Article
Chemistry, Physical
Jianyuan Wu, Cho-Jen Tsai
Summary: In this study, the effects of Zn-doping on the material structure and electrochemical properties of LiCoPO4 (LCP) were explored, revealing an unreported intermediate phase Li1/2Co1-nZnnPO4 and proposing two conjectured configurations. It was found that the redox potential and conductivity of Zn-doped LCP increase with doping concentration, leading to improved rate capability, cycle life, and energy efficiency.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Wenqin Ling, Zhengguang Zou, Shuchao Zhang, Xiaoxiao Peng, Shiying Luo, Xin Tang, Jing Geng
Summary: Heteroatom doping is a common modification method for lithium-ion battery electrodes, and it can improve the electrochemical performance of materials. In this study, CO2-modified VO2(B) nanorods were synthesized, resulting in a CO2-VO2 electrode with high rate capacity and capacity retention. The role of CO2 small molecules as a pillar in the interlayer of VO2(B) and the weak electrostatic attraction between OCO2 and Li+ contribute to the stability and diffusion of lithium ions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Pilgun Oh, Jeongsik Yun, Jae Hong Choi, Gyutae Nam, Seohyeon Park, Tom James Embleton, Moonsu Yoon, Se Hun Joo, Su Hwan Kim, Haeseong Jang, Hyungsub Kim, Min Gyu Kim, Sang Kyu Kwak, Jaephil Cho
Summary: In this study, a secondary doping ion substitution method is proposed to improve the electrochemical reversibility of LCO materials for Li-ion batteries. The utilization of Na ions as functional dopants and Fe-ion substitution improves the capacity retention and cycling stability of LCO. This provides a new avenue for the manufacturing of layered cathode materials with a long cycle life.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Xinran Li, Cheng Chen, Jian Yang, Zixuan Fang, Shumao Zeng, Tingting Feng, Haiping Zhou, Shu Zhang, Mengqiang Wu
Summary: This study addresses the low conductivity issue of the sodium ion battery cathode by employing transitional metal cation doping and carbon frame design. A stable and firm skeleton structure is achieved through the anchoring effect of external hard carbon layers and the pillar effect of Zn2+, leading to improved rate performance and long cycle life.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Feng Xiao, Ying Meng, Zhiping Lin, Yu Lei, Xianghong Chen, Jiakui Zhang, Haiying Lu, Yiping Tong, Guocong Liu, Jiantie Xu
Summary: In this study, a method to synthesize holey graphene with boron doping has been reported. The resulting boron-doped holey graphene as a cathode material in rechargeable lithium oxygen batteries exhibited excellent electrochemical performance with high capacity and long cycling stability.
Article
Chemistry, Physical
Jiahao Li, Jun Cheng, Yanjun Chen, Chao Wang, Li Guo
Summary: By co-doping K(+) and Zr(4+), the NVP structure was successfully optimized, increasing the Na(+) migration channels and intrinsic electrical conductivity, thereby significantly improving the electrochemical performance.
Article
Chemistry, Physical
Renato Goncalves, Poonam Sharma, Pura Ram, Stanislav Ferdov, M. Manuela Silva, Carlos M. Costa, Rahul Singhal, Rakesh K. Sharma, Senentxu Lanceros-Mendez
Summary: LiMn2O4 and LiMn1.5M0.5O4 (M: Ni, Cu, Co) doped particles were synthesized by sol-gel, resulting in improved cycling behavior and thermal stability. Doping elements reduced pore size and enhanced thermal stability of LiMn2O4. Different active materials for cathodes showed varied electrochemical performances, with Ni, Cu, and Co doped LiMn2O4 demonstrating improved performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Pritamkumar V. Shinde, Dimple P. Dutta
Summary: This study aims to improve the electrochemical performance of tavorite-structured LiFePO4F by co-doping vanadium and sodium ions. The doped cathodes showed reduced particle size, improved reversible capacities, stable cycle performance, better rate capability, and decreased charge transfer resistance. Sodium addition proved to be beneficial for improving the charge transfer kinetics in the lithium vanadium fluorophosphate-based cathodes for lithium-ion batteries.
