Article
Chemistry, Physical
Gyeongbin Ko, Seongdeock Jeong, Sanghyuk Park, Jimin Lee, Seoa Kim, Youngjun Shin, Wooseok Kim, Kyungjung Kwon
Summary: Lithium-ion batteries (LIBs) are crucial for the electric vehicle (EV) industry, and LiNi1-x-yCoxMnyO2 (NCM) is the dominant cathode material used in EV LIBs. Due to the need for increased driving range, Ni content in NCM is maximized, but the resulting Ni-rich NCM is unstable. Doping with foreign elements has been explored as a strategy to overcome this instability, with over 46 elements considered and their effects on LIB performance investigated in numerous research articles. This comprehensive analysis of various doping elements and their impact on LIB performance provides valuable insights for the LIB industry and academia.
ENERGY STORAGE MATERIALS
(2023)
Review
Electrochemistry
Jin Song, Hangchao Wang, Yuxuan Zuo, Kun Zhang, Tonghuan Yang, Yali Yang, Chuan Gao, Tao Chen, Guang Feng, Zewen Jiang, Wukun Xiao, Tie Luo, Dingguo Xia
Summary: Lithium-manganese-oxides have been a promising cathode material with environmental friendliness, resource abundance, and low biotoxicity. However, challenges such as Jahn-Teller distortion, manganese dissolution, and phase transition have hindered the progress of full manganese-based cathode materials (FMCMs). With the increasing demand for vehicle electrification and large-scale energy-storage grids, new research waves focusing on FMCMs are emerging. This review provides a comprehensive examination of the history, structures, advantages, challenges, resolution strategies, and latest developments of FMCMs, as well as discussing controversial topics in Li2MnO3-based cathode materials.
ELECTROCHEMICAL ENERGY REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Chunliu Li, Banglei Zhao, Junfeng Yang, Linchao Zhang, Qianfeng Fang, Xianping Wang
Summary: Li2ZrO3-coated and Al-doped micro-sized monocrystalline LiMn2O4 powder shows superior cycling and rate performance, attributed to the synergistic effect of Al-doping and Li2ZrO3-coating.
Article
Chemistry, Multidisciplinary
Jinli Liu, Yingqiang Wu, Bo Zhang, Xiang Xiao, Qiao Hu, Qiaofeng Han, Li Wang, Fengli Bei, Xiangming He
Summary: A solid-state synthesis process for LiMn1-yFeyPO4 (LMFP) was successfully developed. The study revealed that Fe ions diffuse more easily than Mn ions in the olivine framework, and LMFP exhibits good performance and cycling stability. These findings are important for the synthesis and performance improvement of LMFP materials.
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
Nanoscience & Nanotechnology
Songyan Bai, Byunghoon Kim, Chungryeol Kim, Orapa Tamwattana, Hyeokjun Park, Jihyeon Kim, Dongwhan Lee, Kisuk Kang
Summary: The use of MOF gel separators in organic batteries can effectively address electrode dissolution and shuttle effect issues, improving cycle stability and capacity retention. This technology has great potential for various applications, as the pore size can be tailored to specific organic electrode materials.
NATURE NANOTECHNOLOGY
(2021)
Review
Materials Science, Multidisciplinary
Xinwang Cao, Chang Ma, Lei Luo, Lei Chen, Hui Cheng, Raphael Simha Orenstein, Xiangwu Zhang
Summary: The addition of nanofiber materials to Li-ion batteries has been a significant advancement, as it provides unique structural features and enhances their electrochemical performance. This article discusses recent advancements in nanofiber materials for Li-ion batteries, including the synthesis, structure, and properties of nanofiber cathodes, anodes, separators, and electrolytes, as well as their applications. The challenges and prospects of nanofiber materials in Li-ion battery applications are also outlined.
