Article
Chemistry, Physical
Sunwook Kim, Sungmin Na, Joonchul Kim, Tae Hwan Jun, Myoung Hwan Oh, Kyoungmin Min, Kwangjin Park
Summary: This study focuses on finding a coating material to replace cobalt in order to address the issues of Ni-rich cathode materials. The Ni/Hf coated sample shows higher initial capacity, improved rate capability, higher Li-ion diffusion coefficient, reduced charge-transfer resistance, enhanced cycle retention, and the ability to suppress side reactions and large volume change compared to other coatings and the pristine sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
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)
Article
Chemistry, Multidisciplinary
Kyu-Young Park, Yizhou Zhu, Carlos G. Torres-Castanedo, Hee Joon Jung, Norman S. Luu, Ozge Kahvecioglu, Yiseul Yoo, Jung-Woo T. Seo, Julia R. Downing, Hee-Dae Lim, Michael J. Bedzyk, Christopher Wolverton, Mark C. Hersam
Summary: This study investigates the degradation mechanisms of cobalt-free LiNiO2 at high voltages, and finds that lattice oxygen loss plays a critical role in the formation of irreversible stacking faults during cycling. By using a graphene coating, the oxygen loss is attenuated, leading to improved high-voltage capacity retention of LiNiO2.
ADVANCED MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Yining Zou, Zuoxing Guo, Lin Ye, Yuhuan Cui, Kaiwen Zheng, Lijun Zhao
Summary: Transition metals and their oxides are widely studied as anode materials for lithium-ion batteries due to their high theoretical capacities. A porous raspberry-like nickel-enhanced MnO-based carbon-containing composite (Ni/MnO-C) has been successfully synthesized, increasing the specific capacity of LIBs. The porous nanostructure provides buffer space to prevent structural damage and, when broken into smaller nanoparticles, exposes more active sites for additional capacities.
ACS APPLIED NANO MATERIALS
(2021)
Article
Electrochemistry
Bo-Yi Lee, Marcin Krajewski, Ming-Kuen Huang, Panitat Hasin, Jeng-Yu Lin
Summary: In this study, spinel LiNi0.5Mn1.5O4 (LNMO) was coated with Al2O3 thin film using atomic layer deposition (ALD) and demonstrated superior electrochemical stability as a promising cathode material for high-temperature operation in lithium ion batteries (LIBs). The optimized LNMO-Al2O3 electrode with a thin layer of approximately 2 nm achieved high capacity retention and effectively stabilized the cathode electrolyte interface (CEI) at elevated temperatures, making it a viable option for high-voltage LIBs.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2021)
Article
Chemistry, Physical
Yongjian Yu, Xiaoya Zhang, Li He, Fengxue Duan, Junjie Ba, Chunzhong Wang, Yingjin Wei, Yizhan Wang
Summary: To address the issues of shuttle effect and inadequate conductivity in lithium-sulfur batteries, researchers introduced mixed Mn4+/Mn3+ valence states in polar δ-MnO2 nanosheets through a facile annealing method. This led to enhanced redox kinetics of polysulfides. The treated MnO2 maintained its 2D morphology, providing abundant absorption sites, while the introduction of mixed valence states improved charge transfer and reaction kinetics. As a result, the lithium-sulfur battery achieved high areal capacities of 7.0 mAh cm(-2) at 0.56 mA cm(-2) and 4.0 mAh cm(-2) at 1 mA cm(-2) after 100 cycles with a sulfur loading of 10.91 mg cm(-2) and an E/S ratio of 6.46 μL mg(-1).
