Article
Chemistry, Physical
Ho Yun Jung, Seon Il Kim, JongHyun Kim, Yong Jae Kim, Hyeonaug Hong, JaeHyoung Yun, WonHyoung Ryu
Summary: The use of highly porous MnO2-decorated 3D-printed graphene electrodes can enhance the adhesion, extraction, and storage of photosynthetic electrons, resulting in a substantial increase in current density.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Nanoscience & Nanotechnology
Xiaojuan Tian, Xinyue Cheng, Shiqin Liao, Juanfen Chen, Pengfei Lv, Qufu Wei
Summary: Fiber-based supercapacitors (FSCs) have desirable flexibility and wearability, but their development in practical applications is hindered by low capacity and insufficient fiber strength. In this study, MnO2 nanomaterials with regulatable crystalline structure were synthesized, and MnO2/rGO hybrid fibers were successfully prepared, achieving improved electrochemical performance and fiber strength for FSCs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Chemistry, Physical
Yue Zhao, Huilian Hao, Tianliang Song, Xu Wang, Changwang Li, Wenyao Li
Summary: Supercapacitors have gained attention due to their long cycle stability, fast charge-discharge performance, and high-power density. This review summarizes the synthetic strategies and research progress of MnO2-graphene-based multi-element composites, including their combination with various carbon materials, transition metal oxides, and conducting polymers. The possible development directions of MnO2-graphene-based composite electrode materials in the future are also discussed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Tian Zou, Hao Ding, Cheng Qian, Xiaojuan Wang, Xiaoqin Li, Zebo Fang, Yan Xu, Yanyan Zhu
Summary: A three-dimensional graphene (3DG)-coated porous nanowire architecture was developed, which resulted in an airgel (3DG/CoSe(2)NWs) with abundant ion transport channels, high specific surface area, and excellent electrical conductivity. The airgel demonstrated a high specific capacity and rate capability, making it suitable for use as a flexible binder-free electrode. The asymmetric supercapacitor (3DG/CoSe(2)NWs//AC) exhibited excellent cycle stability and the flexible ASC device showed discharge stability, indicating its potential in practical applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Xiaoqin Ji, Delin Sun, Weihua Zou, Zhangheng Wang, Debin Sun
Summary: In this study, a lignin-based porous carbon material (PC-Ni/MnO2) co-doped with Ni and MnO2 was prepared and used in electrode materials for supercapacitors. The doping of Ni and MnO2 improved the capacitance characteristics, showing good rate performance and electrochemical stability. The biomass porous carbon has great practical application value in energy storage devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Chemical
Xiaoxi Dong, Jingyue Wang, Junfeng Miao, Bin Ren, Xing Wang, Lihui Zhang, Zhenfa Liu, Yuelong Xu
Summary: By moderately doping manganese ions in the PR-Fe lattice, the PR-Fe@MnO2 composite material exhibits excellent electrochemical properties, including high electrical conductivity, increased electroactive sites, reduced charge transfer resistance, high specific capacitance, and superior cycling stability.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Chemistry, Multidisciplinary
Rui Liu, Rui Jiang, Yu-Han Chu, Wein-Duo Yang
Summary: In the novel electrode fabrication method, graphene plays a crucial role as a buffer layer enhancing the conductivity of MnO2, leading to excellent electrochemical performance and long cycle life of the electrodes.
Article
Materials Science, Multidisciplinary
Gaini Zhang, Jianhua Zhang, Huijuan Yang, Xifei Li
Summary: The porous MnO2 nanosheets (P-MnO2) prepared through an in-situ redox reaction exhibit a high micro/mesoporous structure providing a large ion-accessible surface area for efficient charge storage. The designed nanopores facilitate electrolyte ions diffusion across the 2D MnO2 nanosheets, resulting in higher specific capacitance and desirable rate capability compared to pristine MnO2.
