Article
Energy & Fuels
Hong Zeng, Yawen He, Mohamad Chamas
Summary: A Si/Cu composite anode was prepared using a solid mechanosynthesis method and wet chemical etching. The addition of Al80Si20 and super p carbon improved the homogeneity and stability of Si/Cu distribution. The synthesized Si/Cu composites showed higher stability and performance after cycling.
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Electrochemistry
Tianxiang Yuan, Renheng Tang, Fangming Xiao, Shiyong Zuo, Ying Wang, Jiangwen Liu
Summary: The silicon suboxide (SiO) anode material shows promise for Lithium-ion batteries (LIBs) due to its high theoretical capacity, but it faces challenges such as large volume change (200%), low electrical conductivity, and low first Coulombic efficiency. A ternary composite ((SiOx/G/SnO2)@C) with a carbon coating layer is developed to address these issues, where graphite as part of the active materials improves Coulombic efficiency and controls volume change, and the carbon coating layer is designed to further restrain the high-volume change of SiOx. With the presence of SnO2, the composite exhibits improved electrochemical performance. Experimental results show that (SiOx/G/SnO2)@C achieves a first charging capacity of 382.6 mAh g(-1) at a current density of 100 mA g(-1), with the Coulombic efficiency improved from 62.2% to 74.9%. After 110 cycles, the capacity reaches 424.6 mAh g(-1) and the capacity retention rate is 103.9%.
ELECTROCHIMICA ACTA
(2023)
Article
Engineering, Chemical
Haodong Li, Yizhu Lai, Haoyu Li, Qing Yang, Zhiwei Yang, Zhuo Zheng, Yang Liu, Yan Sun, Benhe Zhong, Zhenguo Wu, Xiaodong Guo
Summary: In this study, it was found that nanoporous Si@C anodes prepared using larger particle size silicon exhibited better performance, providing significant guidance for industrial applications.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Physical
Hans Orthner, Hartmut Wiggers, Moritz Loewenich, Stefan Kilian, Stefan Bade, Julia Lyubina
Summary: Nanostructuring and designing silicon alloys are promising strategies to overcome the challenges of silicon in lithium ion batteries. The authors demonstrate an industrially scalable gas phase synthesis method to produce novel silicon/carbon-based particles with enhanced electrochemical performance. Discussing the fundamental principles and kinetics considerations for designing high-performance silicon/carbon-based materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Electrochemistry
Xiaohua Huang, Renqing Guo, Yan Lin, Yiqi Cao, Jianbo Wu
Summary: Si/SiC/C in-situ composite microspindles were fabricated using Zn2SiO4/C nanowire bundles obtained from hydrothermal synthesis and magnesiothermic reduction. SiC and C components were uniformly distributed at the nanoscale level within the microspindle particle, strengthening the structure. As an anode material for lithium-ion batteries, the Si/SiC/C composite microspindles exhibited excellent cyclic and rate performances, outperforming pure Si microspindles.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Jaehan Lee, Young-Min Kim, Ju-Han Kim, Jee-Woon Jeong, Donghyun Lee, Jae Wook Sung, Young Ju Ahn, Jae-Hyun Shim, Sanghun Lee
Summary: The study optimized the composition of a Si-Ti-Al alloy to achieve excellent electrochemical performance, with enhanced mechanical stability compared to pure silicon material.
