Article
Chemistry, Physical
Linxing Shi, Haoyang Yuan, Xianggang Sun, Xinyi Li, Wenbo Zhu, Jie Wang, Liangsheng Duan, Qile Li, Zhen Zhou, Zengguang Huang, Xinxin Ban, Dongen Zhang
Summary: Precoating a methylammonium acetate (MAAc) ionic liquid onto a TiO2 layer before depositing CsPbIBr2 film improves the crystal quality and interface contact, reduces defects, suppresses nonradiative recombination, and enhances the photovoltaic conversion efficiency.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Energy & Fuels
Junyi Huang, Shenghua He, Wenzhi Zhang, Aziz Saparbaev, Yi Wang, Yueyue Gao, Luwen Shang, Guohua Dong, Lobar Nurumbetova, Gentian Yue, Yongguang Tu
Summary: The VALT-CsPbIBr2 film prepared through dynamic vacuum-assisted low-temperature engineering shows superior performance in optical properties and microstructure, leading to increased efficiency and stability of perovskite solar cells.
Article
Chemistry, Physical
Jiajun Yang, Xiang Yu, Xubing Lu, Xingsen Gao, Lingling Shui, Jinwei Gao, Sujuan Wu, Jun-Ming Liu
Summary: This study focuses on improving the performance of CsPbIBr2 perovskite solar cells by using TFEMA, which results in enhanced efficiency due to optimized microstructure, reduced carrier recombination, lower trap-state density, and promoted charge transfer.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Yulong Wang, Pin Lv, Junye Pan, Jiahui Chen, Xinjie Liu, Min Hu, Li Wan, Kun Cao, Baoshun Liu, Zhiliang Ku, Yi-Bing Cheng, Jianfeng Lu
Summary: In this study, a hybrid vapor deposition method combined with solvent-assisted recrystallization is proposed for fabricating high-quality large-area perovskite films with low defect densities. The results show that the formation of an intermediate phase can induce the secondary growth of small grains into large ones, resulting in perovskite films with significantly reduced grain boundaries and defect densities. Additionally, the proposed method successfully suppresses all recombination reactions, leading to high efficiencies and operational stability of the perovskite solar cells and modules.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Guanghui Yu, Ke-Jian Jiang, Wei-Min Gu, Yawen Li, Yuze Lin, Yanting Xu, Xinning Jiao, Tangyue Xue, Yiqiang Zhang, Yanlin Song
Summary: Vacuum-assisted thermal annealing (VATA) is demonstrated as an effective approach for controlling the morphology and crystallinity of the CsPbI3 perovskite films, leading to improved efficiency and stability of solar cells.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Energy & Fuels
Jiayu Bi, Jiarun Chang, Miao Lei, Fanning Meng, Guiqiang Wang
Summary: To enhance the stability and crystal quality of inorganic lead halide perovskites, a bifunctional Lewis base additive, phenylthiourea (PTU), was incorporated into the CsPbIBr2 precursor. The introduction of PTU effectively improved the crystallization process and stability of CsPbIBr2, resulting in high-quality perovskite film with large crystal grains. Furthermore, PTU additive stabilized the perovskite phase structure and passivated undercoordinated Pb2+ defects. The carbon-based perovskite solar cell based on PTU-CsPbIBr2 achieved a high power conversion efficiency of 10.09% and maintained over 80% of its initial efficiency after 800 hours of storage under ambient air.
