Article
Chemistry, Multidisciplinary
Shuo Wang, Fei Chen, Li-ming Zhang, Yi-xuan Li, Nai-qing Ren, Kuo Cao, Jing-chao Xiao, Chun-hua Chen
Summary: Potassium-ion batteries (PIBs) are considered a promising solution for large-scale energy storage due to abundant potassium reserves. This study successfully synthesized cubic KFeF3/rGO-PVA-500 sample with excellent electronic conductivity. The sample demonstrated outstanding rate performance and cycling stability, with a high capacity retention of 94% after 1000 cycles at 200 mA g(-1). In situ and ex situ characterization revealed a hybrid reaction mechanism comprising mainly solid solution and partly conversion processes.
Article
Engineering, Chemical
Widya Sinta Mustika, Dian Ahmad Hapidin, Casmika Saputra, Muhammad Miftahul Munir
Summary: The study utilized dual needle corona discharge (NCD) as a bipolar ion source to neutralize electrospray particles, achieving stable concentration and consistent size distribution. The bipolar ions generated by the dual NCD effectively neutralized and reduced the charge state of larger ES-PSL particles.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yue Zhang, Hang Wang, Yakun Tang, Yudai Huang, Dianzeng Jia
Summary: A P2-Na0.7MnO2.05 cathode material with hierarchical book-like morphology combining exposed (100) active crystal facets was synthesized by hydrothermal method. The unique hierarchical structure contributes to high electrochemical performance, including high reversible capacity and remarkable high-rate cyclability, by shortening the diffusion distances of Na+ and electrons and relieving the stress and strain generated during the cycle.
Article
Chemistry, Physical
Saul Perez Beltran, Perla B. Balbuena
Summary: This study investigated the effects of electrochemical lithiation on the mechanical integrity of sulfurized polyacrylonitrile (SPAN) through uniaxial tensile loading tests. It was found that the degree of graphitization of the carbonized skeleton affects SPAN's ability to withstand volume expansion-induced structural stresses upon lithiation, resulting in a decrease in ductility with increasing lithium contents.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Zaiwang Zhao, Xiao Wang, Xinxin Jing, Yujuan Zhao, Kun Lan, Wei Zhang, Linlin Duan, Dingyi Guo, Changyao Wang, Liang Peng, Xingmiao Zhang, Zesheng An, Wei Li, Zhihong Nie, Chunhai Fan, Dongyuan Zhao
Summary: Ultrafine organic-inorganic hybrid nanoparticles were successfully synthesized using a thermo-kinetics-mediated copolymer monomicelle approach, leading to nanoparticles with monodisperse, uniform size and high thermodynamic stability. These nanoparticles demonstrated excellent uniformity and toughness, showing promise for a wide range of potential applications.
ADVANCED MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Sylwia Fiejdasz, Adriana Gilarska, Wojciech Horak, Agnieszka Radziszewska, Tomasz Straczek, Michal Szuwarzynski, Maria Nowakowska, Czeslaw Kapusta
Summary: Novel hybrid magnetic materials based on natural polymer matrices containing superparamagnetic iron oxide nanoparticles were successfully prepared by coating SPIONs with a chitosan derivative and linking them with a chitosan-collagen hydrogel matrix through covalent bonds. The microstructure and magnetic properties of the materials were determined by electron microscopy, scanning transmission electron microscopy, and magnetic force microscopy. Rheological studies revealed the effect of material composition on mechanical properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Electrochemistry
Lina Chen, Yamin Zhang, Chongyang Hao, Xiaowen Zheng, Qidi Sun, Youri Wei, Bohao Li, Lijie Ci, Jun Wei
Summary: In this study, potassium-ion pre-intercalated KxMnO2 nanowires with enlarged interplanar spacing and optimized ion diffusion channels were successfully synthesized using a hydrothermal process. These nanowires exhibited superior electrochemical properties in hybrid supercapacitors and provided a strategy for designing high-performance cathodes.