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Sungyup Jung, Dohee Kwon, Sanghyuk Park, Kyungjung Kwon, Yiu Fai Tsang, Eilhann E. Kwon
Summary: The study investigates the valorization of battery electrolyte through CO2-assisted thermolysis, converting it into syngas for maximizing recovery of organic and metallic compounds in spent batteries.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Materials Science, Multidisciplinary
Jin Liu, Xingcheng Xiao, Daad Haddad, Qinglin Zhang, Mei Cai, Sherman Zeng
Summary: The study shows that using lithium-ion exchanged zeolite (Li-zeolite) as an additive to cathode electrodes can improve battery cycle life, especially performing better at high temperatures. Li-zeolite is envisioned as a low-cost and scalable path to enhance the performance of LMO and LMO blended electrodes.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Nanoscience & Nanotechnology
Giseung Lee, Kwangeun Jung, Yongho Lee, Jeonghan Kim, Taeeun Yim
Summary: Functionalized nickel-rich lithium metal oxide cathode materials using nano-titanium silicate as coating showed improved cycling performance in lithium-ion batteries by inhibiting electrolyte decomposition and maintaining particle hardness. This study demonstrates the potential of nano-titanium silicate as an effective coating material for enhancing the cycling behavior of lithium-ion batteries.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Chao Zou, Yun Huang, Ling Zhao, Wenhao Ren, Zhixing Zhao, Jiapin Liu, Xing Li, Mingshan Wang, Bingshu Guo, Yuanhua Lin
Summary: This study utilizes branched polyethyleneimine as a functional binder to address the electrode deterioration and capacity decay caused by the dissolution of transition metal ions. The binder can effectively absorb soluble transition metal ions, reduce the loss of active materials, and achieve uniform distribution of key components. This leads to improved rate capability and cycle stability of the battery.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Donghyeon Kang, Robert E. Warburton, Anil U. Mane, Jeffrey Greeley, Jeffrey W. Elam
Summary: In this study, the effects of different Al precursors on the growth chemistry, interfacial structure, and electrochemistry of Al2O3 coatings on LMO surfaces were investigated. The results show that the Lewis acid-base properties of the Al precursor ligands can be used to control the Mn oxidation states and the coverage of Al2O3 on the LMO surface. Theoretical calculations and experimental measurements support this finding and provide insights into the reaction mechanism and thermochemistry. This research has important implications for atomic level control of functionalized interfaces in various applications.
APPLIED SURFACE SCIENCE
(2022)
Article
Electrochemistry
David Kitsche, Florian Strauss, Yushu Tang, Nikolai Bartnick, A-Young Kim, Yuan Ma, Christian Kuebel, Juergen Janek, Torsten Brezesinski
Summary: Inorganic solid-state batteries have limitations compared to conventional liquid electrolyte-based lithium-ion batteries. The search for advanced coatings to protect the cathode materials in solid-state batteries is a challenge. This study successfully modified the surface of a Ni-rich cathode material using a sol-gel chemistry method, resulting in improved protection and performance.
BATTERIES & SUPERCAPS
(2022)
Article
Chemistry, Physical
Alexandra Henriques, Amin Rabiei Baboukani, Borzooye Jafarizadeh, Azmal Huda Chowdhury, Chunlei Wang
Summary: This study explores a method for controlling the conductivity and volume change of SnO2 by encapsulating nanoparticles in carbon nanotubes. The synthesized composite demonstrated enhanced reversible capacity and higher specific capacity, making it a suitable anode material for lithium-ion batteries.
Article
Materials Science, Ceramics
Ying-Jeng James Li, Wen-Chen Chien, Chia-Ju Tang, She-Huang Wu, Yi-Shiuan Wu, Chun-Chen Yang
Summary: In this study, Li-rich Li1.2Ni0.13Mn0.54Co0.13O2 (LMNCO) composite cathode material with hierarchical nano/micro-sphere structures was synthesized through a two-step spray-drying method. Surface modification with polyimide (PI) at different weight ratios improved the electrochemical properties of the LMNCO cathode, leading to enhanced cycle stability and discharge capacity. The PI-coated LMNCO composite cathode materials show potential for use in high-performance lithium-ion batteries.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Chunxiao Xu, Yayong Li, Ryan A. Adams, Vilas G. Pol, Yang Xiao, Arvind Varma, Pengwan Chen
Summary: A carbon-coated NiO/Ni (NiO/Ni@C) composite was successfully synthesized via a one-step solution combustion method, showing high reversible specific capacity and excellent rate performance as anode material for lithium and sodium ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
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)