Article
Chemistry, Multidisciplinary
Mikhail A. Soldatov, Pavel V. Medvedev, Victor Roldugin, Ivan N. Novomlinskiy, Ilia Pankin, Hui Su, Qinghua Liu, Alexander V. Soldatov
Summary: This review discusses recent advances in the use of in situ and operando synchrotron spectroscopies to study photo-electrocatalytic reactions. The focus is on the establishment of operando reaction mechanisms using X-ray Absorption (XAS) and X-ray Photoelectron (XPS) Spectroscopies. The review also covers the operando cells required for conducting such experiments at synchrotron facilities and discusses classical and modern theoretical approaches for extracting structural information from X-ray Absorption Near-Edge Structure (XANES) spectra.
Article
Chemistry, Physical
Jie Zhang, Thi Ha My Pham, Zhixiao Gao, Mo Li, Youngdon Ko, Loris Lombardo, Wen Zhao, Wen Luo, Andreas Zuttel
Summary: Metal complexes have been found to be selective and active catalysts for electrochemical CO2 reduction (CO2RR). Using in situ Raman, X-ray photoelectron spectroscopy, and advanced electron microscopy, researchers have discovered that copper phthalocyanine (CuPc) undergoes reconstruction during CO2RR. Further investigations have revealed that CuPc demetalates to Cu atoms, which then agglomerate to form Cu clusters and Cu nanoparticles (NPs). The size of the Cu NPs is highly dependent on experimental parameters, and the selectivity of multicarbon products is positively correlated with NP size. This study provides important insights for future applications of metal complex catalysts in CO2RR and inspires the design of advanced electrocatalysts for other electrochemical reactions.
Review
Chemistry, Multidisciplinary
Federico Dattila, Ranga Rohit Seemakurthi, Yecheng Zhou, Nuria Lopez
Summary: This study reviews recent progress in computational modeling of electrocatalytic systems, focusing on electrochemical CO2 reduction and hydrogen evolution. Novel approaches such as ab initio calculations and machine learning have been employed to partially reproduce surface reconstruction and interpret experimental data, providing insights for future research directions.
Article
Chemistry, Multidisciplinary
Jin-Mei Chen, Wen-Jun Xie, Zhi-Wen Yang, Liang-Nian He
Summary: In this study, molecular engineering of copper phthalocyanines (CuPc) was carried out to modify the electron-withdrawing groups (EWGs) and electron-donating groups (EDGs). PPy-coated CuPc catalysts were prepared and found to effectively catalyze the electrochemical reduction of CO2 to methane. The introduction of EWGs significantly improved the selectivity towards methane, while modification with EDGs reduced the selectivity. This research provides a facile and effective molecular engineering approach for the preparation of electrocatalysts for CO2 reduction.
Article
Chemistry, Physical
Divyani Gupta, Alankar Kafle, Man Singh, Devyani Dahare, Tharamani C. Nagaiah
Summary: Electrochemical dinitrogen reduction (NRR) has the potential to replace the energy-intensive Haber-Bosch process for clean ammonia (NH3) production. However, the selectivity between NRR and hydrogen evolution reaction (HER) is a major challenge. This study used scanning electrochemical microscopy (SECM) to investigate the production of NH4+ and its competition with HER during electrochemical N-2 reduction. The findings provide valuable information on the competition between NRR and HER with high spatial resolution and accuracy.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Review
Chemistry, Multidisciplinary
Zuolong Chen, Xiyang Wang, Joel P. Mills, Cheng Du, Jintae Kim, John Wen, Yimin A. Wu
Summary: Electrochemical CO2 reduction is an efficient approach to achieve eco-friendly energy generation and environmental sustainability, with 2D materials as promising catalyst candidates. Understanding the fundamental reaction mechanisms in CO2 ECR is crucial, requiring advanced in situ and operando characterizations.
Article
Chemistry, Physical
Hao Zhang, Ying Wang, Qiong Lei, Chiu Tang, Jun Yin, Tsz Woon Benedict Lo
Summary: This study tracks the evolution of Cu2O precursors with different morphologies during the electrochemical CO2 reduction reaction. The results reveal the importance of morphology on the reaction kinetics and highlight the structure-reactivity correlation. Density functional theory calculations validate the synergy between Cu2O and Cu phases.
