Article
Chemistry, Physical
Haiyuan Chen, Tan Zhang, Chuanming Wei, Jianwei Wang, Xiaobin Niu
Summary: The study found that S-functionalized MXenes as anodes for KIBs exhibit metallic properties and structural integrity, with fast charge-discharge rates and high theoretical capacities.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Jiale Qu, Chao Ning, Xiang Feng, Bonan Yao, Bo Liu, Ziheng Lu, Tianshuai Wang, Zhi Wei Seh, Siqi Shi, Qianfan Zhang
Summary: SiO-based materials have potential applications as alloys and conversion-type anode materials for lithium-ion batteries, as well as excellent dendrite-proof layers for lithium-metal batteries. Through first-principle calculations, three new thermodynamically stable phases (Li2SiO5, Li4SiO6, and Li4SiO8) were discovered, and it was found that Li2SiO5 and Li4SiO8 phases possess metallic properties with high electronic conductivity. The mechanical strength of Li-Si-O phases was also found to be higher than lithium metal, and the dominant diffusion mechanism in the Li-Si-O ternary systems is interstitial Li hopping.
ENERGY & ENVIRONMENTAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Deokhyun Hwang, Jong-Wook Ha, Young Soo
Summary: This study demonstrates a simple one-pot process for the preparation of V3.5+ electrolytes from V2O5 using hydrazine monohydrate as a residue-free reducing agent and molybdenum as a homogeneous catalyst. The developed process exhibits scalability and high reproducibility, contributing to the wide application of VRFBs as large-scale and long-term energy storage systems.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Z. El Kacemi, Z. Mansouri, A. Benyoussef, A. El Kenz, M. Balli, O. Mounkachi
Summary: This paper investigates the effects of Mn-doping on the electronic conductivity and voltage of fluorophosphate Na2FePO4F materials. The results show that Mn-doping can significantly decrease the band gap energy and diffusion energies, leading to improved electronic conductivity and sodium-ion transport. These findings highlight the potential of Mn-doped Na2FePO4F as a promising cathode material for sodium-ion batteries.
COMPUTATIONAL MATERIALS SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Jingdong Yang, Jinxing Wang, Xiao Wang, Xiaoyang Dong, Ling Zhu, Wen Zeng, Jingfeng Wang, Fusheng Pan
Summary: Layered MoO2 and MoOSe are promising cathode materials for magnesium ion batteries due to their good conductivity and storage performance, with competitive diffusion barrier and volume expansion properties during the Mg intercalation process.
Article
Chemistry, Physical
Jiangtao Yu, Yan Zhao, Xueqing Niu, Jun Li, Hongtao Gao
Summary: This paper presents first-principle calculations based on density functional theory (DFT) to investigate the performance and mechanism of the hydrogen evolution reaction (HER) on the (001) facet of Ni2B, a novel electrocatalyst. The study reveals that the Volmer-Heyrovsky mechanism is more easily realized on the Ni2B (001) facet, with the Heyrovsky reaction being the rate-determining step. Furthermore, the HER reactivity on the Ni-rich surface can be enhanced by Cr-doping, suggesting the potential of introducing other transition metal atoms to improve the electrocatalytic activity of Ni2B (001) surface. This work paves the way for exploring efficient and durable non-precious metal electrocatalysts for HER in acidic medium.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Multidisciplinary
Gan Qu, Chuntian Qiu, Jun Wang, Jiewen Tan, Shuangfeng Jia, Zhesheng Chen, Jean-Pascal Rueff, Wesley Guangyuan Zheng, Chenliang Su, Bingbing Tian
Summary: This study developed phase-dependent Mo-V oxide cathodes for Zn2+ storage in ZIBs by constructing Mo-V oxides with different phase structures. Through phase engineering, high specific capacity and excellent cyclic stability were achieved with orth-MoVO as the cathode. The proposed phase engineering strategy provides a new approach toward cathode design in ZIBs, offering important insights for the development of ZIB technology.
