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
Chemistry, Physical
Qiao Hu, Yanzhou Wu, Dongsheng Ren, Jiaying Liao, Youzhi Song, Hongmei Liang, Aiping Wang, Yufang He, Li Wang, Zonghai Chen, Xiangming He
Summary: Layered LiNi0.6Co0.2Mn0.2O2 (NCM622) is attracting attention for its high energy density and moderate thermal stability. However, the low initial coulombic efficiency (ICE) of the material limits its maximum capacity utilization. This study reveals that the dominant contributors to the initial capacity loss are the slow Li+ diffusion kinetics and irreversible O3/H1-3 phase transition, while parasitic reactions at the cathode/electrolyte interface have a smaller impact. These findings provide new insights for further improvement and utilization of NCM622.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Physical
JiongJian Gao, Kaidan Wu, Yefeng Feng, Xiaoqian Deng, Yukun Sun, Weiyi Xu, Miao He
Summary: SnO2/Fe2O3/graphene nanocomposite material prepared by ball milling exhibits excellent electrochemical performance and cycling stability.
Article
Materials Science, Multidisciplinary
Tianci Li, Wenkai Yang, Jing Wang, Yanchao Lan, Shaowei Yao, Chunmei Wang, Ying Wang
Summary: A transition metal compound with high lithium storage, the root-like MnCO3/Fe2O3/CNTs composites with porous structure, was synthesized by solvothermal methods. The composites exhibited excellent cycling stability and high-rate performance, achieving 651.3 mAh/g at 100 mA/g after 250 cycles and 631.5 mAh/g at 500 mA/g after 1000 cycles, benefiting from the porous structure and synergy among MnCO3, Fe2O3, and carbon nanotubes. The porous structure reduced charge-transfer resistance and the extra void effectively alleviated volume expansion during charge/discharge process.
Article
Chemistry, Multidisciplinary
Chenran Hao, Tiange Gao, Jiulin Wang, Anbao Yuan, Jiaqiang Xu
Summary: A three-dimensional heterostructure composite (gamma-Fe2O3/PC-rGO(60)) was prepared to improve the cycling performance and charge capacity of lithium ion batteries.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Chemistry, Physical
Xiuli Ge, Ning Li, Xuefang Yu, Jianbo Cheng, Siliang Chang, Qian Zhao, Hongtao Cui, Kai Feng, Shanshan Liu, Xin Yang
Summary: The new tungstate anode material Li2Ni(WO4)(2)/C shows promising performance in lithium-ion batteries, with high specific capacity and multi-electronic reactions. The carbon coating improves conductivity and particle size, resulting in good cycle stability and rate performance for the material.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Ying Li, Ting-Feng Yi, Xuezhong Li, Xueqi Lai, Jingjing Pan, Ping Cui, Yan-Rong Zhu, Ying Xie
Summary: Li2ZnTi3O8/alpha-Fe2O3 composites, prepared via hydrothermal process, exhibit excellent electrochemical properties with high reversible charge capacity and stability, showing potential as anode materials for next-generation rechargeable Li-ion batteries. The formation of strong covalent bonds between Li2ZnTi3O8 and alpha-Fe2O3 contributes to the improved performance of the composites.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Li Wang, Qiwei Tang, Changfeng Zhao, Shuai Zhang, Haijing Zhao
Summary: SiO/carbon composite with network-liked carbon coating layer was prepared using a two-step spray-drying and subsequent pyrolysis method. This structure not only effectively prolongs the cycle performance but also greatly improves the rate capability. The obtained composite shows a reversible capacity of 1119.4mAh.g(-1) after 100 cycles at a current density of 200 mA.g(-1). Increasing the current densities to 500 mA.g(-1) and 1000 mA.g(-1), the capacity can still maintain at 887.2mAh.g(-1) and 577.7mAh.g(-1), respectively, indicating the network-liked carbon coated SiO reported in this paper is a promising anode material for lithium-ion batteries.
Article
Chemistry, Physical
Fen Wang, Tengfei Li, Yuan Fang, Zijing Wang, Jianfeng Zhu
Summary: Heterogeneous structured Mn2O3/Fe2O3 composites were designed and studied as anode materials for lithium ion batteries, demonstrating superior specific capacity, excellent cycling stability, and outstanding rate capability. The feasibility of a full lithium ion battery with heterostructure Mn2O3/Fe2O3 as anode and LiFePO4 as cathode was also verified, showing great performance in improving electrochemical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Hang Dong, Mingxia Deng, Du Sun, Yantao Zhao, Hao Liu, Miao Xie, Wujie Dong, Fuqiang Huang
Summary: Fe2O3 is a promising candidate for lithium-ion battery anode due to its high specific capacity, low cost, and environmental friendliness. However, it suffers from capacity fading and insufficient rate performance. By encapsulating Fe2O3 with lithium phosphate, the anode exhibits improved cycling stability and fast conversion reactions, leading to enhanced discharge performance.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Zi-Long Wu, Shan-Bao Ji, Lie-Kai Liu, Tian Xie, Long Tan, Hao Tang, Run-Guang Sun
Summary: Silicon monoxide (SiO) is considered to be a promising anode material for lithium-ion batteries with higher capacity and longer cycle life. In this study, glucose was used as a carbon source to synthesize SiO/C composite with high performance. Optimal conditions for SiO/C synthesis were found to be the addition of 5 wt% glucose and a calcination temperature of 800 degrees C. The resulting SiO/C material showed excellent electrochemical performance and stability, making it suitable for LIB applications.
Article
Chemistry, Physical
Jay Singh, Seulgi Lee, Priya Yadav, Sungjin Kim, Jaekook Kim, Alok Kumar Rai
Summary: In this study, a hydrothermal synthesis method was used to produce a mulberry-like mesoporous CoMoO4 anode material with improved electrochemical properties for lithium ion and sodium ion batteries. The unique morphology of the CoMoO4 material led to high reversible discharge capacity and long cycle stability, making it a promising alternative high-performance anode material for sodium ion battery applications.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Memona Idrees, Abid Inayat, Irfan Ullah, Karma Albalawi, Sami Ullah, Shahid Bashir, S. Wageh, Ali Haider, Ata-ur Rehman, Syed Mustansar Abbas, Qin Zhang, Xuanke Li
Summary: In this study, a hierarchically nanostructured lithium-ion storage anode material was developed by partial nitridation of Fe2O3 nanospheres anchored on reduced graphene oxide sheets. The incorporation of electron-rich N-moiety and the graphene network contribute to the superior cycling stability and rate performance of the material.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Zhihao Huang, Guoju Dang, Wenping Jiang, Yuanyu Sun, Meng Yu, Quansheng Zhang, Jingying Xie
Summary: Silicon monoxide (SiO) is a promising alternative anode material due to its high theoretical capacity, operating voltage, and low cost, but faces challenges such as volume change and poor electrical conductivity. By coating SiO with a carbon layer using polyvinyl pyrrolidone (PVP) as a carbon source, the composite material shows improved electrochemical performance, high capacity retention, and cycling stability. High-resolution transmission electron microscopy (HRTEM) and Raman spectra confirm the presence of an amorphous carbon layer on SiO's surface.
Article
Materials Science, Ceramics
Chenxu Wang, Pedaballi Sireesha, Jing Shang, John S. McCloy, Jin Liu, Wei -Hong Zhong
Summary: This study presents a green synthesis method to fabricate stable porous Fe2O3 as an anode material for Li-ion batteries. The synthesized material effectively accommodates volume change, reduces pulverization, and alleviates agglomeration, leading to a high capacity.
CERAMICS INTERNATIONAL
(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)