Article
Chemistry, Multidisciplinary
Miyeon Chang, Wenhao Ren, Weiyan Ni, Seunghwa Lee, Xile Hu
Summary: In this study, the effects of three different ionomers (Nafion, Sustainion-type XA-9, and poly(terphenyl piperidinium) (PTP)) on the electrochemical reduction of CO2 using Cu-based electrocatalysts were investigated. It was found that Nafion had little influence on the performance, XA-9 promoted CO formation, and PTP favored hydrogen and formate production. The observed effects were attributed to charge transfer and hydrophilicity/hydrophobicity of the ionomers. This study highlights the structure-sensitive nature of the ionomer-catalyst interaction in CO2RR.
Review
Chemistry, Multidisciplinary
Dorottya Hursan, Csaba Janaky
Summary: The performance of continuous-flow CO2 electrolyzers has improved in recent years, but there is still a need for improvement in stability, energy efficiency, and multicarbon product formation. Despite the potential of operando characterization techniques to identify performance losses, only a few studies have utilized them. This review aims to motivate researchers to use operando techniques in continuous-flow CO2 electrolyzers to advance the field towards industrialization.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Thanh Hai Phan, Karla Banjac, Fernando P. Cometto, Federico Dattila, Rodrigo Garcia-Muelas, Stefan J. Raaijman, Chunmiao Ye, Marc T. M. Koper, Nuria Lopez, Magali Lingenfelder
Summary: Research has shown that Cu surfaces can reconstruct into Cu nanocuboids during the electroreduction of CO2, with the size of these structures being controllable by the applied potential and synthesis time. This finding presents a novel strategy for enhancing the long-term stability of Cu-based catalysts.
Article
Chemistry, Physical
Yang Fu, Qixian Xie, Lili Wan, Qining Huang, Jingshan Luo
Summary: This study presents a novel and facile method for designing efficient catalysts for C2H4 production in electrocatalytic CO2 reduction.
MATERIALS TODAY ENERGY
(2022)
Review
Chemistry, Multidisciplinary
Weiwei Quan, Yingbin Lin, Yongjin Luo, Yiyin Huang
Summary: This study focuses on the synthesis-controlled structure preferences and the modulation of intermediates' interactions for the design of Cu catalysts for selective ECO2RR. Various advanced structural engineering approaches, including alloy/compound formation, doping/defect introduction, and specific crystal facets/amorphization, are discussed in relation to diverse synthesis controls for achieving highly selective ECO2RR. Challenges and opportunities in Cu catalyst fabrication for ECO2RR are also addressed.
Article
Chemistry, Physical
Myeong-Geun Kim, Jinwoo Park, Youngjo Choi, Ho Chang Song, Seung-Hoon Kim, Kyeong-Mi Bang, Hyung Chul Ham, Nak-Kyoon Kim, Da Hye Won, Byoung Koun Min, Sung Jong Yoo, Woong Kim
Summary: Recent advances in electrocatalysts for CO2 reduction have shown promise in the large-scale production of low-carbon fuels. The production of multicarbon chemicals, such as C-4, has been a challenge due to low production rates and efficiency. This study demonstrates the use of CuxIr1-x alloy nanoparticles as efficient electrocatalysts for converting CO2 into t-BuOH with significantly improved production rates and efficiency. The findings propose a mechanism for C-4 formation based on electronic interactions and surface properties, opening possibilities for Ir-based alloys in CO2 reduction and the production of C-4 chemicals.
ADVANCED ENERGY MATERIALS
(2023)
Review
Chemistry, Physical
Dilan Karapinar, Charles E. Creissen, Jose Guillermo Rivera de la Cruz, Moritz W. Schreiber, Marc Fontecave
Summary: This Review highlights the importance and challenges of electrochemical CO2 reduction for ethanol production, categorizing and evaluating the performance of copper-based catalysts to aid in the design of more efficient catalysts for selective ethanol formation.
ACS ENERGY LETTERS
(2021)
Review
Energy & Fuels
Juan Miguel Alvarez-Gomez, Ana Sofia Varela
Summary: This review presents the progress made on long-term CO2 electrolysis and discusses degradation pathways and mitigation strategies.
