Article
Nanoscience & Nanotechnology
Hao Wu, Lihua Zheng, Ning Du, Bowen Sun, Jie Ma, Yingying Jiang, Jiadong Gong, Huan Chen, Lianbang Wang
Summary: The rational design of compact graphite/Si/SiO2 ternary composites enhances packing density and leads to higher areal capacity compared to pure graphite. Introducing Si/SiO2 clusters into void spaces between graphite particles provides an effective strategy for implementing graphite-Si composite anodes in next-generation Li-ion cells.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Hae-Ri Yang, Junesun Hwang, Hyungeun Seo, Kyungbae Kim, Jae-Hun Kim
Summary: Researchers have proposed a composite material to overcome the initial Coulombic efficiency issue in silicon suboxides for lithium-ion batteries and achieved superior cycle performance. The composite material, synthesized through high-energy mechanical milling, showed excellent reversible capacity and cycle performance in electrochemical tests.
JOURNAL OF POWER SOURCES
(2022)
Article
Materials Science, Ceramics
Shuangze Yang, Zhimin Zou, Chunhai Jiang
Summary: Ternary MnO/MnTiO3@C composite anode materials are prepared by capturing TiO2 nanoparticles into MnO2 through a hydrothermal reaction, followed by resin coating and thermal treatment. The optimized composite anode shows enhanced cycling performance and stable capacity, making it a promising alternative to graphite for Li-ion batteries.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Ze Li, Yonghua Li, Huan Xie, Zhaoyang Zuo, Peng Chu
Summary: In this study, porous carbon @Fe2O3 composites with improved electrical conductivity and cycling stability were prepared by hydrothermal method, showing potential as anode materials for high performance Li-ion batteries.
Article
Chemistry, Multidisciplinary
Kangzhe Cao, Sitian Wang, Jiahui Ma, Xiaobing Xing, Xiaogang Liu, Yong Jiang, Yang Fan, Huiqiao Liu
Summary: The unique properties of the MnNb2O6 anode make it an attractive candidate for holding Li ions. However, its application as a Li-ion battery anode is hindered by low capacity due to poor electronic conductivity and limited electron transfer. This study explores the reasons behind capacity increments achieved through structure and component optimization. The researchers prepared MnNb2O6-C nanofibers with confined MnNb2O6 nanoparticles in carbon nanofibers, and compared them with MnNb2O6 nanofibers consisting of larger nanoparticles. Electrochemical evaluations showed that the MnNb2O6-C nanofibers delivered high reversible capacity and stable cycling performance. Further analysis revealed that the capacity increment was attributed to partial structure rearrangement, mainly including an increase in pseudocapacitance. This work suggests that reducing the dimensions of MnNb2O6 nanoparticles and confining them in a matrix can increase the pseudocapacitance-dominated capacity, offering a novel approach to improve the reversible capacity of MnNb2O6 and other intercalation reaction anodes.
Article
Chemistry, Physical
Yin Zhang, Baocong Tian, Qian Shi, KangKang Yao, Minwei Xu
Summary: Li-Mn-O spinels with a Li-gradient achieved by surface treatment exhibit good cycle stability and relatively high capacity.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Pin Song, Shiqiang Wei, Jun Di, Jun Du, Wenjie Xu, Daobin Liu, Changda Wang, Sicong Qiao, Yuyang Cao, Qilong Cui, Pengjun Zhang, Liaobo Ma, Jiewu Cui, Yan Wang, Yujie Xiong
Summary: Sodium-ion batteries (SIBs) are promising for large-scale energy storage due to abundant and cheap sodium resources, but developing anode materials with sufficient space for sodium ion intercalation remains challenging. This study presents hard carbon microtubes (HCTs) with tunable apertures derived from low-cost natural kapok fibers, which have a unique micro-nano structure, smaller surface area, and shorter Na+ diffusion path. The wall thickness of HCTs can be regulated and controlled by carbonization temperature, and HCTs carbonized at 1600 degrees C show the smallest wall thickness, leading to enhanced reversibility of Na+ storage. The 1600HCTs exhibit a high initial Coulombic efficiency, good cycling stability, and excellent rate capacity. This work not only provides a new approach for preparing hard carbon materials with suitable ion channels and novel tubular micro-nano structures, but also reveals the mechanism of hard carbon materials for sodium storage.
