Article
Chemistry, Physical
Yongxia Wang, Nengneng Xu, Ruinan He, Luwei Peng, Dongqing Cai, Jinli Qiao
Summary: Controllable tailoring of carbon-based metal-free catalysts to boost bifunctional performance of oxygen electrode is challenging but promising. The NSP-Gra, fabricated through wet ball-milling induced defect assisted in-situ pyrolysis, demonstrates superior catalytic activity and high power density in Zn-air batteries, attributed to fast charge transport capability and rich active sites introduced by multi-heteroatom dopants.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Review
Chemistry, Multidisciplinary
Haiyang Chang, Shanshan Cong, Lei Wang, Cheng Wang
Summary: Zinc-air batteries have great potential in the field of power batteries, and alternative non-precious metal catalysts are crucial for their development. Recent progress in transition metal-based electrocatalysts and hybrid electrochemical storage technologies provide new insights into improving the efficiency of zinc-air batteries. The challenges and research trends for future development are also discussed.
Article
Electrochemistry
Kaur Muuli, Xiang Lyu, Marek Mooste, Maike Kaarik, Barr Zulevi, Jaan Leis, Haoran Yu, David A. Cullen, Alexey Serov, Kaido Tammeveski
Summary: In this study, Fe-N-C catalysts were prepared at a kilogram scale using the commercial VariPoreTM method, and the effect of synthesis conditions on the catalyst performance at ZAB air electrode was investigated. The results showed that the PA-450-HT catalyst exhibited excellent electrocatalytic activity for the oxygen reduction reaction (ORR) and was the most suitable catalyst for primary ZAB, with a galvanostatic polarization discharge peak power density of 149 mW cm-2, outperforming commercial Pt-Ru/C catalysts. Additionally, the NCB-600-HT catalyst displayed outstanding ORR and OER reversibility, with a half-wave potential of 0.87 V vs. RHE and a Delta E value of 0.81 V, and exhibited excellent charge-discharge cycling durability similar to NCB-550-LT for the secondary ZAB. This study reported for the first time the mass production of outstanding bifunctional Fe-N-C catalysts for rechargeable ZAB.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Wenhao Tang, Boya Li, Kewei Teng, Xiaodong Wang, Ruiping Liu, Mengwei Wu, Lei Zhang, Pengfei Ren, Junqing Zhang, Ming Feng
Summary: This review focuses on the sluggish reaction kinetics at the oxygen cathode in metal-air batteries, which is a major obstacle to their commercialization. The use of noble-metal electrocatalysts has been a potential solution, but their high cost and scarcity hinder their widespread application. The review discusses the mechanisms of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), proposes principles for bifunctional electrocatalysts, and presents state-of-the-art catalysts based on carbon and transition-metal materials. Additionally, it explores self-supporting 3D noble-metal-free bifunctional ORR/OER catalysts and provides perspectives on the future development of bifunctional electrocatalysts.
JOURNAL OF MATERIOMICS
(2022)
Article
Nanoscience & Nanotechnology
Liang Gao, Shengming Chang, Zhongyi Zhang
Summary: The novel composite catalyst CoFeP@C with highly efficient bifunctional performance for catalyzing OER and ORR is ideal for rechargeable Zn-air batteries. The liquid Zn-air battery shows a large power density and stable charge and discharge cycles, while the solid-state Zn-air battery demonstrates stable operation for a duration of time. This work has advanced the understanding of synergistic catalysis and paved the way for high-performance bifunctional catalysts.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Zheng Yang, Jingxia Gao, Ping Zhu, Xinsheng Zhao, Guoxiang Wang, Sa Liu
Summary: This study introduces a type of S,N co-doped mesoporous carbon hybrids decorated with encapsulated cobalt sulfide nanoparticles, which exhibits excellent electrocatalytic activities due to the synergistic effect between the Co(x)S(y) nanoparticles and graphitic-carbon matrices. The hybrid shows superior performance in both oxygen reduction and oxygen evolution, providing a potential option for air-electrode catalysts in advanced Zn-air batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Haiyang Chang, Zhijian Liang, Kun Lang, Jiahui Fan, Lei Ji, Kejian Yang, Shaolin Lu, Zetong Ma, Lei Wang, Cheng Wang
Summary: Electrocatalytic water splitting is crucial for efficient energy conversion from electrical to hydrogen energy. In this study, CNT composites modified with CoP-V4P3 composites were synthesized and shown to have excellent electrocatalytic activity in both hydrogen evolution and oxygen evolution reactions. The unique electronic and hollow carbon nanotube structure of the catalyst effectively increased the catalytic active sites and stability. This work provides guidance for the design and synthesis of high-performance non-precious metal electrocatalysts and promotes the commercial application of electrochemical water splitting.
