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Proton Intercalation/De-intercalation Chemistry in Phenazine-based Anode for Hydronium-ion Batteries

Angewandte Chemie 2023年第47期135卷

作者： Dr. Yuanyuan Ma Yuan Wei Wenjuan Han Yuhao Tong AJing Song Jianhua Zhang Prof. Hongbao Li Prof. Xifei Li Prof. Jianping Yang State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 P. R. China Shaanxi International Joint Research Center of Surface Technology for Energy Storage Materials Xi'an Key Laboratory of New Energy Materials and Devices Institute of Advanced Electrochemical Energy & School of Materials Science and Engineering Xi'an University of Technology Xi'an 710048 P. R. China Institutes of Physical Science and Information Technology Key Laboratory of Structure and Functional Regulation of Hybrid Material (Ministry of Education) Anhui University Hefei 230601 P. R. China

Hydronium-ion batteries have received significant attention owing to the merits of extraordinary sustainability and excellent rate abilities. However, achieving high-performance hydronium-ion batteries remains a challenge due to the inferior properties of anode materials in strong acid electrolyte. Herein, a hydronium-ion battery is constructed which is based on a diquinoxalino [2,3-a:2’,3’-c] phenazine (HATN) anode and a MnO 2 @graphite felt cathode in a hybrid acidic electrolyte. The fast kinetics of hydronium-ion insertion/extraction into HATN electrode endows the HATN//MnO 2 @GF battery with enhanced electrochemical performance. This battery exhibits an excellent rate performance (266 mAh g −1 at 0.5 A g −1 , 97 mAh g −1 at 50 A g −1 ), attractive energy density (182.1 Wh kg −1 ) and power density (31.2 kW kg −1 ), along with long-term cycle stability. These results shed light on the development of advanced hydronium-ion batteries.

关键词： Aqueous Battery High Power Density Hydronium Storage Hydronium-Ion Battery Phenazine-Based Electrode

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High-Efficiency Perovskite Solar Cells with Imidazolium-Based Ionic Liquid for surface Passivation and Charge Transport

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Angewandte Chemie 2020年第8期133卷

作者： Xuejie Zhu Minyong Du Dr. Jiangshan Feng Hui Wang Zhuo Xu Likun Wang Shengnan Zuo Chenyu Wang Ziyu Wang Cong Zhang Xiaodong Ren Prof. Shashank Priya Dr. Dong Yang Prof. Shengzhong (Frank) Liu Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 China Dalian National Laboratory for Clean Energy iChEM Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China Materials Science and Engineering Pennsylvania State University University Park PA 16802 USA

surface defects have been a key constraint for perovskite photovoltaics. Herein, 1,3-dimethyl-3-imidazolium hexafluorophosphate (DMIMPF 6 ) ionic liquid (IL) is adopted to passivate the surface of a formamidinium-cesium lead iodide perovskite (Cs 0.08 FA 0.92 PbI 3 ) and also reduce the energy barrier between the perovskite and hole transport layer. Theoretical simulations and experimental results demonstrate that Pb-cluster and Pb-I antisite defects can be effectively passivated by [DMIM] + bonding with the Pb 2+ ion on the perovskite surface, leading to significantly suppressed non-radiative recombination. As a result, the solar cell efficiency was increased to 23.25 % from 21.09 %. Meanwhile, the DMIMPF 6 -treated perovskite device demonstrated long-term stability because the hydrophobic DMIMPF 6 layer blocked moisture permeation.

关键词： energy levels ionic liquids passivation perovskites stability

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Polymer Boosts High Performance Perovskite Solar Cells: A Review

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advanced Optical Materials 2023年第1期12卷

作者： Yabin Ma Jinghao Ge Alex K.-Y. Jen Jiaxue You Shengzhong (Frank) Liu Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology International Joint Research Center of Shaanxi Province for Photoelectric Materials Science Institute for Advanced Energy Materials School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 China Department of Materials Science and Engineering Hong Kong Institute for Clean Energy City University of Hong Kong Hong Kong SAR 999077 China Dalian National Laboratory for Clean Energy iChEM Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China University of the Chinese Academy of Sciences Beijing 100039 China

Perovskite solar cells (PSCs) with excellent photoelectric properties have attracted much attention in recent years. However, the solution manufacturing of PSCs inevitably introduces a large number of defects (both bulk and surface defects), which seriously affect the performance of PSCs. Defect passivation from additive engineering is an effective and simple strategy. Among these additives, polymers are increasingly attracting attention due to their excellent properties, such as adjustable structures, multiple functional groups, excellent stability, and low cost, which can further promote the commercialization of PSC technology. However, the application of polymers in PSCs have encountered some obstacles due to a lack of systematic studies, such as unelucidated interactions between polymers and perovskites, the frequent trial-and-error process used in material selection, and the lack of effective guidelines. In this review, the application of polymers in various layers of PSCs devices is first summarized. Then, three main roles of polymers in PSCs are summarized, including crystallization regulation, the mechanical stability enhancement of flexible perovskite solar cells (FPSCs), and their use as undoped hole transport materials (HTMs). More importantly, machine learning (ML) is proposed to design and select polymers as passivators and HTMs for PSCs. Finally, promising guidelines and recommendations are provided for the commercialization of PSCs.