ADVANCED FIBER MATERIALS
(2023)
Article
Chemistry, Physical
M. A. A. Mohamed, L. Singer, H. Hahn, D. Djendjur, A. Oezkara, E. Thauer, I. G. Gonzalez-Martinez, M. Hantusch, B. Buechner, S. Hampel, R. Klingeler, N. Graessler
Summary: In this study, an antiperovskite (Li2Fe)SeO material was synthesized using a one-step solid-state method. The material showed excellent thermal stability and high cycling performance, making it a promising cathode material for lithium-ion batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Axiang Li, Zhuolin Rong, Bing Yuan, Fangyi Cheng, Wangqing Zhang
Summary: We synthesized crosslinked polyimides by condensation polymerization between 3,4,9,10-perylenetetracarboxylic dianhydride and 1,2-ethanediamine in the presence of a trifunctional crosslinker of diethylenetriamine. The crosslinked polyimides exhibited a porous structure with a high surface area. When used as cathode materials in lithium metal half-cells, the crosslinked polyimides showed a high discharge capacity of 160.3 mA h g-1 at a current density of 30 mA g-1, and the assembled lithium-ion batteries retained 77% capacity after 2000 cycles at a current density of 150 mA g-1, surpassing the performance of batteries with linear polyimides.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Bingkai Zhang, Zhiwei He, Tiefeng Liu, Zeheng Li, Shaojian Zhang, Wenguang Zhao, Zu-Wei Yin, Zengqing Zhuo, Mingjian Zhang, Feng Pan, Shanqing Zhang, Zhan Lin, Jun Lu
Summary: This study introduces a gas-solid interface reduction reaction (GSIRR) to improve the interfacial compatibility between cathodes and solid-state electrolytes in all-solid-state lithium-ion batteries (ASSLBs). The application of a surface reconstruction layer (SRL) results in high capacity, remarkable cyclability, outstanding rate capability, and exceptional stability in high-loading cathode. Moreover, the GSIRR mechanism can be applied to various cathode materials and other reducing gases, indicating its practical universality.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Armance Sagot, Lorenzo Stievano, Valerie Pralong
Summary: This study reports the synthesis and electrochemical activity of a novel polymorph of K3MnO4, which has a 0D-type structure composed of isolated MnO4 tetrahedra and K+ ions. A reversible charge capacity of almost one K+ per unit formula at an average voltage of 2.3 V vs K+/K is achieved, leading to the reversible formation of K2MnO4 through a biphasic process.
ACS APPLIED ENERGY MATERIALS
(2023)
Review
Chemistry, Analytical
Ruqian Ding, Shiyu Tian, Kaicheng Zhang, Jingrui Cao, Yi Zheng, Weichao Tian, Xiaoyan Wang, Lizhi Wen, Li Wang, Guangchuan Liang
Summary: The growing interest in electric vehicles and energy storage systems has increased the demand for lithium-ion battery technologies capable of providing high capacity and high energy density. Prelithiation of cathodes is a simpler method compared to anode prelithiation, and many studies are focused on finding suitable cathode additives to enhance the electrochemical performance of existing lithium-ion batteries. Challenges in effective cathode prelithiation additives and the development direction of prelithiation technology are discussed in the article.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Shihan Zeng, Qinxin Xu, Hongjun Jin, Lingxing Zeng, Yiyi Wang, Wenbin Lai, Qi Yao, Jixiang Zhang, Qinghua Chen, Qingrong Qian
Summary: Due to the concern about resource shortage and environmental pollution caused by the widespread use of lithium-ion batteries, the recycling of spent lithium-ion power batteries in electric vehicles becomes urgent. In this study, a one-pot method is reported to recover FePO4 from spent LiFePO4 cathode powder, which is then successfully used as cathode materials for lithium/sodium-ion batteries for the first time. By optimizing the FePO4 with graphene oxide coating, the electrochemical performance can be further improved.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Shunqiang Chen, JiaJia Fan, Zhuangzhuang Cui, Lijiang Tan, Digen Ruan, Xin Zhao, Jinyu Jiang, Shuhong Jiao, Xiaodi Ren
Summary: A new ether electrolyte, 1,3-dimethoxypropane (DMP), forms a chelating complex with Li+ ions, suppressing oxidation side reactions and improving cycling performance of nickel-rich cathodes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Electrochemistry
Jianyuan Wu, Cho-Jen Tsai
Summary: Numerical modeling of electrolyte oxidation based on the Butler-Volmer equation evaluates the relative importance of irreversible reactions in high voltage lithium-ion battery charging processes. By optimizing charging procedures, the electrolyte oxidation related irreversible reactions can be controlled to achieve high-performance battery charging.
ELECTROCHIMICA ACTA
(2021)
Article
Engineering, Environmental
Changliang Du, Youqi Zhu, Xinyu Yang, Zhao Lv, Jiachen Tian, Xiao Pei, Xin Liu, Xilan Ma, Jianhua Hou, Chuanbao Cao
Summary: By in-situ anion substitution with heavy element tellurium, lattice expansion is achieved to improve the lithium ion storage performance of Cu7.2S4 nanotube cathode, delivering high discharge capacity of 354.1 mAh g(-1) at 0.1 A g(-1) and remarkable rate capability of 85.1 mAh g(-1) at large current loading of 2.0 A g(-1). The reinforced Te-substitution generates lattice expansion and effectively adjusts the Mg2+ storage reaction, leading to significant improvement in Mg2+ storage performances of Te-substituted Cu7.2S4 nanotube, which holds great potential in electrode material modification for improving battery chemistry.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Chen Qiao, Yingying Hao, Chuanbao Cao, JiaTao Zhang
Summary: As an important semi-reaction process in electrocatalysis, the oxygen evolution reaction (OER) is closely associated with various reactions such as electrochemical hydrogen production, CO2 electroreduction, and electrochemical ammonia synthesis. Recent observations using in situ characterization technology have identified metastable high-valence metal sites as efficient catalytic sites for OER. This review focuses on the transformation mechanism of high-valence metal sites, particularly in transition metal materials (Co- and Ni-based), and summarizes the research progress in optimizing OER performance through the transformation process and role of high-valence metal sites. The challenges and prospects of designing high-efficiency OER catalysts based on this mechanism and new in situ characterizations are also discussed.