Article
Materials Science, Multidisciplinary
Jialin Cai, Jianye Yang, Xin Xie, Jie Ding, Leyan Liu, Wanyu Tian, Yushan Liu, Zhiyong Tang, Baozhong Liu, Siyu Lu
Summary: This study reports a cross-linked porous carbon-doped MoO2 (C-MoO2)-based catalyst for electrochemical hydrogen evolution reaction (HER). The presence of carbon atoms in C-MoO2 adjusts its electronic structure, and the loaded small Ru nanoparticles provide fast water dissociation rate and moderate H adsorption strength. The Ru/C-MoO2 catalyst exhibits low overpotential and excellent stability in a pH-universal environment.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Ling Bai, Shijie Jia, Yidan Gao, Chuan Li, Xin Chen, Shuang Zhou, Junwen Han, Fengchun Yang, Xin Zhang, Siyu Lu
Summary: Under visible light illumination, the p-n WO3/SnSe2 heterojunction significantly activates the oxygen evolution reaction (OER) catalysis of CoFe-layered double hydroxide (CF)/carbon nanotubes (CNTs), achieving a low overpotential of 224 mV at 10 mA cm(-2) and a small Tafel slope of 47 mV dec(-1), surpassing RuO2 and most previously reported transition metal-based OER catalysts. The p-n WS heterojunction exhibits strong light absorption and produces photogenerated carriers, with the photogenerated holes trapped by CF to suppress charge recombination and facilitate charge transfer, accelerating OER kinetics and enhancing the OER activity. This study highlights the possibility of using heterojunctions to activate OER catalysis and advances the design of energy-efficient catalysts for water oxidation systems using solar energy.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Physical
Jiajia Shi, Yao Wei, Leilei Zhang, Dan Zhou, Zhounan Yu, Shengxin Zhang, Xiaofeng Yang, Ji Yang, Yang Su, Zheng Jiang, Aiqin Wang
Summary: This study reports for the first time the significant promotional effect of potassium on the Co-N-C single-atom catalyst for the direct dehydrogenation of ethylbenzene. The introduction of potassium resulted in the formation of Co-O-K moiety, which facilitated the heterolytic cleavage of the C-H bond of ethylbenzene, achieving the highest steady-state reaction rate reported thus far.
Article
Chemistry, Multidisciplinary
Rui Fu, Haoqiang Song, Xingjiang Liu, Yongqiang Zhang, Guanjun Xiao, Bo Zou, Geoffrey I. N. Waterhouse, Siyu Lu
Summary: A microwave-assisted strategy was reported for the preparation of solid-state fluorescent multi-color carbon dots (SFM-CDs) with blue, yellow, and red emissions from the same precursors within 5 minutes. The SFM-CDs showed excellent solid-state fluorescence performance and were used as the fluorescent converter layer in multi-color LEDs and white LEDs with a high color rendering index.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Yongqiang Zhang, Lu Wang, Yongsheng Hu, Laizhi Sui, Liwen Cheng, Siyu Lu
Summary: Carbon dots (CDs) have great potential in various applications. By changing the precursor ratios, blue-emissive CDs (B-CDs) with laser emission characteristics were synthesized. The laser threshold was found to be lowest at precursor ratios of 1:1 to 2:1.
Article
Multidisciplinary Sciences
Dafeng Zhang, Mengnan Li, Xue Yong, Haoqiang Song, Geoffrey I. N. Waterhouse, Yunfei Yi, Bingjie Xue, Dongliang Zhang, Baozhong Liu, Siyu Lu
Summary: In this study, a zinc-doped RuO2 nanowire array electrocatalyst with outstanding catalytic performance for oxygen evolution reaction under acidic conditions was reported. Experimental and theoretical investigations revealed a synergistic effect of Zn dopants and oxygen vacancies on regulating the binding configurations of oxygenated adsorbates, resulting in an alternative Ru-Zn dual-site oxide path of the reaction. This led to significantly enhanced catalytic activity and stability.
NATURE COMMUNICATIONS
(2023)
Review
Chemistry, Applied
Yuanyuan Shi, Han Wu, Jiangwei Chang, Zhiyong Tang, Siyu Lu
Summary: Water electrolysis is a promising technology for carbon-neutral and sustainable energy production. However, the efficiency of water splitting is limited by the oxygen evolution reaction. Developing efficient and stable catalytic materials is crucial for improving the performance of water electrolysis.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Lin Ai, Yifei Pei, Ziqi Song, Xue Yong, Haoqiang Song, Gongjie Liu, Mingjun Nie, Geoffrey I. N. Waterhouse, Xiaobing Yan, Siyu Lu
Summary: Flexible carbon dot ribbons with excellent optical, electrical and semiconducting properties have been synthesized through efficient packing of individual carbon dots. These ribbons show outstanding stability and fast optoelectronic responses, making them ideal active layer materials for transparent flexible memristors with rapid Chinese character learning capability. This work lays the foundation for wearable artificial intelligence.