Article
Energy & Fuels
Juan Wang, Chang Xu, Dong Zhang, Peimin Zhan
Summary: We have developed a low-cost and highly efficient hybrid material composed of polymer modified Portland cement (PC) and graphene oxide (GO) for solid-state supercapacitors. The interconnected porous structure of the composite ensures high ionic conductivity and enables effective energy storage. The optimized PAA (Mw = 5000)/PC-5% sample exhibits excellent multifunctionality, with an energy density of 15.93 mW h cm-2 and a compressive strength of 16.2 MPa after 28 days of curing. This integrated solid-state supercapacitor, fabricated using electrophoretic deposition of GO on Ni foam, demonstrates its significance in energy storage applications in the field of inorganic building materials.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Electrochemistry
Yunming Jia, Xiaying Jiang, Arsalan Ahmed, Lan Zhou, Qinguo Fan, Shao Jianzhong
Summary: A steerable method was utilized to generate core-shell alpha-MnO2/graphene fibers, exhibiting outstanding mechanical flexibility and advantageous performance in fiber-shaped supercapacitors. The high voluminal specific capacitance, cyclic stability, and energy density were achieved due to the porous network structures of the MnGFs. The microfluidic spinning strategy could potentially promote the progress of wearable electronic products by providing a new-style design method for efficient electrode materials.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Nanoscience & Nanotechnology
Boyang Hu, Xiaolin Liu, Aifeng Liu, Yanzhao Ren, Zengcai Guo, Jingbo Mu, Xiaoliang Zhang, Zhixiao Zhang, Xiaoyan Liu, Hongwei Che
Summary: The study presents a feasible approach to engineer hollow cobalt selenide-graphene nanocomposites with enhanced electrochemical performance for supercapacitors. The synthesized hollow CoSe2@rGO nanocomposites demonstrate high specific capacity, excellent cyclic stability, and great potential for practical applications in asymmetric supercapacitor cells.
ACS APPLIED NANO MATERIALS
(2021)
Article
Polymer Science
Qianlan Ke, Yan Liu, Ruifang Xiang, Yuhui Zhang, Minzhi Du, Zhongxiu Li, Yi Wei, Kun Zhang
Summary: This study presents a novel strategy to fabricate nitrogen-doped porous core-sheath graphene fibers, aiming to enhance the utilization of graphene layers in fiber electrodes by introducing nitrogen doping and small-sized graphene sheets. The resulting nitrogen-doped core-sheath graphene-based fibers exhibit significantly improved electrochemical performance.
Article
Chemistry, Physical
Xinzhi Sun, Xiaojuan Liu, Xinru Xing, Feng Li
Summary: The study demonstrated a two-step method to prepare integrated electrode materials for supercapacitors, leading to the successful fabrication of a device with high areal capacitance, energy density, and power density.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
TaeGyeong Lim, TaeYoung Kim, Ji Won Suk
Summary: In this study, a porous Cu mesh was utilized as a current collector to investigate its morphological effect on supercapacitor performance. The porous surface was achieved through thermal annealing with ammonia gas. Hierarchically porous activated graphene (AG) was deposited on the P-Cu mesh, resulting in high specific capacitance and energy density due to efficient electric double-layer formation and charge transport. This work presents an alternative approach to enhance supercapacitors by combining a porous metallic current collector with porous AG.
Article
Chemistry, Physical
Botayna Bounor, Jensheer Shamsudeen Seenath, Sai Gourang Patnaik, David Bourrier, Chau Cam Hoang Tran, Jerome Esvan, Laurent Weingarten, Armel Descamps-Mandine, Dominic Rochefort, Daniel Guay, David Pech
Summary: Three-dimensional micro-supercapacitors based on highly porous Ni/MnO2 scaffolds are cost-effective and industrially feasible. These low-price electrodes demonstrate huge capacitance and excellent cycling stability, and can achieve extended cell voltages and high power using innovative Na-based ionogel electrolytes.
