Article
Materials Science, Multidisciplinary
Yibing Xie
Summary: The PANI/EACF designed as supercapacitor electrode shows superior capacitive performance in the electrochemical charge-discharge process, indicating promising energy storage application.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Chemistry, Physical
Shunrui Wang, Tao Feng, Yongan Chen, Gang Liu
Summary: In this study, well-mixed PANI/nanomaterials composites were fabricated through solid-phase exfoliation and subsequent in-situ polymerization. The resulted nanocomposites exhibited enhanced electrochemical properties, excellent cycle stability, and high specific energy in a coin-type symmetric supercapacitor.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Zhenjie Cheng, Chenggang Wang, Yansong Zhu, Cheng Wang, Xiaolei Jiang, Zhao Qian, Bo Chen, Jian Yang
Summary: Dual-ion batteries with graphite cathode and Li4Ti5O12 anode have a high output voltage and can address the low energy density issue of Li-ion batteries. In this study, MCMB@LiFePO4||Li4Ti5O12 dual-ion batteries are developed to improve the electrochemical performance. The MCMB enhances the conductivity of LiFePO4 and increases the output voltage while the LiFePO4 shell maintains the structural integrity and generates a cathode-electrolyte interphase (CEI) with rich LiF. The MCMB@LiFePO4||Li4Ti5O12 battery exhibits better performance compared to other configurations, sustaining 89.6% of initial capacity after 1200 cycles and achieving a specific energy of up to 128 Wh kg(-1) at 179 W kg(-1).
Article
Chemistry, Physical
Anjana Anandan Vannathan, Tatinaidu Kella, Debaprasad Shee, Sib Sankar Mal
Summary: Polyaniline (PANI) and carbonaceous materials and metallic compounds are important in energy storage and conversion devices. PANI has shown potential in supercapacitors due to its high specific capacitance, flexibility, and affordability. Incorporating polyoxometalates (POMs) into the conducting polymer matrix enhances electrode material stability. The PANI-PV4W8 composite exhibited excellent capacitance at 0.5 M H2SO4 electrolyte solution with a specific capacitance of 584 F g(-1). It also showed high energy and power density, as well as good capacity retention after 4500 cycles.
Article
Chemistry, Multidisciplinary
Farkhod Azimov, Jihee Kim, Seong Min Choi, Hyun Min Jung
Summary: In this study, the limited performance of alpha-Fe2O3 was greatly improved by optimizing the nanotube structure and combining it with polyaniline. The prepared PANI@alpha-NT-a composite exhibited excellent stability in cycling life and capacitance retention, suggesting the incorporation of conducting polymers through well-controlled nanostructures as a solution to improve the limitations of alpha-Fe2O3 electrode materials.
Article
Engineering, Environmental
Nikolaos Kostoglou, Christian Koczwara, Sebastian Stock, Christos Tampaxis, Georgia Charalambopoulou, Theodore Steriotis, Oskar Paris, Claus Rebholz, Christian Mitterer
Summary: The study investigates the potential applications of a nanoporous polymer-/polyaniline-derived activated carbon (PDAC) in hydrogen storage and supercapacitor energy storage. The PDAC demonstrates superior hydrogen adsorption performance and supercapacitor cell performance compared to conventional commercial activated carbon, attributed to the smaller pore sizes of the PDAC structure.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Polymer Science
Juan Huang, Kejia Wu, Hui Bai, Huabo Huang, Xiaoqing Zhang, Yanbo Liu, Chuanxi Xiong
Summary: The study constructed PANI/MnO2 composite material by adding manganese sulfate, which showed higher specific capacitance than bare PANI and demonstrated superior charge transfer behavior. In kinetic analysis, both capacitive and diffusion-controlled behaviors were found to contribute to the electrochemical performance.
Article
Chemistry, Physical
Jin-Xia Wang, Yun-Peng Zhang, Yuan Guo, Ming-Wei Li, Cheng-Yang Wang
Summary: MCMBs as anode materials for sodium-ion batteries exhibit wider interlayer spacing and higher cycling efficiency, attributed to their unique structure and sodium storage mainly by intercalation mechanism.