关键词： machine learning perovskite solar cells polymer engineering self-healing undoped hole transport materials

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Corrigendum to “Sea urchin-like [email protected] electrocatalysts with high FAOR performance: Coefficient of lattice strain and electrochemical surface area” [Appl. Catal. B: Environ. 260 (2020) 118200/apcatb.2019.118200]

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Applied Catalysis B: Environmental 2020年 269卷

作者： Long Yang Guoqiang Li Jifang Chang Junjie Ge Changpeng Liu Vladimir Fateev Guiling Wang Zhao Jin Wei Xing State Key Laboratory of Electroanalytical Chemistry Laboratory of Advanced Power Sources Changchun Institute of Applied Chemistry Chinese Academy of Sciences Renmin Street No. 5625 Changchun 130022 PR China Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education College of Materials Science and Chemical Engineering Harbin Engineering University Harbin 150001 PR China National Research Center “Kurchatov Institute” 1 Akademika Kurchatova sq. 123182 Moscow Russia

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Fluoroethylamine engineering for Effective Passivation to Attain 23.4% Efficiency Perovskite Solar Cells with Superior Stability

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advanced Energy Materials 2021年第30期11卷

作者： Hang Su Jing Zhang Yingjie Hu Xinyi Du Ying Yang Jiaxue You Lili Gao Shengzhong (Frank) Liu Dalian National Laboratory for Clean Energy iChEM Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China University of Chinese Academy of Sciences No.19(A) Yuquan Road Shijingshan District Beijing 100049 China Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology Institute for Advanced Energy Materials School of Materials Science and Engineering Shaanxi Normal University Xi'an Shaanxi 710119 China

Defects in perovskite layers usually cause nonradiative recombination, impairing device performance and stability. Here, fluoroethylamine (FC 2 H 4 NH 3 , FEA) is integrated into the perovskite film to passivate defects. By engineering of different amounts of fluorine in the molecule, it is found that when 2-fluoroethylamine (1FEA), in which one F bonds to the first carbon atom at the end of the molecule's structure, is used, the F atoms appear to be distributed throughout the bulk to the very surface. When 2,2-difluoroethylamine (2FEA) and 2, 2, 2-trifluoroethylamine (3FEA) are used, F is prone to distribution in the bulk of the perovskite film, while there appears to be no detectable F content on the surface. With the FEA passivation, the nonradiative recombination is suppressed, the carrier-lifetime is improved to 840.01 ns, and the film-air interface offers greater hydrophobicity, especially in the case of 1FEA, where because it is distributed throughout the film thickness, it passivates more defects and delivers the highest efficiency, as much as 23.40%. The device with 3FEA shows the best environmental stability; specifically, the bare cell without any encapsulation maintains 87% of its initial efficiency after exposure to the ambient environment for 1200 h.

关键词： fluoroethylamine gradient distribution high efficiency high stability perovskite solar cells

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Anodic Hydrazine Oxidation Assists Energy‐Efficient Hydrogen Evolution over a Bifunctional Cobalt Perselenide Nanosheet Electrode

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Angewandte Chemie 2018年第26期130卷

作者： Jun‐Ye Zhang Hongming Wang Yifan Tian Ya Yan Qi Xue Ting He Hongfang Liu Chundong Wang Yu Chen Bao Yu Xia Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology (HUST) 1037 Luoyu Road Wuhan 430074 P. R. China Institute for Advanced Study Nanchang University 999 Xuefu Road Nanchang P. R. China School of Optical and Electronic Information Huazhong University of Science and Technology (HUST) 1037 Luoyu Road Wuhan 430074 P. R. China School of Materials Science & Engineering University of Shanghai for Science and Technology 516 Jungong Road Shanghai 200093 P. R. China Key Laboratory of Macromolecular Science of Shaanxi Province Key Laboratory of Applied Surface and Colloid Chemistry (MOE) Shaanxi Key Laboratory for Advanced Energy Devices School of Materials Science and Engineering Shaanxi Normal University 199 Chang'an Rd Xi'an 710062 P. R. China Shenzhen Institute of Huazhong University of Science and Technology 9 Yuexing Road Shenzhen 518000 P. R. China