Review
Chemistry, Physical
Ting He, Bingzhe Yu, Yi Zhang, Xiaoping Ouyang, Shaowei Chen
Summary: Designing and engineering effective bifunctional electro-catalysts for the ORR and OER is crucial for the development of rechargeable metal-air batteries as a sustainable energy technology. Metal-based nanocomposites dispersed within carbon scaffolds have emerged as viable alternatives to conventional precious metal-based electrocatalysts. This review summarizes the latest progress in the synthesis and bifunctional performances of carbon-based nanocomposite catalysts with single and dual metal sites, and discusses the challenges and opportunities for further innovation in this field.
CURRENT OPINION IN ELECTROCHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Fengjiao Li, Naveed Mushtaq, Tong Su, Yanhui Cui, Jiajia Huang, Mingjuan Sun, Manish Singh, Xiaolin Zhao, Kristina Maliutina, Yu Zhang, Chuanxin He, Ming Yang, Bin Zhu, Liangdong Fan
Summary: In this study, a unique hybrid catalyst composed of nitrogen-doped carbon nanotube (NCNT) grown on La0.8Sr0.2Ti0.65Fe0.35O3-delta perovskite oxide (LSTFO/NCNT) was developed as a bifunctional ORR and OER electrocatalyst for zinc-air batteries. The optimized LSTFO/NCNT hybrid exhibited outstanding bifunctional oxygen electrocatalysis performances with a characteristic potential gap (Delta E) of 0.76 V. The homemade zinc-air batteries using LSTFO/NCNT as an air electrode catalyst demonstrated reliable electrochemical performances with high peak power density and cycling stability, achieving a final round-trip efficiency of 62.8% at 10 mA cm(-2) during 123 cycles.
MATERIALS TODAY NANO
(2023)
Article
Chemistry, Physical
Jiameng Liu, Changbao Wang, Yingpan Song, Shuai Zhang, Zhihong Zhang, Linghao He, Miao Du
Summary: A metal-free carbon catalyst, MCAC, prepared by hydrogen bonding assembly, showed excellent bifunctional electrocatalytic performance for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR), paving the way for the research of metal-free electrocatalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Zakiullah Kamlesh, Zakiullah Zaidi, Manish Mudgal, Avanish Kumar Srivastava, Archana Singh
Summary: This study demonstrates a strategy for using electronic waste from nickel-metal hydride batteries as bifunctional electrocatalyst materials for the oxygen evolution reaction and hydrogen evolution reaction. The recycled steel-based electrodes show higher activity than commercial catalysts and have the potential for the development of economical and efficient electrodes from waste.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Hongtian Mi, Leyuan Li, Chuitao Zeng, Yuhong Jin, Qianqian Zhang, Kailing Zhou, Jingbing Liu, Hao Wang
Summary: A phosphorus-doped transition metal selenide/carbon composite catalyst (P-CoSe2/C@CC) with excellent electrochemical performance is obtained from metal-organic frameworks through a simple solvothermal process. The catalyst exhibits low overpotential for the oxygen evolution reaction and a clear reduction peak for the oxygen reduction reaction, showing great potential for application in zinc-air batteries.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Review
Chemistry, Physical
Yogesh Kumar, Marek Mooste, Kaido Tammeveski
Summary: Rechargeable zinc-air battery (RZAB) is a promising energy-storage device for renewable energy economy, but practical application is limited by various challenges, mainly the sluggish reaction kinetics of ORR and OER. Non-precious metal catalysts have shown great potential for oxygen-involved electrocatalysis compared to noble metal-based catalyst materials. This article reviews the recent advancements in transition metal-based bifunctional electrocatalysts and outlines the conclusion and future perspectives for RZAB application.