SCIENCE CHINA-MATERIALS
(2022)
Article
Chemistry, Analytical
William G. Morais, Marina M. Leite, Roberto M. Torresi
Summary: The study improved the performance of sodium vanadium fluorophosphates by doping with Ti4+ and Nb5+, enhancing capacity and stability of the electrodes, as well as increasing diffusion coefficients. This provides new insights and directions for enhancing the electrochemical storage properties of fluorophosphates.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Materials Science, Ceramics
Juanli Zhao, Wai-Yim Ching, Jiancheng Li, Yun Fan, Yiran Li, Wenxian Li, Bin Liu
Summary: The research on nanocrystalline pyrochlores emphasizes the significance of the surface properties such as structure, composition, and point defect segregation in their thermal, electrical, optical, magnetic, and catalytic performances. Through first-principles calculations, the thermodynamic stabilities, configurations, electronic structures, and oxygen vacancies of low-index (100), (110), and (111) surfaces for A(2)Sn(2)O(7) (A = La, Ce, Pr, Nd, Pm, Sm, Eu, or Gd) are investigated to gain insights into surface-related phenomena. The results reveal that (111) surfaces with A(3)SnO(8) and ASn(3)O(6) terminations exhibit lower surface energies, indicating their stability. In addition, (110) surfaces with A(2)Sn(2)O(8) and A(2)Sn(2)O(6) terminations could also form. The structural stability of these surface structures mainly depends on the number of broken bonds, while the local coordination environment has a minor contribution. Moreover, oxygen vacancies are found to segregate on the surface layer due to the lower energy of breaking bonds during oxygen vacancy formation and the larger relaxation space compared to the bulk counterpart. These findings are valuable for optimizing the performance of these compounds through surface engineering.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Engineering, Environmental
Xiao-Dong He, Li-Ming Zhang, Chun-Hai Jiang, Chun-Hua Chen
Summary: A surface modified KVPO4F cathode material was successfully designed and synthesized using a multi-component coating strategy. The optimized KVPO4F-based sample showed improved cycling performance, reversible capacity, and high energy density in potassium-ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Lele Cai, Qiang Han, Zhaofeng Yang, Yanjie Hu, Hao Jiang, Chunzhong Li
Summary: This study demonstrates a modification strategy to enhance the cyclic performance and thermal stability of Ni-rich cathodes in Li-ion batteries by surface engineering with V-doping and ZrV2O7 coating.
Article
Chemistry, Physical
Jiguang Du, Jun Chen, Gang Jiang
Summary: The study reveals that PtTe monolayer shows moderate binding strength with Li polysulfide clusters, making it a promising candidate for anchoring Li-S batteries. Its metallic feature preserves high electrical conductivity, and the diffusion and decomposition barriers on PtTe sheet are comparable to other 2D materials.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Ceramics
Sai Peng, Yijie Chen, Yunping Jia, Shuanglin Hu, Xiaosong Zhou, Canhui Xu
Summary: The adsorption behavior of atomic oxygen and molecular O-2 on the 3C-SiC(1 1 0) surface was investigated using first-principles calculations. The results showed that atomic oxygen prefers to be adsorbed at the C top site with an adsorption energy of -1.95 eV. The most stable configuration for molecular O-2 adsorption is when it is trapped by the second nearest neighboring C and Si atoms, with an adsorption energy of -2.46 eV. All these adsorption configurations exhibit a high tendency to dissociate with dissociation barriers ranging from 0.09 to 0.19 eV.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Review
Chemistry, Multidisciplinary
Xianghua Zhang, Zongbin Zhang, Shitan Xu, Chen Xu, Xianhong Rui
Summary: Sodium-ion batteries (SIBs) have gained attention as a promising research frontier due to their low cost, inherent safety, and environmental friendliness. This review focuses on the latest developments and breakthroughs of vanadium oxides-based electrode materials for advanced-performance SIBs, including their crystal structures, electrochemical performance, structure-property relationships, and sodium storage mechanisms. The review also provides strategies for further improvement, such as lattice engineering, nanostructuring design, surface modification, and 3D porous architecting, and proposes potential directions for resolving emergent challenges and enhancing the commercial application of vanadium oxides-based electrode materials in SIBs.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
X. Zhang, D. Li, Q. Ruan, L. Liu, B. Wang, F. Xiong, C. Huang, P. K. Chu
Summary: This paper provides a comprehensive overview of vanadium-based cathode materials for rechargeable magnesium batteries (RMBs), including vanadium oxides, vanadates, vanadium chalcogenides, and vanadium-based phosphates. The structure, electrochemical properties, optimization strategies, structure-performance relationship, and reaction mechanisms of various vanadium-based cathode materials are described. The challenges, prospective, and future research directions of vanadium-based electrode materials are discussed.