ENERGY STORAGE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jinglun Chen, Zhenfu Xu, Huiling Zhu, Rui Liu, Xiaojie Song, Qiang Song, Jie Wu, Chunzhi Zhang, Lei Ding, Jiangli Dong, Hongzhi Cui
Article
Electrochemistry
Ziteng Liang, Rui Liu, Yuxuan Xiang, Jianping Zhu, Xiangsi Liu, Gregorio F. Ortiz, Yong Yang
ELECTROCHIMICA ACTA
(2020)
Article
Materials Science, Multidisciplinary
Hao Zheng, Huiling Zhu, Meng Zhang, Mengmeng Zhang, Rui Liu, Xiaojie Song, Jie Wu, Chunzhi Zhang, Qiang Song, Hongzhi Cui
Article
Materials Science, Ceramics
Weikang Yan, Jianqiang Bi, Weili Wang, Zheng Xing, Rui Liu, Xuxia Hao, Xicheng Gao, Mingzhe Leng
Summary: Core-shell hierarchical structured composites, particularly those with rationally structural components and controllable morphology, have shown great advantages in enhancing electrochemical properties for energy storage devices. In this study, MnO2@NiCo2O4@Ti3SiC2/CC core-shell hierarchical structured composites were successfully synthesized and demonstrated improved specific capacitance and cycling stability. These composites have the potential to be used as electrode materials with exceptional electrochemical properties for supercapacitors, with high energy density and superior cycling stability.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Rui Liu, Shiyao Zheng, Yifei Yuan, Pengfei Yu, Ziteng Liang, Weimin Zhao, Reza Shahbazian-Yassar, Jianxu Ding, Jun Lu, Yong Yang
Summary: This study found that the cycling stability of NVCP sodium-ion batteries is enhanced at low temperatures, due to the detrimental effect of vanadium migration on the host structure; Suppressing transition metal migration by fixing vanadium atoms in place effectively, a room temperature-based deep sodiation strategy was developed to restore the structure.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Le Gong, Rong Yang, Rui Liu, Yiming Zou, Ying Liu, Liping Chen, Yinglin Yan, Yunhua Xu
Summary: In this work, graphene quantum dots/sulfur composite was prepared as cathode material for Li-S batteries using a feasible chemical method. The superior performance of the composite is attributed to the multiple polar functional groups in graphene quantum dots and the unique dendritic interlaced framework. This study provides a new strategy for cathode material design in Li-S batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Saul Rubio, Ziteng Liang, Xiangsi Liu, Pedro Lavela, Jose L. Tirado, Radostina Stoyanova, Ekaterina Zhecheva, Rui Liu, Wenhua Zuo, Yong Yang, Carlos Perez-Vicente, Gregorio F. Ortiz
Summary: This study presents a new magnesium battery cathode with high reversible capacity and multi-electron storage capability. The research provides an effective strategy for designing high-energy rechargeable magnesium batteries with multi-electron storage, but efforts are needed to overcome high polarization during charge-discharge cycles.
ENERGY STORAGE MATERIALS
(2021)
Article
Electrochemistry
Saul Rubio, Ziteng Liang, Yixiao Li, Wenhua Zuo, Pedro Lavela, Jose L. Tirado, Rui Liu, Ke Zhou, Jianping Zhu, Bizhu Zheng, Xiangsi Liu, Yong Yang, Gregorio F. Ortiz
Summary: This study focuses on improving the electrochemical performance of MgMnSiO4 as a cathode material for rechargeable magnesium batteries, by adopting an unconventional approach of adding water to enhance the interaction between materials in the battery. The results demonstrate that water addition can improve the performance stability of the battery.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Mengmeng Zhang, Hao Zheng, Huiling Zhu, Meng Zhang, Rui Liu, Xuesong Zhu, Xinbo Li, Hongzhi Cui
Summary: Cu-doped NiCo2S4/flake graphite composite with a three-dimensional structure was prepared, exhibiting excellent specific capacitance, capacitance retention rate, energy density, and cycling stability. It shows great potential for the development of high-performance energy storage devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Meng Zhang, Ruxin Zang, Mengmeng Zhang, Rui Liu, Xuesong Zhu, Xinbo Li, Hongzhi Cui, Huiling Zhu
Summary: A novel Ni(OH)(2)/ZnO hydrangea-like structure was prepared using a facile electrodeposition strategy, utilizing the advantages of both ZnO and Ni(OH)2, resulting in fast ion/electron transport and structural stability. This structure exhibited outstanding electrochemical performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Wei Zhu, Jingchao Zhang, Jiawei Luo, Cuihua Zeng, Hai Su, Jinfeng Zhang, Rui Liu, Enyuan Hu, Yuansheng Liu, Wei-Di Liu, Yanan Chen, Wenbin Hu, Yunhua Xu