Article
Electrochemistry
Guo-Xin Huang, Ruo-Heng Wang, Xiao-Yan Lv, Jing Su, Yun-Fei Long, Zu-Zeng Qin, Yan-Xuan Wen
Summary: LiNiO2, a promising cathode material, suffers from poor cyclic stability and inferior rate performance. A strategy based on the synergistic effect of a strong Nb-O bond, high valence state, and larger ionic radius was developed to improve the properties of LiNiO2. The proposed doping strategy effectively enhances the stability and performance of LiNiO2.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Jiawei Zheng, Jianwen Yang, Jinmei Wu, Shengxian Li, Mengwen Wang, Bin Huang, Yanwei Li, Shunhua Xiao, Qing Zhu
Summary: Cathode materials LiFe0.5Mn0.5-xYxPO4@C (x = 0, 0.005, 0.01, 0.02, and 0.03) were synthesized and characterized. Y3+ doping led to volume shrinkage, carbon coating, and improved particle size and dispersion. The preferred LiFe0.5Mn0.49Y0.01PO4@C sample exhibited enhanced electrochemical performance with decreased polarization and improved ion diffusion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yang Zhang, Can Cui, Jie Liu, Yiying Bei, Yingying Li, Zheng Song, Yaxin Feng, Heng Xu, Suhuan Tian, Ye Song, Fengsheng Li
Summary: This study introduces a strategy of co-modification with Nb doping and LiBO2 coating to improve the electrochemical performance of LiNixCoyMn1-x-yO2 (NCM) materials. Experimental results demonstrate that this co-modification method can effectively stabilize the internal structure, reduce cation mixing, and improve the cycling stability of the materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Yu Huang, Kai Wu, Ronghui Hao, Wenkang Miao, Yueling Cai, Peng Wang, Jipeng Cheng, Zihan Wang, Qianqian Li, Bingkun Guo, Anmin Nie
Summary: Li2MnO3, as a traditional member of lithium-rich layered cathodes, shows large specific capacity, but suffers from capacity fading and voltage decay. Iridium doping improves electrochemical performance, with dopant concentration and calcination temperature affecting the performance due to intrinsic microstructure and crystallization. The mechanism of improvement lies in the structure stability induced by iridium doping in TM sites, enhancing high-capacity cathode materials for lithium-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Di Li, Youye Dai, Lingyan Kong, Yuanxiang Gu, Lei Wang
Summary: A (NH4)2(S((S2)Mo(S2))3)/vanadium oxide/graphene oxide composite is synthesized via hydrothermal method and used as the cathode material for aqueous zinc ion batteries. After the first charging/discharging process, a novel vanadium-based cathode is formed, which exhibits excellent electrochemical properties due to the synergistic effect of molybdenum ion doping and graphene oxide supporting. The cathode material shows high discharge capacity, good cycling performance, and high capacity retention.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Applied
Xin Gu, Juntao Wang, Xiaobin Zhao, Xin Jin, Yuzhe Jiang, Pengcheng Dai, Nana Wang, Zhongchao Bai, Mengdi Zhang, Mingbo Wu
Summary: Vanadium-based compounds, such as nitrogen-doped VO2(B) nanobelts, show improved zinc-ion storage performance for aqueous zinc-ion batteries (AZIBs). The nitrogen doping strategy increases the electronic properties and reduces the zinc-ion diffusion barrier of VO2(B), resulting in enhanced ion transport and structural durability. The optimized VO2-N400 electrode exhibits a high specific capacity and stable cycling performance.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Leichao Meng, Jianhong Peng, Yi Zhang, Yongfu Cui, Lingyun An, Peng Chen, Fan Zhang
Summary: In this paper, different methods were employed to prepare lithium vanadium oxide (LVO) samples. It was found that the LVO samples obtained by sol-gel method had uniform nanoparticle morphology. The LVO/graphene (GN) composite synthesized by sol-gel method showed outstanding cycling performance and rate performance, attributed to the improved distribution of LVO by flexible GN and the formation of a highly conductive network.
