Article
Nanoscience & Nanotechnology
Guofeng Jia, Faqiang Li, Jue Wang, Suqin Liu, Yuliang Yang
Summary: This study introduces a dual substitution strategy by partially replacing Li and Ni with Na and Al in a Co-free layered material, resulting in improved performance and stability of the lithium ion battery cathode. Na+ ion acts as a pillar and cationic barrier, while Al3+ ion stabilizes structure and lattice oxygen, reducing cation disorder in cycling.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Electrochemistry
Renny Nazario-Naveda, Segundo Rojas-Flores, Luisa Juarez-Cortijo, Moises Gallozzo-Cardenas, Felix N. Diaz, Luis Angelats-Silva, Santiago M. Benites
Summary: In this study, the cathodic material xLi(2)MnO(3)-(1-x)LiNi0.5Mn0.5O2 was synthesized using the co-precipitation technique, and the effect of component ratio on the material's structural and electrochemical performance was evaluated. The results revealed the formation of two structural phases, and an increase in the proportion of LiNi0.5Mn0.5O2 component affected the initial irreversible capacity and cycling performance of the material.
Article
Chemistry, Physical
M. A. A. Mohamed, L. Singer, H. Hahn, D. Djendjur, A. Oezkara, E. Thauer, I. G. Gonzalez-Martinez, M. Hantusch, B. Buechner, S. Hampel, R. Klingeler, N. Graessler
Summary: In this study, an antiperovskite (Li2Fe)SeO material was synthesized using a one-step solid-state method. The material showed excellent thermal stability and high cycling performance, making it a promising cathode material for lithium-ion batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Xinghui Liang, Hun Kim, Hun-Gi Jung, Yang-Kook Sun
Summary: A Li-substituted, tunnel/spinel heterostructured cathode has been successfully synthesized in this study, with Li dopant acting as a pillar to inhibit unfavorable multiphase transformation and provide 3D Na+ diffusion channels for improved sodium storage performance and redox reaction kinetics.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Electrochemistry
Munseok S. Chae, Dedy Setiawan, Hyojeong J. Kim, Seung-Tae Hong
Summary: The discovery of a high-performance calcium-ion battery cathode material, FeV3O9·1.2H2O, is significant in the development of high energy density calcium-ion batteries.
Article
Biochemistry & Molecular Biology
Elena V. V. Shchurik, Olga A. A. Kraevaya, Sergey G. G. Vasil'ev, Ivan S. S. Zhidkov, Ernst Z. Z. Kurmaev, Alexander F. F. Shestakov, Pavel A. A. Troshin
Summary: The development of organic electrode materials is crucial due to the increasing demand for affordable, safe, recyclable, and environmentally friendly batteries. In this study, a novel redox-active polymer consisting of a polyaniline-type conjugated backbone and quinizarin and anthraquinone units was synthesized. The polymer exhibited promising performance characteristics as a cathode material in both lithium and potassium cells, with high discharge capacity and excellent stability. The synthetic availability and low projected cost of the designed material make it suitable for practical implementation in scalable and inexpensive organic batteries, which are emerging as a sustainable energy storage technology.
