Article
Chemistry, Physical
Yuhua Wei, Haicai Huang, Feng Gao, Gang Jiang
Summary: In this work, nickel boride and nickel carbide monolayers with highly efficient catalytic performance towards oxygen evolution and oxygen reduction reactions were reported. The density functional theory calculations showed that the random combination of Ni atom with B and C atoms formed catalytically active double sites, leading to a remarkable reduction of the energy barrier. The superior bifunctional or even multifunctional catalytic performance is mainly attributed to the electron donation from Ni metal atoms and the synergistic effect of B/C atoms.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Environmental
Jing Li, Fan Yang, Min Jiang, Xiyang Cai, Qiaodan Hu, Junliang Zhang
Summary: The development of perovskite-type electrocatalysts with high activity, excellent durability, and affordable cost is important for promoting clean energy technologies. In this study, Bi(0.15)Sr(0.85)Co(1-x)FexO(3-delta) (x=0.2, 0.4, 0.6, 0.8, 1) perovskite materials were prepared and their OER electrocatalytic activity and durability were investigated. The results showed that the composition BiSC0.8F0.2 exhibited impressive electrocatalytic performances with low overpotential and excellent long-time durability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Xiaofeng Zhang, Jiannan Cai, Yanzhu Ye, Yuande Shi, Shen Lin
Summary: This paper presents a highly efficient non-noble metal oxide catalyst prepared by interface engineering technology, exhibiting excellent activity for oxygen reduction and oxygen evolution reactions. The superior performance of the catalyst is attributed to the heterostructure and oxygen vacancies, which promote rapid electron transfer and create more active sites. Additionally, the self-generated N-doped carbon provides high conductivity for the catalyst.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Jing Jiang, Hui Su, Shaojia Song, Weilong Liu, Ning Li, Yangqin Gao, Lei Ge
Summary: Given the current shortage of resources and environmental pollution, the rational design and development of low-cost and high-efficiency bifunctional electrocatalysts is crucial. Element doping is recognized as an effective strategy to enhance electrocatalytic activity by adjusting microstructure, morphology, and electronic structure. This study presents the rational design and synthesis of 3D flower-like W-doped FeNi2S4/Ni3S2/NF heterojunctions as effective bifunctional electrocatalysts for overall water splitting.
Article
Chemistry, Physical
Debanjali Ghosh, Mopidevi Manikanta Kumar, C. Retna Raj, Debabrata Pradhan
Summary: In this study, CeO2 nanospheres embedded in NiO nanoflakes were synthesized and demonstrated to have bifunctional activity for the oxygen evolution reaction and oxygen reduction reaction (OER/ORR). The CeO2/NiO-2 nanocomposite showed outstanding OER/ORR activity and stability compared to other compositions and benchmark catalysts. The unique morphology of CeO2 nanospheres embedded in NiO nanoflakes facilitated the exposure of active sites with the bifunctional nature of the catalyst. The electronic synergy between CeO2 and NiO contributed to the formation of oxygen vacancy defects and accessible active sites.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Kinjal B. Patel, Bhavesh Parmar, Krishnan Ravi, Rajesh Patidar, Gopala Ram Bhadu, Jayesh C. Chaudhari, Divesh N. Srivastava
Summary: This research develops an efficient bifunctional electrocatalyst for both hydrogen and oxygen reactions. Through simple pyrolysis of a nickel-based metal organic framework at temperatures of 600, 700, and 800 ℃, three bifunctional electrocatalysts, Ni@NCS-600, Ni@NCS-700, and Ni@NCS-800, were prepared. Among them, Ni@NCS-800 exhibits extremely low overpotential and shows high catalytic activity comparable to precious state-of-the-art catalysts (RuO2 and Pt/C).
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Nathalie Vonrueti, Reshma Rao, Livia Giordano, Yang Shao-Horn, Ulrich Aschauer
Summary: According to conventional understanding, the oxygen evolution reaction on metal oxide surfaces involves multiple steps. However, recently proposed alternative reaction mechanisms with lower overpotentials often neglect non-electrochemical steps. Our study shows that exothermic non-electrochemical steps can also affect the thermodynamic overpotential, providing new insights into the reaction mechanisms.
