Article
Chemistry, Multidisciplinary
Mengqi Gao, Manohar Salla, Yuxi Song, Qing Wang
Summary: This study presents a molecular engineering strategy for AORFBs, in which a pair of anionic organic molecules are used as anode and cathode materials, showing excellent electrochemical stability and cycling stability. Under near-neutral conditions, the flow cell exhibits high voltage and peak power density.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Bin Liu, Chun Wai Tang, Wei Wei, Cheng Zhang, Guochen Jia, Tianshou Zhao
Summary: This paper describes the design and synthesis of terpyridine-based complexes of Cr, Mn, Fe, and Co for non-aqueous redox flow batteries. The electrochemical studies show that these complexes can undergo multi-electron transfer reactions. The Mn and Fe-based complexes exhibit low negative and high positive redox potentials, allowing them to serve as a bipolar electrolyte for symmetric RFBs with a cell voltage of over 2 V. The solubility of these complexes can be improved by incorporating a polyether substituent and optimizing the counter anion. The iron complex [Fe(tpy-O(CH2CH2O)3CH3)2][TFSI]2 has a high solubility of 0.76 M in MeCN. The iron-based NARFB demonstrates superior battery performance with a high cell voltage, columbic efficiency, energy efficiency, and stable charge-discharge capacity retention.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jinxu Gao, Kyumin Lee, Kiana Amini, Roy G. Gordon, Theodore A. Betley, Michael J. Aziz
Summary: In this study, a novel iron-based posolyte redox species, FeTPEN, with high redox potential and remarkable aqueous solubility, paired with a specific compound, demonstrated excellent performance in the redox flow battery. The post analysis of the electrolyte provides insights for future stabilization strategies.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Energy & Fuels
P. Leung, T. Martin, Q. Xu, C. Flox, M. R. Mohamad, J. Palma, A. Rodchanarowan, X. Zhu, W. W. Xing, A. A. Shah
Summary: An all-organic system based on acidic aqueous electrolytes containing 1,3-cyclohexanedione and 1,2-benzoquinone-4,5-disulfonic acid as the organic active materials shows promising performance in redox flow batteries. The proposed molecules exhibit high solubility, negative and positive electrode potentials, and avoid the formation of unstable radicals. This system achieves one of the highest cell voltages and reasonable energy efficiencies reported to date.
Article
Energy & Fuels
Kashif Mushtaq, Sofia Delgado, Adelio Mendes
Summary: Nonaqueous electrolytes allow redox flow batteries to achieve higher energy density. However, carbon felt electrodes available in the market typically exhibit high overpotentials for electrochemical reactions in a nonaqueous medium. Therefore, it is important to develop stable high-performance electrodes that have low activation overpotentials, low ohmic losses, and high porosity for uniform flow-through distribution of the electrolyte. This study investigates the effect of using carbon-based nanoparticles attached to the fibers of the supporting carbon-felt electrodes. Different types of nanoparticles, including reduced graphene oxide, graphene, multi-walled carbon nanotubes (CNT), carbon black Vulcan XC72, and Ketjen carbon nanoparticles bound to the support carbon felt electrode using a Nafion ionomer, were evaluated. Post-mortem analysis showed that the nanoparticles remained attached to the fibers even after extensive charge-discharge cycling. Among the tested electrodes, the carbon felt with CNT displayed the best performance in charge/discharge electrochemical reactions, achieving a 23% higher energy efficiency compared to commonly used electrodes. The addition of noble metal-based nanoparticles Pt-rGO only slightly improved the performance of rGO. Good binding of the carbon nanoparticles was achieved by adding the ionomer at a ratio of 15 wt%.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Environmental
Yan Xiao, Lei Hu, Li Gao, Mengting Di, Xiaojun Sun, Jie Liu, Xiaoming Yan, Gaohong He
Summary: In this study, a membrane with high Cl- conductivity was successfully constructed by proper microstructure design in anion exchange membrane (AEM). The membrane exhibited excellent performance and stability, providing a rational design strategy for the development of large-scale neutral aqueous organic redox flow batteries (NAORFB).