Article
Chemistry, Physical
Roman R. Kapaev, Alexander F. Shestakov, Sergey G. Vasil'ev, Keith J. Stevenson
Summary: The ladder-type conjugated polymer with hexaazatriphenylene moieties serves as a promising cathode material for Li-, Na-, and K-based batteries, exhibiting high specific capacities and excellent cycling stability. The material also shows remarkable capacity retention even at high discharge rates.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Multidisciplinary Sciences
Minsoo Kim, Hyunjae Kim, Inwoo Kim, Barsa Chang, Jang Wook Choi
Summary: Electric vehicles impose higher standards on the lifetime and safety of lithium-ion batteries. This study introduces entropymetry as a real-time analytic tool for monitoring the evolution of microcracks in battery cathodes, providing a nondestructive diagnostic tool for safe and reliable operation of EV batteries.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Chemistry, Physical
Sangjun Kim, Sanghyuk Park, Minsang Jo, Mincheol Beak, Jangho Park, Goojin Jeong, Ji-Sang Yu, Kyungjung Kwon
Summary: The study synthesized cathode active materials with varying Al content and examined the effects on physicochemical, thermal, and electrochemical properties. Results showed that increased Al content in the materials led to irregular particle shape and distribution, reduced initial charge/discharge capacity and cyclability, but improved rate capability. Residual Al was found to adversely affect capacity and cyclability, suggesting that trace amounts of Al in the materials can be tolerated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Wenxiu Hou, Chao Yan, Panrun Shao, Kun Dai, Jun Yang
Summary: This study investigates the application of Prussian blue analogues (PBAs) as electrode materials for aqueous ammonium ion batteries (AAIBs). A PANI/Na0.73Ni[Fe(CN)(6)](0.88) hybrid (PNFF) is synthesized using a covalent bond assisted engineering with in situ polyaniline (PANI) polymerization, combining the high conductivity of PANI and the stability of PBAs. It is found that the PANI content affects the electrochemical performance of PNFF, and an optimized PANI content results in enhanced reversible capacity and cycling stability. The ammonium storage mechanism of PNFF is investigated using in situ Raman and ex situ XPS/FTIR analysis, and a durable aqueous NH4+ full cell is assembled using a polyimide@MXene anode.
Article
Chemistry, Multidisciplinary
Yu-Jie Guo, Chao-Hui Zhang, Sen Xin, Ji-Lei Shi, Wen-Peng Wang, Min Fan, Yu-Xin Chang, Wei-Huan He, Enhui Wang, Yu-Gang Zou, Xin'an Yang, Fanqi Meng, Yu-Ying Zhang, Zhou-Quan Lei, Ya-Xia Yin, Yu-Guo Guo
Summary: Chemical modification of electrode materials by heteroatom dopants is crucial for improving storage performance in rechargeable batteries. This study investigates the competitive doping chemistry of boron and aluminum in nickel-rich cathode materials. The atomic radii difference between B and Al leads to different spatial configurations of bonding with lattice oxygen. The findings provide insights into stabilizing the structural evolution and surface chemistry of the cathode.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Nanoscience & Nanotechnology
Ningjing Luo, Lianggang Feng, Huimin Yin, Andreas Stein, Shuping Huang, Zhufeng Hou, Donald G. Truhlar
Summary: This study investigates the effect of Mn substitution on the oxygen redox mechanism in Li-excess transition metal-oxide cathode materials and finds that Mn substitution effectively inhibits the formation of peroxo and superoxo species. The results provide important insights for the design of high-capacity lithium-ion battery cathode materials.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Seong Ho Oh, Hye Ji Song, Yongho Lee, Jeonghan Kim, Taeeun Yim
Summary: Dually-functionalized Ni-rich NCM cathode materials are developed using aluminum phosphate for surface modification, which effectively suppress undesired reactions and improve cycling retention.
SOLID STATE IONICS
(2021)
Article
Nanoscience & Nanotechnology
Chenkun Li, Yao Xiao, Xiaosong Zhang, Hongwei Cheng, Ya-Jun Cheng, Yonggao Xia
Summary: This study presents a practical method to address the irreversible capacity loss of lithium-ion batteries during initial cycling by utilizing a Li2CO3/carbon nanocomposite as a lithium replenishment material. The nanocomposite, synthesized through high-speed ball-milling, exhibits high specific capacity and capacity retention in the initial charging cycle. By incorporating the nanocomposite in full-cells, the capacity and cycling life of the batteries are significantly improved.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Naoki Kimura, Eiji Seki, Tatsuya Tooyama, Shin Nishimura
Summary: Coating Al2O3 on NCM811 particles can improve the cycle performance of graphite lithium-ion cells by mainly suppressing the growth of surface deposit and NiO-like layer through the formation of solid solution and AlF3 layers.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Ran Wang, Jinzhen Huang, Xinghong Zhang, Jiecai Han, Zhihua Zhang, Tangling Gao, Lingling Xu, Shengwei Liu, Ping Xu, Bo Song
Summary: Developing abundant and efficient electrocatalysts is crucial for the hydrogen energy society. Two-dimensional high-entropy metal phosphorus trichalcogenides serve as excellent catalytic platforms and have demonstrated enhanced HER performance. The combination of high-entropy alloys and 2D materials provides an alternative pathway to design superior catalysts for various electrochemical systems.