CURRENT OPINION IN ELECTROCHEMISTRY
(2023)
Article
Green & Sustainable Science & Technology
Sakthinarayanan Jayaraman, Selvarasu Uthayanila, Chandrakasan Vanmathi, Parasuraman Karthikeyan
Summary: The current study demonstrates the synthesis of secondary alcohol from ketone using BIL as a homogeneous catalyst, under solvent-free and harsh reaction conditions. Isopropanol was found to be an effective catalyst for clean reduction of ketone to secondary alcohols. The use of ionic liquids as catalysts showed high activity, selectivity, and recyclability.
MATERIALS TODAY SUSTAINABILITY
(2022)
Article
Engineering, Environmental
Xiangsi Wu, Zhiqiang Zhang, Caimei He, Yanhao Shen, Xianwen Wu, Hongqiang Wang, Zhaoling Ma, Qingyu Li
Summary: This study presents a method to prepare mixed-valence cobalt oxide with regulatable ratio by introducing air at a certain temperature. The resulting nanosphere-shaped material shows multiple heterointerfaces and rich oxygen vacancies, exhibiting exceptional oxygen reduction reaction and oxygen evolution reaction activity. This material also performs well in zinc-air batteries and magnesium-air batteries, with excellent electrochemical performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Minghang Jiang, Linkai Han, Peng Peng, Yi Hu, Yan Xiong, Chunxia Mi, Zuoxiu Tie, Zhonghua Xiang, Zhong Jin
Summary: The study presents a pyrolysis-free approach to incorporate ordered quasi-phthalocyanine N-coordinated transition metal centers into a 2D covalent organic framework for enhanced NRR performance. Among the Ti, Cu, and Co variants, Ti-COF exhibited superior NRR activity due to its ability to activate N-2 molecules and suppress HER. This work demonstrates the potential of 2D-COF materials with coordinated transition metal centers for efficient electrocatalytic NRR.
Article
Chemistry, Applied
Qingbin Liu, Li Xu, Shizhen Liu, Zhonghua Xiang
Summary: The hierarchically porous Fe-N-C structure prepared using a binary ligand strategy shows excellent durability and high current retention, outperforming benchmark catalysts. The catalyst also demonstrates a promising maximum power density in proton exchange membrane fuel cells, indicating significant implications for various electrochemical reactions.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Xianshu Cai, Yue Zhao, Jun Zhang, Wenwen Zi, Shuo Tao, Feng Jiao, Hongbin Du
Summary: In this study, the synthesis of pure silica and aluminosilicate large-pore zeolites using an organic structure-directing agent (OSDA) was reported. These zeolites exhibited excellent acid and hydrothermal stabilities, and showed potential for size-selective catalytic applications.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Xueli Li, Di Liu, Qingbin Liu, Zhonghua Xiang
Summary: A bifunctional oxygen catalyst is developed via a pyrolysis-free approach based on closed pi-conjugated covalent organic polymers (COPs). The catalyst possesses precise configuration and high repeatability, allowing large-scale production. It exhibits high bifunctional activity and long cycle stability even after scale synthesis, surpassing conventional pyrolytic M-N-C catalysts.
