Article
Chemistry, Physical
Meijie Zhu, Jiangang Li, Zhibei Liu, Li Wang, Yuqiong Kang, Zhaohan Dang, Jiasen Yan, Xiangming He
Summary: The cathode material LiNi2/3Co1/6Mn1/6O2 with excellent electrochemical performance was successfully prepared using a rheological phase method. Characterization results showed that calcination temperature and atmosphere significantly influenced the structure and performance of the material, with the sample calcinated at 800 degrees C under O-2 atmosphere demonstrating well-crystallized particle morphology and excellent electrochemical performance. This suggests that LiNi2/3Co1/6Mn1/6O2 is a promising cathode material for lithium-ion batteries.
Article
Chemistry, Physical
Yunyun Zhang, Jian Li, Weiguo Huang, Zhexi Chi, Jinyu Bo, Lihua Wang, Zhiyong Wang
Summary: In the recycling process of spent lithium-ion batteries, the presence of Al impurities affects the physical and electrochemical properties of the recovered cathode active materials. This study investigates the effects of different forms (Al and Al3 +) and concentrations of Al impurities on the recovery of LiNi1/3Co1/3Mn1/3O2 cathode material. The results show that Al3 + impurities promote particle nucleation and growth, improving electrochemical performance, while existing Al impurities lead to additional side reactions and negatively impact electrochemical performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Roman R. Kapaev, Alexander F. Shestakov, Sergey G. Vasil'ev, Keith J. Stevenson
Summary: The ladder-type conjugated polymer with hexaazatriphenylene moieties serves as a promising cathode material for Li-, Na-, and K-based batteries, exhibiting high specific capacities and excellent cycling stability. The material also shows remarkable capacity retention even at high discharge rates.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Engineering, Chemical
Nan Jiang, Long Chen, Yitao Wang, Hao Jiang, Yanjie Hu, Chunzhong Li
Summary: Sodium-ion batteries, known for their high safety and abundance, have gained significant attention. Among various cathode materials, Na3V2(PO4)(3) (NVP) shows exceptional rate performance and cycle stability, making it a promising candidate for commercialization. However, the low conductivity of NVP remains a major challenge. This study proposes a confinement reaction strategy derived from chelation reaction to generate NVP electrode materials with adjustable internal grains. The resulting ultrasmall grained carbon frame material exhibits ultrahigh rate performance and excellent low-temperature performance.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Hui Wan, Zhixiao Liu, Guangdong Liu, Shuaiyu Yi, Pengfei Yan, Huiqiu Deng, Wangyu Hu, Fei Gao
Summary: Electrochemical cycling induces transition-metal ion migration and oxygen vacancy formation in layered transition-metal oxides, causing performance decay. This study used ab initio calculations and atomic level imaging to explore the migration mechanisms in LiNi1/3Mn1/3Co1/3O2, revealing favorable pathways for transition-metal migration and the critical role of nickel in stabilizing layered cathodes. Insights from this study may lead to tailored layered cathodes with high structural stability and superior performance.
