Article
Electrochemistry
Xi Chen, Laure Monconduit, Vincent Seznec
Summary: Recent studies have shown that 2D materials, such as siloxene and germanane, can exhibit excellent performance as electrodes in alkali metal ion batteries. The improved electrochemical behavior of these materials is likely due to their limited volume change during charge and discharge, which is based on an intercalation mechanism rather than alloying. To combine the cheapness of Si and high electronic conductivity of Ge, we propose a new series of layered materials called siliganes, which are 2D Si-Ge composites. Among them, siligane_Si0.1Ge0.9 demonstrated the best electrochemical performance in Na- and K-ion batteries.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Oleg Yu. Gorobtsov, Hayley Hirsh, Minghao Zhang, Dina Sheyfer, Long Hoang Bao Nguyen, Stephanie D. Matson, Daniel Weinstock, Ryan Bouck, Ziyi Wang, Wonsuk Cha, Jorg Maser, Ross Harder, Ying Shirley Meng, Andrej Singer
Summary: Non-equilibrium defects play a crucial role in determining the macroscopic properties of materials, especially in intercalation hosts in rechargeable batteries. Recent imaging methods have revealed the transient appearance of dislocations during ion diffusion in intercalation hosts. However, there is still limited understanding of the impact, formation, and self-healing mechanisms of transient defects. In this study, the unique metastable domain boundary formation, defect self-healing, and local impact of defects on ionic diffusion in NaxNi1-yMnyO2 intercalation hosts were captured using operando X-ray Bragg Coherent Diffractive Imaging (BCDI) and diffraction peak analysis.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Xi Chen, Laura C. Loaiza, Laure Monconduit, Vincent Seznec
Summary: The 2D Si-Ge alloy materials, known as siliganes, have been developed for use as anodes in Li-ion batteries, offering reasonable cost and promising electrochemical performance. Among them, the siligane_Si0.9Ge0.1 showed the best performance, with a reversible capacity of 1325 mA h g-1, high capacity retention, and coulombic efficiency at a current density of 0.05 A g-1 after 10 cycles.
ACS APPLIED ENERGY MATERIALS
(2021)
Review
Chemistry, Physical
Claude Delmas, Dany Carlier, Marie Guignard
Summary: This paper provides an overview of research on lithium and sodium layered materials as positive electrodes in lithium (sodium)-ion batteries, focusing on the solid-state chemistry's role in discovering new materials and optimizing properties for different applications. Layered structures, especially lithium-based ones, are considered as the best candidates for high energy density batteries for mobile applications. Through high-temperature solid-state chemistry, many substituted phases have been obtained to stabilize the layered structure and increase the specific capacity.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Libing Yao, Peichao Zou, Chunyang Wang, Jiahao Jiang, Lu Ma, Sha Tan, Kevin A. Beyer, Feng Xu, Enyuan Hu, Huolin L. Xin
Summary: An integrated strategy of high-entropy design and superlattice-stabilization is reported to improve the cycle life and rate capability of layered cathodes for sodium-ion batteries.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Junghoon Yang, Jin-Myoung Lim, Mihui Park, Gi-Hyeok Lee, Suwon Lee, Maenghyo Cho, Yong-Mook Kang
Summary: Layer-structured oxide cathodes have various phases depending on Na ion contents, with off-stoichiometry impacting properties like capacity and cyclic stability. Thermal activation process helps maintain stoichiometry, reduce Na ion loss, and improve electrochemical performance of materials.
ADVANCED ENERGY MATERIALS
(2021)
Article
Energy & Fuels
Saban Patat, Ayse Sahin, Yusuf Tas, Ferhat Sanli, Yakup Yilmaz, Tayfur Ozturk
Summary: A novel O3-NaMn0.42Fe0.42Ni0.17O2 cathode material for sodium-ion batteries was successfully synthesized using a co-precipitation method followed by solid-state reaction. The substitution of Ni2+, Cu2+, and Ca2+ for Fe3+ and Mn4+ improved the structural stability and electrochemical performance of the O3-NaMn0.33Fe0.33Ni0.21Cu0.08Ca0.04O2 cathode material. When combined with a hard carbon anode, the full cell exhibited an energy density of 220 Wh kg(-1) and 100% capacity retention after 56 charge/discharge cycles.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Jun Xiao, Hong Gao, Kaikai Tang, Mengqi Long, Jun Chen, Hao Liu, Guoxiu Wang
Summary: This study reports the synthesis of a layered P2-type Mn-based Na0.7Li0.06Zn0.06Ni0.21Mn0.67O2 material by partially substituting Ni with Li and Zn. The resulting material exhibits a stable crystal structure and shows excellent cycle life and electrochemical kinetics during the electrochemical process. It is a promising cathode material for sodium ion batteries.