Article
Chemistry, Applied
Yiming Leng, Bolong Yang, Yun Zhao, Zhonghua Xiang
Summary: In this study, fluorinated iron and cobalt bimetallic nanoparticles were successfully prepared on nitrogen-doped carbon nanofibers, leading to improved activity and stability of non-precious metal electrocatalyst. The fluorination increased the charge density of the bimetallic catalyst and showed remarkable catalytic performance under acidic conditions.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Bolong Yang, Qing Han, Linkai Han, Yiming Leng, Thomas O'Carroll, Xiaoxuan Yang, Gang Wu, Zhonghua Xiang
Summary: Nitrogen-coordinated single-cobalt-atom electrocatalysts have emerged as a new frontier in the design of oxygen reduction cathodes in polymer electrolyte fuel cells. This study demonstrates the direct preparation of a highly stable cross-linked nanofiber electrode with atomic Co active sites fully dispersed on the catalyst surface.
ADVANCED MATERIALS
(2023)
Article
Engineering, Chemical
Yun Zhao, Xiaogang Yu, Xin Wen, Yong Luo, Zhonghua Xiang, Jian-feng Chen
Summary: The scale-up synthesis of covalent organic frameworks (COFs) with uniform structure and properties is achieved using high-gravity intensified synthesis. The formation of COFBTC is improved synergically by alcoholic solvent and basic catalyst. High concentration and reaction temperature are beneficial for high production. The intensified mass and heat transfer at high-gravity promotes the scaling-up of COFBTC with homogeneous structures and properties.
Review
Chemistry, Physical
Bolong Yang, Bingjie Li, Zhonghua Xiang
Summary: Metal-organic frameworks (MOFs) have gained significant attention for their diverse structures, favorable porous properties, and tunable chemical compositions. In the field of electrochemical energy storage and conversion, MOF-based materials play a crucial role due to their ability to regulate chemical composition at the molecular level and their highly porous frameworks for facilitating mass and charge transfer. This review discusses the strategies for designing targeted MOF-based materials and their potential applications in supercapacitors and electrocatalytic oxygen reduction reaction (ORR).
Article
Chemistry, Multidisciplinary
Xueli Li, Tengge Chen, Bolong Yang, Zhonghua Xiang
Summary: The traditional pyrolysis method leading to structural diversity of active sites hinders our understanding of the local coordination environment and its effects on the performance of the oxygen reduction reaction (ORR). We utilized covalent organic polymers (COPs) to define a series of FeN4 active-site configurations via a pyrolysis-free approach. Our results indicate a higher positive charge on iron atoms near an electron-withdrawing side-chain, achieved through dz2 orbital tuning in a COPBTC@Cl-CNTs catalyst, resulting in a high-valence configuration (FeH+N4). We introduced a new descriptor, xi, as the band center of iron atoms projected on the 3dz2 orbital to quantitively explain a volcano-like regulation mechanism. The catalytic performance of the COPBTC@Cl-CNTs electrocatalyst is optimized when xi is distributed between -1.887 and -1.862 eV.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nanoscience & Nanotechnology
Bolong Yang, Haifeng Yu, Xudong Jia, Qian Cheng, Yaoliang Ren, Bing He, Zhonghua Xiang
Summary: By constructing Fe-Ce atomic pairs, the adsorption structure is changed and the linear relationship between catalytic activity and adsorption energy of reaction intermediates based on single-metal sites is broken, leading to excellent oxygen reduction reaction (ORR) performances of the FeCe-SAD/HPNC catalyst.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Chunxia Mi, Haifeng Yu, Linkai Han, Lirong Zhang, Lingling Zhai, Xueli Li, Yujia Liu, Zhonghua Xiang
Summary: A two-dimensional covalent organic polymer catalyst with well-defined four-nitrogen coordination structure is developed through a pyrolysis-free strategy. The catalyst exhibits excellent activity for oxygen electrocatalysis by balancing the charge environment and regulating the adsorption of oxygen species. Zn-air batteries assembled with this catalyst show stable high power density.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shuo Tao, Lei Wang, Zhili Wang, Xiaolei Li, Xue Li, Yujie Wang, Bo Wang, Wenwen Zi, Ying Wei, Kuizhi Chen, Zhijian Tian, Guangjin Hou