Article
Chemistry, Inorganic & Nuclear
Ubaid Khan, Abdur Rauf, Shan Feng, Abdul Rehman Akbar, Gangqiang Peng, Qianfeng Zheng, Rongguang Wu, Mehreen Khan, Zhengchun Peng, Fude Liu
Summary: Different strategies, including interface modification, cell encapsulation, perovskite doping, etc., are used to improve the stability of perovskite solar cells. In this study, CsF was used as a doping material to optimize the formation of CsPbIBr2 film and enhance the thermal stability of the devices. The results showed that CsF successfully diffused into the CsPbIBr2 film, leading to reduced trap state density, suppressed carrier recombination, improved crystallinity, and increased power conversion efficiency from 13.15% to 15.54%. This research provides important insights for fabricating highly stable all-in-organic perovskite thin films for solar cells.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Kun Zhang, Yang Wang, Mingquan Tao, Lutong Guo, Yongrui Yang, Jiangyang Shao, Yanyan Zhang, Fuyi Wang, Yanlin Song
Summary: In this study, a CS2 vapor-assisted passivation strategy is proposed to address the surface trap issue in perovskite photovoltaics. The method successfully enhances device efficiency and stability, with an average lifetime of 1040 hours and over 90% initial efficiency retention after 2000 hours at high humidity and temperature.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yuan Cai, Jian Cui, Ming Chen, Miaomiao Zhang, Yu Han, Fang Qian, Huan Zhao, Shaomin Yang, Zhou Yang, Hongtao Bian, Tao Wang, Kunpeng Guo, Molang Cai, Songyuan Dai, Zhike Liu, Shengzhong (Frank) Liu
Summary: Using the multifunctional molecule DFPDA as an additive, the stability issues of perovskite solar cells have been effectively addressed, resulting in high-quality films with an efficiency of 22.21% and significantly improved stability against moisture, heat, and light.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Energy & Fuels
Junye Pan, Xing Zhang, Yong Zheng, Wanchun Xiang
Summary: By combining substrate preheat treatment and NH4PF6 precursor additive engineering, high-quality CsPbIBr2 perovskite film was prepared, leading to improved light harvest and reduced nonradiative charge recombination. The PSCs demonstrated a champion efficiency of 10.1% under 100 mW cm(-2) illumination and exhibited excellent moisture stability under 40% relative humidity.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Engineering, Environmental
Jieqiong Liu, Qingquan He, Jiayu Bi, Miao Lei, Wei Zhang, Guiqiang Wang
Summary: The introduction of cellulose acetate into CsPbIBr2 perovskite precursor solution can effectively enhance the quality of the perovskite film, resulting in higher crystallinity, larger grain size, and smoother surface. The optimized CsPbIBr2 perovskite film with cellulose acetate shows a champion efficiency of 7.52% and excellent long-term stability in both ambient condition and high-humidity environment.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Mayur Jagdishbhai Patel, Himangshu Baishya, Sushant Sharma, Nehal Zehra, Maimur Hossain, Ramkrishna Das Adhikari, Parameswar Krishnan Iyer
Summary: In order to enhance the performance of hybrid organic inorganic perovskite solar cells (HOIP-SCs), it is important to minimize intrinsic defect states and improve film quality. Incorporating an imidazolium containing cationic conjugated poly electrolyte (CPE), PFBT-MI, effectively passivated the ionic defects in the perovskite structure, resulting in improved film morphology and charge transport. The 1% doped perovskite device achieved the highest power conversion efficiency (PCE) of 19.23% compared to the pristine device, and the bromide ion counterion reduced hysteresis and improved long-term stability.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Xu Zhao, Jiajun Yang, Shengcheng Wu, Tong Yun, Shaozhen Li, Jinwei Gao, Sujuan Wu
Summary: In this work, CsAc and HPbI3 dual-additives are used to tune the properties of low-temperature processed CsPbIBr2 perovskite solar cells (PSCs). CsAc is used to modify the surface of CsPbIBr2 and optimize the interface, while HPbI3 is used to dope the perovskite layer. The dual-additive strategy can optimize the microstructure and regulate the optoelectrical characteristics of carbon-based CsPbIBr2 PSCs. The CsAc passivates the vacancy defect and improves the performance of PSCs, while the HPbI3 improves the crystallinity and morphology of CsPbIBr2 films and reduces trap-state density.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Donghwan Koo, Ungsoo Kim, Yongjoon Cho, Junghyun Lee, Jihyung Seo, Yunseong Choi, Kyoung Jin Choi, Jeong Min Baik, Changduk Yang, Hyesung Park
Summary: This study successfully enhanced the performance and stability of perovskite solar cells through a graphene-assisted electron transport layer, achieving a power conversion efficiency of 21.2% and notably improved operational stability.
CHEMISTRY OF MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Yang Zhong, Jia Yang, Xueying Wang, Yikun Liu, Qianqian Cai, Licheng Tan, Yiwang Chen
Summary: Organic-inorganic halide perovskites have become the most attractive alternatives for next-generation photovoltaic devices. However, the intrinsic instability of perovskite solar cells (PVSCs) due to ion migration hinders their performance enhancement. This review aims to investigate ion migration and summarize recent advances in inhibition strategies to develop highly stable PVSCs for commercialization.
