Article
Chemistry, Physical
Hyung Gi Kim, Yong Joon Park
Summary: Lithia-based cathodes have high capacity but are susceptible to electrolyte reactions, leading to decreased electrochemical performance. Developing a MgF2 coating through in situ electrochemical reactions effectively protects the cathode, with the thin coating not requiring high-temperature treatment, thereby improving the electrochemical performance. The use of an inorganic MgF2 coating derived from a Mg salt has shown superior electrochemical performance for lithia-based cathodes compared to conventional electrolytes with or without a VC additive.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Chaoqi Wang, Rui Wang, Zhongyuan Huang, Mihai Chu, Wenhai Ji, Ziwei Chen, Taolue Zhang, Jingjun Zhai, Huaile Lu, Sihao Deng, Jie Chen, Lunhua He, Tianjiao Liang, Fangwei Wang, Jun Wang, Yonghong Deng, Weihua Cai, Yinguo Xiao
Summary: Utilizing in operando neutron diffraction technique, structural characteristics and lithium ion migration pathways of electrodes in LiNi0.5Co0.2Mn0.3O2 /Graphite full cell were revealed. The competition effect between delithiation and magnetic frustration affects the concentration of Li/Ni antisite defects in the cathode, while lithium ions diffuse via different hopping paths in different stages of charge. The study provides insights for designing an optimized pathway for achieving high-performance Li-ion batteries.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Physical
Haoru Wu, Likun Zhu, Yongzhu Fu
Summary: Molecular organosulfides are a type of cathode materials that possess high capacity and sustainability. This study reports a strategy to prevent their dissolution by anchoring 1,2-benzenedithiolate molecule and forming organosulfide-metal complex in situ in the cathode of a lithium battery. The effectiveness of this strategy is demonstrated and the redox mechanism is proposed.
JOURNAL OF POWER SOURCES
(2023)
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, Physical
Yu Liu, Jian Zhi, Tuan K. A. Hoang, Min Zhou, Mei Han, Yan Wu, Qiuyu Shi, Rong Xing, P. Chen
Summary: In this study, an artificial cathode-electrolyte interface (CEI) design using paraffin is proposed to improve the capacity retention and cycling stability of aqueous rechargeable zinc-ion batteries (ARZIBs).
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Shuang Li, Yipeng Sun, Ning Li, Wei Tong, Xueliang Sun, Charles T. Black, Sooyeon Hwang
Summary: In this study, two different types of porous structures in high-voltage lithium, manganese-rich layered cathodes are revealed, along with the significance of the interface between the cathode and electrolyte in solid-state batteries. Nanopores are found near the interface, while nanovoids are formed during in situ Li+ extraction. Despite the development of nanovoids, the layered structure is preserved.
Article
Chemistry, Physical
Limin Man, Yu Yang, Hui Wang, Yinyan Wang, Yanan An, Jiali Bao, Chaoyang Wang, Zhuohong Yang
Summary: A novel eco-binder WPUP was developed to improve the charge-discharge cycle performance of rechargeable lithium-sulfur batteries, resulting in enhanced capacity and cycling stability. The design strategy of this binder shows great potential in developing high-capacity and long cycle stable LSBs.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Linzhe Wang, Jian Qin, Zhimin Bai, Huaming Qian, Yanyan Cao, Hirbod Maleki Kheimeh Sari, Yukun Xi, Hui Shan, Shuai Wang, Jiaxuan Zuo, Xiaohua Pu, Wenbin Li, Jingjing Wang, Xifei Li
Summary: In this study, in situ Zn-doped NCM material was successfully designed by atomic layer deposition combined with annealing. Compared with ex situ Zn-doped NCM, in situ Zn-NCM exhibited better stability and reduced surface defects due to its lower migration energy barrier and more uniform distribution of heteroatoms. As a result, it showed higher reversible capacity and initial Coulombic efficiency. Therefore, in situ doping is an effective strategy to enhance the performance of lithium-ion battery cathodes.