Summary: Due to the interest in applications of zeolitic materials and challenges associated with traditional synthesis methods, a new synthesis approach for aluminophosphate (AlPO) zeotypes has been developed. By calcinating amorphous precursors at moderate temperatures and short reaction times, highly crystalline AlPO zeotypes with various topologies have been successfully synthesized. Multinuclear multidimensional solid-state NMR techniques combined with complementary characterizations reveal the catalytic role of fluoride and the directing role of organic structure-directing agents in the synthesis process. This novel synthesis strategy not only shows excellent efficiency, but also sheds new light on the crystallization mechanism of zeolitic materials.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Linkai Han, Haifeng Yu, Zhonghua Xiang
Summary: Transition metal-nitrogen-carbon materials with asymmetric MN4 sites based on the 3-s-triazine of g-C3N4 are proposed as promising catalysts for oxygen evolution reaction (OER). Compared to symmetric active sites, the asymmetric MN4 sites directly modulate the oxygen species adsorption, leading to higher OER intrinsic activity. In Silico screening suggests that cobalt has the best OER activity among familiar nonprecious transition metals. Experimental results show that the intrinsic activity of asymmetric active sites is enhanced by 48.4% compared to the symmetric ones, and a-CoN4@NC exhibits excellent activity as an OER catalyst in an alkaline water electrolyzer device.
Article
Engineering, Chemical
Bolong Yang, Xiaogang Yu, Jingkui Hou, Zhonghua Xiang
Summary: Based on the volcanic relationship between catalytic activity and key adsorption energies, Pt-Co alloys have been extensively studied as cathode oxygen reduction reaction catalysts in proton exchange membrane fuel cells. However, balancing the alloying degree and ORR performance of Pt-Co catalyst remains a great challenge.
Article
Multidisciplinary Sciences
Linjie Zhao, Qifeng Cai, Baoguang Mao, Junjie Mao, Hui Dong, Zhonghua Xiang, Jia Zhu, Rajib Paul, Dan Wang, Yongde Long, Liangti Qu, Riqing Yan, Liming Dai, Chuangang Hu
Summary: A molecular design and carbon dot confinement coupling strategy is proposed for the synthesis of dual-metal-atom sites in carbon dots (DMASs-CDs) through the pyrolysis of a bimetallic complex. Successful synthesis of various DMASs-CDs with specific dual-metal compositions has been achieved, and NiMn-CDs show high intrinsic activity for urea oxidation.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Chemistry, Physical
Sirinya Ukasi, Paritta Jutapukti, Chiranicha Ninthub, Nattapong Pinpru, Phakkhananan Pakawanit, Wanwilai Vittayakorn, Satana Pongampai, Naratip Vittayakorn, Thitirat Charoonsuk
Summary: This study explores the enhancement of electrical output of flexible hybrid piezoelectric-triboelectric nanogenerators by incorporating gamma-glycine into fully organic composites. The research demonstrates the importance of optimized concentrations of gamma-glycine and chitosan in achieving superior performance. The study identifies the critical content of gamma-glycine that leads to the highest output signal, and provides theoretical explanations for this observation.
Article
Chemistry, Physical
Yoonsang Ra, Yu-seop Kim, Seonmo Yang, Namgyu Kang, Gyuwon Oh, Chungyeon Cho, Sangmin Lee, Dongwhi Choi
Summary: In this study, a portable energy harvester (STEP) was proposed to drive various functional LEDs using biomechanical energy. The roles and functionalities of a triboelectric nanogenerator (TENG) and electromagnetic generator (EMG) in the hybrid energy harvester were experimentally demonstrated, and the necessity of hybridization for LED-involved devices was described. The STEP showed promising potential as an effective energy supply strategy for various functional LEDs in related industries.