Review
Materials Science, Multidisciplinary
Jiangmin Jiang, Zhiwei Li, Zhenghui Pan, Shijing Wang, Yaxin Chen, Quanchao Zhuang, Zhicheng Ju, Xiaogang Zhang
Summary: The article provides an overview of the issues associated with zinc metal anodes in rechargeable zinc-ion batteries and discusses various strategies to overcome these issues, such as crystal engineering and structural engineering. Lastly, it discusses the challenges and research directions in this field.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Jiaxiang Chi, Hai Xu, Jiuqing Wang, Xueqing Tang, Shuang Yang, Bing Ding, Hui Dou, Xiaogang Zhang
Summary: In this study, a spherical carbon-confined nanovanadium oxynitride (VNxOy/C) was synthesized and its electrochemical performance as a cathode material for aqueous zinc-ion batteries (ZIBs) was investigated. It was found that the oxidized VN xOy/C exhibited significantly improved reversible capacity and rate performance, which was attributed to the activation of VN xOy/C during the first charging process. The study also revealed that charging voltage and the presence of water in the electrolyte played crucial roles in activating VN xOy/C and enhancing its Zn2+ storage capability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Di Wang, Tiezhu Xu, Miaoran Zhang, Zhenghong Ren, Hao Tong, Laifa Shen
Summary: In this study, an open-layered hydrous tungsten oxide electrode material with unique multi-level nanostructure was proposed, which enables rapid storage and transport of protons and exhibits excellent performance at low temperatures, providing a valuable design strategy for the development of high-performance aqueous proton batteries/pseudocapacitors.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yang Yang, Liufeng Ai, Juhong He, Chuanxiang Zhang, Duo Chen, Laifa Shen
Summary: A hybrid protective layer consisting of Li3N and Li-Bi alloy was developed as an artificial solid electrolyte interface (SEI) layer to promote dendrite-free lithium deposition. Remarkably, this hybrid interface not only facilitated uniform lithium plating but also enabled fast lithium ion transportation, resulting in long-term stability for approximately 2400 hours at a current density of 0.5 mA cm(-2) with a low steady overpotential of 10 mV.
CHEMICAL COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Ruanye Zhang, Hai Xu, Derong Luo, Jiaxiang Chi, Zengjie Fan, Hui Dou, Xiaogang Zhang
Summary: A high-performance organic cathode material, DTT@r-GO, is obtained by tightly wrapping a carbonyl compound, DTT, with reduced graphene oxide, r-GO, through noncovalent interactions. The composite electrode exhibits superior rate performance and considerable calendar life, enabling stable power supply for electronic devices at extreme temperatures. This finding broadens the understanding of noncovalent interactions and inspires the development of organic electrochemical materials.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Zhiwei Li, Yinghong Xu, Jiaxin Cui, Hui Dou, Xiaogang Zhang
Summary: The high value-added utilization of low-grade heat is essential for energy regulation. In this study, a nitrogen-doped hierarchical porous carbon was used to construct high-performance zinc ion thermal charging supercapacitors, enabling the integration of energy conversion and storage. The NHPC material achieved high energy and power density, as well as attractive voltage and thermopower, demonstrating the potential of heat-to-current conversion and storage.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Chen Lv, Wenjie He, Jiangmin Jiang, Enmeng Zhen, Hui Dou, Xiaogang Zhang
Summary: Solvent-free Li4Ti5O12 (LTO) electrodes were prepared using electrostatic spraying deposition, which exhibited higher porosity and electrochemically active surface area compared to wet-coated electrodes. The optimized microstructure improved electrolyte infiltration and Li-ion transport paths, reducing electrochemical polarization and boosting specific capacity. Introduction of 2D graphene nanoplates as conductive agent decreased powder resistivity and effectively suppressed side effects during spraying process. Assembled LICs using dry-sprayed LTO electrodes showed superior energy density and excellent cycling performance, indicating great potential for practical applications.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Chengyang Xu, Aimin Ge, Koki Kannari, Baoxu Peng, Min Xue, Bing Ding, Ken-ichi Inoue, Xiaogang Zhang, Shen Ye
Summary: In this study, highly sensitive surface-enhanced Raman spectroscopy (SERS) was used to reveal the spontaneous desorption behavior of insoluble products of lithium peroxide (Li2O2) from the electrode surface. The electrochemical oxygen reduction reaction (ORR) mechanism at the electrode/Li2O2 interface was elucidated based on a dynamic equilibrium between the generation and desorption of Li2O2. The desorption of adsorbed Li2O2 species (Li2O2*) is crucial in maintaining the stability and discharge plateau of the galvanostatic ORR process.