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Lei Liu, Ziyang Guo, Jie Yang, Shuyan Wang, Zhenfeng He, Chao Wang
Summary: Polymer based on norbornene synthesized through ring-opening metathesis polymerization showed outstanding performance in preparing Aquivion-based hybrid membranes, with Aquivion/PAN-10% having the lowest resistance and excellent VO2+ permeability in this study.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Energy & Fuels
Sooraj Sreenath, P. S. Nayanthara, Chetan M. Pawar, M. C. Noufal, Rajaram K. Nagarale
Summary: A new anion exchange membrane with high chemical and thermal stable fluorinated backbone has been developed, showing promising electrochemical and physiochemical properties for energy storage system applications.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Engineering, Chemical
Ping Lu, Peizhuo Sun, Qiang Ma, Huaneng Su, Puiki Leung, Weiwei Yang, Qian Xu
Summary: This study introduces a ternary deep eutectic solvent (DES) by introducing glycerol into the original binary DES, aiming to improve the electrochemical performance of redox flow batteries. The results show that the mass transfer resistance and electrochemical performance of the redox pairs in the ternary DES solvent are improved.
Article
Engineering, Environmental
Jiashu Yuan, Cuijuan Zhang, Qianyuan Qiu, Zheng-Ze Pan, Lijun Fan, Yicheng Zhao, Yongdan Li
Summary: This study presents a facile and efficient strategy to fabricate a high-performance separator for non-aqueous redox flow batteries (NARFBs) using a rolling dough approach. The prepared flexible nanoporous separator exhibits high ionic selectivity and chemical stability, resulting in excellent performance in a lithium-based hybrid NARFB.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Chemistry, Multidisciplinary
Jihan Park, Minsoo Kim, Jinyeong Choi, Soobeom Lee, Jueun Kim, Duho Han, Hyeokjun Jang, Minjoon Park
Summary: This article reviews the recent progress in the design of high energy density redox flow batteries (RFBs) in both aqueous and non-aqueous electrolytes, with a specific focus on the Zn/MnO2 hybrid RFBs. Strategies for inhibiting zinc dendritic growth and stabilizing the manganese redox couple in the RFBs system are also discussed.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Engineering, Environmental
Nanjie Chen, Dongchu Chen, Jingshu Wu, Yuekun Lai, Dongyang Chen
Summary: Researchers have developed a high-energy density non-aqueous catholyte for redox flow batteries (RFBs) by attaching bulky polyethylene glycol tails to tetrathiafulvalene (TTF) particles. The modified catholyte exhibits excellent electrochemical stability and high energy density, making it a promising material for RFBs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Le Yang, Yahui Hao, Jiande Lin, Ke Li, Siheng Luo, Jie Lei, Yanhong Han, Ruming Yuan, Guokun Liu, Bin Ren, Jiajia Chen
Summary: The highly soluble Li5BW12O40 cluster exhibits excellent electrochemical performance and reversible structural changes at different pH values, making it suitable for constructing all-anion aqueous redox flow batteries (RFBs).
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Yimin Zheng, Alvaro Perez Ramos, Hongchun Wang, Gonzalo Alvarez, Alvaro Ridruejo, Jing Peng
Summary: To address the limitations of conventional redox flow batteries (RFBs), a bicontinuous microemulsion-based RFB using methyl-p-benzoquinone and 2,2,6,6-Tetramethyl-1-piperidinyloxy as redox active materials for anolyte and catholyte, respectively, is proposed. By stabilizing a nanometer-scale aqueous and organic medium through a surfactant, the microemulsion electrolyte exhibits a wider electrochemical window and good ionic conductivity, enabling the use of non-aqueous redox species with high solubility and high redox potential to increase energy density. The resulting cell shows promising performance with 80%-85% Coulombic efficiency and 50% capacity retention over 30 cycles. Systematic analysis of performance limitations and capacity decay, along with a proposed dimerization mechanism for the anolyte, is presented, concluding with a discussion on the further efforts needed for the application of microemulsion-based RFBs.
