycling performance.
JOURNAL OF POWER SOURCES
(2023)
Article
Architecture
Chun Qing, Jin Hui, Wu Yuande, Han Yidan, Mi Zhendong, Chen Qi, Ma Shiyu
Summary: This study presents a quantitative evaluation method for the structural safety of existing three-hole stone arch bridges. By analyzing a typical three-hole stone arch bridge, the method uses finite element software and an improved analytic hierarchy process to assess the structural safety. The results verify the accuracy and efficiency of this method.
JOURNAL OF ASIAN ARCHITECTURE AND BUILDING ENGINEERING
(2023)
Article
Chemistry, Physical
Huixin Jin, Jianxin Zhang, Wenyang Zhang, Youjian Zhang, Shengcheng Mao, Yiqun Du, Shiyu Ma, Jingyu Qin, Qi Wang
Summary: Ru has different effects on the precipitation of different types of TCP phases in nickel-based single crystal superalloys. Solutes like Ru, Re, W, Cr, and Ta can enhance the interface stability and promote the nucleation of sigma phase, while Co has the opposite effect. Solutes like Cr and Ru have more stable energy distribution in sigma phase compared to gamma phase and tend to diffuse from gamma to sigma.
Article
Engineering, Biomedical
Weiqiang Xu, Yang Zheng, Yuxuan Jiang, Zhaoyi Zhang, Shiyu Ma, Yanping Cao
Summary: Shear wave elastography (SWE) is used to measure muscle elastic properties in vivo and has important applications in sports medicine and muscle-related diseases. This study proposes a SWE method to estimate active constitutive parameters of skeletal muscles. An analytical solution is derived to relate shear wave velocities to both passive and active material parameters, and an inverse approach is used to evaluate these parameters. In vivo experiments demonstrate the usefulness of the method and reveal quantitative variations of the active parameter with muscle states.
ACTA BIOMATERIALIA
(2023)
Article
Electrochemistry
Hangming Xie, Shiyu Ma, Zhiwei He
Summary: PANI/MoOx nanowires decorated MXene (PMM) film electrodes were rationally designed and prepared via a vacuum-assisted filtration method. The PMM composite film with 20 wt.% PANI/MoOx nanowires exhibited a high specific capacitance of 450 F/g at 5 mV/s and a capacitance retention of about 91.5% after 10,000 cycles at 20 A/g. The symmetric supercapacitors based on the PMM-20 composite film electrodes showed an energy density of 19.53 Wh/kg at a power density of 1610.11 W/kg. The PMM film electrodes with excellent electrochemical properties provide new insights into the rational design of supercapacitor electrodes, showing great potential in the application of energy storage devices.
ELECTROCHIMICA ACTA
(2023)
Article
Architecture
Shiyu Ma, Qing Chun, Chengwen Zhang, Ling Yang, Yuchong Qian, Guang Cao, Qingchong Dong
Summary: This paper proposes a scientific and effective assessment method for the structural safety status of traditional courtyard-style timber buildings. By introducing the Improved Analytic Hierarchy Process, the quantitative weights of components in traditional courtyard-style timber buildings are obtained. A structural safety status evaluation system, evaluation indexes, and weights are established based on the structural characteristics of courtyard-style timber buildings. In addition, a quantitative automated security assessment software for courtyard-style timber buildings is developed to provide a reference for their safety assessment and preventive conservation.
INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE
(2023)
Article
Materials Science, Multidisciplinary
Lingli Zhan, Shiyu Ma, Hao Tan, Tiesong Lin, Lixiong Han, Hong Li, Dehua Xiong
Summary: MAS glass-ceramics were prepared using melt and sintering method with two nucleating agents, CaF2 and Na2SiF6. The effects of nucleating agents on the crystallization kinetics, behavior, and properties of MAS glass-ceramics were investigated. The nucleating agents had a significant influence on the characteristic temperatures of the parent glass, but had negligible effects on the crystallization behavior and properties of the glass-ceramics. MAS glass-ceramics showed low dielectric constant and loss, making them potential candidates for electronic devices.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Soil Science
Shiyu Ma, Guilong Li, Pengfa Li, Jia Liu, Shuxia Xu, Shimin Zhang, Meng Wu
Summary: Microbes play a crucial role in the global carbon cycle and influence terrestrial biogeochemistry. However, we have limited understanding of how the community assembly processes of abundant and rare bacterial subcommunities are linked to soil carbon dynamics. To address this gap, we conducted a study on soil profiles in a paddy ecosystem. The results showed that both abundant and rare bacterial subcommunities were influenced by random processes, but deterministic processes had a greater impact on the assembly of rare bacteria. The assembly processes were closely correlated with soil organic carbon content, and the response to variations in carbon content differed between abundant and rare taxa. The assembly processes of rare bacteria significantly contributed to soil carbon metabolism, highlighting the importance of further investigation in connecting community assembly with ecosystem functions.