Article
Chemistry, Physical
Jingxuan Zheng, Dapeng Meng, Junxin Guo, Zhao Wang
Summary: In this study, a sulfur-vacancy enriched CuCo2O4/CuCo2S4 heterostructure was successfully prepared using cold plasma, and in-situ etching of oxide overlayers on the catalyst surface was achieved. The results reveal that decreasing the concentration of oxide overlayers can increase the number of ORR electrons transferred and decrease the OER overpotential.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Shaqi Fu, Yiran Ma, Xuechun Yang, Xuan Yao, Zheng Jiao, Lingli Cheng, Pandeng Zhao
Summary: This study aimed to optimize the electronic structure and explore the intrinsic mechanism of excellent electrocatalytic performance through constructing a defective heterojunction. By introducing Fe delta+ through the cation exchange method and calcination, an n-n heterojunction with oxygen vacancies at the Fe2O3 and ZnCo2O4 biphasic interface was constructed. The obtained electrode for oxygen evolution reaction (OER) showed remarkably low overpotential and excellent stability. Density functional theory calculations confirmed that the heterojunction improved the adsorption of active centers, optimizing the Gibbs free energy of the OER.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Xuebin Hou, Kaifeng Xie, Zelong Huang, Chen Shi, Qufu Wei, Yi Hu
Summary: MoS2@Co9S8/C composite nanofibers with a blossom branch distributed structure were prepared via a facile method, and the close mutual combination between MoS2 and Co9S8 enhances the synergistic effect of the heterointerface, improving the catalytic reaction. The composite nanofibers exhibit high activity toward hydrogen and oxygen evolution reactions, providing a facile strategy for designing a heterostructure with close mutual heterogeneous combination and without aggregation.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Abdul Hanan, Muhammad Nazim Lakhan, Dong Shu, Altaf Hussain, Mukhtiar Ahmed, Vinod Kumar, Dianxue Cao, Irfan Ali Soomro
Summary: This study focuses on a new type of electrocatalyst, which combines cobalt ferrite oxide (Co2FeO4) and palladium oxide (PdO) nanostructures prepared through hydrothermal and ultraviolet (UV) irradiation techniques. This catalyst exhibits excellent electrocatalytic performance for water splitting in alkaline medium, with high concentration of active sites, improved electrical conductivity, and stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Huiyong Huang, Anmin Liu, Qiaoling Kang, Xinyu Ye, Hanlin Chen, Wei-Nien Su, Tingli Ma
Summary: This study reports a novel synthesis method for vanadium-doped CoS/Co9S8 heterostructures embedded on carbon nanorods, which exhibit excellent OER catalytic performance and comparable ORR catalytic performance. Additionally, the assembled rechargeable Zn-air batteries show superior performance and high cycling stability.
MATERIALS TODAY ENERGY
(2022)
Article
Chemistry, Multidisciplinary
G. Yasin, S. Ibraheem, S. Ali, M. Arif, S. Ibrahim, R. Iqbal, A. Kumar, M. Tabish, M. A. Mushtaq, A. Saad, H. Xu, W. Zhao
Summary: A facile tempted-defects assisted fractionation strategy was presented to synthesize N, S, and O tri-doped metal-free catalyst (DETDAP), which exhibits excellent bifunctional catalytic activity with low overpotential towards both the OER and HER. The tailored defects in tri-doped interlinking were found to enhance the bifunctional catalytic performance, providing a perceptive understanding of the synergetic principles of heteroatom-interlinking-tailoring nanostructures in water splitting.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Physical
Fatih Ahmet Celik
Summary: The hydrogen adsorption and storage behavior of lithium-decorated PdS2 monolayer at nanosize was investigated using extended tight-binding method based on density functional theory. The calculation results showed that the average adsorption energies of 1-5H2 decreased with increasing number of adsorbed hydrogen molecules. The Li-decorated PdS2 monolayer with 12Li atom and 60H2 molecules exhibited a gravimetric density of about 6.98 wt% for hydrogen storage, suggesting its potential application in hydrogen storage. The polarization effect between Pd and H2 was found to influence the adsorption behavior.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Chandra Prakash, Priyambada Sahoo, Ramesh Yadav, Akhilesh Pandey, Vijay K. Singh, Ambesh Dixit
Summary: Developing an efficient and inexpensive electrocatalyst is crucial for the green hydrogen economy. The study demonstrates a large-scale, industrially viable synthesis of Zn-doped NiS electrocatalyst on nickel foam through a hydrothermal technique. The catalyst shows excellent catalytic efficacy for both oxygen and hydrogen evolution reactions, with low overpotentials.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