Article
Polymer Science
Gyan Singh, Yogesh Kumar, Samina Husain
Summary: The research successfully employed polyaniline (PANI) chains doped with a very small amount of Activated Carbon (AC) as an electrode material in aqueous H2SO4 electrolyte to enhance the capacitive properties. By incorporating minute amount of AC as a dopant, there was a significant improvement in the overall specific capacitance of PANI. This approach has the potential to be a promising electrode material for next generation symmetric supercapacitors due to its high specific capacitance, low-cost and ease of synthesis.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Article
Chemistry, Physical
Wen Long Liu, Yong Qiang Guo, Tao Lin, Hong Chao Peng, Ya Ping Yu, Fan Yang, Sheng Chen
Summary: A hierarchical MXene@PANI-ACC electrode was fabricated to address the self-stacking issue of MXene nanosheets during electrode preparation. The electrode exhibited excellent electrochemical performance and showed great promise for high-performance energy storage devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Surya Suma Kuttan, Nimisha Girija, Sudha Janardhanan Devaki, Balagopal N. Nair, Rajan Jose, Narasimman Rajaram, A. Peer Mohamed, Unnikrishnan Nair Saraswathy Hareesh
Summary: The MoS(2-)PANI nanocomposite with enhanced crystallinity was synthesized through the growth of polyaniline fibers on MoS2 sheets, resulting in improved conductivity and pseudocapacitance. The optimized MoS2 decorated PANI nanosheets exhibited high capacitance and energy density in supercapacitors.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Hui Xu, Ji Ma, Yuan-qiang Zhu, Xu-dong Jiang, Yong Chen
Summary: In this study, conductive carbon cloth was used as a substrate to synthesize polyaniline with improved pseudo-capacitance through Mn2+ doping. The assembled flexible supercapacitor showed excellent electrochemical performance and application potential with an optimized gel electrolyte.
Article
Chemistry, Multidisciplinary
Meruyert Nazhipkyzy, Mukhtar Yeleuov, Shynggyskhan T. Sultakhan, Anar B. Maltay, Aizhan A. Zhaparova, Dana D. Assylkhanova, Renata R. Nemkayeva
Summary: Activated carbons are widely used in supercapacitors due to their processing advantages, conductivity, and porosity. This study found that activated carbon made from sawdust showed high specific capacitance in charge-discharge tests, even at high scan rates.
Article
Polymer Science
Syed Shaheen Shah, Himadri Tanaya Das, Hasi Rani Barai, Md. Abdul Aziz
Summary: This article discusses the research on developing environmentally friendly energy storage devices using biomaterials. The study shows that by depositing conductive polymers and activated carbon in a rational manner, the energy storage capacity and stability of supercapacitors can be improved.
Article
Engineering, Chemical
Bozhen Wu, Yuhao Yang, Mingpei Li, Kaiqi Zhu, Zoya Iqbal, Yulin Li
Summary: In this study, composite samples were fabricated through melt blending with MCMBs and PA66, achieving high thermal conductivity and improved mechanical properties and heat resistance. The formation of a heat transfer network at high filler content was the main reason for the enhanced performance.