Article
Chemistry, Physical
Huize Jiang, Yu Han, Hui Wang, Yuhao Zhu, Qingpeng Guo, Haolong Jiang, WeiWei Sun, Chunman Zheng, Kai Xie
Summary: All-solid-state Li-S batteries assembled with inorganic solid electrolyte have high safety and theoretical energy density, but the interfaces among components in composite cathodes have been a key factor affecting performance. In-situ chemical reactions such as thermal reduction and in-situ growth can be employed to improve interface performance by constructing conductive and ionic channels on the surface of Li2S.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Inorganic & Nuclear
Petteri Laine, Marianna Hietaniemi, Juho Valikangas, Toni Kauppinen, Pekka Tynjala, Tao Hu, Shubo Wang, Harishchandra Singh, Lassi Ulla
Summary: The co-precipitation of Ni0.8Co0.1Mn0.1(OH)(2) (NCM811) and Mg-doped (0.25 wt% and 0.5 wt%) NCM811 precursors from concentrated metal sulphate solutions was investigated. The study aimed to understand the impact of magnesium dopant on the co-precipitation step and the performance of Li-ion battery cells using NCM811 as the cathode active material. The results showed that magnesium was fully co-precipitated in the NCM811 precursors and evenly distributed throughout the sample. However, contrary to expectations, magnesium doping did not improve the cyclability of coin cells. Evaluation in pouch cells after 1000 cycles showed a slight improvement in cyclability. Washing effects were observed in lattice parameters, and washing also decreased the capacity retention after 62 cycles for all samples.
DALTON TRANSACTIONS
(2023)
Review
Chemistry, Inorganic & Nuclear
Yuxi Luo, Xiaoyu Gao, Mingjie Dong, Tao Zeng, Ziwei Chen, Maolin Yang, Zhongyuan Huang, Rui Wang, Feng Pan, Yinguo Xiao
Summary: Neutron diffraction techniques are indispensable in exploring the structural properties of electrode materials in lithium-ion batteries. They provide in-depth understanding of fundamental mechanisms and are crucial for the development of high-performance electrode materials. However, the application of this technique seems to be less widespread compared to X-ray diffraction, and more attention should be paid.
CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
(2023)
Article
Energy & Fuels
Mengchao Yi, Fachao Jiang, Languang Lu, Jianqiao Ren, Mingxin Jin, Yuebo Yuan, Yong Xiang, Xiaofeng Geng, Xingong Zhang, Xuebing Han, Minggao Ouyang
Summary: This study proposed a method of in situ testing of batteries using ultrasound, and analyzed the acoustic energy to evaluate the state of the active material. The results showed a high correlation between acoustic energy and the calculated acoustic impedance of the active material, indicating that ultrasound is an effective method for studying the status of Li-ion batteries.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Jiajun Huang, Tong Yan, Mengli Tao, Weifeng Zhang, Wei Li, Guangli Zheng, Li Du, Zhiming Cui, Xiujun Wang, Shijun Liao, Huiyu Song
Summary: A localized high-concentration electrolyte (LHCE) was designed in this study, which used carbonate as the base solvent, hexafluoroisopropyl methyl ether (HFME) as the diluent, and vinylene carbonate (VC) as the filmogen to achieve a stable solid-solid cyclic process in lithium-sulfur batteries. The use of LHCE significantly improved the cyclic performance and stability of the batteries. Overall, this work provides a universal strategy to enhance the performance of Li-S batteries. Evaluation: 9 points.
JOURNAL OF POWER SOURCES
(2023)
Article
Energy & Fuels
Yanxi Yu, Zixun Yu, Leo Lai, Fangzhou Liu, Zhi Zheng, Liuyue Cao, Yuanyuan Yao, Dong Suk Han, Li Wei, Yuan Chen
Summary: The performance of lithium manganate (LMO) can be significantly improved by wrapping it with ion-selective reduced graphene oxide (rGO) coatings. The rGO coatings attract cations from low lithium concentration simulated seawater and restrict the mass transfer of large ions, resulting in enhanced capacity retention and extraction purity of LMO.
Article
Materials Science, Multidisciplinary
Wei Wang, Chen Zhao, Jixing Yang, Peixun Xiong, Hai Su, Yunhua Xu
Summary: In this study, a bipolar organic cathode was prepared by in-situ electropolymerization of amino-phenyl carbazole naphthalene diimide (APCNDI), which effectively addressed the dissolution issue and demonstrated excellent electrochemical performance, stable cycling performance, and superior rate performance. The findings provide a novel strategy for the design and fabrication of electrodes for high-performance organic batteries.