P. Tsuppayakorn-aek, T. Bovornratanaraks, R. Ahuja, W. Luo, K. Kotmool
Summary: In this study, the phase stability of the hydrogenated Ti2C MXene monolayer was investigated using an evolutionary algorithm based on density functional theory. The existence of hexagonal Ti2CH, Ti2CH2, and Ti2CH4 was predicted and their dynamic and energetic stabilities were analyzed. The electron-phonon coupling and the corresponding T-c values were also studied. The results provide insights into the effect of H-content on the superconductivity of Ti2CHx and demonstrate the existence of H-rich MXene in Ti2CH4, offering a potential guideline for developing hydrogenated 2D superconductive applications.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Sangeetha Kumaravel, Dhirendra Kumar, Selvasundarasekar Sam Sankar, Arun Karmakar, Ragunath Madhu, Krishnendu Bera, Hariharan N. Dhandapani, Sreenivasan Nagappan, Sudip Chakraborty, Subrata Kundu
Summary: An advanced vacancy-rich bi-chalcogenide, Cu2S-Se@Cu, was developed as a highly efficient catalyst for HER in acid. The catalyst exhibited a small overpotential and a low Tafel slope. Density functional theory studies revealed that Cu2S-Se over the Cu surface reduced the band gap and enhanced the catalytic activity.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Shashwat Singh, Deobrat Singh, Rajeev Ahuja, Maximilian Fichtner, Prabeer Barpanda
Summary: Eldfellite NaVIII(SO4)(2) is introduced as a new versatile cathode material for Li-ion and Na-ion batteries, with potential two-electron uptake. The study provides mechanistic insights into alkali ion migration and the redox center during (de)insertion of Li+/Na+ ions.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Tariq Sheikh, Gokul M. Anilkumar, Tisita Das, Atikur Rahman, Sudip Chakraborty, Angshuman Nag
Summary: Hybrid lead halide perovskites and their derivatives are important optoelectronic materials, but their water instability is a major challenge in material design. In this study, a hybrid lead halide perovskite derivative system, (4,4'-VDP)Pb2Br6, was designed using the concepts of pi-conjugation and cation-pi interaction. The system exhibited improved photoconductivity and water stability due to the electronic communication between the Pb-Br units and the intermolecular cation-pi interaction throughout the organic sublattice.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Vivek Polshettiwar, Rajesh Belgamwar, Rishi Verma, Tisita Das, Sudip Chakraborty, Pradip Sarawade
Summary: A highly active and stable Cu-based catalyst was developed for the conversion of CO2 to CO by creating a strong metal-support interaction (SMSI) between Cu active sites and TiO2-coated dendritic fibrous nano-silica (DFNS/TiO2). The catalyst exhibited excellent catalytic performance and remained active even after 200 hours of reaction. The presence of SMSI between Cu and TiO2 was confirmed by various spectroscopic techniques. The continuous generation and regeneration of defects during the reaction led to long-term high catalytic activity and stability.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Cell Biology
Shantanu Gupta, Pritam Kumar Panda, Daner A. Silveira, Rajeev Ahuja, Ronaldo F. Hashimoto
Summary: Cell fate determination is a complex process involving DNA damage response (DDR), where tumor protein p53 (p53) and phosphatase and tensin homolog (PTEN) play critical roles. A dynamic Boolean network model incorporating experimental data from NSCLC cells revealed quadra-stable dynamics of cell cycle arrest, senescence, autophagy, and apoptosis. Investigations in HeLa and MCF-7 cell lines confirmed the network predictions, suggesting that p53 and PTEN act as molecular switches governing cell fate decisions. Thus, concurrently controlling PTEN and p53 dynamics may enhance clinical outcomes.
Article
Nanoscience & Nanotechnology
Riya Wadhwa, Ashok Kumar, Ranjini Sarkar, Prajna Parimita Mohanty, Deepu Kumar, Sonia Deswal, Pradeep Kumar, Rajeev Ahuja, Sudip Chakraborty, Mahesh Kumar, Mukesh Kumar
Summary: A highly sensitive and selective H2 sensor based on Pt nanoparticle-functionalized MoS2 flakes is reported. The sensor exhibits high sensitivity, fast response, and complete recovery at room temperature. The superior response is attributed to spillover effect and adsorption sites on the Pt surface and MoS2-Pt interface. Pt nanoparticle-sensitized MoS2 is suggested as a potential candidate for low-power and room-temperature H2 sensors for hydrogen vehicles and related technologies in the near future.