Article
Engineering, Environmental
Zhaoguo Liu, Shiyong Chu, Jianghua Wu, Chen Cheng, Liang Zhang, Shaohua Guo, Haoshen Zhou
Summary: This study successfully improves the reversible redox performance, structural stability, and sodium ion diffusion capability of cathode materials by introducing Ru substitution, leading to a significant advancement in the electrochemical performance of sodium-ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Biwei Xiao, Fred Omenya, David Reed, Xiaolin Li
Summary: The fast-growing demand for energy storage devices has led to diverse battery techniques. While Li-ion batteries continue to flourish, Na-ion batteries have been identified as a promising alternative, particularly for large-scale grid storage applications. Both techniques are based on similar fundamental mechanisms, but differences in size and Lewis acidity between lithium and sodium ions result in different behaviors when crystallizing or diffusing in layered cathode materials. This review highlights the differences between Li-ion and Na-ion in layered cathode materials and explores potential approaches to leverage their similarities and dissimilarities for future developments of high-performance SIBs.
Article
Chemistry, Physical
Jinsen Jiang, Hung-Chieh He, Chen Cheng, Tianran Yan, Xiao Xia, Manling Ding, Le He, Ting-Shan Chan, Liang Zhang
Summary: Cu-substituted P2-type cathode materials were fabricated and investigated for their improved electrochemical performances. It was found that Cu dopants stabilized the crystal structure, improved cycling stability, and facilitated charge transfer kinetics. Cu substitution also enhanced the moisture stability of the cathode materials. This work provides promising guidance for the design of low-cost, high-performance, and air-stable cathode materials for SIBs.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Hengrui Shi, Jinye Li, Mengjie Liu, Aiping Luo, Lanyan Li, Zhigao Luo, Xianyou Wang
Summary: In this study, NaxMnO2 with Li+ and Cu2+ cosubstitution in the transition metal layer sites was demonstrated as a promising cathode material for high-voltage SIBs. The optimized Na content and cosubstitution of Li and Cu improved the structural stability, electrochemical performance, and cycling performance of the layered transition metal oxide.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Haoji Wang, Xu Gao, Shu Zhang, Yu Mei, Lianshan Ni, Jinqiang Gao, Huanqing Liu, Ningyun Hong, Baichao Zhang, Fangjun Zhu, Wentao Deng, Guoqiang Zou, Hongshuai Hou, Xiao-Yu Cao, Hongyi Chen, Xiaobo Ji
Summary: A configurational entropy tuning protocol is proposed to design Na-deficient, O3-type Na x TmO2 cathodes, which can enhance the kinetics and stability of the electrodes. The entropy effect also contributes to the improved redox reversibility and phase transition behaviors. The prepared entropy-tuned cathode exhibits impressive rate capability, cycling stability, and air stability.