APPLIED SOIL ECOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Lihui Feng, Xiaofei Zhang, Zhekuang Jin, Jiashang Chen, Xing Duan, Shiyu Ma, Tifeng Xia
Summary: Metal-organic frameworks (MOFs) with porosity and functional adjustability have great potential for the removal of organic dyes in wastewater. A new anionic porous MOF (HDU-1) was synthesized using a [In(OOC)(4)](-) cluster and a nitrogen-rich linker H(3)TATAB. The high electronegativity, water stability, and porosity of HDU-1 facilitate ion-exchange and Coulombic interactions, resulting in high selectivity and removal rates for trace cationic dyes.
Article
Materials Science, Multidisciplinary
Shi-Yu Ma, Jin-Kai Li, Zong-Ming Liu
Summary: Inorganic halide perovskite quantum dots show excellent optical and photoelectric properties, but their commercial application is hindered by instability. This study introduces a PbX (OH) (X = Cl,Br) encapsulation layer to improve the stability of CsPbX3 (X = Cl,Br) perovskite quantum dots in polar solvents. The encapsulation layer acts as a water-blocking and protective layer, reducing surface passivation and trap density, and greatly enhancing the photoluminescence quantum yield and stability of the perovskite structure.
Article
Environmental Sciences
Wenyu Shu, Jingjing Ma, Ningning Geng, Yang Xiang, Shiyu Ma, Xian Li, Fang Tong, Shisheng Fang
Summary: Underwater shield tunneling can cause disturbance to the soil near the river, potentially leading to calamities such as flooding or erosion. It is crucial to assess the safety of the tunnel cover thickness in order to ensure construction security and embankment stability.
Article
Chemistry, Multidisciplinary
Miao Yang, Hao Tan, Shiyu Ma, Yue Mi, Lifeng Liu, Zongyan Zhao, Hong Li, Dehua Xiong
Summary: Cu-BTC-IPA and Co(NO3)(2)& BULL;6H(2)O precursors were used to synthesize CuCoO2 (CCO) nanocrystals with desired crystal phase and morphology. The effects of Fe doping on the crystal structure and oxygen evolution reaction (OER) performance of CCO were investigated. The results showed that Fe doping improved the OER catalytic performance of CCO by reducing the Gibbs free energy and promoting the formation of intermediates.
Article
Chemistry, Inorganic & Nuclear
Zhi Yang, Hao Tan, Yu Qi, Shiyu Ma, Jilin Bai, Lifeng Liu, Dehua Xiong
Summary: This work successfully synthesized a nanostructured Fe-doped cobalt-based telluride catalyst with excellent oxygen evolution reaction (OER) performance. Fe doping was found to improve OER activity and long-term catalytic stability. This study provides a new approach for the preparation of bimetallic telluride catalysts with enhanced OER performance.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Hangming Xie, Zhibiao Guo, Mingkun Wang, Shiyu Ma, Zhe Kong, Zhiwei He
Summary: A ternary PCM (PANI/graphitic carbon nitride/MXene) composite has been prepared by introducing graphitic carbon nitride via in situ chemical polymerization and vacuum-assisted filtration. The PCM composite exhibits excellent physicochemical properties and morphologies, leading to enhanced electrochemical performance compared to individual components. The PCM composite shows a high specific capacitance of 570 F g(-1) at a scan rate of 5 mV s(-1). When assembled into a symmetric supercapacitor, the PCM electrode displays an energy density of 18.8 W h kg(-1) at a power density of 1563 W kg(-1).
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Shiyu Ma, Miao Yang, Na Han, Lifen Shi, Liang Wang, Jilin Bai, Dehua Xiong
Summary: CuCoO2 (CCO) nanocrystals were derived from Cu-BTC/Cu-BTC-IPA precursors using the solvothermal method, and their application in electrocatalytic oxygen evolution reaction (OER) was investigated. The study provides a new approach for the preparation of delafossite oxide CCO and the enhancement of their OER performances by tailoring the organic ligands of MOF precursors.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Forestry
Haoyu Wang, Qing Chun, Chengwen Zhang, Shiyu Ma, Guang Cao, Qingchong Dong
Summary: This study aims to develop novel Hybrid fiber reinforced polymers (HFRP) sheets suitable for long timber columns. The evaluation of six HFRP sheets was carried out through tensile tests and Scanning electron microscopy (SEM) tests. Two sets of 36 timber columns were designed for compression tests, and the effects of different sheet types and strengthening methods on the compressive performance of timber columns were investigated. The findings show that bidirectional HFRP sheets have excellent compressive performance for timber columns and can increase the bearing capacity by 22.27%. This research provides an important scientific foundation for the advancement of fiber-reinforced timber column technology and the preservation of timber structures heritage.
JOURNAL OF WOOD SCIENCE
(2023)