SCIENCE CHINA-MATERIALS
(2021)
Article
Chemistry, Physical
Qinguang Liu, Mei Geng, Ting Yu, Li Zhang, Changdong Wu, Jie Liu, Shulin Zhao, Qingxin Yang, Robin Song, Jingjuan Ye, Fenfen Wang, Yuping Wu, Dengji Xiao, Yuhui Chen
Summary: Potassium metal battery is a promising alternative for large-scale energy storage, but suffers from capacity fading and safety issues. A newly designed electrolyte with super bulky [BPh4](-) anions is able to improve potassium ion migration and transference number, solving the instability problem of the battery. Additionally, the electrolyte promotes uniform distribution of potassium flux on the metal anode, improving potassium deposition efficiency and battery cycle life.
Article
Chemistry, Multidisciplinary
Chaolin You, Wenbin Wu, Wangsheng Yuan, Peng Han, Qianyu Zhang, Xi Chen, Xinhai Yuan, Lili Liu, Jilei Ye, Lijun Fu, Yuping Wu
Summary: This study demonstrates a low-cost brine refrigerant electrolyte that enables high ionic conductivity and stable operation of an aqueous energy storage device at low temperatures. The investigation reveals the effect of different cations on reducing the freezing point of aqueous electrolytes and provides a rational design strategy for green, inexpensive, and safe low-temperature aqueous electrolytes for energy storage devices.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shanshan Sun, Minglin Zhao, Qingwei Wang, Shujie Xue, Qinghong Huang, Nengfei Yu, Yuping Wu
Summary: Creating flexible batteries for wearable and portable electronics is crucial. The traditional DMFC cannot be used in flexible devices due to its mechanical assembly and lack of flexibility. This study presents a flexible all-solid-state DMFC using a flexible membrane electrode assembly with TiC-modified carbon cloth as a supporting layer. Additionally, the solid methanol fuels used in this DMFC have the advantages of being small, light, and having high energy density. The flexible all-solid-state DMFC has a high power density of 14.06 mW cm(-2) and negligible voltage loss after 50 bends at 60 degrees. Its energy density of 777.78 Wh kg(-1) surpasses flexible lithium-ion batteries, making it advantageous for commercializing flexible electronic products.
Article
Polymer Science
Zhuoyuan Zheng, Haichuan Cao, Wenhui Shi, Chunling She, Xianlong Zhou, Lili Liu, Yusong Zhu
Summary: A zinc-alginate hydrogel-polymer electrolyte was prepared to solve the issues of dendrite growth, capacity degradation, and short lifetime in aqueous zinc-ion batteries. The hydrogel-polymer electrolyte exhibited high ionic conductivity, excellent mechanical properties, and good thermal and electrochemical stability.
Review
Chemistry, Physical
Tao Wang, Jiarui He, Xin-Bing Cheng, Jian Zhu, Bingan Lu, Yuping Wu
Summary: This review summarizes the research on lithium-sulfur batteries with high sulfur loading based on adsorption-catalysis dual promotion strategies. It covers the principle, technical challenges, electrode materials design, potential approaches, and suggestions for constructing next-generation lithium-sulfur batteries.
ACS ENERGY LETTERS
(2023)
Review
Chemistry, Multidisciplinary
Tao Wang, Jiarui He, Zhi Zhu, Xin-Bing Cheng, Jian Zhu, Bingan Lu, Yuping Wu
Summary: Heterostructures can regulate lithium polysulfides through efficient catalysis and strong adsorption, effectively addressing the poor reaction kinetics and severe shuttling effect in lithium-sulfur batteries. This review systematically analyzes the principle and application of heterostructures as sulfur hosts, interlayers, and separator modifiers to enhance the performance of lithium-sulfur batteries. Furthermore, future challenges and prospects of heterostructures in lithium-sulfur batteries are discussed.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jian Peng, Eleanor Parker, Helen E. A. Brand, Neeraj Sharma
Summary: The structural and thermal evolution of alkali-ion inserted ReO3 electrodes were studied using in situ and ex situ synchrotron X-ray diffraction. Sodium and potassium insertion involved intercalation into ReO3 and a two-phase reaction. Lithium insertion showed a more complex evolution with a conversion reaction at deep discharge. The thermal properties of A(x)ReO(3) phases (where A = Li, Na, or K) were significantly modified, indicating the impact of alkali-ion insertion on the thermal properties of ReO3.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Energy & Fuels
Uttam Mittal, Matthew Teusner, Helen E. A. Brand, Jitendra Mata, Dipan Kundu, Neeraj Sharma
Summary: Lithium-ion batteries are crucial for electric vehicles and renewable energy storage. The development of new electrode materials is vital to meet various considerations. In this study, Y2W3O12 was demonstrated as a high-rate anode material in lithium-ion batteries, with post-synthetic milling and carbon coating significantly enhancing its performance. The carbon-coated electrodes showed remarkable rate performance and long-term cycling stability, indicating the potential for fast-charge and high-power applications. This post-synthesis process can also be applied to improve the electrochemical performance of other electrode materials.