Summary: A high-temperature shock (HTS) strategy is used for the ultrafast synthesis of cathode materials in seconds, with an ultrahigh heating rate leading to non-equilibrium reaction and fast reaction kinetics. This method avoids high energy and long time consumption, and has successfully synthesized mainstream cathode materials with good electrochemical performance.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Wengao Zhao, Lianfeng Zou, Haiping Jia, Jianming Zheng, Donghao Wang, Junhua Song, Chaoyu Hong, Rui Liu, Wu Xu, Yong Yang, Jie Xiao, Chongmin Wang, Ji-Guang Zhang
ACS APPLIED ENERGY MATERIALS
(2020)
Article
Chemistry, Physical
Chaoyu Hong, Qianyi Leng, Jianping Zhu, Shiyao Zheng, Huajin He, Yixiao Li, Rui Liu, Jiajia Wan, Yong Yang
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Chemistry, Physical
Mingzeng Luo, Shiyao Zheng, Jue Wu, Ke Zhou, Wenhua Zuo, Min Feng, Huajin He, Rui Liu, Jianping Zhu, Gang Zhao, Shijian Chen, Wanli Yang, Zhangquan Peng, Qihui Wu, Yong Yang
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Materials Science, Multidisciplinary
Ping Zhang, Xiujie Yue, Yeran Gao, Zhenyong Lin, Shunxiang Wang, Songting Zhang
Summary: This paper investigates the strengthening mechanism of highspeed cutting and solid particle-entrained waterjet peening (HSC-WJP) composite reinforcement on 7075-T6 aluminum alloy. The research results show that composite reinforcement can improve surface quality, reduce surface pits and roughness, and decrease the size of precipitation-free zone (PFZ) at grain boundaries.
Article
Materials Science, Multidisciplinary
Sangyoon Lee, Hwi Yoon, Sanghun Lee, Seung-min Chung, Hyungjun Kim
Summary: The wettability of metal oxides, particularly HfO2 thin films deposited via atomic layer deposition, and its correlation with surface free energy have been studied. It was found that surface oxygen species significantly affect the intrinsic hydrophilicity of HfO2 thin films, and the crystalline orientations also evolve with film thickness.
Article
Materials Science, Multidisciplinary
Changdong Yin, Yiwen Wu, Zhou Xu, Dongdong Ye, Jun Yao, Jianjun Chen, Qiang Liu, Xin Ge, Meiling Ding
Summary: This study proposed a new strategy to indirectly estimate the hydrogen diffusivity of metallic materials under tensile stress by combining the electrochemical hydrogen permeation test (EHPT), the hydrogen diffusion descriptive equation based on Fick's law, and hydrogen pre-charged tensile test. The results showed that the hydrogen permeation curve obtained was highly approximate to the theoretical trend. The hydrogen embrittlement (HE) susceptibility of the specimens increased with increasing stress.
Article
Materials Science, Multidisciplinary
Huan Luo, Wei-yi Wang, Xin Yu, Xian-jun Lei, Lang Liu, Guo-zheng Zha, Wen-long Jiang, Bin Yang, Bao-qiang Xu
Summary: Separating selenium and tellurium is a general challenge in material and non-ferrous metallurgical industries. This paper proposes a novel method that achieved efficient separation of selenium and tellurium using gas-liquid equilibrium phase diagram and valence regulation-vacuum gasification technique.
Article
Materials Science, Multidisciplinary
Fan Zhang, Rong Xin Wang, Aiqin Tian, Fangzhi Li, Jianping Liu, Hui Yang
Summary: Deposition of Pd/Pt/Au three-layer films on p-GaN under high and ultra-high vacuum conditions was studied to investigate the electrical contact properties. Linear I-V curves were observed in samples deposited under ultra-high vacuum conditions, while nonlinear I-V characteristics were obtained in samples deposited under high vacuum conditions. The study also found that the samples deposited under high vacuum conditions had higher amounts of oxygen and Pd oxide. The oxide layer had an additional influence on the electrical characteristics of the Pd/Pt/Au/p-GaN contact.
Article
Materials Science, Multidisciplinary
Hongli Liu, Chengzhe Liu, Ying Sui, Zhongxian Liu, Tiangang Zhang, Zhiqiang Zhang, Shuang Sun, Jianwei Jia
Summary: This study utilized polysiloxane and hafnium carbide to produce Si-N-C-O-Hf hybridized ceramic fibers, and obtained ceramic fibers with hemispherical particles on the surface through electrostatic spinning and pyrolysis. The ceramic fibers exhibited excellent thermal stability, oxidation resistance, and high temperature insulation.