Article
Chemistry, Physical
Yao Zhang, Chaoye Zhu, Zhihong Ma
Summary: Silicon has been widely accepted as a promising anode material for new-generation lithium-ion batteries due to its high lithium storage density and abundant mineral resources. This study proposed a simple and environmentally friendly method to prepare a Si-Cu3Si composite with coherent phase boundaries, which significantly improves the cyclic stability of silicon anodes. The effects of morphology, composition, and structure on the electrochemical performance of the nano-sized Si@Cu3Si anode were clarified through various analyses.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Hongshan Wei, Liyong Niu, Xiaohua Zhou, Yunru Zhang, Liwen Zhong, Yu Yang, Xiaoyuan Yu
Summary: Due to its high capacity and availability, silicon anode is a promising option for high-energy-density lithium-ion batteries. However, its volume expansion and low conductivity limit its practical applications. In this study, a SiOx/Si with good dispersion was synthesized and then coated with carbon to form a SiOx/Si/C composite. The optimized composite exhibited high specific capacity, excellent cyclability, and structural stability. This work provides a new idea for the design of future lithium-ion battery anode materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yanchen Ma, Aoming Huang, Yan Li, Hongcheng Jiang, Wen Zhang, Li Zhang, Linlin Li, Shengjie Peng
Summary: The study introduces the preparation of Si/N-doped carbon composite anode materials using recycled Si waste from the photovoltaic industry. The coating of Si micro/nano-plates with N-doped carbon facilitates electron transfer, inhibits volume expansion, and enhances the stability of the composites. This approach shows promising results in terms of high discharge capacity and cycling performance for the next generation of LIBs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Yan Cheng, Kun Wei, Zhaozhe Yu, Dianyuan Fan, Dong Liang Yan, Zhiliang Pan, Bingbing Tian
Summary: The study developed a ternary Si-SiO-Al composite film anode with exceptional conductivity, specific capacity, cycling stability, and rate performance, effectively buffering volume expansion and showing superior performance. Additionally, the composite film enhances the anode's electrical conductivity, demonstrating commercial potential.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Junying Zhang, Zhi-Ling Hou, Xiaoming Zhang, Chuanbo Li
Summary: In this study, Si@Cu composite anode material prepared by magnetron sputtering method showed enhanced electrochemical performance for lithium-ion batteries. The introduction of Cu component and carbon layer improved conductivity and cyclic performance of the electrode. The preparation methods are mass-productive and the magnetron sputtering method has broad application prospects.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Haining Yang, Weiqiang Kong, Jinpeng Yin, Wei Feng, ShaoFeng Xu, Liying Cui, Zhongsheng Wen
Summary: This study successfully demonstrated the construction of SnO/C@Si composite, achieving strategic excess Li-storage and bulk storage through job-sharing modes in artificial interfaces. Additionally, an outstanding surfacial pseudocapacitive effect, rarely mentioned in modified silicon electrode materials, was showcased.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Physical
Zhiwen Wang, Dong Cao, Mingxi Ren, Hanning Zhang, Limei Pan, Chuanfang John Zhang, Jian Yang
Summary: A Si@Ti3C2Tx composite with a fluffy and porous structure was prepared using a simple suspension mixing-freeze drying process, which can effectively improve the stability and cycling efficiency of silicon nanoparticles in lithium-ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Zehao Zhang, Xiang Liu, Youjun Lu, Haibo Li
Summary: This work proposes a facile covalent self-assemble strategy to prepare the ZrN@rGO composite for enhanced LIB. The results show that a strong Zr-C covalent bond is formed between ZrN and rGO, and electron transfer promotes charge density at the ZrN@rGO heterointerface. The volume change of ZrN can be effectively alleviated by coupling with rGO, leading to a high specific capacity in the lithium-ion battery.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Bhagath Sreenarayanan, Marta Vicencio, Shuang Bai, Bingyu Lu, Ou Mao, Shiva Adireddy, Wurigumula Bao, Ying Shirley Meng
Summary: The exponential growth of the semiconductor and solar industry in the past two decades has led to the generation of a large amount of silicon waste. This waste can be upcycled/recycled/reused to complete the circular economy and contribute to a sustainable world. In this study, an upcycled/recycled silicon was used with carbon as a composite anode material for lithium-ion batteries, demonstrating superior electrochemical performance and high energy density.
JOURNAL OF POWER SOURCES
(2023)
Review
Chemistry, Multidisciplinary
Wenhua Zuo, Alessandro Innocenti, Maider Zarrabeitia, Dominic Bresser, Yong Yang, Stefano Passerini
Summary: Sodium-ion batteries (NIBs) have emerged as ideal alternatives for large-scale energy storage systems due to their abundant resources, low-cost materials, and improved energy density and cycling stability. However, challenges such as irreversible phase transformations, poor air stability, and relatively high cost need to be addressed for the commercialization of NIBs. This Account discusses recent progress in the development of air-stable, electrochemically stable, and cost-effective NaxTMO2 cathode materials for NIBs.
