Article
Energy & Fuels
Zhiguo Nie, Ye Wang, Xinyi Li, Rui Wang, Yang Zhao, Hua Song, Huan Wang
Summary: A series of nitrogen-doped hierarchical porous carbon materials were prepared by hydrothermal pretreatment and carbonization with ZnCl2 as the activator. The N2PC5 electrode showed optimal supercapacitor performance, with a specific capacitance of 321.5 F g(-1) at 0.5 A g(-1) and a capacitance retention ratio of 93% after 10,000 charge-discharge cycles, indicating the significance of developing low-cost, high-performance supercapacitors through a simple and effective preparation route.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Materials Science, Multidisciplinary
Tiantian Yu, Fumin Wang, Xubin Zhang, Guojun Lv, Huihui Lv, Jiawei Wang, Yi Zhai, Mingzhao Li
Summary: This study utilized Typha orientalis leaves to prepare P-doped hierarchical porous carbon material, which was used as the negative electrode for a supercapacitor and also as a support for growing MnO2 as the positive electrode. The assembled asymmetric supercapacitor device exhibited high specific capacitance and energy density.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Chemistry, Analytical
Huan Liu, Xiuli Huang, Menglei Zhou, Jianping Gu, Maodong Xu, Lu Jiang, Maoqing Zheng, Shi Li, Zongcheng Miao
Summary: In order to achieve the double carbon goals, the conversion of biomass waste into high value-added energy products is crucial. In this study, a N/O co-doped 3D hierarchical porous carbon was fabricated from orange peels via an efficient KOH-assisted protocol for supercapacitor application. The resulting carbon material exhibited a hierarchical architecture with interconnected multiscale vacancies and optimized pore size distribution, as well as a beneficial co-doping of N and O heteroatoms. This led to excellent performance as a supercapacitor electrode, with high specific capacitance, attractive rate capability, and superior cycling stability.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Energy & Fuels
Hongying Quan, Wenhao Tao, Yan Wang, Dezhi Chen
Summary: This study reports a facile strategy to improve the capacitive behavior of biomass-derived porous carbons by introducing highly graphitized carbon quantum dots (CQDs) into their structure. The resulting CQDs/HPC composites exhibit a well-developed porous structure, improved charge/ion transfer kinetics, and high capacitance and rate capability. Moreover, these composites also show high long-term stability.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Rui Wang, Xinyi Li, Zhiguo Nie, Qian Jing, Yang Zhao, Hua Song, Huan Wang
Summary: A hierarchical porous carbon material was synthesized using cornstalk as the precursor, and Ag nanoparticles were then decorated on the carbon material. The composite material exhibited improved specific capacitance and cyclic stability, making it a promising electrode material for supercapacitors.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Thibeorchews Prasankumar, Devashish Salpekar, Sohini Bhattacharyya, Kaaviah Manoharan, Ram Manohar Yadav, Kristen A. Miller, Robert Vajtai, Sujin Jose, Soumyabrata Roy, Pulickel M. Ajayan
Summary: In this study, high surface area porous carbons derived from sustainable biomass wastes were prepared and showed excellent performance in energy storage and gas sorption applications. The activated porous carbon derived from Tasmanian Blue Gum tree bark exhibited a hierarchically connected mesoporous structure with a large surface area and showed remarkable electrochemical storage capacity and CO2 capture performance. This work provides a simple and feasible strategy for converting waste biomass into value-added activated carbon.