Article
Chemistry, Physical
Jiachen Tian, Youqi Zhu, Xiuyun Yao, Lifen Yang, Changliang Du, Zhao Lv, Minchen Hou, Shaolong Zhang, Xilan Ma, Chuanbao Cao
Summary: This study presents a one-pot chemical vapor deposition strategy to fabricate N-coordinated Fe single-atom (Fe-SA/NC) catalysts for highly effective oxygen reduction reaction (ORR) under alkaline conditions. The ferrocene(ii) powder is sublimated into vapor sources, trapped by nitrogen-rich zeolitic imidazolate frameworks (ZIFs), and transformed into isolated Fe-N sites through subsequent pyrolysis. The atomically dispersed Fe species coordinated with nitrogen atoms show superior ORR performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Engineering, Environmental
Xin Liu, Youqi Zhu, Changliang Du, Jiachen Tian, Lifen Yang, Xiuyun Yao, Zhitao Wang, Xilan Ma, Jianhua Hou, Chuanbao Cao
Summary: A cation-doping strategy is reported to regulate the electrochemical Mg2+ storage behaviors of Co-doped CuS nanosheet cathodes. With cationic Co-doping, the optimized cathodes exhibit fast electrochemical diffusion kinetics, optimized reversible redox reaction, and enhanced long-term cyclic life. The improved performance can be attributed to the cation-doping effect that efficiently accelerates Mg2+ diffusion kinetics.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Xiuyun Yao, Youqi Zhu, Tianyu Xia, Zhanli Han, Changliang Du, Lifen Yang, Jiachen Tian, Xilan Ma, Jianhua Hou, Chuanbao Cao
Summary: A modified pyrolysis strategy is proposed to tune the carbon defects in copper single-atom catalysts (Cu-SACs), which can enhance the oxygen reduction reaction (ORR) activity. The optimized Cu-SACs with controllable carbon defect degree and increased active specific surface area exhibit improved ORR activity and show promising potential for energy applications. The discovery of the positive effect of carbon defects on the ORR activity offers a universal strategy for fabricating high-efficiency single-atom catalysts with superior active sites.
Article
Multidisciplinary Sciences
Zilong Wu, Xiangyu Liu, Haijing Li, Zhiyi Sun, Maosheng Cao, Zezhou Li, Chaohe Fang, Jihan Zhou, Chuanbao Cao, Juncai Dong, Shenlong Zhao, Zhuo Chen
Summary: Photoelectrochemical water splitting using a CdS-CdSe/MoS2/NiFe layered double hydroxide photoanode shows low potential and large photocurrent gains due to the formation of highly oxidized Ni species under illumination. The as-prepared photoelectrode requires a low potential of 1.001 V for a photocurrent density of 10 mA cm(-2), significantly lower than the theoretical water splitting potential. The generated current density remains at 95% after long-term testing, opening avenues for designing high-efficiency photoelectrochemical catalysts.
NATURE COMMUNICATIONS
(2023)
Article
Physics, Applied
Yingying Hao, Chen Qiao, Shuping Zhang, Yibin Zhu, Lei Ji, Chuanbao Cao, Jiatao Zhang
Summary: In this work, cationic vacancy defects were introduced into NiFe-LDH nanosheets using the coordination capacity of tributylphosphine, leading to optimized exposure ability of active sites and improved intrinsic catalytic capacity through tuning local electronic structure. X-ray photoelectron spectroscopy results revealed the presence of high-valence Ni and Fe on the surface of the repaired d-NiFe-LDH, which is considered the main reason for the improvement in intrinsic catalytic capacity. Finally, the d-NiFe-LDH nanosheets exhibited excellent catalytic performance and remarkable long-term stability.
ENERGY MATERIAL ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Chen Qiao, Zahid Usman, Jie Wei, Lin Gan, Jianhua Hou, Yingying Hao, Youqi Zhu, Jiatao Zhang, Chuanbao Cao
Summary: A catalyst kinetics optimization strategy is proposed based on tuning active site intermediates adsorption. The construction of M-OOH on the catalytic site before the rate-determining step is crucial in this strategy, as it optimizes the overall catalytic kinetics by preventing competition from other intermediates. Through significantly reducing the kinetic energy barrier, M-OOH is formed on the active site at low overpotential, resulting in improved kinetics.