Article
Chemistry, Physical
Dae Sol Kong, Kyung Hoon Kim, Ying Chieh Hu, Jong Hun Kim, Inseo Kim, Jeongwan Lee, Joonhyuk Lee, Won Hyuk Shon, Hanjin Yoo, Chul-Un Ro, Seungsu Lee, Hyoungjeen Jeen, Minbaek Lee, Minseok Choi, Jong Hoon Jung
Summary: With the rapid development of the Internet of Things and artificial intelligence, smart home has emerged to fulfill the security, convenience, and energy-saving issues of modern life. A flexoelectric mica crystal is used to augment the finger touch-driven triboelectric output for operating a wireless and multichannel smart home controller. This work provides important ingredients for enhancing triboelectric output and realizing a convenient, multifunctional, cost-effective, and adaptable smart home control system without batteries.
Article
Chemistry, Physical
Yi Han, Fang Wu, Xiaozhen Du, Zihao Li, Haixiang Chen, Dongxing Guo, Junlei Wang, Hong Yu
Summary: This paper presents a novel type of triboelectric nanogenerator that utilizes wind energy, with a Y-type bluff body to enhance vibration and output power. The application of this generator successfully provides power for a wireless temperature and humidity sensor.
Article
Chemistry, Physical
Wen Zhang, Fangyuan Cheng, Miao Chang, Yue Xu, Yuyu Li, Shixiong Sun, Liang Wang, Leimin Xu, Qing Li, Chun Fang, Meng Wang, Yuhao Lu, Jiantao Han, Yunhui Huang
Summary: This study successfully induced the formation of a uniform and robust CEI by constructing ZrO2 nano-rivets on the surface of LCO, stabilizing the surface of high-voltage LCO and facilitating lithium-ion diffusion.
Article
Chemistry, Physical
Karl P. Olson, Laurence D. Marks
Summary: This paper investigates the role of contacting shapes in triboelectricity and provides scaling rules for designing energy harvesting devices.
Article
Chemistry, Physical
Jong-An Choi, Jingu Jeong, Mingyu Kang, Hee-Jin Ko, Taehoon Kim, Keun Park, Jongbaeg Kim, Soonjae Pyo
Summary: Wind-driven triboelectric nanogenerators (WTENGs) are a promising emerging technology for sustainable wind energy harvesting, offering high output performance, lightweight design, and compact dimensions. This study introduces an innovative WTENG design that leverages a rolling-based mechanism to achieve efficient omnidirectional wind energy harvesting.
Article
Chemistry, Physical
Liwei Dong, Qian Tang, Chaoyang Zhao, Guobiao Hu, Shuai Qu, Zicheng Liu, Yaowen Yang
Summary: This paper proposes a novel hybrid scheme for flag-type nanogenerators (FNGs) that enhances their performance and broadens their operational wind speed ranges by harnessing the synergistic potential of two aerodynamic behaviors. The proposed flag-type triboelectric-piezoelectric hybrid nanogenerator (FTPNG) integrates flapping piezoelectric flags (PEFs) and a fluttering triboelectric flag (TEF). The FTPNG achieves significant power generation and a broad wind speed range, surpassing other FNGs, making it suitable for various self-powered systems and Internet of Things applications.
Review
Chemistry, Physical
Yunmeng Li, Xin Liu, Zewei Ren, Jianjun Luo, Chi Zhang, Changyong (Chase) Cao, Hua Yuan, Yaokun Pang
Summary: The demand for green and eco-friendly materials is growing due to increasing environmental concerns related to traditional petroleum-based products. Marine biomaterials have emerged as a promising alternative, thanks to their abundant availability, biocompatibility, biodegradability, and low toxicity. In this review, we discuss the development and applications of triboelectric nanogenerators (TENGs) based on marine biomaterials. The operational modes, foundational principles, intrinsic qualities, and advantages of marine biomaterials commonly used in TENG designs are highlighted. Approaches to enhance the efficacy of TENGs derived from marine biomaterials are also discussed, along with documented applications from existing literature. Furthermore, the existing challenges and future directions in marine biomaterial-inspired TENGs are explored.