ACS APPLIED NANO MATERIALS
(2023)
Article
Energy & Fuels
Zakaryae Haman, Moussa Kibbou, Nabil Khossossi, Soukaina Bahti, Poulumi Dey, Ismail Essaoudi, Rajeev Ahuja, Abdelmajid Ainane
Summary: In this study, a comprehensive investigation of two-dimensional Janus aluminum-based monochalcogenides (Al2XY with X/Y = S, Se, and Te) was conducted using density functional theory. The examined phase was found to be energetically, mechanically, dynamically, and thermally stable. The monolayers also displayed strong absorption spectra, indicating potential use in optoelectronic devices, and exhibited favorable thermoelectric properties.
JOURNAL OF PHYSICS-ENERGY
(2023)
Article
Chemistry, Physical
Showkat H. Mir, Sudip Chakraborty
Summary: This study investigates the effects of hydrostatic pressure on the structural, electronic, and optical properties of a perovskite compound. The application of pressure leads to band gap narrowing and a reduction in effective carrier masses, which could be beneficial for optoelectronic applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Showkat H. Mir, Sudip Chakraborty
Summary: Hybrid perovskites have gained attention for their high power conversion efficiency, but are often toxic or unstable. Halide double perovskites are being explored as alternative materials for optoelectronic applications. A new double perovskite, Cs2AgPdCl5, with a unique arrangement of B-site cation, was studied using density functional theory. Under hydrostatic pressure, the material demonstrated piezochromism and approached the Shockley-Queisser limit for bandgap.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Nikolaos Livakas, Stefano Toso, Yurii P. Ivanov, Tisita Das, Sudip Chakraborty, Giorgio Divitini, Liberato Manna
Summary: Halide exchange is a popular method to modify the properties of CsPbX3 nanocrystals. While exchanging Cl with Br and Br with I can form stable mixed-halide nanocrystals, exchanging Cl with I is more challenging due to a miscibility gap. This study reveals that the reaction proceeds through the formation of iodide-doped CsPbCl3 nanocrystals covered by a CsI shell, which then transition to short-lived CsPb(ClxI1-x)(3) nanocrystals and eventually transform into chloride-doped CsPbI3 nanocrystals.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Xiaoyong Yang, Rajeev Ahuja, Wei Luo
Summary: Recent research has successfully synthesized BeN4 monolayers with N & EQUIV;N triple bonds under high pressure, which exhibit anisotropic Dirac cones, high carrier mobility, and potential for direction-dependent quantum devices. Through first-principles calculations, we found that BeN4 monolayers are thermally stable and the Be vacancy is the most favorable site for hydrogen adsorption. Strain engineering can tune the Gibbs free energy of hydrogen coverage, significantly enhancing the HER catalytic activity. Furthermore, we investigated the HER mechanism through reaction kinetics and AIMD simulations. These findings contribute to the development of high-performance, non-precious, and nitrogen-rich 2D catalysts for HER.
Article
Chemistry, Physical
Mukesh Pandey, B. K. Parida, M. Ranjan, Rajeev Ahuja, Rakesh Kumar
Summary: This study proposes a technique to improve the interfacial adhesion of graphene membrane to a periodically trenched PDMS substrate by suppressing the mechanical folding instabilities in a prestretch-release process. The conformal wrinkling of the graphene membrane is confirmed through AFM imaging, which results from its pinning into the trenches. The impact of the substrate's topography on the buckling behavior of the graphene membrane is shown by surface-engineering of the PDMS substrate using ion beam irradiation.
APPLIED SURFACE SCIENCE ADVANCES
(2023)
Article
Green & Sustainable Science & Technology
Hardik L. Kagdada, Basant Roondhe, Vaishali Roondhe, Shweta D. Dabhi, Wei Luo, Dheeraj K. Singh, Rajeev Ahuja
Summary: This study focuses on the photophysical and electronic properties of 2D hybrid perovskites and explores their potential applications in solar energy harvesting. By altering the A-site cations, the authors observed changes in bandgap, Rashba splitting effects, and optical activity, which hold promise for high-efficiency solar energy applications.
ADVANCED ENERGY AND SUSTAINABILITY RESEARCH
(2023)
Article
Chemistry, Physical
Shalini Tomar, Sudip Chakraborty
Summary: The demand for an electrochemical water-splitting mechanism is increasing due to the growth in green and renewable energy conversion needs. However, developing efficient electrocatalysts remains a major challenge. In this study, DFT was used to investigate the catalytic activities of ZrS2, ZrSe2, and ZrTe2 layered structures for the HER, OER, and ORR reactions. The effects of non-metal functionalization were also examined. The findings provide valuable insights for designing cost-effective and efficient 2D electrocatalysts.
SUSTAINABLE ENERGY & FUELS
(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.