Article
Chemistry, Physical
Natalia Voronina, Hee Jae Kim, Minyoung Shin, Seung-Taek Myung
Summary: The study found that Ti substitution can improve the performance of sodium-ion battery cathode materials, including increasing initial capacity and capacity retention, as well as reducing volume changes. By pairing with a hard-carbon anode, Na[(Mn0.4Fe0.3Ni0.3)(0.9)Ti-0.1]O-2 achieved excellent cyclability and capacity retention for 300 cycles.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Ngo Quy Quyen, To Van Nguyen, Hoang Huu Thang, Pham Manh Thao, Nguyen Van Nghia
Summary: Adding carbon to the surface of P2-type sodium-lithium-manganese oxide material improves its rate capacity and specific capacity, making the carbon-coated NLM@C material a promising cathode material for sodium-ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Guorui Yang, Ziyi Zhou, Xiaofeng Liu, Yue Zhang, Silan Wang, Wei Yan, Shujiang Ding
Summary: The research indicates that hollow bowl-shaped porous carbon materials modified with graphene can act as high-performance anode materials for sodium-ion batteries, exhibiting high reversible capacity, excellent rate capability, and cycling stability. These materials possess good electrical conductivity and large surface area, which improve sodium ion adsorption and diffusion, leading to superior capacity and rate performance in sodium-ion batteries.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Analytical
Xiaowei Zhao, Yue Zhang, Tingting Liu, Mingjun Xiao, Baiting Du, Xi Lu, Fuliang Zhu, Yanshuang Meng
Summary: B, F and N tri-doped carbon hollow spheres (BFNHCS) were synthesized using polydopamine as C and N sources and ionic liquid as B and F sources. BFNHCS exhibited a large electrode/electrolyte interface, large interlayer spacing, and good conductivity due to the heteroatoms doping and hollow structure. As an anode material for sodium ion batteries, BFNHCS showed specific capacities ranging from 116.4 to 255.6 mAh g-1 at different current densities and maintained an excellent sodium-storage capacity of 136.5 mAh g-1 after 1000 cycles at 5.0 A g-1.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Sangjun Kim, Sanghyuk Park, Minsang Jo, Mincheol Beak, Jangho Park, Goojin Jeong, Ji-Sang Yu, Kyungjung Kwon
Summary: The study synthesized cathode active materials with varying Al content and examined the effects on physicochemical, thermal, and electrochemical properties. Results showed that increased Al content in the materials led to irregular particle shape and distribution, reduced initial charge/discharge capacity and cyclability, but improved rate capability. Residual Al was found to adversely affect capacity and cyclability, suggesting that trace amounts of Al in the materials can be tolerated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Quan Pei, Mingliang Lu, Xiaolin Liu, Dong Li, Xianfa Rao, Zhiliang Liu, Shengwen Zhong
Summary: Sodium-ion batteries (SIBs) are considered as a promising alternative to lithium ion batteries. This study focuses on synthesizing hollow micro-spherical sodium-ion cathode materials through a solid-state method, with Al-doped samples showing smaller particle size and superior high-rate capabilities. The hollow microsphere structure exhibits a higher capacity, with a first discharge capacity of 128 mAh g(-1) at 0.1C.
Article
Nanoscience & Nanotechnology
Xinyuan Luo, Hengfeng Tan, Ting Ma, Hui Wang, Miao Lv, Zhou Yu, Caiping Fu, Xinghua Chang, Shengming Jin
Summary: This research proposes a simple approach to achieve a high performance anode for sodium ion batteries by using polyaniline as the carbon source and SbCl3 as the metal source. The Sb/C-PANI electrode exhibits excellent sodium storage performance, featuring high reversible capacity and long lifespan. Such impressive performance will advance the development of Sb based anode materials for sodium storage.