Article
Chemistry, Physical
Matthew P. Wells, Adam J. Lovett, Yizhi Zhang, Zhongxia Shang, Kosova Kreka, Babak Bakhit, Haiyan Wang, Albert Tarancon, Judith L. MacManus-Driscoll
Summary: Reversible solid oxide cells (rSOCs) offer a promising solution to efficient energy conversion, but have been limited in portable power and electrolysis applications due to excessive polarisation resistance of the oxygen electrode at low temperatures. This study demonstrates the growth of symmetric and complete rSOC structures with reduced polarisation resistance by tuning oxygen vacancy through annealing, providing a promising route towards high-performance rSOC devices for portable power applications.
Article
Chemistry, Physical
Kangkang Bao, Minghui Wang, Yue Zheng, Panpan Wang, Liwen Yang, Yang Jin, Hui Wu, Bin Sun
Summary: This study utilizes ethanol as an electrolyte additive to modulate the migration of zinc ions and the surface structure of zinc anodes, resulting in improved capacity retention and cycle life of zinc-based aqueous batteries.
Article
Chemistry, Physical
Haichao Yang, Wensi Cai, Ming Wang, Saif M. H. Qaid, Zhiyuan Xu, Huaxin Wang
Summary: The introduction of sodium alginate (SA) into perovskite solar cells improves the carrier dynamics, stability, and performance by inhibiting nonradiative recombination and retarded charge dynamics.
Article
Chemistry, Physical
Cuirong Zhang, Mingyuan Wei, Zihan Chen, Wansheng Lin, Shifan Yu, Yijing Xu, Chao Wei, Jinwei Zhang, Ziquan Guo, Yuanjin Zheng, Qingliang Liao, Xinqin Liao, Zhong Chen
Summary: Artificial Intelligence of Things (AIoT) aims to establish smart and informative interactions between humans and devices. However, common pixelated sensing arrays in AIoT applications present problems such as hard and brittle devices, complex structures, and low precision. This article introduces an innovative solution called the all-in-one intelligent semitransparent interactive nerve patch (AISI nerve patch), which integrates sensing, recognition, and transmission functionalities into a thin and flexible patch. The AISI nerve patch is semitransparent, allowing for accurate identification without affecting aesthetics, and it can be attached to any curved surface for intelligent and interactive applications. With rapid response time and high precision recognition, it enables the integration of artificial intelligence and achieves high recognition accuracy for further development of AIoT.
Article
Chemistry, Physical
Youcun Bai, Heng Zhang, Huijun Song, Chong Zhu, Lijin Yan, Qin Hu, Chang Ming Li
Summary: A novel stainless-steel supported lattice-mismatched V-S-Se layered compound with high selenium vacancy was synthesized by adjusting the molar ratio of sulfur to selenium. The introduction of selenium vacancies created additional redox peaks of sulfur, providing more mass transport channels and active sites for zinc ions. The specific capacity and cycle stability of the electrode were significantly improved, demonstrating great potential for practical applications and providing insights into the effects of defects on battery performance.
Article
Chemistry, Physical
Yao Xiao, Puxian Xiong, Yakun Le, Zhenjie Lun, Kang Chen, Zhiduo Wang, Peishan Shao, Zhicong Chen, Dongdan Chen, Zhongmin Yang
Summary: This study successfully synthesized a material with multi-stimulus-responsive luminescence and confirmed the internal relationship between luminescence and defects by regulating the distribution and depth of defects. The dynamic process of multi-stimulus-responsive luminescence was validated by experimental and calculation results.