Article
Chemistry, Physical
Yuanyuan Zhang, Ping Guo, Siqi Niu, Jie Wu, Wei Wang, Bo Song, Xianjie Wang, Zaixing Jiang, Ping Xu
Summary: This study proposes a strategy to regulate the electron density distribution by integrating NiFe layered double hydroxides (NiFe-LDH) nanosheets with Co3O4 nanowires to construct the NiFe-LDH/Co3O4 p-n heterojunction for electrocatalytic oxygen evolution reaction (OER). The p-n heterojunction can induce charge redistribution and improve the intrinsic activity of the catalyst, resulting in outstanding OER performance.
Article
Nanoscience & Nanotechnology
Xiaoyu Chen, Bojing Sun, Jiayu Chu, Zhi Han, Yu Wang, Yunchen Du, Xijiang Han, Ping Xu
Summary: Environmentally friendly catalysts with excellent performance and low cost are crucial for photocatalysis. In this study, a two-dimensional CoO/h-TiO2 heterostructure was fabricated using hydrogenated TiO2 nanosheets with enriched oxygen vacancies as the support, and it showed a significantly improved photocatalytic hydrogen evolution rate through effective inhibition of Co2+ oxidation and enhanced separation and transportation of photogenerated carriers.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Qiang Fu, Lei Lin, Tao Wu, Qinghua Zhang, Xianjie Wang, Lingling Xu, Jun Zhong, Lin Gu, Zhihua Zhang, Ping Xu, Bo Song
Summary: Fluorine doping enhances the metal-support interaction between F-doped Ni3N support and Ru species, leading to improved activity and stability for electrochemical hydrogen production. This study provides a facile strategy to modulate both catalytic activities and stabilities of heteroatom-loaded catalytic materials.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Ping Guo, Yuanyuan Zhang, Fei Han, Yunchen Du, Bo Song, Wei Wang, Xianjie Wang, Yuhong Zhou, Ping Xu
Summary: This study investigates the effect of coercivity on the oxygen evolution reaction (OER) performance using ferromagnetic nanocrystals with different coercivities. The results show that ferromagnetic materials with higher coercivity exhibit improved OER activity under a magnetic field. Additionally, higher coercivity leads to a longer hysteresis effect.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Jie Wu, Xuetao Qin, Yu Xia, Yuanyuan Zhang, Bin Zhang, Yunchen Du, Hsing-Lin Wang, Siwei Li, Ping Xu
Summary: This study demonstrates an effective strategy for reducing the surface oxidation of CoS2 and improving its catalytic performance for hydrogen evolution by introducing glued V2O5 nanoclusters.
NANOSCALE HORIZONS
(2023)
Article
Chemistry, Physical
Xiaoyu Chen, Zhi Han, Zonghao Lu, Tingting Qu, Ce Liang, Yu Wang, Bin Zhang, Xijiang Han, Ping Xu
Summary: Novel 2D-2D SnS2/CdS heterostructures are demonstrated by loading SnS2 nanosheets onto CdS nanosheets, exhibiting excellent photocatalytic hydrogen evolution activity under visible light. The highest hydrogen evolution rate is achieved on SnS2/CdS heterostructures with 35 wt% SnS2, which is approximately 6-fold higher than that of pure CdS NSs.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Engineering, Environmental
Shu-Chao Sun, Fei-Xiang Ma, Hao Jiang, Meng-Xin Chen, Ping Xu, Liang Zhen, Bo Song, Cheng-Yan Xu
Summary: Dual-phase WC-W2C nanocrystals embedded into hollow carbon dodecahedrons (WC-W2C/HCDs) exhibit competitive HER activities and durability in a wide pH range.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Ranran Liang, Bin Zhang, Yunchen Du, Xijiang Han, Siwei Li, Ping Xu
Summary: A series of Co(OH)(x)(A)(y) materials with different acidic anions were synthesized and their catalytic activity for the OER was determined. Surface oxidation and the content of highly active Co(IV) were found to be crucial parameters for the OER performance. Furthermore, the leaching ability of anions in Co(OH)(x)(A)(y) was directly related to the Co(IV) content and the catalytic activity, which can be summarized as an anion leaching-metal oxidation model. This study provides deep insights into the anion effect of metal basic salt-based OER catalysts and the activation process of pre-catalysts for the OER.