ADVANCED MATERIALS
(2023)
Article
Electrochemistry
Abdul Qayoom Mugheri, Shaista Khan, Ali Asghar Sangah, Aijaz Ahmed Bhutto, Muhammad Younis Laghari, Nadeem Ahmed Mugheri, Asif Ali Jamali, Arsalan Ahmed Mugheri, Nagji Sodho, Abdul Waheed Mastoi, Aftab Kandhro
Summary: Green hydrogen has the potential to transition to a pollution-free energy infrastructure. This study proposes a solution to produce hydrogen during the photoelectrochemical process, offering greater stability and control over chemical reactions. Techno-economic assessments show the efficiency and economic feasibility of co-producing value-added chemicals to enhance green hydrogen production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Danpeng Cheng, Wuxin Sha, Qigao Han, Shun Tang, Jun Zhong, Jinqiao Du, Jie Tian, Yuan-Cheng Cao
Summary: LiNixCoyMn1-x-yO2 (NCM) is a critical cathode material for lithium-ion batteries in electric vehicles. The aging of cathode/electrolyte interfaces leads to capacity degradation and long-term cycle instability. A novel neural network model called ACGNet is developed to predict electrochemical stability windows of crystals, allowing for high-throughput screening of coating materials. LiPO3 is identified as a promising coating material with high oxidation voltage and low cost, which significantly improves the cycle stability of NCM batteries. This study demonstrates the accuracy and potential of machine learning in battery materials.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
P. Mohana, R. Yuvakkumar, G. Ravi, S. Arunmetha
Summary: This study successfully fabricates a non-noble CuO/NiO/rGO nanocomposite and investigates its electrocatalytic performance for oxygen evolution reaction in alkaline environment. The experimental results demonstrate that the electrocatalyst exhibits high activity and good stability, offering a new synthetic approach for sustainable energy production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Qiong Qu, Jing Guo, Hongyu Wang, Kai Zhang, Jingde Li
Summary: In this study, a bifunctional electrode host design consisting of carbon nanofibers implanted ordered porous Co-decorated Al2O3 supported on carbon nanotube film (CNTF) was proposed to address the shuttling effect of lithium polysulfides (LiPSs) and dendrite formation of metal lithium anode in lithium-sulfur (Li-S) batteries. The electrode exhibited excellent conductivity, efficient confinement of LiPSs, and catalytic conversion performance, resulting in high initial capacity and good capacity retention during cycling. As an anode, the electrode showed excellent Li+ diffusion performance and uniform lithium growth behavior, achieving a dendrite-free lithium electrode. The flexible pack cell assembled from these electrodes delivered a specific capacity of 972 mAh g(-1) with good capacity retention.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Hong Zhang, Jin-Peng Yu, Chen Chen, Cheng-Yong Shu, Guang-Yu Xu, Jie Ren, Kai Cui, Wen-Fang Cai, Yun-Hai Wang, Kun Guo
Summary: Spray coating of acetylene black nanoparticles onto stainless steel mesh can enhance its biofilm formation ability and current density, making it a promising electrode material for microbial electrochemical systems. The spray coating method is simple, cost-effective, and suitable for large-size stainless steel electrodes.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Binpeng Hou, Jingjin Chen, Li-Hong Zhang, Xiaowen Shi, Zizhong Zhu
Summary: The electrochemical performance of Li1.20Mn0.44Ni0.32Co0.04O2 and its oxygen-deficient phase Li1.20Mn0.44Ni0.32Co0.04O1.83 was studied through first-principles calculations. The results show that the oxygen-deficient phase has a higher theoretical capacity but lower voltage platform and higher chemical activity compared to the pristine phase.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Yating Du, Sayoko Shironita, Daisuke Asakura, Eiji Hosono, Yoshitsugu Sone, Yugo Miseki, Eiichi Kobayashi, Minoru Umeda
Summary: This study investigates the effect of high- and low-temperature environments on the charge-discharge performance of a Li-ion battery. The deterioration mechanisms of the battery at different temperatures are analyzed through various characterization techniques. The results indicate that the battery performance deteriorates more significantly at a low-temperature environment of 5 degrees C compared to higher temperatures. The understanding of the deterioration mechanisms can contribute to the development of safer battery usage methods.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Si-Si Shi, Zhi-Xiang Yuan, Fei Zhang, Ping Chen