Water electrolysis is a promising source of hydrogen; however, technological challenges remain. Intensive efforts have focused on developing highly efficient and earth‐abundant electrocatalysts for water splitting. An effective strategy is proposed, using a bifunctional tubular cobalt perselenide nanosheet electrode, in which the sluggish oxygen evolution reaction is substituted with anodic hydrazine oxidation so as to assist energy‐efficient hydrogen production. Specifically, this electrode produces a current density of 10 mA cm −2 at −84 mV for hydrogen evolution and −17 mV for hydrazine oxidation in 1.0 m KOH and 0.5 m hydrazine electrolyte. An ultralow cell voltage of only 164 mV is required to generate a current density of 10 mA cm −2 for 14 hours of stable water electrolysis.

关键词： Cobaltperselenide Difunktionale Elektrokatalysatoren Hydrazinoxidation Wasserstoffentwicklung

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Molecular Doping of Flexible Lead-Free Perovskite-Polymer Thick Membranes for High-Performance X-Ray Detection

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Angewandte Chemie 2022年第41期134卷

作者： Xinmei Liu Haojin Li Qingyue Cui Shumei Wang Chuang Ma Nan Li Nuo Bu Tinghuan Yang Xin Song Yucheng Liu Zhou Yang Kui Zhao Shengzhong (Frank) Liu Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology Institute for Advanced Energy Materials School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 P. R. China Dalian National Laboratory for Clean Energy iChEM Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P. R. China Department of Chemical Physics Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) University of Science and Technology of China (USTC) Hefei 230026 P. R. China Solar and Photovoltaic Engineering Research Center (SPERC) King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia

X-ray detectors have broad applications in medicine and industry. Although flexible lead-free perovskite films are competitive because of their lightweight and low toxicity, they are less efficient due to low charge transport. Herein, we report low-toxicity, flexible X-ray detectors based on p-type doped MA 3 Bi 2 I 9 (MA=methylammonium) perovskite-filled membranes (PFMs). Strong coordination between dopant 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) and MA 3 Bi 2 I 9 and the establishment of charge-transfer complex (CPX) improved the conductivity by four times. The flexible X-ray detector achieved a high sensitivity of 2065 μC Gy air −1 cm −2 and an ultra-low detection limit of 2.71 nGy air s −1 , which is among the highest values in all environmentally friendly flexible X-ray detectors. Importantly, the PFMs retained excellent charge transport under mechanical stress. All of those make flexible MA 3 Bi 2 I 9 membranes more competitive as next-generation X-ray detection.

关键词： Doping Flexible Lead-Free Membrane Perovskite

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Spontaneous Interface Healing by a Dynamic Liquid-Crystal Transition for High-Performance Perovskite Solar Cells

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advanced materials (Deerfield Beach, Fla.) 2022年第49期34卷 e2207362页

作者： Xinyi Du Lu Zhang Ran Chen Jiaxue You Yabin Ma Jungang Wang Yin Wu Baibai Liu Kui Zhao Jiangzhao Chen Xinbing Chen Zhongwei An Shengzhong Frank Liu Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology International Joint Research Center of Shaanxi Province for Photoelectric Materials Science Institute for Advanced Energy Materials School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 P. R. China. Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education) College of Optoelectronic Engineering Chongqing University Chongqing 400044 P. R. China. Dalian National Laboratory for Clean Energy iChEM Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P. R. China. University of the Chinese Academy of Sciences Beijing 100039 P. R. China.

Low-temperature solution processing of thin-film semiconductors is more cost-effective than traditional vacuum processing; however, it leads to more defects during fast bulk crystallization and residual tensile stress. Herein, a new strategy of dynamic liquid-crystal transition (DLCT) is developed to solve these problems in one step. The design principle is used to suggest that the DLCT molecule should firstly interact with the perovskite grains in the bulk and meanwhile go through a dynamic transition to spontaneously heal the interface. A thermotropic LC molecule (CBO6SS6OCB) is then designed to demonstrate the strategy. The LC interacting with perovskite colloid forms an intermediate adduct to retard the crystallization. The annealing processes stimulate the concentrated LC solid, causing it to flow to the electron transport layer to release the residual stress to attain improved electron extraction. Consequently, the device efficiency is increased to 24.38%, where its V of 1.184 V is among the best for the formamidine-based perovskite solar cells. Furthermore, the ambient stability (93.0% of initial efficiency after 2000 h of aging) and light stability (96.3% of initial efficiency after 500 h of aging) are much improved. This work conceives a new engineering of additive phase transition for high-performance perovskite solar cells.