Review
Chemistry, Physical
Feng Tao, Yong Liu, Xinyuan Ren, Aiju Jiang, Huijie Wei, Xiaoliang Zhai, Fei Wang, Heinz-Rolf Stock, Sifan Wen, Fengzhang Ren
Summary: The rapid development of electric vehicles and smart grids has led to increasing demands for lithium ion batteries, but limited lithium resources may hinder their further application. Carbon nanotube-based sodium-ion battery electrode materials are seen as promising alternatives due to their excellent characteristics. This article reviews recent advances in these materials, covering properties, performance enhancement strategies, and future development prospects.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
A. Shahul Hameed, Mirai Ohara, Kei Kubota, Shinichi Komaba
Summary: A phosphite-based layered polyanionic material was explored as a positive electrode for Na-ion batteries with high energy density and long cycle life. The material exhibited high discharge capacity in Na half-cells, and capacity fading was overcome through ball-milling with carbon. The layered material facilitated the migration of large Na+ ions, resulting in superior rate performance and long-term cycling stability.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Electrochemistry
Xingguo Hu, Limin Liu, Xiaoliang Zhou, Xinyuan Qian, Zhou Wang, Feifan He, Yifan Xu, Yang Sheng, Wanxing Zhang, Xueyan Cui, Jing Liu
Summary: The metal-ceramic composite Cu/Ce0.9Mn0.1O2-delta (Cu/CMO) is investigated as a fuel electrode for solid oxide cells (SOCs) and shows excellent anti-carbon and electrocatalytic performance. It exhibits excellent catalytic activity for CO oxidation and electrochemical activity for CO2 reduction, indicating its potential application in solid oxide fuel cells (SOFCs) and solid oxide electrolytic cells (SOECs). The electrode also demonstrates significant stability in both short-term and long-term durability measurement.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2023)
Article
Chemistry, Physical
Shu Wang, Zhican Zhou, Fengyou Yang, Shengyao Chen, Qiaoxuan Zhang, Wenqi Xiong, Yusong Qu, Zhongchang Wang, Cong Wang, Qian Liu
Summary: By studying the band structures and electron transport properties of MoS2 atomristor, researchers have obtained a comprehensive memristive mechanism and successfully realized MoS2 all-atomristor logic gates. This discovery will open up many new opportunities for next-generation logic computing and data processing.
Article
Nuclear Science & Technology
Xiaowen Wang, Cong Shen, Limin Liu, Maolong Liu, Hanyang Gu
Summary: This paper investigates the impact of changes in roughness caused by crud deposits on the convective heat transfer characteristics of nuclear fuel rods and proposes Nusselt number correlations and heat transfer correlations accordingly.
ANNALS OF NUCLEAR ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Wenjie Wang, Rong Sun, Wei Shen, Zhiyan Jia, Francis Leonard Deepak, Yujie Zhang, Zhongchang Wang
Summary: We investigated the air-sensitivity, atomic structure, and magnetic anisotropy of VI3 single crystals. Our results showed that VI3 nanocrystals have a large M-R/M-S ratio of about 0.75 and a uniaxial anisotropic constant of approximately 10(5) erg cc(-1) below the Curie temperature. Moreover, density functional theory calculations demonstrated that both monolayer and bulk VI3 exhibit ferromagnetic insulating properties, with the magnetic moment primarily originating from the d orbital of the V atom. These findings provide a feasible approach for fabricating TEM specimens of air-sensitive layered materials and enhance our understanding of the layered ferromagnetic VI3.
Article
Chemistry, Multidisciplinary
Jiale Zheng, Juncheng Wang, Tianqi Guo, Yao Wang, Jianwei Nai, Jianmin Luo, Huadong Yuan, Zhongchang Wang, Xinyong Tao, Yujing Liu
Summary: Controllable solid electrolyte interphase (SEI) nanostructures with excellent thermal stability are established through (trifluoromethyl)trimethylsilane (TMSCF3)-induced interface engineering. The uniform distributed nanocrystals enhance the thermostability of SEI based on density functional theory simulations. The sub-angstrom visualization of SEI through a transmission electron microscope (TEM) demonstrates its ultrahigh thermostability.
Article
Chemistry, Physical
Tianmeng Zhang, Hao Tan, Yao Du, Haimeng Huang, Mingxia Shen, Xing Liu, Zhongchang Wang, Jianfeng Zhang
Summary: The critical demand for zero wastewater discharge and water purification has emphasized the importance of appropriate membrane material design and applications. The design of porous nanopores in films is a promising solution for improving the film's low flux and poor selectivity. Through the design of a porous crystal skeleton-stimulated hard/soft film, abundant graded nanopores and fluid channels were obtained, greatly enhancing the transportation of water molecules across the film.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Analytical
Xiaosen Cui, Zhaorui Lu, Zhongchang Wang, Wen Zeng, Qu Zhou
Summary: Fiber-like p-CuO/n-ZnO heterojunction gas sensing materials were prepared to detect the decomposition byproducts of SF6: H2S and SO2. The sensors showed excellent performance in detecting H2S and SO2 with higher and faster response-recovery time. The sulfuration-desulfuration reaction between H2S and the sensing materials might contribute to the enhanced sensor performances. Furthermore, the sensors exhibited high response to low exposure of H2S and SO2 gas.
