Article
Chemistry, Physical
Mongkol Tipplook, Gasidit Panomsuwan, Yukihiro Muta, Nagahiro Saito
Summary: A study demonstrated a one-step synthesis of amphiphilic functional group-modified carbon-supported platinum catalyst via liquid-phase plasma process, improving the efficiency and durability of PEMFCs. The research findings suggest that the number of hydrophilic and hydrophobic characters on the carbon surface plays a crucial role in the performance of PEMFCs.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Shuai Shi, Xianglong Wen, Qinqin Sang, Shuai Yin, Kaili Wang, Jian Zhang, Min Hu, Huiming Yin, Jia He, Yi Ding
Summary: Designing catalyst layers with high proton conductivity in membrane electrode assemblies is crucial for proton exchange membrane fuel cells. The use of an ultrathin Pt-decorated nanoporous gold catalyst layer has been shown to significantly improve proton conduction and achieve excellent power density in carbon-free electrodes.
Article
Biochemistry & Molecular Biology
Bing Li, Meng Xie, Kechuang Wan, Xiaolei Wang, Daijun Yang, Zhikun Liu, Tiankuo Chu, Pingwen Ming, Cunman Zhang
Summary: Graphitized black pearl (GBP) 2000 supported Pt nanoparticle catalysts were synthesized by a formic acid reduction method. The results showed that the Pt/GBP catalyst exhibited better stability and durability compared to commercial Pt/C in half-cell accelerated degradation test (ADT) and single-cell ADT. After a 1003-hour durability test, the Pt/GBP proton exchange membrane fuel cell (PEMFC) stack showed a low voltage degradation rate. Additionally, the structure and particle size of the Pt/GBP catalyst remained unchanged during the dynamic testing protocol, indicating its better stability.
Article
Biochemistry & Molecular Biology
Su-Jeong Bak, Sun- Kim, Su-yeong Lim, Taehyo Kim, Se-Hun Kwon, Duck Hyun Lee
Summary: The study demonstrated highly efficient oxygen reduction catalysts composed of uniform Pt nanoparticles on small, reduced graphene oxides (srGO). The catalysts exhibited efficient surface reactions, large surface areas, high metal dispersions, and excellent oxygen reduction performance. Detailed investigations suggested that the chemical functionality and electrical conductivity greatly influenced the enhanced oxygen reduction efficiency of the catalysts.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Physical
Yi Luo, Junzong Feng, Lukai Wang, Yonggang Jiang, Liangjun Li, Jian Feng
Summary: In this study, a high-surface-area nitrogen-doped graphitic nanocarbon (N-G-CA) was developed as a support material for the Pt-based catalyst in proton exchange membrane fuel cells (PEMFCs), showing superior durability and activity. This can be attributed to the high graphitization extent of N-G-CA and the interactions between doping nitrogen and Pt.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Zi-Gang Zhao, Pan Guo, Li-Xiao Shen, Yang-Yang Liu, Zi-Yu Zhang, Feng-Di Tu, Miao Ma, Xiao-Wei Liu, Yun-Long Zhang, Lei Zhao, Guang-Jie Shao, Zhen-Bo Wang
Summary: In this study, Pt-CeO2 composites supported by zeolitic imidazolate framework-8 (ZIF-8) derived nitrogen-doped carbon (NC) were demonstrated to have abundant triple-phase interfacial conjunction, leading to enhanced activity and durability for the oxygen reduction reaction.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Arindam Modak, Parthiban Velayudham, Tatyana Bendikov, Roopathy Mohan, Alex Schechter
Summary: Developing a novel approach, CeO2 nanoparticles were incorporated into a porous organic polymer followed by pyrolysis to form a mixed phase of ceria and CeCx incorporated in a conducting nitrogen-doped carbon matrix, which exhibited high porosity and specific capacitance. Pt nanoparticles impregnated onto the carbon matrix showed enhanced oxygen reduction reaction activity, and the composite catalyst demonstrated superior performance and durability in an acid electrolyte compared to commercial catalysts. This study suggests that Pt stabilized by cerium carbide-containing N-doped carbon could be a promising cathode catalyst for advanced energy research.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Xin Cai, Tong Zheng, Shiyang Hua, Rui Lin
Summary: In this paper, an efficient and simple method was used to prepare high-performance Pt-Co@Pt/C core-shell catalysts, which showed higher activity and better durability in fuel cells and have the potential for practical application.
JOURNAL OF POWER SOURCES
(2023)
Article
Energy & Fuels
Vi Thuy Thi Phan, Toan Minh Pham, Hau Quoc Pham, Tai Thien Huynh, Thi Hong Tham Nguyen, Van Thi Thanh Ho
Summary: This study focuses on the synthesis and application of a high-performance Pt3Co1/Ti0.9Ir0.1O2 catalyst for direct methanol fuel cells. By depositing Pt3Co1 alloy nanoparticles on a robust Ti0.9Ir0.1O2 support, the catalyst exhibits improved activity and poisoning tolerance, as well as lower cost and better stability compared to commercial Pt/C catalyst. The success of this work provides a foundation for further development of TiO2-based bimetallic catalysts in the electrochemical catalysis field.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Muhua Chen, Weizhen Wang, Yuping Qiu, He Wen, Guangyao Li, Zhiqing Yang, Ping Wang
Summary: This study experimentally identified the active sites in HCHO oxidation over TiO2-supported Pt catalysts and revealed the cooperative mechanism involved.