Article
Biochemistry & Molecular Biology
Yajing Yan, Yanxu Chen, Yongyan Li, Xiaoyu Wu, Chao Jin, Zhifeng Wang
Summary: In this study, a Si/Fe2O3-anchored rGO framework was successfully prepared as a LIB anode with outstanding electrochemical performance, including high reversible capacity and excellent cycling stability. The framework's high specific surface area and promotion of ions and electrons transmission contribute to its exceptional performance.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(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
Nanoscience & Nanotechnology
Feng Shao, Hong Li, Lu Yao, Shiwei Xu, Gang Li, Bin Li, Cheng Zou, Zhi Yang, Yanjie Su, Nantao Hu, Yafei Zhang
Summary: In this study, a flexible graphene-fiber-fabric-based three-dimensional conductive network was designed to create a binder-free and self-standing silicon anode, demonstrating excellent battery performance. The GFF/Si-37.5% and GFF/Si-29.1% electrodes exhibited outstanding performance in terms of cyclability and reversible capacity.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Energy & Fuels
Young-Han Lee, In-Su Hwang, Jeong-Hee Choi, Cheol-Min Park
Summary: The electrochemical Li/Na/K-ion reaction pathways in Ga for high-performance Ga anodes in alkali-ion batteries are thoroughly elucidated using ex situ analytical tools. Ga exhibits a high Li-ion storage reaction, forming Li2Ga, but poor Na- and K-ion storage reactions, forming NaGa4 and K3Ga13, respectively. An amorphous Ga composite (Ga/C) is fabricated, showing high reversible capacity, long-term Li-ion storage stability, and high rate capability. Three-step confinement of amorphous Ga in the composite during cycling is demonstrated as an enhancement mechanism for high-performance Ga/C anodes for LIBs.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Analytical
Wenjun Zhang, Xu Li, Yongzhong Jin, Ge Chen, Yuming Li, Shoujun Zeng
Summary: A Co3O4/helical carbon nanofibers (Co3O4/HCNFs) composite was successfully synthesized using a simple and inexpensive method, and it showed excellent cyclability and electrochemical performance as an anode material for lithium-ion batteries. The unique 3D helical structure of the HCNFs played a crucial role in accommodating the volume expansion of nano-Co3O4 during charge-discharge process and improving the conductivity of Co3O4.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Guoping Liu, Lei Zhang, Yucun Zhou, Luke Soule, Yangchang Mu, Wenwu Li, Zhicong Shi
Summary: Designing novel anode materials to improve the limited capacity and poor lithium-ion conductivity of lithium-ion batteries remains challenging. In this study, a higher crystal symmetric, cation-disordered zinc blende Zn0.5Ge0.5P anode material was developed with superior electron and lithium-ion transport compared to the parent allotrope chalcopyrite ZnGeP2. The proposed amorphization-conversion-alloying reaction mechanism provides suitable transport channels for fast diffusion of lithium ions during lithiation, leading to a high specific capacity and initial Coulombic efficiency. Additionally, a Zn0.5Ge0.5P-TiC-C composite exhibited promising performance with enhanced electronic conductivity and capacity retention after cycling.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Physical
Hugo S. Francon, Yunus C. Gorur, Celine Montanari, Per A. Larsson, Lars Wagberg
Summary: Cellulose nanofibers (CNFs) are bio-sourced nanomaterials that can be used as binders in the preparation of high-performance nanocomposites. This study found that modified cellulosic fibers performed better than conventional binders in terms of electrochemical and mechanical properties in the preparation of graphite anodes for Li-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Qiongyu Zhou, Qinghui Li, Songli Liu, Xin Yin, Bing Huang, Minqi Sheng
Summary: A high-performance flexible poly(ethylene oxide) (PEO)-based composite electrolyte has been developed to enhance the safety and stability of all-solid-state batteries.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Zi Yang, Zhimin Li, Tao Ning, Maolin Zhang, Yangxi Yan, Dongyan Zhang, Guozhong Cao
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Chemistry, Physical
Zhi Chen, Ming Zhang
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Chemistry, Multidisciplinary
Changmiao Chen, Yincai Yang, Xuan Tang, Renhua Qiu, Shuangyin Wang, Guozhong Cao, Ming Zhang
Article
Materials Science, Multidisciplinary
Zijian Zhu, Changmiao Chen, Mengqiu Cai, Yong Cai, Huanxin Ju, Shanwei Hu, Ming Zhang
MATERIALS RESEARCH BULLETIN
(2019)
Article
Nanoscience & Nanotechnology
Pengjie Jiang, Dou Tang, Changmiao Chen, Xiaohua Chen, Ming Zhang
Article
Chemistry, Multidisciplinary
Shuangshuang Ding, Bingxin Zhou, Changmiao Chen, Zhao Huang, Pengchao Li, Shuangyin Wang, Guozhong Cao, Ming Zhang
Article
Nanoscience & Nanotechnology
Zhao Huang, Shuangshuang Ding, Pengchao Li, Changmiao Chen, Ming Zhang
Summary: In this study, porous Sb-graphene-carbon nanofibers were fabricated as binder-free anode materials for KIBs, showing excellent cycle life and rate capability. The dispersed graphene offered enhanced tolerance to volume change and promoted electron transportation, while the extrinsic pseudocapacitance also boosted K(+) storage capacity in the battery system. These results may lead to new advancements in high-performance potassium-ion batteries.