Article
Materials Science, Multidisciplinary
Yong Chen, Hongmei Zhu, Pengbo Zhang, Zhongchang Wang, Meng Wang, Gang Sha, He Lin, Jingyuan Ma, Zhenyuan Zhang, Yong Song, Pengfei Zheng, Lihua Zhou, Sheng Li, Hao Liu, Longzhang Shen, Changjun Qiu
Summary: The effective strategy to enhance impurity tolerance in structural steel is to increase solidification rate. By using laser additive manufacturing, we successfully engineered C, N and O with high contents as interstitial atoms coordinated with Cr in the form of short-range ordered assembly, resulting in the development of an impurity-tolerant supersaturated austenitic stainless steel with high strength, good ductility, enhanced corrosion resistance, and acceptable thermal stability.
Article
Materials Science, Multidisciplinary
Jingpeng Hou, Keliang Qiu, Fengshi Li, Zhenyu Yang, Yonghai Yue, Yongjun Tian, Zhongchang Wang, Lin Guo
Summary: Twin boundary (TB) is a special and fundamental internal interface that alters the mechanical and physical properties of materials. The deformation mechanism of TB and its effect on material strength and plasticity are still under debate. This study discovered that the pseudoelastic strain of a TB can recover with decomposition and escape of pile-up dislocations, which opens up new possibilities for optimizing material properties by manipulating twin boundaries at the nanoscale.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Tianqi Guo, Pengfei Hu, Lidong Li, Zhongchang Wang, Lin Guo
Summary: This article summarizes the important characteristics and applications of amorphous materials in the field of electrochemical energy storage and conversion, with particular emphasis on the significant roles of amorphous nanomaterials in lithium-ion batteries, lithium-metal batteries, and supercapacitors. It also discusses the challenges and future research directions for amorphous materials in various electrochemical techniques.
Article
Chemistry, Multidisciplinary
Tian Zheng, Pengfei Hu, Zhongchang Wang, Tianqi Guo
Summary: A 2D amorphous strategy for sodium ion batteries (SIBs) is proposed using amorphous iron selenide sulfide nanosheets (a-FeSeS NSs) as an anode material, demonstrating remarkable rate capability and long-life cycle performance. This study provides a new approach for structural engineering of other electrode materials.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Binbin Jia, Lidong Li, Chuang Xue, Jianxin Kang, Li-min Liu, Tianqi Guo, Zhongchang Wang, Qizheng Huang, Shaojun Guo
Summary: This study reports a sacrificial protection strategy to stabilize crystalline CuO by embedding active amorphous SnO2, which greatly enhances the electrocatalytic sensitivity, activity, and stability for CO2RR to formate. The hybrid catalyst exhibits superior selectivity and current density, outperforming industrial benchmarks.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Xinzhu Gao, Quan Chen, Qinggang Qin, Liang Li, Meizhuang Liu, Derek Hao, Junjie Li, Jingbo Li, Zhongchang Wang, Zuxin Chen
Summary: By intelligently designing a tri-gate two-dimensional ferroelectric van der Waals heterostructures device using copper indium thiophosphate and few layers tungsten disulfide, the researchers demonstrate its versatile applications in multi-valued data, non-volatile storage, and logic operations. The device can flexibly switch functions at a low supply voltage, offering a high switching ratio and low subthreshold swing.
Article
Chemistry, Physical
Lei Wang, Shu Wang, Xiaofeng Wang, Jianming Zhang, Jianjie Dong, Bin Wei, Haiguang Yang, Zhongchang Wang, Ziyang Zhang, ChuanFei Guo, Qian Liu
Summary: When a laser beam is used to write on a metallic film, it can cause the large grains in the film to melt and break into uniform and ultrafine grains. This method exhibits high control over grain size and uniformity, with a linear relationship between film thickness and grain size. The resulting silver film with ultrafine grains can be used as a surface-enhanced Raman scattering chip with high spatial uniformity and low detection limit.
Article
Chemistry, Inorganic & Nuclear
Lei Wu, Ruixin Zhang, Qun Jing, Hongyu Huang, Xianmeng He, Zhongchang Wang, Zhaohui Chen
Summary: A new UV NLO orthophosphate β-Li2RbBi(PO4)2 with a polar structure and high second harmonic generation response has been successfully synthesized. First-principles calculations reveal that the synergistic effect of P-O and Bi-O groups significantly contributes to the optical properties of this compound.
INORGANIC CHEMISTRY FRONTIERS
(2023)