MATERIALS TODAY ENERGY
(2023)
Article
Energy & Fuels
Seshadri Harinipriya, Rupayan Ghosh, Savari Rathinam Sahaya Prabaharan, Venkatachalam Sudha
Summary: By switching the pH of the electrolyte in all aqueous Redox Flow Battery, the device showed improved performance with increased voltage efficiency, capacity retention and volumetric capacity. Improved design parameters can potentially scale up the application of all aqueous RFB for practical use.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Chengcheng Zhao, Shiyun Xiong, Huilan Li, Zhuhong Li, Chu Qi, Hao Yang, Lina Wang, Yu Zhao, Tianxi Liu
Summary: The study introduces a cobalt-enhanced nitrogen doped porous carbon nanofibers (PCNF-Co/N) with enhanced lithiophilic property for lithium metal anode, addressing issues of uncontrolled Li dendrite growth and volume expansion. The synergistic effect between Co and N defects boosts Li affinity and provides crucial roles in uniform plating of Li, while the porous structure formed by Zn sublimation offers buffer space for internal stress during Li plating/stripping.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Hui Chen, Zhihui Niu, Jing Ye, Changkun Zhang, Xiaohong Zhang, Yu Zhao
Summary: Nonaqueous redox flow batteries (NARFBs) hold promise as electrochemical energy storage systems, but the limited solubility of redox-active materials like ferrocene derivatives in nonaqueous phase needs to be addressed. The study introduces a multicore ferrocene derivative, DFDE, with tailored ether chain and multiple ferrocene cores, showing high solubility and improved redox potential compared to pristine ferrocene, enhancing energy density of NARFBs. Electrochemical characterizations reveal DFDE undergoes highly reversible redox reactions with fast electron-transfer rate, leading to stable cycling performance in a cell paired with N-butyl-phthalimide (BuPh).
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Yue Liu, Gaole Dai, Yuanyuan Chen, Ru Wang, Huamei Li, Xueliang Shi, Xiaohong Zhang, Yang Xu, Yu Zhao
Summary: Using bipolar redox-active molecules (BRMs) is a practical way to tackle the problems in redox-flow batteries. However, finding new molecules and achieving high voltage are still challenging. This study successfully designs a new BRM with high voltage and stability using fused conjugation, providing a universal strategy for designing new BRMs.
ACS ENERGY LETTERS
(2022)
Article
Chemistry, Physical
Yu Zhao, Xinke Li, Xing Fan, Hongshuai Wang, Yunliang Liu, Yuanyuan Chen, Tianyu Yang, Jing Ye, Hui Huang, Haitao Li, Xiaohong Zhang, Yang Liu, Haiping Lin, Zhenhui Kang
Summary: This study demonstrates a strategy to produce H2O2 with high yield using an organophotocatalyst, H2O, and O-2 as raw materials under ambient condition. The phase-transfer photocatalytic process involving both photocatalytic reduction of O-2 and photocatalytic oxidation of H2O is found to be the key to achieving high efficiency in H2O2 production.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Luwei Zhang, Yue Liu, Yuanyuan Chen, Yingzhong Zhu, Ru Wang, Gaole Dai, Xiaohong Zhang, Yu Zhao
Summary: This study reveals that tuning the intermolecular interaction between the active material and the supporting electrolyte is another feasible way to enhance the stability and reversibility of non-aqueous organic redox flow batteries (RFBs). By using a supporting electrolyte composed of soft Lewis acid and soft Lewis base, the performance of a redox flow cell based on 4,4'-bipyridine anolyte and ferrocene catholyte is greatly improved. This alternative approach provides an effective solution for addressing the cyclability of organic compounds in non-aqueous RFBs.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Xiao Xia, Tong Liu, Chen Cheng, Hongtai Li, Tianran Yan, Haolv Hu, Yihao Shen, Huanxin Ju, Ting-Shan Chan, Zhenwei Wu, Yuefeng Su, Yu Zhao, Duanyun Cao, Liang Zhang
Summary: Surface CaTiO3 dielectric coating and bulk site-selective Ca/Ti co-doping can effectively suppress the dynamic oxygen evolution and improve the cycling stability and capacity retention of layered Na2/3Ni1/3Mn2/3O2 electrode material.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Mengtian Huang, Ting Wang, Zhen Wu, Yihao Shang, Yu Zhao, Benxia Li