Article
Materials Science, Multidisciplinary
Ting Fu, Peng-Chao Li, Hong-Cheng He, Shuang-Shuang Ding, Yong Cai, Ming Zhang
Summary: This study proposes a new strategy for preparing Fe9S10 composites by adding sulfur powder into the electrospinning precursor. The composites demonstrate higher rate capacities and better stability compared to those synthesized by traditional methods. The excellent stability and high capacity can be attributed to the nearly full-wrapped structure of Fe9S10 in the carbon matrix.
Article
Nanoscience & Nanotechnology
Weiming Wang, Ji Li, Bo Hu, Shiqiang Zhou, Yong Cai, Ming Zhang
Summary: The Ag-SnO2 nanofiber gas sensor shows high selectivity and response to H2S, with a reversible transformation mechanism between Ag2S and Ag2SO4. This differs from the transformation between Ag2O and Ag2SO4. This study provides a new strategy for designing sensors with high selectivity.
Article
Materials Science, Multidisciplinary
Wentao Qu, Yong Cai, Baohui Chen, Ming Zhang
Summary: This study introduces heterointerface engineering-induced oxygen defects into heterostructure MnO2 (da-MnO2) through in situ electrochemical activation to inhibit manganese dissolution for aqueous zinc ion batteries. Experimental results show that the manganese dissolution of da-MnO2 is significantly inhibited during the charge/discharge cycle. Theoretical analysis indicates that the oxygen defect regulates the electronic and band structure and the Mn-O bonding state of the electrode material, thereby promoting electron transport kinetics as well as inhibiting Mn dissolution. Consequently, da-MnO2 exhibits excellent cycling stability and capacity retention in aqueous zinc ion batteries.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yin Fu, Bo Hu, Guozhi Ma, Ming Zhang
Summary: Polydopamine (PDA) is a promising anode material for potassium ion batteries (PIBs) due to its convenient preparation, environment friendliness, and low cost. However, its low conductivity leads to dissolution of active substance during cycling, resulting in poor rate performance and cycle life. This study polymerized dopamine onto a carbon-intertwined network of carbon nanotubes (CNTs) to address this issue. The pi-pi superposition effect between dopamine and CNTs effectively alleviates the dissolution of PDA, resulting in enhanced battery cycle performance.
Article
Materials Science, Multidisciplinary
Qing Shen, Pengjie Jiang, Hongcheng He, Yanhong Feng, Yong Cai, Danni Lei, Mengqiu Cai, Ming Zhang
Summary: Nitrogen-doped carbon nanofibers and g-C3N4 composites with high nitrogen content serve as a promising anode for PEDS, exhibiting high discharge capacity, rate capacity, and long cycling performance. They also show decent discharge capacity at 0 degrees C and deliver high energy/power density as an anode for PIHC devices.
ENERGY & ENVIRONMENTAL MATERIALS
(2021)
Article
Chemistry, Physical
Jing Chen, Anqiang Pan, Yaping Wang, Xinxin Cao, Wenchao Zhang, Xiangzhong Kong, Qiong Su, Jiande Lin, Guozhong Cao, Shuquan Liang
ENERGY STORAGE MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Qing Shen, Pengjie Jiang, Hongcheng He, Changmiao Chen, Yang Liu, Ming Zhang
Article
Chemistry, Multidisciplinary
Pengchao Li, Changmiao Chen, Zhao Huang, Yong Cai, Ming Zhang