Article
Chemistry, Multidisciplinary
Yuyu Dai, Yue Gao, Haoran Xu, Xiaoqing Li, Xiangsheng Xu, Zhenming Li
Summary: In this study, a novel quinone-based imide conjugated microporous polymer-reductive graphene oxide (PIBQ-1%rGO) composite was successfully designed and prepared. The composite exhibited a unique sandwich structure and showed a high specific capacity in a sulfuric acid electrolyte. Additionally, a symmetric device constructed with PIBQ-1%rGO composites yielded a high energy density and power density.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Energy & Fuels
Xuan Wang, Shao-hua Luo, Peng-wei Li, Yang Zhan, Sheng-xue Yan
Summary: In this study, Li2Mn1-xCrxSiO4 cathode material was synthesized by solid-phase doping method, and its structure and performance were analyzed through XRD, SEM, and TEM tests. The results show that Cr doping can improve the structural stability and electrochemical activity of the material.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Eswaravara Prasadarao Komarala, Clament Sagaya Selvam Neethinathan, Samanth Kokkiligadda, Karthikeyan Mariyappan, Seong Soo Yoo, Pil Jin Yoo, Sung Ha Park
Summary: The utilization of manganese oxides/oxyhydroxides as efficient supercapacitor electrode materials is limited by their cyclic stability. However, the fabrication of manganese oxide/oxyhydroxide nanoparticles embedded in DNA scaffolds has been found to significantly improve their stable electrochemical performance. DNA acts as a strong support material, enhancing the cyclic stability of the electrode materials. This unique approach of utilizing DNA as a stable support material can be used for a wide range of electrochemical applications.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Xu Ding, Shuang Zhu, Xia-Yu Tao, Wangsheng Chu, Zhao Wu, Gang Liu, Yong Guan, Yangchao Tian
Summary: Mechanical properties are crucial in battery performance degradation, and understanding particle crack formation is important for optimizing battery materials. In this study, we used soft X-ray tomography to observe the internal structure of Mo2C particles and quantified the growth and evolution of cracking. We also investigated the impact of defects on crack propagation during particle preparation.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Biochemistry & Molecular Biology
Yuan Chen, Yufei Zhao, Feihong Liu, Mengdie Ding, Juan Wang, Jiuxin Jiang, Pascal Boulet, Marie-Christine Record
Summary: In this study, glass materials with different compositions were prepared and characterized. It was found that increasing the content of Bi2O3 led to improved stability of the glass network. Heat treatment of the glass materials resulted in enhanced electrochemical properties. This study provides an approach for the development of new glass cathode materials for lithium-ion batteries.
Article
Electrochemistry
Cheng-Je Shie, Yung-Hsiang Yen, Jenn-Shing Chen
Summary: The behavior of dissolution and migration of long-chain lithium polysulfide (LiPS) intermediates in the sulfur cathode was investigated, and the performance of Li-S batteries was improved by preparing carbon nanofibers polyethylenimine/sulfur (CNFs-PEI/S) composites. The enhanced rate capability and cycling stability of CNFs-PEI/S were primarily attributed to the formation of electrostatic interaction between amino groups in the PEI chains and LiPS intermediates, which suppressed LiPS dissolution and restrained the shuttle effect. An in situ rotating ring-disk electrode (RRDE) experiment was used to evaluate the dissolution properties of LiPS intermediates from various sulfur electrode materials, showing the feasibility of the proposed method.
ELECTROCHIMICA ACTA
(2022)
Article
Energy & Fuels
Mohammad Mahdi Kalantarian, Hatef Yousefi-Mashhour, Maryam Tahertalari, Piercarlo Mustarelli
Summary: This study proposes a method for standardization and normalization parameters and procedures for evaluating the performance of intercalation cathode materials, as well as simple criteria for assessing cell performance. Despite the complex chemistry involved in Li/Na-ion cell operation, the applicability of this simple approach is supported by diffusion theory and experimental assumptions.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Multidisciplinary Sciences
Rhys E. A. Goodall, Abhijith S. Parackal, Felix A. Faber, Rickard Armiento, Alpha A. Lee
Summary: A fundamental challenge in materials science is to understand the relationship between stoichiometry, stability, structure, and property. Recent advances in machine learning have shown that it can be used to accurately predict the stability and functional properties of materials. This study solves the bottleneck of crystal structure identification for previously unidentified materials by coarse-graining the search space of atomic coordinates. The use of Wyckoff representations as inputs to a machine learning model achieves high precision in finding unknown theoretically stable materials.