Summary: Artificial photosynthesis is an important strategy for reducing atmospheric CO2 levels and achieving carbon balance. In this study, a CdS/g-C3N4/alpha-Fe2O3 three-component photocatalyst was constructed, which significantly improved the efficiency of CO2 conversion to fuels. This work is of great significance for the rational construction of heterojunction photocatalysts to promote the conversion of CO2 into solar fuels.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Ziao Wang, Yao Xu, Tao Feng, Chaojun Lei, Yu Zhao, Xi Zhu
Summary: Applying NLP to catalytic reaction journals, a gap between photocatalysts and thermal catalysts was found, leading to an investigation on THz catalysis. An excellent Ti3C2F2 MXene electrocatalyst that accelerates the catalytic process of HER and CO2RR is reported, with high selectivity towards the gaseous product CO observed in the CO2RR reaction. The THz catalysis is achieved through the resonance between CO2's vibrational mode and the surface phonon mode, as discussed in detailed computational studies. Potential future applications of MXene in THz catalysis are expected.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Electrochemistry
Ru Wang, Minglei Li, Yue Liu, Gaole Dai, Tingting Wu, Wei He, Shunan Feng, Xiaohong Zhang, Yu Zhao
Summary: In this study, a new strategy is proposed to tune the redox potentials of bipolar redox-active organic molecules (ROMs) with fused conjugation by incorporating electron-withdrawing or electron-donating groups. Three designed bipolar ROMs with fused conjugation based on phenoxazine derivatives exhibit highly reversible redox reactions in the given electrolyte systems. The symmetric organic redox flow batteries (ORFBs) based on these bipolar ROMs maintain decent electrochemical stability when cycled in a compatible electrolyte.
ELECTROCHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Minglei Li, Ru Wang, Tingting Wu, Yue Liu, Yuanyuan Chen, Wei He, Shunan Feng, Xiaohong Zhang, Gaole Dai, Yu Zhao
Summary: Organic materials are promising electrode materials for lithium-ion batteries due to their high theoretical capacity, abundant source, low cost, structure diversity, and environmental friendliness. By extending the conjugated structure and constructing an active unit based on 5,12-dihydrobenzo[b]phenazine(BPZ) and the corresponding polymer p-DPBPZ, the discharge voltage and stability of the organic electrode material is further enhanced. The study also demonstrates the potential of p-DPBPZ as an active material for sodium-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Environmental
Wei Wang, Shuhang Xia, Wenying Xue, Jin Wang, Xiaofei Wang, Huilan Li, Shiru Lin, Yu Zhao, Lina Wang, Yonggang Wang
Summary: Sulfurized polyacrylonitrile (SPAN) is a promising cathode material with high energy density, but it easily triggers irreversible shuttling effect in ether electrolytes. This study reveals the morphological and structural roles responsible for the compatibility of SPAN with ether electrolytes. By controlling molecular rearrangement and protecting SPAN fragments, stable cycling of electrodes and improved recharge ability can be achieved, offering new insights into cathode design of Li-S batteries.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Materials Science, Multidisciplinary
Ting-Ting Wu, Gao-Le Dai, Jin-Jia Xu, Fang Cao, Xiao-Hong Zhang, Yu Zhao, Yu-Min Qian
Summary: Redox-active organic materials are promising for the design of new rechargeable battery materials due to their structural diversity and tunable electrochemical properties. Using abundant chemical elements such as C, H, N, O and S enhances their sustainability and makes them ideal alternatives for Li-ion batteries. However, identifying and screening suitable organic materials has been challenging in the past decades.
Article
Chemistry, Inorganic & Nuclear
Cong Chen, Ting Wang, Ke Yan, Shoujie Liu, Yu Zhao, Benxia Li
Summary: This study presents a Cu single-atom-incorporated photocatalyst that shows superior activity and selectivity in gas-solid and liquid-solid systems, mainly producing methane and ethylene, respectively.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Review
Energy & Fuels
Jiechun Liang, Tingting Wu, Ziwei Wang, Yunduo Yu, Linfeng Hu, Huamei Li, Xiaohong Zhang, Xi Zhu, Yu Zhao
Summary: Artificial intelligence (AI) plays a crucial role in perovskite research, accelerating the improvement of new energy device performance and enhancing energy production efficiency.