MATERIALS TODAY ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Hongwei Zhang, Junqing Liu, Wenbin Liang, Hongqing Shan, Jie Wang
Summary: This paper proposes a high-temperature thermal-storage combined-cycle power-generation system and conducts technical and economic analyses to determine profitable operating conditions. Sensitivity analysis is carried out to investigate factors affecting the system's net income. The results provide suggestions for the flexibility and transformation of gas-fired steam generators and insights for the development of high-temperature thermal-storage combined-cycle demonstration projects.
Article
Materials Science, Ceramics
Ying Zhou, Changzhong Liao, Ka-Ming Leung, Shengshou Ma, Ting-Shan Chen, Kaimin Shih
Summary: This study evaluated the impact of magnesium incorporation on the structure and solubility of neodymium in zirconolite, and revealed insights for the design and optimization of waste forms for nuclear waste immobilization.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Yanmei Nie, Jiexi Wang, Jing Zhong, Guangchao Li, Zhixing Wang, Wenjie Peng, Xinhai Li, Renheng Wang, Guochun Yan, Huajun Guo
Summary: In this study, the deposition pathways of lithium ions in metal batteries were fundamentally revealed using in-situ Raman spectroscopy. A new strategy of attraction-repulsion synergy was proposed for the preparation of dendrites-free and volume expansion restrained lithium metal anodes.
APPLIED SURFACE SCIENCE
(2023)
Article
Environmental Sciences
Shijie Zhang, Weihua Gu, Zhixin Geng, Jianfeng Bai, Bin Dong, Jing Zhao, Xuning Zhuang, Kaimin Shih
Summary: Sludge pyrolysis is an important method for recycling sludge, and stabilizing heavy metals in sludge is crucial for effective sludge recycling. This study investigated the impact and mechanism of co-pyrolysis of sludge and CaSiO3, and successfully demonstrated the concept of treating waste with waste. The addition of CaSiO3 in the co-pyrolysis process significantly stabilized heavy metals and promoted the formation of stable compounds.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Materials Science, Multidisciplinary
Xinxin Tan, Wenjie Peng, Meng Wang, Gui Luo, Zhixing Wang, Guochun Yan, Huajun Guo, Qihou Li, Jiexi Wang
Summary: In this study, aluminum and zirconium dual-doped Co-free Ni-rich LiNi0.96Mn0.04O2 cathode material (NMAZ) with improved structural stability and electrochemical performance for lithium-ion batteries is prepared. The NMAZ shows low cation disordering degree and improved lithium-ion diffusion kinetics, leading to enhanced capacity retention and rate performance.
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
(2023)
Article
Nanoscience & Nanotechnology
Bianzheng You, Jiping Sun, Yu Jing, Guochun Yan, Huajun Guo, Zhixing Wang, Ding Wang, Wenjie Peng, Qihou Li, Jiexi Wang
Summary: A new one-step spray pyrolysis method is proposed to prepare high-performance NCM811 cathode materials by synthesizing lithium-contained precursors in which all elements are well distributed at a molecular level. Precursors with folded morphology and exceptional uniformity are obtained at a low pyrolysis temperature of 300 degrees C. The final products exhibit excellent cyclic retentions of 94.6% and 88.8% after 100 and 200 cycles at 1 C.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Jiping Sun, Guangchao Li, Zhanyou Xu, Yi Xie, Jiexi Wang, Ying Wang
Summary: The electrochemical CO2 reduction reaction (CO2RR) is a promising method for converting CO2 into methane (CH4) and other high-value-added chemicals to lower carbon emissions and mitigate the greenhouse effect. However, the selectivity of CO2RR for methane production remains low at current densities required for commercialization. In this study, monodisperse copper-based catalysts were synthesized in a simple one-step method for efficient electromethanation of CO2. By regulating the active sites, the selectivity for methane production reached as high as 57.02% under a current density of 300 mA cm(-2), which was achieved by suppressing C-C coupling for improved *CO hydrogenation. This work provides an effective strategy to regulate Cu-based catalysts for managing *CO hydrogenation in CO2RR towards CH4 formation.