ACCOUNTS OF CHEMICAL RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Gaopan Liu, Meng Xia, Jian Gao, Yong Cheng, Mingsheng Wang, Wenjing Hong, Yong Yang, Jianming Zheng
Summary: This study designed a localized high-concentration electrolyte (D-LHCE-F) containing dual-salt (LiFSI-LiPF6) and fluoroethylene carbonate (FEC) to improve the interfacial stability of silicon-based electrodes. The addition of FEC and the stable LiFSI salt promoted the formation of a protective SEI layer and increased the flexibility of the interface, enabling the electrode to adapt to volume changes. The SiOx/C electrode using this electrolyte retained 78.5% of its initial capacity after 500 cycles at 0.5C, surpassing the control electrolyte's capacity retention of 3.4%.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Xuerui Yang, Shijun Tang, Chenxi Zheng, Fucheng Ren, Yaxin Huang, Xinjie Fei, Wu Yang, Siyu Pan, Zhengliang Gong, Yong Yang
Summary: A versatile modification strategy was designed to convert contaminants on the LLZTO surface into a lithiophilic interface rich in LiF and Li2PO3F. The newly formed interfacial layer not only improved the interface wettability and corrosion resistance but also enabled stable cycling performance in all-solid-state batteries.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Junfeng Cui, Yang Sun, Huixin Chen, Yingying Yang, Guoxin Chen, Peiling Ke, Kazuhito Nishimura, Yong Yang, Chun Tang, Nan Jiang
Summary: This study reports the automatic self-healing capability of silicon nanowires, which are important building blocks for high-performance semiconductor nanodevices. Through in situ transmission electron microscopy tensile tests, a recovery of fracture strength (10.1%) on fractured silicon nanowires is achieved. Atomic-resolution characterizations and atomistic simulations reveal the self-healing mechanism and factors affecting the self-healing efficiency. Spontaneous rebonding, atomic rearrangement, and van der Waals attraction are responsible for the self-healing in silicon nanowires. The findings shed light on the self-healing mechanism of silicon nanowires and provide insights into developing high-lifetime and high-security semiconductor devices.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Physical
Jiabao Gu, Ziteng Liang, Jingwen Shi, Yong Yang
Summary: Sulfide-based all-solid-state batteries face serious and unavoidable problems in terms of the generation and evolution of electrochemomechanical stresses due to the lack of a liquid electrolyte. In order to understand and address these issues, highly sensitive probing techniques are needed to measure and bridge the relationship between electrochemical reaction process and internal stress evolution. This article provides a brief overview of recent progress in uncovering the origins of internal stresses, stress measurement principles and devices, and the application of stress-measuring techniques in sulfide-based all-solid-state batteries.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Ang Fu, Chuanjing Xu, Jiande Lin, Yu Su, Haitang Zhang, De-Yin Wu, Xiaozheng Zhang, Meng Xia, Zhongru Zhang, Jianming Zheng, Yong Yang
Summary: Increasing the cutoff charge voltage of LiCoO2 (LCO) poses a challenge in balancing high energy density and long cycling life. By adding 2,3-dimethylmaleic anhydride (DMMA) as an electrolyte additive, a stable and robust CEI film enriched with inorganic species is formed, preventing decomposition of electrolytes and erosion of LCO. Experimental techniques combined with theoretical calculations reveal the functioning mechanism. The addition of DMMA improves LCO's capacity retention after cycles, and the presence of other additives further enhances LCO's high-voltage stability.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Wengao Zhao, Kuan Wang, Romain Dubey, Fucheng Ren, Enzo Brack, Maximilian Becker, Rabeb Grissa, Lukas Seidl, Francesco Pagani, Konstantin Egorov, Kostiantyn V. Kravchyk, Maksym V. Kovalenko, Pengfei Yan, Yong Yang, Corsin Battaglia
Summary: The cycling life of LiNi0.8Co0.1Mn0.1O2 cells was improved by using additives, allowing for high upper cut-off voltage (4.5 V) and high electrode areal capacities (4.8 mAh/cm2). The additives improved the cathode/electrolyte interphase layer, reducing transition metal dissolution and cation-disordered layer formation on the cathode surface. These improvements resulted in enhanced capacity retention and prolonged cycling life.
MATERIALS TODAY ENERGY
(2023)
Article
Chemistry, Physical
Zhanning He, Maojie Zhang, Ke Zhou, Yong Cheng, Mingzeng Luo, Yu Su, Jialiang Hao, Yiou Sun, Yixiao Li, Yong Yang
Summary: Layered nickel-rich transition metal oxides have advantages of high energy density and reasonable cost, but suffer from volume changes that result in microcracks, fractures, and degradation of thermal stability during charge-discharge cycling. In this study, a codoping strategy of Mg and Ti in Li[Ni0.90Co0.05Mn0.05]O2 (NCM90) was proposed, achieving excellent cyclability (98.9% vs 86.6%) after 100 cycles. The enhanced electrochemical performance and reduced volume changes were confirmed by testing an NCM parallel to graphite full cell. This study provides valuable guidance for the application of high nickel cathodes in lithium-ion batteries with improved cycling and thermal stability.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Carlos Perez-Vicente, Rafaela Ariza, Wenhua Zuo, Yong Yang, Gregorio F. Ortiz
Summary: The insertion of magnesium ions in Mg-cells suppresses the sodium/vacancy ordering and Jahn-Teller effects observed in Na-cells. The Mg-cell exhibits different features from the Na-cell during discharge, suggesting the need for structure engineering on cathode materials to improve cell performance.