Summary: In this study, a new nano-electrocatalyst was prepared, which exhibited superior electrocatalytic activity for the reduction of NO2- to ammonia in a neutral electrolyte, potentially due to the synergistic enhancement between Co3O4-x and Co.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Berna Dalkiran, Havva Bekirog
Summary: This study reports the use of deep eutectic solvents (DES) based on ethylene glycol and urea as low-cost and green electrolytes for enhancing electrochemical detection of natural antioxidants. The study successfully developed a disposable and effective electrochemical sensing platform for simultaneous determination of ascorbic acid (AA) and gallic acid (GA) using NaOH nanorods on a pencil graphite electrode. The proposed electrode showed improved analytical performance, with higher peak currents and shifted oxidation potentials in DES compared to BR buffer medium.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Sijun Ren, Jianguo Huang
Summary: In this study, a novel bio-inspired nanofibrous WO3/carbon composite was synthesized using a facile hydrothermal method. The three-dimensional network structure of the composite alleviated the volume expansion of WO3 nanorods and enhanced the charge-transport kinetics. The optimized composite exhibited superior lithium storage properties.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Zhilong Zheng, Yu Chen, Hongxia Yin, Hengbo Xiao, Xiangji Zhou, Zhiwen Li, Ximin Li, Jin Chen, Songliu Yuan, Junjie Guo, Haibin Yu, Zhen Zhang, Lihua Qian
Summary: This study found that interstitial Zn cations in CoMoO4 can modulate the dissolution kinetics of Mo cations and improve the OER performance. The interstitial Zn cations can prevent the dissolution of Co cations at high potential, enhancing the durability of the catalyst.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Xiaobo Lin, Shern R. Tee, Debra J. Searles, Peter T. Cummings
Summary: Molecular dynamics simulations using the constant potential method were used to investigate the charging dynamics and charge storage of supercapacitors. The simulations revealed that the water-in-salt electrolyte exhibited the highest charge storage and significantly higher capacitance on the negative electrode. The varying contributions of different electrode regions to supercapacitor performance were also demonstrated.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Wiktoria Lipinska, Vita Saska, Katarzyna Siuzdak, Jakub Karczewski, Karol Zaleski, Emerson Coy, Anne de Poulpiquet, Ievgen Mazurenko, Elisabeth Lojou
Summary: The spatial distribution of enzymes on electrodes is important for bioelectrocatalysis. In this study, controlled spatial distribution of gold nanoparticles on Ti nanodimples was achieved. The efficiency of enzymatic O2 reduction was found to be influenced by the size of the gold nanoparticles and their colocalization with TiO2. The highest stability of enzymatic current was observed with the largest gold nanoparticles.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Tariq M. Al-Hejri, Zeenat A. Shaikh, Ahmed H. Al-Naggar, Siddheshwar D. Raut, Tabassum Siddiqui, Hamdan M. Danamah, Vijaykumar V. Jadhav, Abdullah M. Al-Enizi, Rajaram S. Mane
Summary: This study explores a promising self-growth approach for the synthesis of nickel hydroxide (Ni(OH)2) nanosponge-balls on the surface of a nickel-foam (NiF) electrode. The modified NiF electrode, named Ni(OH)2@NiF, shows distinctive nanosponge-ball morphology and demonstrates excellent energy storage capability and electrocatalytic performance in both hydrogen and oxygen evolution reactions.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Rafael Del Olmo, Gregorio Guzman-Gonzalez, Oihane Sanz, Maria Forsyth, Nerea Casado
Summary: The use of Lithium-Ion Batteries (LIBs) is becoming increasingly extensive, and it is important to optimize the devices to achieve their maximum practical specific capacity. In this study, mixed ionic-electronic conducting (MIEC) binders based on PEDOT:PSS and PEDOT: PDADMA-TFSI were developed for Li-ion cathodes, and their performance was compared with conventional formulations. The influence of electrode formulations, including the addition of conducting carbon and an Organic Ionic Plastic Cristal (OIPC), was also analyzed. The proposed binders showed improved performance compared to conventional formulations with different electrolyte types and active materials.
ELECTROCHIMICA ACTA
(2024)