Article
Engineering, Environmental
Zhenyan Liang, Mingzhi Yang, Shouzhi Wang, Bin Chang, Huayao Tu, Yongliang Shao, Baoguo Zhang, Huaping Zhao, Yong Lei, Jianxing Shen, Yongzhong Wu, Xiaopeng Hao
Summary: The study introduces a method to prepare hollow nickel-cobalt-manganese selenide submicrospheres, which exhibit superior lithium and sodium storage capacity, high reversible capacity, and good cycling stability.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Qi Zhang, Xuan-Wen Gao, Ying Shi, Wen-Bin Luo, Yang Li, Qin-Fen Gu, Hai-Ning Fan, Feng Li, Hua-Kun Liu
Summary: The content of cyclable sodium ions in sodium ion pouch cells can be determined efficiently and directly by alleviating sodium ion loss, and by exploring electrocatalytic-driven compensation methods. This technology not only enhances the performance of the battery, but also ensures the stability of the electrode materials, electrolyte, and the battery as a whole.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Physical
Yu -Long Xie, Li -Fang Guo
Summary: In this study, LiNi1/3Co1/3Mn1/3O2/Li2FeSiO4/C composite materials were successfully synthesized using the sol-gel method. The addition of carbon derived from the carbonization of citric acid improved the electronic conduction and enhanced the electrochemical performance. The LFS/C layer played a crucial role in improving electron and ion transfer and protecting against electrolyte attack.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Tianyu Chen, Zhibin Lu, Guangjin Zeng, Yongmin Xie, Jie Xiao, Zhifeng Xu
Summary: The study introduces a high-performance LSGM electrolyte-supported tubular DC-SOFC stack for portable applications, which shows great potential in developing into high-performing, efficient, and environmentally friendly portable power sources for distributed applications.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Wenbin Tong, Yili Chen, Shijie Gong, Shaokun Zhu, Jie Tian, Jiaqian Qin, Wenyong Chen, Shuanghong Chen
Summary: In this study, a three-dimensional porous NiO interface layer with enhanced anode dynamics is fabricated, forming a Schottky contact with the zinc substrate, allowing rapid and uniform zinc plating both inside and below the interface layer. The resulting NiO@Zn exhibits exceptional stability and high capacity retention.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yafeng Bai, Kaidi Li, Liying Wang, Yang Gao, Xuesong Li, Xijia Yang, Wei Lu
Summary: In this study, a flexible zinc ion supercapacitor with gel electrolytes, porous alpha-MnO2@reduced graphene oxide cathode, and activated carbon/carbon cloth anode was developed. The device exhibits excellent electrochemical performance and stability, even at low temperatures, with a high cycle retention rate after 5000 cycles.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Anmol Jnawali, Matt D. R. Kok, Francesco Iacoviello, Daniel J. L. Brett, Paul R. Shearing
Summary: This article presents the results of a systematic study on the electrochemical performance and mechanical changes in two types of commercial batteries with different anode chemistry. The study reveals that the swelling of anode layers in batteries with silicon-based components causes deformations in the jelly roll structure, but the presence of a small percentage of silicon does not significantly impact the cycling performance of the cells within the relevant state-of-health range for electric vehicles (EVs). The research suggests that there is room for improving the cell capacities by increasing the silicon loading in composite anodes to meet the increasing demands on EVs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yohandys A. Zulueta, My Phuong Pham-Ho, Minh Tho Nguyen
Summary: Advanced atomistic simulations were used to study ion transport in the Na- and K-doped lithium disilicate Li2Si2O5. The results showed that Na and K doping significantly enhanced Li ion diffusion and conduction in the material.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Zongying Han, Hui Dong, Yanru Yang, Hao Yu, Zhibin Yang
Summary: An efficient phase inversion-impregnation approach is developed to fabricate BaO-decorated Ni8 mol% YSZ anode-supported tubular solid oxide fuel cells (SOFCs) with anti-coking properties. BaO nanoislands are successfully introduced inside the Ni-YSZ anode, leading to higher peak power densities and improved stability in methane fuel. Density functional theory calculations suggest that the loading of BaO nanoislands facilitates carbon elimination by capturing and dissociating H2O molecules to generate OH.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Suresh Mamidi, Dan Na, Baeksang Yoon, Henu Sharma, Anil D. Pathak, Kisor Kumar Sahu, Dae Young Lee, Cheul-Ro Lee, Inseok Seo