Review
Chemistry, Physical
Yuanyuan Zhang, Jie Wu, Bingrong Guo, Haohao Huo, Siqi Niu, Siwei Li, Ping Xu
Summary: Transition-metal metaphosphates (TMMPs) have been recognized as highly efficient catalysts for both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in water splitting. This review summarizes the recent advances in the synthesis and applications of TMMPs, discusses the strategies for improving their catalytic activity, and explores the future opportunities and challenges in the field of electrocatalysis.
Article
Chemistry, Physical
Jianying Zhao, Yuanyuan Zhang, Yu Xia, Bin Zhang, Yunchen Du, Bo Song, Hsing-Lin Wang, Siwei Li, Ping Xu
Summary: In this study, a novel strong phosphide-metaphosphate interaction (SPmPI) was discovered in the RuP/CoNiP4O12 catalyst for efficient electrocatalytic overall water splitting. The SPmPI facilitates electron transfer and coordination environment, enabling the catalyst to achieve a low overpotential of 27 mV for hydrogen evolution reaction (HER) and effective oxygen evolution reaction (OER) for overall water splitting.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Multidisciplinary
Ce Liang, Kexin Sun, Mengxin Chen, Ping Xu
Summary: This perspective introduces the promising role of two-dimensional transition-metal dichalcogenides (TMDs) in surface-enhanced Raman scattering (SERS) and discusses their fundamental properties, crystal-phase configurations, and phase transition strategies. It emphasizes the importance of crystal phase in determining the SERS effect of TMDs and highlights recent advances in phase-engineering approaches for remarkable SERS performance. By addressing current challenges and future directions in improving the crystal-phase engineering of TMDs in SERS, new insights are provided for the design and synthesis of more promising TMD-based SERS substrates.
Article
Chemistry, Applied
Mengxin Chen, Yuanyuan Zhang, Ran Wang, Bin Zhang, Bo Song, Yanchao Guan, Siwei Li, Ping Xu
Summary: Surface reconstruction of NiS2, NiSe2, and Se-NiS2 during the OER process is studied through in-situ Raman spectroscopy and ex-situ X-ray photoelectron spectroscopy. Se-NiS2 exhibits outstanding OER activity and stability in alkaline conditions, requiring an overpotential of 343 mV at a current density of 50 mA cm-2. The research provides a novel insight into the surface reconstruction and electrocatalytic mechanism of Ni-based chalcogenides.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Physical
Xiaoyu Chen, Zhi Han, Bin Zhang, Bojing Sun, Yu Wang, Yunchen Du, Xijiang Han, Ping Xu
Summary: This study utilized the local surface plasmon resonance (LSPR) effect of WS2 nanosheets to construct 1T-WS2/2H-WS2/CdS heterostructures with excellent photocatalytic performance for hydrogen production through photocatalytic water splitting. These heterostructures exhibited strong light absorption ability and good photocorrosion resistance, and could maintain stable performance in long reaction cycles.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Yuanyuan Zhang, Qiang Fu, Bo Song, Ping Xu
Summary: This paper highlights the recent progress in the regulation strategies for TMO-based electrocatalysts. By controlling the particle size, interfaces, and atomic level of TMO, the catalytic performance of TMO-based electrocatalysts has been greatly enhanced. Additionally, external field effects have also been shown to manipulate the catalytic property of TMO-based electrocatalysts. These regulation strategies provide significant opportunities for the fundamental investigation and practical applications of TMO-based electrocatalysts.
ACCOUNTS OF MATERIALS RESEARCH
(2022)