Article
Chemistry, Multidisciplinary
Nekane Nieto, Julien Porte, Damien Saurel, Lisa Djuandhi, Neeraj Sharma, Alexander Lopez-Urionabarrenechea, Veronica Palomares, Teofilo Rojo
Summary: Hard carbons are produced from waste biomass (spent coffee grounds, sunflower seed shells and rose stems) by two methods: direct pyrolysis and by combined hydrothermal carbonization and pyrolysis. Electrochemical performance of as-obtained hard carbons using hydrothermal carbonization combined with pyrolysis is improved with up to 76% ICE and 280 mAh g-1 at C/5.
Article
Energy & Fuels
Tahereh Jalalabadi, Jimmy Wu, Behdad Moghtaderi, Neeraj Sharma, Jessica Allen
Summary: Carbonate gasification causes exfoliation of graphite to form turbostratic carbon at 800°C. Treatment with molten ternary eutectic carbonate leads to significant changes in the lattice distance of graphene sheets in graphite above 750°C. Approximately 50% of graphite experiences interlayer expansion, modifying the conventional d spacing of 0.34 nm to intervals between 0.41 nm and 1.22 nm.
Article
Chemistry, Physical
Matthew Teusner, Uttam Mittal, Martina Lessio, Bernt Johannessen, Jitendra Mata, Neeraj Sharma
Summary: We report the use of copper tartrate, an inexpensive and off-the-shelf metal-carboxylate, as a high-capacity anode material for lithium-ion batteries, achieving a specific capacity of 744 mA h g(-1) when cycled at 50 mA g(-1). Advanced techniques, including XAS, XRD, SANS, and USANS, were used to investigate the structure-performance relationship of the electrode and uncover an unusual capacity gain with cycling.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Matthew Teusner, Jitendra Mata, Bernt Johannessen, Glen Stewart, Sean Cadogan, Neeraj Sharma
Summary: Holistic investigations into battery electrode mechanisms are crucial for developing competitive and sustainable battery materials. This study used metal-dicarboxylate metal-organic frameworks as anode materials, which showed improved performance with adjustable nano and microstructures. The dissolution of active materials was found to be greater in water-based slurries, leading to better distribution and dispersion and increased specific capacity. This formulation approach also allows for the replacement of toxic materials with environmentally friendly alternatives.
MATERIALS ADVANCES
(2023)
Article
Chemistry, Physical
Matthew Teusner, Jitendra Mata, Neeraj Sharma
Summary: This study investigates the reaction between dicarboxylic acids and copper current collectors in battery electrodes and its influence on the microstructure and electrochemical performance. It is discovered that copper-carboxylates, not the parent acid, are the active materials. This research paves the way for using the current collector as an active component in electrode formulation, rather than just an inactive component of a battery.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Wangsheng Yuan, Ye Yuan, Junwei Wu, Chaolin You, Yishuang He, Xinhai Yuan, Qinghong Huang, Lili Liu, Lijun Fu, Yuping Wu
Summary: By constructing an Al-complexed artificial interfacial layer on the zinc surface, the wettability of the electrolyte is improved, side reactions are inhibited, and zinc-ion flux is regulated, resulting in long cycle life for aqueous zinc-ion batteries.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Chuan Tan, Wentao Wang, Yuping Wu, Yuhui Chen
Summary: Lithium-oxygen batteries face numerous challenges, including the controversy surrounding their discharge-charge cycling method and the reactivity of superoxide intermediates. This study investigated the influence of current density and electrode potential on side reactions and discharge products. The use of a flow cell setup helped identify more reactive intermediates in the surface route compared to the solution route.
FARADAY DISCUSSIONS
(2023)