Article
Chemistry, Physical
Liping Feng, Mingju Wang, Yunzhen Chang, Hua Song, Wenjing Hou, Ying Zhang, Yaoming Xiao, Sheng Zhu, Gaoyi Han
Summary: A facile strategy of polymerization-pyrolysis was reported to construct hierarchical nitrogen-doped porous carbon with rich surface nitrogen species. The hierarchical carbon exhibits a large specific surface area and multi-scale porous structures, leading to high specific capacitance and desirable supercapacitor performance.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Energy & Fuels
Arthi Gopalakrishnan, Sushmee Badhulika
Summary: The study presents the synthesis of N, S, P-self-doped porous and wrinkled graphene-like carbon nanosheets from waste onion skin, exhibiting excellent supercapacitor performance with high specific capacitance and good rate capability. The symmetric supercapacitor device assembled using these materials shows outstanding specific energy and cyclic stability, indicating great potential for renewable and sustainable energy storage devices.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Green & Sustainable Science & Technology
Jianhua Yu, Xu Li, Zhenxing Cui, Di Chen, Xiancai Pang, Qian Zhang, Feifei Shao, Hongzhou Dong, Liyan Yu, Lifeng Dong
Summary: The hydrothermal process effectively stabilizes heteroatoms (N and P), improves graphitization, and enhances the capacitive properties of biomass-derived carbon materials.
Article
Energy & Fuels
Ruijie Li, Zhipeng Shen, Haoyu Zheng, Lu Jin, Yonggang Zhang, Weiyong Yuan, Xuefei Wang
Summary: The translation describes the preparation and properties of nitrogen and oxygen co-doped porous carbon materials, which exhibit high mass-specific capacitance, excellent rate capability, cyclic stability, and high energy density. These porous carbon materials are crucial for energy storage and have potential applications in various fields.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Applied
Bing Wang, Yonggang Li, Zhijie Gu, Handong Wang, Xiaofeng Liu, Suping Li, Xiuxiu Chen, Xiaohui Liang, Zhaoxia Jiang, Kenji Ogino, Hongyu Si
Summary: Porous carbon systems doped with heteroatoms have potential for high energy density and power density. However, there is a lack of understanding of the relationship between heteroatom types and electrochemical properties, resulting in trial-and-error approaches for supercapacitor development. In this study, we synthesized biomass-derived carbon systems doped with N, S, and O atoms, which exhibited large specific surface areas and hierarchical porous structures. Our analysis of experimental evidence and theoretical simulations established doping principles for predictive electrochemical performance. The doped materials had broad operating voltage range (up to 1.8 V) in aqueous electrolytes and improved capacitive ions adsorption. They also demonstrated high energy density (25.2 Wh kg-1 at 180 W kg-1) and excellent cycling performance (97.6% capacity retention after 20,000 cycles). This work provides insights for designing advanced heteroatom-doped carbon electrodes.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Energy & Fuels
Li Li, Xian-Yong Wei, Chang-Wang Shao, Fan Yin, Bing-Kang Sun, Fang-Jing Liu, Jia-Hao Li, Zhong-Qiu Liu, Zhi-Min Zong
Summary: Hierarchical porous carbons (HPCs) with various porous structures were successfully prepared using soluble portions (SPs) from catalytic ethanolysis of Xinjiang low-rank coals. Among them, the HPC prepared from a soluble portion of light Runbei lignite (SPLRL) exhibited favorable electrochemical performance with high specific surface area, hierarchical pore volume, and nitrogen/oxygen doping. It showed promising capacitance and cycle stability as a supercapacitor electrode.
Article
Chemistry, Physical
Xiaoyun Zhang, Bingkang Sun, Xing Fan, Hongcun Bai, Peng Liang, Guoming Zhao, Binoy K. Saikia, Xianyong Wei
Summary: Carbon precursors were obtained from the co-thermal dissolution of coal and wheat straw in different weight ratios, leading to the preparation of three-dimensional hierarchical porous carbon (HPCX) materials. HPC1/3 exhibited excellent electrochemical performance, with the N and O-containing compounds contributing to capacity enhancement, surface polarity, and electrical conductivity, while aromatic compounds with high unsaturation contributed to high specific capacitance and cycling stability.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Rui Liu, Jing-Xuan Wang, Wein-Duo Yang
Summary: In this study, hierarchical porous activated carbon was prepared using coconut husk biomass waste as the carbon precursor, and its electrochemical properties were investigated. The carbonization process variables and the resulting powder properties were examined. The as-prepared activated carbon electrode exhibited pseudo-capacitive behavior and achieved a specific capacitance of 186 F g(-1) at 1 A g(-1). After 7000 cycles of charge-discharge testing, the initial capacitance retention rate was 95.6%. It is predicted that capacitor materials made from coconut shell will have better energy storage performance than traditional carbon supercapacitors.