Article
Chemistry, Multidisciplinary
Baowei Zhang, Qi Liang, Xue Yong, Han Wu, Zhaoyang Chu, Yanhang Ma, Sergio Brovelli, Liberato Manna, Siyu Lu
Summary: In this study, colloidal synthesis of Bi-doped Cs2Ag(x)Na1-xInCl6 double perovskite nanoplatelets (NPLs) was reported. These NPLs exhibited a near-unity photoluminescence quantum yield (PLQY), a record emission efficiency for nanoscale lead-free metal halides. The more efficient optical emission of NPLs compared to nanocubes with the same composition and surface ligands can be attributed to the facet-defect tolerant behavior of double perovskites.
Review
Materials Science, Multidisciplinary
Linlin Shi, Boyang Wang, Siyu Lu
Summary: Graphene quantum dots (GQDs), a new class of carbonaceous form, have attracted significant attention due to their exceptional electronic, fluorescent, photoluminescent, chemiluminescent, and electrochemiluminescent properties. Nanomaterials based on GQDs have been widely utilized in various fields, and the synthetic strategies for GQDs have been summarized. However, the stepwise total synthesis tactics at the atomic-structure level have not been adequately addressed. This review provides a comprehensive summary of total synthetic strategies of GQDs using a skeleton growth approach and proposes a confident guideline for the accurate synthesis of GQD structures.
Article
Materials Science, Multidisciplinary
Zhiyuan Fang, Nan Ding, Wen Xu, Tianyuan Wang, Yue Wang, Lu Zi, Junhua Hu, Siyu Lu, Donglei Zhou, Xue Bai, Hongwei Song
Summary: By incorporating lanthanide ions (Ln(3+) = Pr3+, Gd3+, Nd3+, Eu3+, Tm3+, Ho3+, and Yb3+) into all-inorganic CsPbI2Br films, the film quality is significantly improved, leading to enhanced performance of photodetectors (PDs).
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Tengfei Liu, Guangchao Yin, Ziqi Song, Jingkun Yu, Xue Yong, Baowei Zhang, Lin Ai, Siyu Lu
Summary: In this study, chlorosalicylaldehyde-functionalized carbon dots (CDs) with solid-state fluorescence were prepared via molecular self-assembly. The position of chlorine on the aromatic core of chlorosalicylaldehyde affected the coplanarity and degree of conjugation of the CDs, thereby adjusting their emission wavelengths. The self-assembly process showed distinct isomeric effects, resulting in different morphologies. The multicolor luminescence of the CDs makes them potential candidates for light-emitting diodes, fluorescent films, and fingerprint detection.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Xinwei Li, Xiaoyu You, Zhuang Yan, Caoyu Yang, Lulu Zuo, Xuewei Huang, Lin Chang, Siyu Lu, Zhiyong Tang
Summary: A Pd nano-dendritic catalyst was prepared by electrochemical deposition method for one-step electrocatalytic oxidation of ethylene to ethylene glycol. Using Ag as the dopant with Pd nano-dendritic, the faradaic efficiency and the partial current density further increased.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Review
Chemistry, Inorganic & Nuclear
Shuwen Zhou, Huijuan Cai, Xinjuan He, Zhiyong Tang, Siyu Lu
Summary: This review summarizes the design, classification, and biological applications of antioxidant nanomaterials, including the design strategies for regulating antioxidant activity, different types of antioxidant nanomaterials based on enzymatic properties and scavenged ROS, and the representative biological applications in therapeutics, protection, and other ROS-related applications.
COORDINATION CHEMISTRY REVIEWS
(2024)
Review
Chemistry, Multidisciplinary
Xin Yang, Geoffrey I. N. Waterhouse, Siyu Lu, Jihong Yu
Summary: Afterglow materials with distinctive and long-lived optical emission properties have attracted widespread attention. Recent research has discovered many new afterglow materials with high photoluminescence quantum yields and long lifetimes. Organic-inorganic hybrid afterglow materials utilize the advantages of organic molecules and heavy atom dopants to achieve excellent performance and have the advantages of low manufacturing costs, diverse structures and optical properties.