Article
Chemistry, Physical
Zuqiao Ou, Zhao An, Zhong Ma, Nan Li, Yinuo Han, Ganjun Yang, Qike Jiang, Qiang Chen, Wenling Chu, Suli Wang, Tongwen Yu, Weishen Yang
Summary: By encaging platinum single atoms and ultrafine nanoparticles into periodic nanopores of three-dimensional graphene-like architecture carbon, a cathode configuration with an ultralow platinum loading exhibits superior mass activity and stability, contributing to the cost reduction of proton-exchange membrane fuel cells.
Article
Chemistry, Physical
Fengman Sun, Haijun Liu, Ming Chen, Haijiang Wang
Summary: By chemically modifying Pt/C catalyst, we designed a high-oxygen mass-transfer Pt/ionomer interface. The modified membrane electrode assembly (MEA) showed higher voltage at high humidity and reduced oxygen transport resistance. Decreasing the Rionomer of Pt/ionomer interface is the key to improving oxygen transport.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Ye Peng, Ja-Yeon Choi, Liliang Tian, Kyoung Bai, Yi Zhang, Dongchu Chen, Jianhuang Zeng, Dustin Banham
Summary: The distribution of platinum group metal (PGM) nanoparticle catalysts in the carbon support significantly affects the catalyst's performance. The placement of Pt either on the outer surface or within the pores of the carbon results in different activity and performance at high current densities. To gain further insight into the catalyst's properties, a relationship between Pt distribution and relative humidity (RH) tolerance is explored. This work provides valuable information for MEA designers in selecting catalysts for specific applications.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Applied
Kirill A. Kurdin, Vitaly V. Kuznetsov, Vitaly V. Sinitsyn, Elena A. Galitskaya, Elena A. Filatova, Charles A. Belina, Keith J. Stevenson
Summary: Two simple synthetic procedures were developed for the synthesis of Pt-HxMoO3 composites, and the composition and structure of the catalysts were characterized using various physical methods. The prepared composites exhibited promising CO-tolerance, providing a potential method for the synthesis of CO-tolerant catalysts in practical fuel cells.
Article
Chemistry, Physical
Youngkwang Kim, Hyo Eun Bae, Dohyeon Lee, Jeongwoo Kim, Eunjik Lee, Songi Oh, Ji-Hoon Jang, Yong-Hun Cho, Mohanraju Karuppannan, Yung-Eun Sung, Taeho Lim, Oh Joong Kwon
Summary: In this study, a highly active and stable cathode nanocatalyst for proton exchange membrane fuel cells (PEMFCs) was developed via alloying and carbon layer protection, effectively utilizing platinum and overcoming stability issues caused by transition metals.
JOURNAL OF POWER SOURCES
(2022)
Article
Electrochemistry
Patrick Urchaga, Thomas Kadyk, Steven G. Rinaldo, Antonio O. Pistono, Jingwei Hu, Wendy Lee, Chris Richards, Michael H. Eikerling, Cynthia A. Rice
ELECTROCHIMICA ACTA
(2015)
Article
Electrochemistry
Cynthia A. Rice, Patrick Urchaga, Antonio O. Pistono, Bryce W. McFerrin, Benjamin T. McComb, Jingwei Hu
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2015)
Article
Chemistry, Physical
Robert W. Atkinson, Samuel St. John, Ondrej Dyck, Kinga A. Unocic, Raymond R. Unocic, Colten S. Burke, Joshua W. Cisco, Cynthia A. Rice, Thomas A. Zawodzinski, Alexander B. Papandrew
Article
Electrochemistry
S. Saeed, A. Pistono, J. Cisco, C. S. Burke, J. T. Clement, M. Mench, C. Rice
Article
Electrochemistry
Antonio Pistono, Cynthia A. Rice
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2017)
Article
Electrochemistry
Akshay S. Bauskar, Cynthia A. Rice
ELECTROCHIMICA ACTA
(2012)
Article
Electrochemistry
Akshay S. Bauskar, Cynthia A. Rice
ELECTROCHIMICA ACTA
(2013)
Article
Electrochemistry
Akshay S. Bauskar, Cynthia A. Rice
ELECTROCHIMICA ACTA
(2013)
Article
Chemistry, Physical
Steven G. Rinaldo, Patrick Urchaga, Jingwei Hu, Wendy Lee, Juergen Stumper, Cynthia Rice, Michael Eikerling
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2014)
Article
Chemistry, Physical
Cynthia A. Rice, Daniel Betancourt, Maria Hepel
Article
Electrochemistry
Antonio O. Pistono, Colten S. Burke, Joshua W. Cisco, Christopher Wilson, Bobby G. Adams, Cynthia A. Rice
ECS ELECTROCHEMISTRY LETTERS
(2014)
Article
Chemistry, Physical
Antonio O. Pistono, Cynthia A. Rice
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Biochemistry & Molecular Biology
Antonio O. Pistono, Cynthia A. Rice
Review
Electrochemistry
Cynthia Ann Rice
Summary: Subzero cold-starts remain a challenge to the commercialization of automotive fuel cells, with a disconnect between test results and industrially relevant cold-starts. Higher initial water content enhances cold-start performance, while convective mass/heat flux are necessary to avoid ice accumulation and overcome thermal mass in larger stacks.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(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)