Summary: Li-CO2 batteries, which utilize CO2 and have a high energy density, are hindered in practical applications due to slow kinetics and safety hazards. This study introduces a stable and highly conductive ceramic-based solid electrolyte and a metal-organic framework catalyst to improve the safety and performance of Li-CO2 batteries. The optimized Li-CO2 cell shows outstanding specific capacity and cycle life, and the post-cycling analysis reveals the degradation mechanism of the electrodes. First-principles calculations based on density functional theory are also performed to understand the interactions between the catalyst and the host electrode. This research demonstrates the potential of MOF cathode catalyst for stable operation in Li-CO2 batteries.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Ganghua Xiang, Zhihuan Qiu, Huilong Fei, Zhigang Liu, Shuangfeng Yin, Yuen Wu
Summary: In this study, a CeFeOx-supported Pt single atoms and subnanometric clusters catalyst was developed, which exhibits enhanced catalytic activity and stability for the preferential oxidation of CO in H2-rich stream through synergistic effect.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Dimitrios Chatzogiannakis, Marcus Fehse, Maria Angeles Cabanero, Natalia Romano, Ashley Black, Damien Saurel, M. Rosa Palacin, Montse Casas-Cabanas
Summary: By coupling electrochemical testing to operando synchrotron based X-ray absorption and powder diffraction experiments, blended positive electrodes consisting of LiMn2O4 spinel (LMO) and layered LiNi0.5Mn0.3Co0.2O2 (NMC) were studied to understand their redox mechanism. It was found that blending NMC with LMO can enhance energy density at high rates, with the blend containing 25% LMO showing the best performance. Testing with a special electrochemical setup revealed that the effective current load on each blend component can vary significantly from the nominal rate and also changes with SoC. Operando studies allowed monitoring of the oxidation state evolution and changes in crystal structure, in line with the expected behavior of individual components considering their electrochemical current loads.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Chiara Cementon, Daniel Dewar, Thrinathreddy Ramireddy, Michael Brennan, Alexey M. Glushenkov
Summary: This Perspective discusses the specific power and power density of lithium-ion capacitors, highlighting the fact that their power characteristics are often underestimated. Through analysis, it is found that lithium-ion capacitors can usually achieve power densities superior to electrochemical supercapacitors, making them excellent alternatives to supercapacitors.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Weihao Wang, Hao Yu, Li Ma, Youquan Zhang, Yuejiao Chen, Libao Chen, Guichao Kuang, Liangjun Zhou, Weifeng Wei
Summary: This study achieved an improved electrolyte with excellent low-temperature and high-voltage performance by regulating the Li+ solvation structure and highly concentrating it. The electrolyte exhibited outstanding oxidation potential and high ionic conductivity under low temperature and high voltage conditions, providing a promising approach for the practical application of high-voltage LIBs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Martin Bures, Dan Gotz, Jiri Charvat, Milos Svoboda, Jaromir Pocedic, Juraj Kosek, Alexandr Zubov, Petr Mazur
Summary: Vanadium redox flow battery is a promising energy storage solution with long-term durability, non-flammability, and high overall efficiency. Researchers have developed a mathematical model to simulate the charge-discharge cycling of the battery, and found that hydraulic connection of electrolyte tanks is the most effective strategy to reduce capacity losses, achieving a 69% reduction.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
M. Rodriguez-Gomez, J. Campo, A. Orera, F. de La Fuente, J. Valenciano, H. Fricke, D. S. Hussey, Y. Chen, D. Yu, K. An, A. Larrea
Summary: In this study, we analysed the operando performance of industrial lead cells using neutron diffraction experiments. The experiments revealed the evolution of different phases in the positive electrode, showed significant inhomogeneity of phase distribution inside the electrode, and estimated the energy efficiency of the cells.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Jiawei Liu, Chenpeng Wang, Yue Yao, Hao Ye, Yinglong Liu, Yingli Liu, Xiaoru Xu, Zhicong Chen, Huazheng Yang, Gang Wu, Libin Lei, Chao Wang, Bo Liang
Summary: The study focuses on utilizing double conductive Ni-pads as anode collectors in micro-tubular solid oxide fuel cells. The simulation results show excellent performance and stability of DCNPs, and also highlight the potential applications in various fields.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yang Wang, Kangjie Zhou, Lang Cui, Jiabing Mei, Shengnan Li, Le Li, Wei Fan, Longsheng Zhang, Tianxi Liu
Summary: This study presents a polyimide sandwiched separator (s-PIF) for improving the cycling stability of Li-metal batteries. The s-PIF separator exhibits superior mechanical property, electrolyte adsorption/retention and ion conductivity, and enables dendrite-free Li plating/stripping process.
JOURNAL OF POWER SOURCES
(2024)