Article
Chemistry, Physical
Zhanli Han, Youqi Zhu, Xiuyun Yao, Hui Peng, Changliang Du, Jiachen Tian, Lifen Yang, Xilan Ma, Jianhua Hou, Chuanbao Cao
Summary: Charge regulation on FeN4 sites is achieved through non-bonding interaction of adjacent nitrogen to improve the intrinsic ORR activity of single atomic Fe catalysts. The single atomic Fe catalysts exhibit excellent alkaline ORR activity, with a higher kinetic current density than Pt/C catalysts. The compensation of secondary nitrogen allows for greater Fe loading, sufficient O2 activation sites, and optimized oxygen intermediate adsorption/desorption, leading to enhanced ORR kinetics. Moreover, the single atomic Fe catalysts demonstrate long-term cycling stability and flexibility in both liquid and solid zinc-air batteries.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Xiuyun Yao, Youqi Zhu, Zhanli Han, Lifen Yang, Jiachen Tian, Tianyu Xia, Hui Peng, Chuanbao Cao
Summary: The formation of isolated Fe sites is investigated through a solvent-mediated oxidative pyrrole polymerization strategy. The slow reaction kinetics of oxidative Fe3+ ions with the predesigned methanol solvent molecules can result in highly dispersed Fe sites in polypyrrole and thus Fe single-atom catalysts after pyrolysis. The Fe single-atom catalyst shows superior oxygen reduction reaction activity and excellent cycling stability in Zn-air batteries.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Lifen Yang, Youqi Zhu, Xiuyun Yao, Changliang Du, Zhanli Han, Jiachen Tian, Xin Liu, Xilan Ma, Chuanbao Cao
Summary: This study reports on a new efficient precious-metals-free electrocatalyst Fe-SA/NC, which is constructed by molten salt-assisted pyrolysis to create carbon nanocages with highly atomically dispersed Fe-N4 sites as air cathode. The catalyst exhibits outstanding catalytic activity and cycling stability, and delivers high power density and long-term durability in Znair batteries.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Physical
Xiao Pei, Youqi Zhu, Changliang Du, Hui Peng, Zhitao Wang, Xilan Ma, Jianhua Hou, Chuanbao Cao
Summary: Single-crystal Cu(9)S(5) nanorods fabricated via an efficient microwave-assisted synthesis method demonstrate fast ion diffusion, favorable long-term stability, and exceptional rate performance in sodium-ion batteries. This work provides insights for developing high-rate anode materials for sodium-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Xin Liu, Qianwei Zhang, Changliang Du, Xiao Du, Youqi Zhu, Chuanbao Cao
Summary: Rechargeable magnesium batteries (RMBs) are potential rivals to replace lithium-ion batteries as next-generation energy storage devices. However, the limited choice of high-performance cathode materials hinders the applications of RMBs. Copper chalcogenides have gained attention as prospective electrode materials due to their high theoretical capacity, but the challenge lies in achieving high energy density and rapid kinetics of Mg2+ insertion/extraction. This review presents a comprehensive summary of the reaction mechanisms of copper chalcogenide cathodes for ion storage and highlights five design and modification strategies for enhancing their performance.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Yujun Wu, Wei Shuang, Lin Yang, Chuanbao Cao
Summary: An extremely simple one-step pyrolysis method for the synthesis of P,S,N-doped graphene is reported in this study, which is further used as an efficient metal-free electrocatalyst for the oxygen reduction reaction (ORR). The optimized ternary-doped graphene exhibits excellent ORR catalytic activity favoring the four-electron ORR process and remarkable long-term durability due to the synergistic coupling effect between P, S, and N. Density functional theory (DFT) calculations reveal the synergistic coupling effect between doping elements in the ORR process. This work provides a promising approach for the synthesis of P,S,N-doped graphene for electrochemical energy conversion and storage devices.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Muhammad Kashif Naseem, Mian Azmat, Changliang Du, Rong Jiang, Youqi Zhu, Meishuai Zou, Chuanbao Cao
Summary: RMBS is considered a promising candidate device for future commercialization due to its theoretically higher volumetric capacity, natural abundance, low cost, dendrite free characteristic, and ecofriendly nature. However, the potential application of RMBS is hindered by the low capabilities caused by the sluggish diffusion kinetics of the highly polarized Mg2+ ions. This study focused on enhancing the diffusion contribution of Mg2+ ions in VS4 cathodic materials by synthesizing nanosized particles and introducing sulfur vacancies through nickel substitution. The results showed significant improvement in the diffusion of Mg2+ ions, leading to enhanced cathodic performance and improved electrochemical properties, making it an effective strategy for developing efficient VS4 cathodes for RMBS.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
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)