Article
Materials Science, Multidisciplinary
M. Abaker, Nazar Elamin Ahmed, A. Saad, H. F. Khalil, E. M. M. Ibrahim, A. M. Adam
Summary: This paper systematically studied the internal structure and thermoelectric properties of In1-xGaxSb alloys prepared by melting synthesis at 1123 K. The results showed that doping with Ga in the In sites led to a significant increase in the Seebeck coefficient and power factor, while reducing the thermal conductivity. The maximum dimensionless figure of merit was observed at 403 K.
Article
Materials Science, Multidisciplinary
Fucheng Yu, Jinlong Ren, Jielin Zhang, Haiyang Chen, Xin Tian, Chenchen Feng, Cuixia Li, Jianbin Zhang, Xianxi Tang, Xiaogang Hou
Summary: An environmentally friendly ZnO@BiVO4 composite photocatalyst was prepared using in-situ self-assembly and solvothermal methods, demonstrating good photocatalytic performance. The mass ratio of BiVO4 and NCZ was found to influence the photocatalytic performance of the composite.
Article
Materials Science, Multidisciplinary
Yaoming Shao, Pingping Zheng, Tianhao Dong, Lianghuan Wei, Haifei Wu, Jianxiao Si
Summary: In this paper, Mg3Bi2 films were prepared on glass substrate using magnetron sputtering, and the phase composition and thermoelectric properties of the films were investigated with different atomic ratios. The films displayed a metastable cubic phase and high conductivity when the atomic ratio exceeded stoichiometry.
Article
Materials Science, Multidisciplinary
I. V. Uimanov, D. L. Shmelev, S. A. Barengolts
Summary: A two-dimensional axisymmetric model has been developed to study the prebreakdown processes in a cathode microprotrusion under an external electric field. The simulation results show that electrohydrodynamic instability leads to the formation of a nanometer-sized conical protrusion on the microprotrusion tip, significantly accelerating the heating process.
Article
Materials Science, Multidisciplinary
Weilun Zhang, Di Yang, Feng Gong, Yongjun Chen, Tian Chen, Zhiwen Xie, Sirui Yang
Summary: A novel Pt doping method was designed to improve the thermal stability of CrWN coating. The doping of Pt atoms effectively blocks the coherent growth of the grains and creates a significant mixing effect, resulting in a smooth surface with uniform element distribution.
Article
Materials Science, Multidisciplinary
Xiaoye Wang, Xiaoguang Yang, Wenna Du, Tao Yang
Summary: In this study, the effects of multiple growth parameters on self-catalyzed growth of InAs/GaSb axial heterostructured nanowires on Si substrate by MOCVD were investigated. It was found that the growth temperature and switching time have significant influences on the nanowire growth.
Article
Materials Science, Multidisciplinary
Weizhong Cui, Yan Zhao, Can Cui, Xing Liu, Beili Pang, Jianguang Feng, Hongzhou Dong, Liyan Yu, Lifeng Dong
Summary: This study introduces Co2+ cations into Cs2AgBiBr6 film to improve its quality, grain size, and conductivity, resulting in enhanced solar cell efficiency.
Article
Materials Science, Multidisciplinary
Jian Wang, Ke Yang, Xianming Cheng, Yalin Lu, Ganghui Wu, Yang Zhang, Yun Kan
Summary: The corrosion behavior and microstructural evolution of Sc microalloyed Al-3.2Cu-1.5Li alloys were investigated in detail. The microstructural results showed higher levels of dislocations density in the Sc microalloyed sample, which resulted in significantly refined grains and T1 precipitates. Microalloying with Sc changed the corrosion mode of the alloy and localized corrosion was found to occur preferentially at the subgrain within unrecrystallized grains with high grain stored energy.
Article
Materials Science, Multidisciplinary
Weifeng Liu, Na Liu, Kaiqiang Song, Meiqin Zeng, Zhongchen Lu
Summary: Monoclinic WO3 prepared through plasma milling exhibits higher photocatalytic activity due to its higher surface area, increased oxygen vacancies, and defects.