Article
Nanoscience & Nanotechnology
Xiaotang Shi, Tianle Zheng, Jianwei Xiong, Bingying Zhu, Ya-Jun Cheng, Yonggao Xia
Summary: A new synergistic positive and passive approach is proposed to construct a stable electrode-electrolyte interface at high voltage in lithium-ion batteries, resulting in significantly improved cyclic stability and capacity retention by adding small amounts of Li2S and AN. This study provides new principles guiding high-voltage lithium-ion batteries with excellent electrochemical performance.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Zhenghua Zhang, Jiugang Hu, Yang Hu, Hongmei Wang, Huiping Hu
Summary: This work investigates the effect of an advanced electrolyte additive on the performance of Ni-rich LiNixCoyMn1-x-yO2/graphite batteries. The results show that the additive induces the formation of robust electrolyte/electrode interphase, significantly improving the cycling performance and reducing the cell impedance. The capacity retention rate of the cells with the additive-based electrolyte can reach 90% after 600 cycles, which is considerably better than that of baseline batteries (70%). Mechanistic studies reveal that the additive suppresses the formation of fragile Li2CO3 and promotes the formation of more stable LiF, LixPOyFz, and additional organic phosphorus species on the electrode surface, thereby preventing cation disorder and irreversible phase transitions.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Digen Ruan, Min Chen, Xinyang Wen, Shuqing Li, Xianggui Zhou, Yanxia Che, Jiakun Chen, Wenjin Xiang, Suli Li, Hai Wang, Xiang Liu, Weishan Li
Summary: The novel electrolyte additive ATCN is proposed to enhance the stability of LiCoO2 cathode under high-voltage conditions, significantly improving cycling performance. Experimental and theoretical analyses show that ATCN preferentially oxidizes on the cathode, converting detrimental components in the electrolyte into a unique film texture that enhances cathode/electrolyte interface stability and overall cell cycling stability.
Article
Nanoscience & Nanotechnology
Jianwei Xiong, Tianle Zheng, Ya-Jun Cheng, Jialong Sun, Ruiguo Cao, Yonggao Xia
Summary: Increasing the working voltage of cathode by utilizing sulfur is an effective strategy to improve the energy density and cycling stability of lithium-ion batteries. The addition of a tiny amount of sulfur into the electrolyte solution suppresses side reactions and enhances the rate performance of the battery without causing excessive decomposition.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Chemistry, Physical
Zhaoyu Sun, Jingwei Zhao, Min Zhu, Jun Liu
Summary: This article summarizes the three interactional issues of high-voltage lithium-ion batteries in commercial electrolytes and proposes solutions and a framework for future research.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Jing Zhang, Jiapei Li, Longhao Cao, Wenhua Cheng, Ziyin Guo, Xiuxia Zuo, Chao Wang, Ya-Jun Cheng, Yonggao Xia, Yudai Huang
Summary: In this study, a new approach called surface targeted precise functionalization (STPF) is proposed to enhance the structural stability and electrochemical performance of NCM811 cathode material. The approach involves coating the NCM811 particle surface with 3-aminopropyl dimethoxy methyl silane (3-ADMS) and precise deposition of ascorbic acid via an acid-base interaction. This method leads to the formation of an ultra-thin spinel surface layer and a stable cathode-electrolyte interface, improving the electrochemical kinetics and inhibiting crack propagation. This research provides a feasible route to enhance the practical applications of high-energy density lithium-ion battery technology.
Article
Chemistry, Physical
Yanxia Che, Guanjie Li, Caixing Li, Yating Xiezhang, Wenguang Zhang, Lidan Xing, Weishan Li
Summary: The instability of the electrode/electrolyte interface is currently hindering the application of high-voltage cathodes. Electrolyte oxidation and product accumulation cause an increase in electrode polarization, leading to degradation in cycle life, rate capability, and low-temperature performance. This study proposed the use of a novel electrolyte film-forming additive, lithium tetraborate (Li2TB), to create a stable and low-impedance interphase on the Ni-rich cathode surface. The LiNi0.6Co0.2Mn0.2O2 (NCM622)/Li half-cell with 2 wt% Li2TB showed an increased capacity retention from 50% to 76% after 300 cycles. At low temperatures, the capacity retention with Li2TB was 99%, compared to 47% without the additive. The effectiveness of Li2TB in enhancing interphasial stability was further confirmed in a 2 Ah-grade NCM622/graphite pouch cell. The mechanism of the additive was proposed based on theoretical calculations and experimental results.