ACS ENERGY LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Jiang Long, Wenjie He, Haojie Liao, Wenjun Ye, Hui Dou, Xiaogang Zhang
Summary: Polymer binders are crucial for improving the electrochemical performance of silicon-based anodes in lithium-ion batteries. By designing a three-dimensional network structure, which has multiple binding points, the researchers successfully mitigated the volume expansion of the silicon particles during charge and discharge cycles. The synthesized 3D binder showed high electrochemical stability and offered a simple fabrication procedure for the electrode.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Ping Nie, Meiqi Liu, Wenhui Qu, Meiqi Hou, Limin Chang, Zhuomei Wu, Hairui Wang, Jiangmin Jiang
Summary: The high-concentration electrolyte has significant effects in improving the cycle life of potassium ion batteries. However, its application is challenging due to high viscosity, low conductivity, and poor electrode wettability. In this study, a fluorinated localized high concentration electrolyte (LHCE) is designed and proven to have excellent oxidation stability, low flammability, and excellent electrode wettability. The LHCE is further investigated in a half-cell and exhibits high-capacity retention upon cycling. The work provides a theoretical guidance and significant reference for electrode interphase design and engineering.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Kangsheng Huang, Sheng Bi, Hai Xu, Langyuan Wu, Chang Fang, Xiaogang Zhang
Summary: Gel polymer electrolytes (GPEs) are used as alternatives to liquid electrolytes in lithium-metal batteries (LMBs). Adding diluent 1,1,2,2-tetrafluoroethyl 2,2,3,3-tetrafluoropropyl ether (TTE) to regulate the electrolyte structure improves the electrochemical stability and ion transport properties of GPEs. The addition of TTE enhances ion association and forms a robust and low-impedance solid electrolyte interface (SEI) on the anode surface. This study provides an effective approach for controlling solvation structures in GPEs, which can advance the design of GPE-based LMBs in the future.
Article
Materials Science, Multidisciplinary
Juhong He, Liufeng Ai, Tengyu Yao, Zhenming Xu, Duo Chen, Xiaogang Zhang, Laifa Shen
Summary: Cu6Sn5-modified porous Cu skeleton effectively reduces the local current density and guides the uniform lithium deposition. The half-cell exhibits over 300 cycles with high Coulombic efficiency, while the symmetric cell shows a long cycle life and small hysteresis voltage. The full cell also maintains excellent cycling and rate performance when coupled with LiFePO4 cathode.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Jing Zhang, Derong Luo, Hong Xiao, Huizi Zhao, Bing Ding, Hui Dou, Xiaogang Zhang
Summary: A novel functionalized anionic COF-SS-Li was designed by post-synthetic method, which anchored -SO3(-) groups to the COF backbone and converted the imine linkage to a more stable quinoline unit. COF-SS-Li exhibited good lithium-ion transport and high conductivity as a solid-state electrolyte for lithium-ion batteries. The research enriched the field of solid-state electrolytes.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Ruanye Zhang, DeRong Luo, Hai Xu, Jiuqing Wang, Hui Dou, Xiaogang Zhang
Summary: In this study, a new organic anode material with rich redox active centers, well-ordered pore channels, and extraordinary structural stability was reported. The organic anode demonstrated significant specific capacity, high-rate performance, and long cycling stability in aqueous Zn ion batteries. The rocking-chair battery assembled with the organic anode and MnO2 cathode exhibited a superior energy density compared to other reported aqueous Zn ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Electrochemistry
Ziyu Chen, Qianqian Shen, Jianzhen Xiong, Jiangmin Jiang, Zhicheng Ju, Xiaogang Zhang
Summary: Potassium-ion hybrid capacitors (PIHCs) overcome the limitations of potassium-ion batteries (PIBs) and supercapacitors (SCs) by integrating the advantages of both. This review briefly introduces the energy storage mechanism of PIHCs and discusses recent research progress and achievements in anode and cathode materials development. The challenges and prospects of PIHCs are also proposed, along with guiding future research directions.
BATTERIES & SUPERCAPS
(2023)