POLYMER ENGINEERING AND SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Xi Zhou, Peng Zeng, Hao Yu, Changmeng Guo, Changqing Miao, Xiaowei Guo, Manfang Chen, Xianyou Wang
Summary: The study introduced double transition metal oxide TiNb2O7 (TNO) nanoparticles on activated carbon cloth (ACC) to enhance the catalytic effect on sulfur conversion reaction. This novel flexible self-supporting structure not only improved the redox reaction kinetics of sulfur but also effectively inhibited the shuttle effect of lithium polysulfides (LiPSs), showing impressive electrochemical performance at high discharge rates.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Changfei Zou, Li Yang, Kaili Luo, Lei Liu, Xiyuan Tao, Lingguang Yi, Xianhu Liu, Zhigao Luo, Xianyou Wang
Summary: By utilizing composite polymer electrolytes as the interface, the interfacial impedance and rapid growth of lithium dendrites between sulfide solid electrolyte and lithium metal in solid-state lithium metal batteries can be effectively reduced, enhancing the stability of battery performance. This cell structure design based on interface modification provides good prospects for the commercial application of all-solid-state lithium metal batteries.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Shuang Cao, Jiarui Chen, Heng Li, Zhi Li, Changmeng Guo, Gairong Chen, Xiaowei Guo, Xianyou Wang
Summary: Li1.17Na0.02Mn0.54Ni0.13Co0.13O2 (PN-LMNCO) is prepared through surface phase structure controlling and ion doping to address the rapid capacity fading and voltage decay issues of Li-rich Mn-based cathode materials. The introduction of lithium deficiencies induces surface phase transformation and forms an in-situ spinel surface conversion film, effectively inhibiting structure degradation during charge/discharge. Additionally, sodium doping increases spacing between Li layers, improving the rate capacity. The PN-LMNCO exhibits high initial coulombic efficiency (91.2%), retains 94.7% discharge specific capacity after 200 cycles, and maintains good discharge capacity (214 mA h g(-1)) at a high current rate of 5 C. This work is important for the development of high-energy density lithium-ion batteries for electric vehicles.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Wenlong Xia, Mingyu Han, Yufang Chen, Ying Zhou, Hongbo Shu, Yan Chen, Jincang Su, Xianyou Wang
Summary: To improve the electrochemical properties of lithium-sulfur batteries, this study proposes a rational strategy of tuning the d-band of catalysts through the introduction of Fe into in situ grown Ni2P on rGO, resulting in NiFeP/rGO composites. The incorporation of Fe improves the metallic conduction of Ni2P and elevates the d-band center of NiFeP, effectively facilitating charge transfer and weakening the S-S bonds of polysulfides. As a functional interlayer, NiFeP/rGO composites not only promote the interaction between polysulfides and NiFeP but also accelerate the conversion of polysulfides. The high-efficiency NiFeP/rGO electrocatalyst demonstrates the availability of the d-band regulating strategy for lithium-sulfur batteries, providing insights into the redox reaction of LiPSs at the molecular or atom level.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Engineering, Environmental
Hui Li, Jiao Peng, Zhenyu Wu, Xiaolin Liu, Peng Liu, Baobao Chang, Xianyou Wang
Summary: A hierarchical SiOx-based anode with double-layer coatings of Sn inner layer and N-doped carbon outer shell was designed to address the limitations of SiOx-based anode materials. The SiOx/C@Sn@NC anode exhibits enhanced initial Coulomb efficiency, higher reversible capacity, and superior long lifespan. The unique double-layer coating structure and multiple active components contribute to the improved electrochemical properties.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Heng Li, Shuang Cao, Zhi Li, Chao Wu, Jiarui Chen, Xiaowei Guo, Baobao Chang, Xianyou Wang
Summary: Oxygen-anion charge compensation enables lithium-rich manganese-based cathode materials to have higher specific capacity, but it also leads to irreversible oxygen redox and various problems. In this study, an interfacial engineering with sodium hypophosphite is used to modify the cathode material and improve its electrochemical performance. The modification strategy based on the formation of a Li3PO4 protective layer and the generation of oxygen vacancies effectively promotes the kinetic properties of the cathode material.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Xiyuan Tao, Li Yang, Jiali Liu, Zihao Zang, Peng Zeng, Changfei Zou, Lingguang Yi, Xiaoyi Chen, Xiaolin Liu, Xianyou Wang