Article
Engineering, Environmental
Zexiao Zheng, Jiacheng Min, Xiaoying Wang, Cheuk Wai Lung, Kaimin Shih, Irene M. C. Lo
Summary: In this study, an S-scheme magnetic ZnFe2O4/ammoniatedMoS(2) (ZnFe2O4/A-MoS2) heterojunction was developed as a visible-light-driven PMS activator for PPCP degradation, achieving enhanced photocatalytic activity.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Shuliang Luo, Huajun Guo, Hai Lu, Zhixing Wang, Xinhai Li, Wenjie Peng, Guochun Yan, Jiexi Wang
Summary: This study investigated the anodic process of electrowinning of metal manganese from three aspects. The results showed that self-oxidation of the lead anode formed an oxide film, while the hydrolysis of trivalent manganese ions produced manganese dioxide. As the electrolysis progressed, the oxygen evolution activity of the electrode increased, but the anode film tended to fall off, resulting in the formation of anode slime.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Zhihao Guo, Qihou Li, Xinhai Li, Zhixing Wang, Huajun Guo, Wenjie Peng, Guangchao Li, Guochun Yan, Jiexi Wang
Summary: A rational powder-covering sintering strategy is proposed to prepare highly uniformly dense garnet type solid-state electrolyte, and the microstructural and macrostructural characteristics of the sintering process are studied. The as-prepared electrolyte exhibits good ionic conductivity and cycling stability.
Article
Engineering, Environmental
Zhe Xu, Guangfu Luo, Yi'ang Fan, Yunxue Xia, Jiangpeng Li, Jianshuai Zhang, Kaimin Shih, Yuanyuan Tang
Summary: Cu(FexAl2-x)O4-embedded sediment ceramic membranes (CuFeAl@SCMs) were fabricated and utilized for continuous bisphe-nol A (BPA) degradation with peroxymonosulfate (PMS) activation. The CuFeAl@SCM-42 membrane exhibited the highest BPA degradation efficiency (98.3%). SO4 and ·OH were identified as the main ROS involved in the degradation process. DFT calculations confirmed that Al doping enhanced the adsorption energy and electron transfer rate, promoting PMS activation for BPA degradation. The prepared CuFeAl@SCM-42 membrane showed outstanding performance in various water environments, demonstrating its excellent practicability, stability, and recyclability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Qi Zhao, Shengshou Ma, Wanghoe Ho, Yixuan Wang, Jaden Yuen Tao Ho, Kaimin Shih
Summary: This study developed a simple and environmentally friendly method for metal recovery from waste printed circuit boards (WPCBs) using deep eutectic solvents (DESs). The results showed that the DESs can efficiently leach and recover metals such as zinc, lead, copper, and tin.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Chemical
Jingdong Yang, Yu Li, Zequn Yang, Guang-Guo Ying, Kaimin Shih, Yong Feng
Summary: The catalytic ozonation of porous carbonaceous materials holds great potential for the treatment of refractory organic contaminants. However, the formation mechanism of hydroxyl radicals and the contribution of reactive oxygen species (ROS) remains contentious. This study used highly porous biochar (HPB700) as a model material and investigated the formation, evolution, and contribution of ROS during catalytic ozonation. The results showed that free hydroxyl radicals were generated during the process, and hydrogen peroxide played a key role in their formation. The findings enhance our understanding of hydroxyl radical formation and the role of different ROS in pollutant degradation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Chao Yang, Lin Lin, Shanshan Shang, Shengshou Ma, Feiyun Sun, Kaimin Shih, Xiao-yan Li
Summary: This study introduces an innovative electrochemical wastewater treatment technology using packed bead-electrodes as a dynamic electrocatalytic filter, which expands the electroactive volume and greatly enhances the efficiency of electrochemical degradation of micropollutants. This technology has the potential to revolutionize electrochemical wastewater treatment and effectively control emerging pollutants in the water environment.
Article
Multidisciplinary Sciences
Bianzheng You, Zhixing Wang, Yijiao Chang, Wei Yin, Zhengwei Xu, Yuexi Zeng, Guochun Yan, Jiexi Wang
Summary: A multi-scale boron penetration strategy is designed to address the poor cycling stability and rate capability of nickel-rich layered oxides LiNixCoyMn1-x-yO2 in lithium-ion batteries. The strategy improves lithium-ion diffusion kinetics, suppresses parasitic reactions and gas evolution, and enhances the overall electrochemical performance.
FUNDAMENTAL RESEARCH
(2023)