JOURNAL OF POWER SOURCES
(2023)
Article
Materials Science, Multidisciplinary
Yeowon Yoon, Seoyoon Shin, Moo Whan Shin
Summary: A high nickel content in the cathode results in a large discharge capacity but leads to structural collapse. The use of a polyaniline coating layer improves the structural stability and chemical state of the cathode. After a cycle test, the PANi-coated cathode demonstrates good structural stability and suppression of side reactions.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yeowon Yoon, Seoyoon Shin, Moo Whan Shin
Summary: Polyaniline (PANi) coating layer plays an important role in the structural stability and chemical states of Li-ion cathode materials, reducing structural collapse, cation mixing, and side reactions. After 50 cycles, PANi-coated LiNi0.9Co0.085Mn0.015O2 (PANi@NCM) exhibited improved performance with a capacity retention of 81%. Transmission electron microscopy analysis confirmed the maintained layered structure of PANi@NCM after cycling.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Physical
Arefeh Kazzazi, Dominic Bresser, Matthias Kuenzel, Maral Hekmatfar, Johannes Schnaidt, Zenonas Jusys, Thomas Diemant, R. Juergen Behm, Mark Copley, Krzystof Maranski, James Cookson, Iratxe de Meatza, Peter Axmann, Margret Wohlfahrt-Mehrens, Stefano Passerini
Summary: The research addresses the insufficient stability of the electrolyte towards oxidation in high-voltage lithium-ion cathode materials, and introduces a new combination of electrolyte additives to improve battery performance. The synergistic effect of TTSPi and TFEC additives significantly enhances cycling stability, capacity, and coulombic efficiency in lithium-ion cells with a voltage higher than 4.5 V, which can be further improved with the addition of lithium bis(oxalato)borate.
JOURNAL OF POWER SOURCES
(2021)
Article
Nanoscience & Nanotechnology
Da-Ae Lim, Young-Kyeong Shin, Jin-Hong Seok, Dayoung Hong, Kyoung Ho Ahn, Chul Haeng Lee, Dong-Won Kim
Summary: In this study, a TMAEPPi additive was synthesized to enhance the cycling characteristics and thermal stability of high-capacity NCM cathode materials. TMAEPPi formed a stable CEI layer, suppressing electrolyte decomposition and reducing material microcracking, which improved the performance of lithium-ion batteries.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Lianfeng Zou, Peiyuan Gao, Haiping Jia, Xia Cao, Haiping Wu, Hui Wang, Wengao Zhao, Bethany E. Matthews, Zhijie Xu, Xiaolin Li, Ji-Guang Zhang, Wu Xu, Chongmin Wang
Summary: Solid-electrolyte interphases (SEI) are crucial for maintaining the cycling stability of rechargeable batteries. The traditional approach of interphase design, which decomposes additives before the host electrolyte, is limited by thermodynamic rules. In this study, we propose an alternative method using a nonsacrificial additive, fluoroethylene carbonate (FEC), to enhance the cycling stability by modifying the chemistry, structure, and formation mechanism of the cathode-electrolyte interphase (CEI) layers in localized high-concentration electrolytes. Ab initio molecular dynamics simulations reveal that the FEC-Li+ coordinated environment activates usually inert species in interphase formation by altering their electronic states. This nonsacrificial additive opens up new possibilities for interphase design, utilizing commonly overlooked compounds with anodic stability.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Yiyao Xiao, Xiaotang Shi, Tianle Zheng, Ye Yue, Siqi Shi, Ya-Jun Cheng, Yonggao Xia
Summary: Increasing the working voltage of a layered oxide cathode is an efficient way to lift the energy density of lithium-ion batteries, but it can lead to uncontrollable side reactions and excessive electrolyte decomposition. Construction of a high-voltage stable solid-electrolyte interface (SEI) layer is crucial to enhance the electrochemical performance. In this study, trimethylene borate (TMEB) was used as a borate ester additive, which improved the cycling stability of NCM523 cells at 4.5V charging cutoff voltage.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Applied
Jie Wang, Hong Dong, Peng Wang, Xiao-Lan Fu, Ning-Shuang Zhang, Dong-Ni Zhao, Shi-You Li, Xiao-Ling Cui
Summary: The study shows that the TMSB additive affects the Li+ solvation structure beneficial for the cycle performance of lithium-ion batteries by forming a thin and dense CEI film, which improves the transfer of Li+ ions and enhances the performance of the batteries.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Physical
Wenlian Wang, Huilin Hu, Xueyi Zeng, Weizhen Fan, Tianxiang Yang, Xiaoyang Zhao, Chaojun Fan, Xiaoxi Zuo, Junmin Nan
Summary: Enhancing the flame retardancy of electrolytes and improving the quality of interface films are crucial for the safety and performance of lithium-ion batteries. The addition of PFPN, FPPN, and HFPN as flame-retardant additives in the functional electrolyte significantly improves the capacity retention and overall battery performance of NCM622/graphite pouch cells, without compromising safety.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Xiangzhen Zheng, Tao Huang, Ying Pan, Wenguo Wang, Guihuang Fang, Maoxiang Wu
JOURNAL OF POWER SOURCES
(2015)
Article
Chemistry, Physical
Xiangzhen Zheng, Wenguo Wang, Tao Huang, Guihuang Fang, Ying Pan, Maoxiang Wu
JOURNAL OF POWER SOURCES
(2016)
Article
Materials Science, Multidisciplinary
Tao Huang, Xiangzhen Zheng, Wenguo Wang, Ying Pan, Guihuang Fang, Maoxiang Wu
MATERIALS CHEMISTRY AND PHYSICS
(2017)
Article
Chemistry, Multidisciplinary
T. Huang, X. Z. Zheng, G. F. Fang, Y. Pan, W. G. Wang, M. X. Wu
Article
Chemistry, Physical
Xueyuan Wang, Muhammad Arsalan Ghausi, Rui Yang, Maoxiang Wu, Jiafang Xie, Yaobing Wang
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Chemistry, Multidisciplinary
T. Huang, X. Zheng, G. Fang, Y. Pan, W. Wang, M. Wu
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)