Article
Chemistry, Physical
Ziteng Liang, Yao Xiao, Kangjun Wang, Yanting Jin, Siyuan Pan, Jiangwei Zhang, Yuqi Wu, Yu Su, Haoyue Zhong, Yong Yang
Summary: Sulfide based all solid state batteries (ASSBs) with Ni-rich layered oxide cathode have high energy density and improved safety. This study systematically investigates the failure mechanisms of single crystal LiNi0.8Co0.1Mn0.1O2 (NCM811) in ASSBs and proposes three strategies to improve the electrochemical performance of the batteries.
ENERGY STORAGE MATERIALS
(2023)
Article
Energy & Fuels
Xuerui Yang, Yaxin Huang, Jianhui Li, Weilin Huang, Wen Yang, Changquan Wu, Shijun Tang, Fucheng Ren, Zhengliang Gong, Naigen Zhou, Yong Yang
Summary: The development of efficient electrolyte additives for high-energy density lithium||nickel-rich batteries remains a challenge. The utilization of lithium difluoro(oxalate) borate (LiDFOB) as a functional additive for Li||LiNi0.85Co0.1Mn0.05O2 batteries has been investigated comprehensively. The preferential reduction and oxidation decomposition of LiDFOB leads to the formation of a boron-rich interfacial film on both Li anode and NCM85 cathode, suppressing the consumption of active lithium and mitigating structural degradation of the cathode.
Article
Chemistry, Physical
Yuzhong Huang, Xiaodong Si, Ruohan Wang, Kangqiao Ma, Wendi Shi, Changzun Jiang, Yan Lu, Chenxi Li, Xiangjian Wan, Yongsheng Chen
Summary: A strategy for designing polymer acceptors with grafted SMA units via polymerization between central building blocks of SMAs and linkers is proposed. The polymer acceptors designed using this strategy not only free the end groups for effective packing but also form extended conjugation and double charge transport channels.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Materials Science, Multidisciplinary
Zhixiang Li, Changzun Jiang, Xin Chen, Guangkun Song, Xiangjian Wan, Bin Kan, Tainan Duan, Ekaterina A. Knyazeva, Oleg A. Rakitin, Yongsheng Chen
Summary: Three non-fullerene acceptors BTP-OC4, BTP-OC6, and BTP-OC8 with different 4-alkyloxyphenyl side-chains were synthesized via a new route without organotin reagent. The length of the alkyloxy group did not affect the energy levels and absorption of the acceptors, but it modulated the crystallinity and morphology of the active layer. The PM6:BTP-OC6 system showed the lowest energy loss of 0.513 eV, the highest power conversion efficiency of 17.59%, and excellent stability. Furthermore, when Y6 was introduced, the PCE increased to over 18%. Our study demonstrates a feasible strategy to develop high-performance acceptors by fine-tuning the aromatic side chain.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Zhaochen Suo, Jian Liu, Shitong Li, Zhaoyang Yao, Chenxi Li, Xiangjian Wan, Yongsheng Chen
Summary: Interface engineering with the molecule NMA-C0 as a modifying material on ZnO in inverted structure organic solar cells (OSCs) can simultaneously enhance the efficiency and stability of the cells. This study demonstrates that NMA-C0 modified devices achieve a significantly enhanced power conversion efficiency (PCE) of 18.31% with improved thermal and illumination stability compared to control devices.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Huazhe Liang, Hongbin Chen, Yalu Zou, Yunxin Zhang, Yaxiao Guo, Xiangjian Cao, Xingqi Bi, Zhaoyang Yao, Xiangjian Wan, Yongsheng Chen
Summary: This study successfully constructed three CH-series acceptors with hetero-di-halogenated central units, and obtained a high power conversion efficiency through CH-FB-based OSCs.
CHEMICAL COMMUNICATIONS
(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)