CHEMICAL SOCIETY REVIEWS
(2023)
Article
Chemistry, Applied
Maoyi Yi, Jie Li, Mengran Wang, Xinming Fan, Bo Hong, Zhian Zhang, Aonan Wang, Yanqing Lai
Summary: In this study, polyacrylic acid (PAA) was used as a binder for the cathode in all-solid-state batteries. Through H+/Li+ exchange reaction, a uniform PAA-Li coating layer was formed on the cathode surface, improving the stability of the cathodic interface and the crystal structure. The SC-NCM83-PAA cathode exhibited superior cycling performance compared to traditional PVDF binder.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Yonghan Zhou, Zhongfeng Ji, Wenrui Cai, Xuewei He, Ruiying Bao, Xuewei Fu, Wei Yang, Yu Wang
Summary: By learning from the pencil-writing process, a solid-ink rubbing technology (SIR-tech) has been invented to develop durable metallic coatings on diverse substrates. The composite metallic skin by SIR-tech outperforms pure liquid-metal coating and shows great potential for various applications.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Ruiqi Tian, Hehe Zhang, Zeyu Yuan, Yuehua Man, Jianlu Sun, Jianchun Bao, Ming-Sheng Wang, Xiaosi Zhou
Summary: In this study, polypyrrole-encapsulated Sb2WO6 microflowers were synthesized and demonstrated to exhibit excellent potassium storage properties and cycling stability. The improved performance of Sb2WO6@PPy was attributed to the unique microflower structure, enhanced electronic conductivity, and protective PPy coating.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Review
Chemistry, Applied
Longxing Wu, Zhiqiang Lyu, Zebo Huang, Chao Zhang, Changyin Wei
Summary: This paper presents a comprehensive survey on physics-based state of charge (SOC) algorithms applied in advanced battery management system (BMS). It discusses the research progresses of physical SOC estimation methods for lithium-ion batteries and presents future perspectives for this field.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Honggang Huang, Yao Chen, Hui Fu, Cun Chen, Hanjun Li, Zhe Zhang, Feili Lai, Shuxing Bai, Nan Zhang, Tianxi Liu
Summary: The d-d orbital coupling induced by crystal-phase engineering effectively adjusts the electronic structure of electrocatalysts, improving their activity and stability, which is significant for electrocatalyst research.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Quanzhen Sun, Yifan Li, Caixia Zhang, Shunli Du, Weihao Xie, Jionghua Wu, Qiao Zheng, Hui Deng, Shuying Cheng
Summary: In this study, indium (In) ions were introduced into flexible Cu2ZnSn(S,Se)(4) (CZTSSe) solar cells to modify the back interface and passivate deep level defects in CZTSSe bulk. The results showed that In doping effectively inhibited the formation of secondary phase and V-Sn defects, decreased the barrier height at the back interface, passivated deep level defects in CZTSSe bulk, increased carrier concentration, and significantly reduced the V-OC deficit. Eventually, a flexible CZTSSe solar cell with a power conversion efficiency of 10.01% was achieved. This synergistic strategy of interface modification and bulk defects passivation through In incorporation provides a new approach for fabricating efficient flexible kesterite-based solar cells.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Negah Hashemi, Jafar Hussain Shah, Cejun Hu, Subhajit Nandy, Pavlo Aleshkevych, Sumbal Farid, Keun Hwa Chae, Wei Xie, Taifeng Liu, Junhu Wang, Mohammad Mahdi Najafpour
Summary: This study investigates the effects of Fe on the oxygen-evolution reaction (OER) in the presence of Au. The study identifies two distinct areas of OER associated with Fe and Au sites at different overpotentials. Various factors were varied to observe the behaviors of FeOxHy/Au during OER. The study reveals strong electronic interaction between Fe and Au, and proposes a lattice OER mechanism based on FeOxHy.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Yingshi Su, Yonghui Cheng, Zhen Li, Yanjia Cui, Caili Yang, Ziyi Zhong, Yibing Song, Gongwei Wang, Lin Zhuang
Summary: This study systematically investigates the key roles of Nafion on Cu nanoparticles electrocatalyst for CO2RR. The Nafion modifier suppresses the hydrogen evolution reaction, increases CO2 concentration and mass transfer process, and activates CO2 molecule to enhance C2 product generation. As a result, the selectivity of the hydrogen evolution reaction is reduced and the efficiency of C2 products is significantly improved.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Daijie Deng, Honghui Zhang, Jianchun Wu, Xing Tang, Min Ling, Sihua Dong, Li Xu, Henan Li, Huaming Li