关键词： crystallization retardation dynamic liquid-crystal transitions high efficiency and stability interfacial healing perovskite solar cells

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Electron-Phonon Coupling Suppression by Enhanced Lattice Rigidity in 2D Perovskite Single Crystals for High-Performance X-Ray Detection

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advanced materials (Deerfield Beach, Fla.) 2023年第7期35卷 e2208875页

作者： Bobo Zhang Tao Zheng Jiaxue You Chuang Ma Yucheng Liu Lu Zhang Jun Xi Guohua Dong Ming Liu Shengzhong Frank Liu Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology International Joint Research Center of Shaanxi Province for Photoelectric Materials Science Institute for Advanced Energy Materials School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 China. State Key Laboratory of Solidification Processing Northwestern Polytechnical University Xi'an 710072 China. Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Lab of Information Photonic Technique School of Electronic Science and Engineering Xi'an Jiaotong University No. 28 Xianning West Road Xi'an 710049 China. The Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education & International Center for Dielectric Research School of Electronic Science and Engineering State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an 710049 China. Dalian National Laboratory for Clean Energy iChEM Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China. University of the Chinese Academy of Sciences Beijing 100039 China.

2D Dion-Jacobson (DJ) perovskite single crystals (PSCs) usually demonstrate better X-ray detection performance than Ruddlesden-Popper (RP) PSCs. However, the mechanism of the improved performance is still elusive. Here, by the aid of strong interactions between dimethylbiguanide (DGA) and PbI , a novel DJ-perovskitoid (DGA)PbI is designed. From the comparison of (DGA)PbI to other 2D PSCs, it is discovered that the tiniest lattice distortion and increased hydrogen bonds in the atom-scaled analysis strengthen lattice rigidity and weaken electron-phonon coupling to suppress disordered scattering of carriers, resulting in significantly improved carrier transport and stability. Therefore, high carrier mobility (78.1 cm V s ) and a pronounced sensitivity of 4869.0 µC Gy cm are achieved using (DGA)PbI , which are the best in 2D Pb-based PSC devices to date. Finally, the (DGA)PbI devices exhibit good spatial resolution in X-ray imaging and excellent long-term stability to work as a promising candidate for medical diagnostics and nondestructive determination.

关键词： 2D perovskite X-ray detection electron-phonon coupling high sensitivity lattice rigidity

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One-Step Approach for Constructing High-Density Single-Atom Catalysts toward Overall Water Splitting at Industrial Current Densities

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Angewandte Chemie 2022年第9期135卷

作者： Dr. Dong Cao Dr. Zhirong Zhang Yahui Cui Runhao Zhang Prof. Lipeng Zhang Prof. Jie Zeng Prof. Daojian Cheng State Key Laboratory of Organic-Inorganic Composites and Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beijing 100029 P. R. China School of Chemistry & Chemical Engineering Anhui University of Technology Ma'anshan Anhui 243002 P. R. China Hefei National Laboratory for Physical Sciences at the Microscale Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes Department of Chemical Physics University of Science and Technology of China Hefei Anhui 230026 P. R. China

The construction of highly active, durable, and cost-effective catalysts is urgently needed for green hydrogen production. Herein, catalysts consisting of high-density Pt (24 atoms nm −2 ) and Ir (32 atoms nm −2 ) single atoms anchored on Co(OH) 2 were constructed by a facile one-step approach. Remarkably, Pt 1 /Co(OH) 2 and Ir 1 /Co(OH) 2 only required 4 and 178 mV at 10 mA cm −2 for hydrogen evolution reaction and oxygen evolution reaction, respectively. Moreover, the assembled Pt 1 /Co(OH) 2 //Ir 1 /Co(OH) 2 system showed mass activity of 4.9 A mg noble metal −1 at 2.0 V in an alkaline water electrolyzer, which is 316.1 times higher than that of Pt/C//IrO 2 . Mechanistic studies revealed that reconstructed Ir−O 6 single atoms and remodeled Pt triple-atom sites enhanced the occupancy of Ir−O bonding orbitals and improved the occupation of Pt−H antibonding orbital, respectively, contributing to the formation of the O−O bond and the desorption of hydrogen. This one-step approach was also generalized to fabricate other 20 single-atom catalysts.

关键词： Hydrogen Evolution Reaction Oxygen Evolution Reaction Reaction Mechanisms Single-Atom Catalysts

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