Article
Energy & Fuels
Erman Taer, Apriwandi, Windasari, Rika Taslim, Mohamad Deraman
Summary: Biomass-based activated carbon with 2D nano-structure, 3D hierarchical porous, and self-/co-doping active heteroatoms has been proven to be an excellent sustainable electrode material for high-energy supercapacitors. This study aimed to obtain activated carbon with these features from Indonesian laurel aromatic evergreen biomass and optimize its structure through high-temperature pyrolysis. The prepared ILAE carbon material exhibited a 2D gauze-like nanosheet structure and a hierarchical pore network, leading to excellent electrochemical performance in symmetrical supercapacitors.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Environmental Sciences
Huan Liu, Chao Xu, Xueling Wei, Yiming Ren, Dingxing Tang, Cuige Zhang, Rongli Zhang, Fang Li, Chaofei Huo
WATER AIR AND SOIL POLLUTION
(2020)
Article
Chemistry, Multidisciplinary
Huan Liu, Chao Xu, Yiming Ren, Dingxing Tang, Cuige Zhang, Fang Li, Xueling Wei, Chaofei Huo, Xingyang Li, Rongli Zhang
Article
Chemistry, Multidisciplinary
Huan Liu, Wei Chen, Rongli Zhang, Yiming Ren
Summary: Utilizing lotus leaf stem as raw material, carbon materials fabricated with multiple advantages including high surface area, optimized pore size distribution, 3D hierarchical structure, nanosized graphitic structure, and natural heteroatom co-doping exhibit excellent performance in supercapacitors, showing high capacitance, superior rate capability, and outstanding recyclability.
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2021)
Article
Chemistry, Physical
Huan Liu, Wei Chen, Rongli Zhang, Chao Xu, Xiuli Huang, Hui Peng, Chaofei Huo, Maodong Xu, Zongcheng Miao
Summary: A high-quality graphene with structural hierarchy was successfully fabricated through a novel bioinspired method. The graphene possesses advantages for supercapacitor application, including large surface area, hierarchical porosity, well-organized graphene layers and favorable double doping of O/N, contributing to rapid charge transportation, fast diffusion of electrolyte ions, and high conductivity. This high-quality graphene prepared from biomass shows great potential for high-performance applications in energy storage and conversion.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Huan Liu, Wei Chen, Rongli Zhang, Maodong Xu, Minmin Weng, Xiuli Huang, Hui Peng, Zongcheng Miao, Chaofei Huo
Summary: The hierarchical porous graphene fabricated from lotus leaves using naturally occurring CaO as a catalyst demonstrates excellent performance as a high-rate supercapacitor electrode, showcasing rapid charge transfer, short ion diffusion pathway, and structural robustness. This environmentally friendly synthesis method takes advantage of the unique natural features of biomass, providing a new approach for the green and facile preparation of 3D graphene for energy storage applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Electrochemistry
Huan Liu, Wei Chen, Hui Peng, Xiuli Huang, Shi Li, Lu Jiang, Maoqing Zheng, Maodong Xu, Jiang Zhu
Summary: The N/O co-doped porous carbon derived from renewable carp scales shows fast electrochemical kinetics and abundant Zn2+ storage active sites, leading to high specific capacity and excellent performance as a potential cathode material for ZIHSCs. The hybrid structure of graphene base and nanoporous amorphous carbon, along with proper N/O co-doping, results in impressive energy and power outputs in the assembled ZIHSC.
ELECTROCHIMICA ACTA
(2022)
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)