Summary: By doping sulfur into vanadium nitride, the S-VN/Co/NS-MC catalyst exhibits enhanced oxygen reduction reaction activity and catalytic performance. When applied in liquid and flexible ZABs, it shows higher power density, specific capacity, and cycling stability.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Review
Chemistry, Applied
Yi Li, Fei Zhang
Summary: Self-assembly of metal halide perovskite nanocrystals holds significant application value in the fields of display, detector, and solar cell due to their unique collective properties. This review covers the driving forces, commonly used methods, and different self-assembly structures of perovskite nanocrystals. Additionally, it summarizes the collective optoelectronic properties and application areas of perovskite superlattice structures, and presents an outlook on potential issues and future challenges in the development of perovskite nanocrystals.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Anki Reddy Mule, Bhimanaboina Ramulu, Shaik Junied Arbaz, Anand Kurakula, Jae Su Yu
Summary: Direct growth of redox-active noble metals and rational design of multifunctional electrochemical active materials play crucial roles in developing novel electrode materials for energy storage devices. In this regard, silver (Ag) has attracted great attention in the design of efficient electrodes. The construction of multifaceted heterostructure cobalt-iron hydroxide (CFOH) nanowires (NWs)@nickel cobalt manganese hydroxides and/or hydrate (NCMOH) nanosheets (NSs) on the Ag-deposited nickel foam and carbon cloth (i.e., Ag/ NF and Ag/CC) substrates is reported. The as-fabricated Ag@CFOH@NCMOH/NF electrode delivered superior areal capacity value of 2081.9 μA h cm-2 at 5 mA cm-2. Moreover, as-assembled hybrid cell based on NF (HC/NF) device exhibited remarkable areal capacity value of 1.82 mA h cm-2 at 5 mA cm-2 with excellent rate capability of 74.77% even at 70 mA cm-2. Furthermore, HC/NF device achieved maximum energy and power densities of 1.39 mW h cm-2 and 42.35 mW cm-2, respectively. To verify practical applicability, both devices were also tested to serve as a self-charging station for various portable electronic devices.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Zanling Huang, Shuqi Zhu, Yuan Duan, Chaoran Pi, Xuming Zhang, Abebe Reda Woldu, Jing-Xin Jian, Paul K. Chu, Qing-Xiao Tong, Liangsheng Hu, Xiangdong Yao
Summary: In this study, it was found that Ni sites act as a host to attract Fe(III) to form Fe(Ni)(III) binary centers, which promote the oxygen evolution reaction (OER) activity and stability by cyclical formation of intermediates. Additionally, other ions can also catalyze the OER process on different electrodes.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Jie Zeng, Jian Bao, Ya Zhang, Xun-Lu Li, Cui Ma, Rui-Jie Luo, Chong-Yu Du, Xuan Xu, Zhe Mei, Zhe Qian, Yong-Ning Zhou
Summary: The balance between cationic redox and oxygen redox is crucial for achieving high energy density and cycle stability in sodium batteries. This study demonstrates the reversible Mn2+/Mn4+ redox in a P3-Na0.65Li0.2Co0.05Mn0.75O2 cathode material through Co substitution, effectively suppressing the contribution of oxygen redox and improving structure stability.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Daniela M. Josepetti, Bianca P. Sousa, Simone A. J. Rodrigues, Renato G. Freitas, Gustavo Doubek
Summary: Lithium-oxygen batteries have high energy density potential but face challenges in achieving high cyclability. This study used operando Raman experiments and electrochemical impedance spectroscopy to evaluate the initial discharge processes in porous carbon electrodes. The results indicate that the reaction occurs at the Li2O2 surface and the growth of Li2O2 forms a more compact and homogeneous structure.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Ziqi Zhang, Jinyun Xu, Yu Zhang, Liping Zhao, Ming Li, Guoqiang Zhong, Di Zhao, Minjing Li, Xudong Hu, Wenju Zhu, Chunming Zheng, Xiaohong Sun
Summary: This paper explores the challenge of increasing global CO2 emissions and highlights the role of porous metal oxide materials in electrocatalytic reduction of CO2 (CO2RR). Porous metal oxides offer high surface area and tunability for optimizing CO2RR reaction mechanisms.
JOURNAL OF ENERGY CHEMISTRY
(2024)