Summary: Garnet-type Li7La3Zr2O12 (LLZO) is a solid-state electrolyte with high Li+ conductivity and stability. Ga-LLZO, in particular, achieves high ionic conductivity and can be prepared using a rapid ultra-high-temperature sintering method. The Ga-LLZO ceramic electrolyte exhibits high relative density, good ionic conductivity, and excellent electrochemical stability and interfacial compatibility against Li metal.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Juan Yang, Jiao Peng, Yu Lei, Junqing Zeng, Guang Li, Yongqiang Shen, Baobao Chang, Liping Zheng, Xianyou Wang
Summary: A solvent-free mechanochemical method was used to prepare a calcium carbide-derived porous carbon (CCDPC) composite with polyaniline (PANI). The CCDPC/PANI composite showed a significantly improved specific capacitance and energy density compared to pure CCDPC, as well as good capacitance retention after cycling tests. This study provides important insights for enhancing the electrochemical performance of high-performance supercapacitors.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Changfei Zou, Zihao Zang, Xiyuan Tao, Lingguang Yi, Xiaoyi Chen, Xiaoyan Zhang, Li Yang, Xianhu Liu, Xianyou Wang
Summary: In this study, a thin layer of Li1.3Al0.3Ti1.7(PO4)(3) was used as an interface coating in lithium-ion batteries to improve the stability between the cathode and solid-state electrolyte. The nanoscale coating not only enhances lithium ion transport but also alleviates interfacial problems, leading to better capacity retention.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Jiarui Chen, Shuang Cao, Zhi Li, Heng Li, Changmeng Guo, Ruijuan Wang, Lei Wu, Yixu Zhang, Yansong Bai, Xianyou Wang
Summary: In this study, homogeneous Li2ZrO3 (LZO) was successfully coated on the surface of Li1.2Mn0.54Ni0.13Co0.13O2 (LRO) by molten salt-assisted sintering technology. The as-prepared LRO@LZO composites have improved cycling performance due to the good chemical and electrochemical stability of LZO. Additionally, Li2ZrO3 acts as an excellent lithium-ion conductor, leading to increased lithium-ion transfer rate and improved rate capacity of LRO. Therefore, this study provides a new solution to enhance the structure stability and electrochemical performance of lithium-rich manganese-based cathode materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Xi Zhou, Xuelin Huang, Guang Li, Peng Zeng, Xiaolin Liu, Hong Liu, Manfang Chen, Xianyou Wang
Summary: A novel metal-organic framework (MOF) derivative called ZnCoFe-NC was designed and synthesized as a sulfur host for Li-S batteries. Its special hollow polyhedral structure provides physical trapping ability and chemisorption space for lithium polysulfides (LiPSs). The Zn, Co, Fe, and N doping not only have excellent chemisorption ability, but also high electrocatalytic activity, which accelerates the transformation of LiPSs and reduces their dissolution, improving the performance of Li-S batteries significantly.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Yu Lei, Guang Li, Juan Yang, Feng Zhang, Yongqiang Shen, Xiaoyan Zhang, Xianyou Wang
Summary: As a promising alternative to lithium-ion batteries, zinc-air batteries are recognized as a novel type of clean and environmentally friendlyenergy storage and conversion technology. In this study, a high-efficiency and cheap ORR catalyst, Fe3O4/Fe-N (x) dual catalytic active center (Fe-N-CS), was designed and prepared to overcome the limitation of low current density and large electrode polarization in the air cathode. The Fe-N-CS exhibited excellent ORR performance, surpassing Pt/C catalysts in terms of half-wave potential, onset potential, and stability.
Article
Chemistry, Physical
Heng Li, Zhi Li, Jiali Liu, Shuang Cao, Jiarui Chen, Hui Hu, Changmeng Guo, Xiaoyan Zhang, Xianyou Wang
Summary: The treatment of ammonium niobium oxalate can effectively improve the electrochemical performance of Co-free Li-rich layered oxides by creating oxygen vacancies and doping Nb5+ on the surface, leading to enhanced cycling stability and rate performance.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Electrochemistry
Guang Li, Kuang Sheng, Yu Lei, Feng Zhang, Juan Yang, Tianjing Wu, Liping Zheng, Xianyou Wang
Summary: Transition metal sulfides are considered as candidate oxygen redox catalysts due to their high catalytic activity and reversible redox performance. This study successfully synthesized Co9S8-FeCoS2 two-phase nanoparticles anchored in carbon spheres, which exhibited excellent catalytic performance and stability. This work provides an important approach to prepare highly efficient and stable dual-transition metal sulfide-modified carbon-based catalysts for oxygen reduction and oxygen evolution reactions.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Piaopiao Wen, Huangkai Wang, Xianyou Wang, Haibo Wang, Yansong Bai, Zhenhua Yang
Summary: This study proposes an effective method to enhance the Li-ion diffusion dynamics of two-dimensional layered niobium disulfide through palladium doping, leading to the development of an ultrahigh-rate and long-life anode material for Li-ion batteries.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