Article
Chemistry, Multidisciplinary
Changkun Zhang, Zhihui Niu, Jiwoong Bae, Leyuan Zhang, Yu Zhao, Guihua Yu
Summary: This study presented a new class of high-performance energy storage electrolyte, polyeutectic electrolyte (PEE), with high ionic conductivity and wide electrochemical window, enabling high capacity and excellent stability in various types of batteries. The PEE also displayed enhanced cell Coulombic efficiency when used as a separator in redox flow batteries, showcasing its effectiveness and versatility for high-performance electrical energy storage systems.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Kecheng Long, Shaozhen Huang, Han Wang, Anbang Wang, Yuejiao Chen, Zhijian Liu, Yu Zhang, Zhibin Wu, Weikun Wang, Libao Chen
Summary: This study proposes a low-cost Li foil surface-reconstruction strategy using a mechanochemistry reaction between fumed silica and Li to achieve dendrite-free Li metal anode. The reconstructed surface enhances the electrode dynamics and constructs an anionphilic interface, leading to significantly improved low-temperature and cycling performance of Li metal batteries while maintaining high energy density and stable cycle performance.
ENERGY & ENVIRONMENTAL SCIENCE
(2024)
Article
Chemistry, Multidisciplinary
Changchun Ye, Zhenghui Pan, Qinghua Zhang, Fang Yin, Yanan Wang, Yifei Li, Guangxu Chen, Jia Li, Yongcai Qiu, Geoffrey I. N. Waterhouse, Lin Gu, Zhang Lin, Lin Guo
Summary: A facile synthesis route for heterostructured metal oxides via quenching-induced structural transformation was developed. Multiple quenching triggered the transformation from NiMoO4 to NiFe2O4, creating a novel heterostructure, and the pre-quenching generated disordered defect structure can promote subsequent quenching regulation.
ENERGY & ENVIRONMENTAL SCIENCE
(2024)
Article
Chemistry, Multidisciplinary
Yang Liu, Xufei An, Ke Yang, Jiabin Ma, Jinshuo Mi, Danfeng Zhang, Xing Cheng, Yuhang Li, Yuetao Ma, Ming Liu, Feiyu Kang, Yan-Bing He
Summary: The lack of understanding of ion transport in the cathode of PVDF-based solid-state lithium metal batteries limits their performance. The use of carbon-coated Li1.4Al0.4Ti1.6(PO4)3 nanowires as a cathode filler improves the diffusion of ions in the thick cathode, leading to enhanced battery performance and stability.
ENERGY & ENVIRONMENTAL SCIENCE
(2024)
Article
Chemistry, Multidisciplinary
Zixing Wang, Kang Luo, Jian-Fang Wu, Peng Gao, Kexuan Wang, Shi Chen, Jian Tu, Xiulin Fan, Jilei Liu
Summary: This study improves the performance limitations of potassium-ion batteries at extreme temperatures by regulating the ion-solvent-coordinated structure, leading to enhanced cycling performance and capacity retention.
ENERGY & ENVIRONMENTAL SCIENCE
(2024)
Article
Chemistry, Multidisciplinary
Shan Jiang, Ruyue Wang, Minghua Li, Runnan Yu, Fuzhi Wang, Zhan'ao Tan
Summary: This study developed a synergistic electrical and light management strategy to maximize the voltage output in monolithic perovskite/organic tandem solar cells. By optimizing the interface contact and regulating the donor/acceptor ratio, the fabricated cells achieved remarkable power conversion efficiency and high open-circuit voltage.
ENERGY & ENVIRONMENTAL SCIENCE
(2024)
Article
Chemistry, Multidisciplinary
Gwanho Kim, Jae Won Lee, Kaiying Zhao, Taebin Kim, Woojoong Kim, Jin Woo Oh, Kyuho Lee, Jihye Jang, Guangtao Zan, Jong Woong Park, Seokyeong Lee, Yeonji Kim, Wei Jiang, Shengyou Li, Cheolmin Park
Summary: In this study, a new type of complementary energy harvester that can simultaneously generate moisture-induced and triboelectric power is introduced. This device exhibits high resilience, high energy output, and potential applications in emergency guidance systems.
ENERGY & ENVIRONMENTAL SCIENCE
(2024)