Article
Chemistry, Multidisciplinary
Binchao Shi, Yue Wang, Chenxing Zhang, Xianhe Chen, Ertai Liu, Shilin Mei, Chang-Jiang Yao
Summary: Inducing a multiple functionality/synergistic effect through rational design and utilization of functional materials is proposed for high-performance prototype batteries. The controllable synthesis and simultaneous utilization of MoS3@polypyrrole nanowires@carbon paper and 1T & 2H MoS2@carbon nanowires@carbon paper as functional interlayers and catalytic sulfur hosts are demonstrated. These materials and structures effectively prevent lithium polysulfides and promote redox reactions, leading to a high initial discharge capacity and stable long-term cycling for Li-S batteries.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Review
Chemistry, Physical
Jinlei Qin, Rui Wang, Pei Xiao, Deli Wang
Summary: Lithium-sulfur (Li-S) batteries are seen as promising next-generation batteries due to their high theoretical capacity and low cost. However, the electrochemistry of aprotic S is hindered by the shuttling effect and slow conversion of soluble lithium polysulfides (LiPSs). Various electrocatalysts have been developed to improve the conversion kinetics of LiPSs, with heteroatom doping and polar catalyst incorporation playing an important role in overcoming these limitations.
ADVANCED ENERGY MATERIALS
(2023)
Review
Chemistry, Physical
Lei Zhou, Dmitri L. Danilov, Ruediger-A. Eichel, Peter H. L. Notten
Summary: Lithium-sulfur batteries are seen as a viable alternative to future energy storage devices due to their high theoretical energy density. However, the main challenge lies in the leakage and migration of sulfur species. Recent research has focused on developing sulfur host materials that can effectively anchor polysulfides for improved battery performance.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yaochen Song, Pengkai Tang, Yi Wang, Linnan Bi, Qi Liang, Yilin Yao, Yuhong Qiu, Liang He, Qingyu Xie, Peng Dong, Yingjie Zhang, Yao Yao, Jiaxuan Liao, Sizhe Wang
Summary: In this study, a functional heterostructure of boron nitride (BN) and MXene was designed as a separator interlayer to overcome the sluggish redox kinetics and shuttle effect of polysulfides. The experiments and theoretical calculations confirmed that this heterostructure enabled high efficiency Li+ transmission, uniform lithium deposition, strong adsorption, and efficient catalytic conversion activities of lithium polysulfides (LiPSs). The alternately layered structure provided unblocked ion transmission channels and abundant active sites, leading to accelerated polysulfides redox kinetics with reduced energy barriers. As a result, the lithium-sulfur batteries demonstrated excellent performance, with an initial discharge capacity of up to 1273.9 mAh g(-1) and a low decay rate of 0.058% per cycle in long-term cycling.
Article
Nanoscience & Nanotechnology
Tao Feng, Teng Zhao, Shuangfei Zhu, Ziheng Wang, Lei Wei, Nanxiang Zhang, Tinglu Song, Li Li, Feng Wu, Renjie Chen
Summary: By grafting a supramolecular polymer onto carbon materials, a network structure capable of engulfing polysulfides is formed to address the dissolution and shuttling issues in lithium-sulfur batteries, improving battery performance and stability.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Wenqi Yan, Xiangwen Gao, Jin-Lin Yang, Xiaosong Xiong, Shuang Xia, Wen Huang, Yuhui Chen, Lijun Fu, Yusong Zhu, Yuping Wu
Summary: By constructing a multi-layer structure with boroxine covalent organic frameworks on carbon nanotubes to improve lithium ion conductivity and enrich the heterointerfaces between the inner conductive material and the outer material, this study addresses the challenges of capacity decay and low sulfur utilization in lithium-sulfur batteries.
Article
Chemistry, Multidisciplinary
Qiang Zhang, Ruijie Gao, Zixiong Li, Binghui Zhou, Aidong Tang, Jian Wang, Ji-Jun Zou, Huaming Yang
Summary: By loading titanium dioxide nanoparticles onto the Si-O surface of halloysite, the oxygen p-band center is engineered, facilitating the desorption and conversion of polysulfides and improving the performance of lithium-sulfur batteries.
Article
Nanoscience & Nanotechnology
Rajesh K. K. Katiyar, Claudia C. Zuluaga C. Gomez, Swati Katiyar, Balram Tripathi, Gerardo Morell, Brad R. R. Weiner, Ram S. Katiyar
Summary: In this manuscript, the role of ferroelectric nanoparticles (FNPs) coated separators in capacity retention at high current density on S/SWCNT composite cathodes is reported. FNPs coated separators showed a capacity retention improvement of more than 100%, while commercial separator polypropylene (PP) had a retention rate of 72%. The FNPs coated separator acted as a repulsive charge on the separator surface to retard polysulfide migration and protected the surface of lithium from dendrite formation, resulting in higher capacity retention and stability.
Review
Chemistry, Multidisciplinary
Cheng Yuan, Hongtai Li, Genlin Liu, Pan Zeng, Jing Mao, Liang Zhang
Summary: Incorporating efficient electrocatalysts into sulfur cathodes is a promising strategy for improving the performance of lithium-sulfur batteries. However, the dynamic evolution of electrocatalysts during electrochemical reactions has been largely ignored. This review provides a comprehensive description of the occurrence, mechanism, and applications of electrocatalyst evolution, as well as strategies for regulating and characterizing this evolution.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Nanoscience & Nanotechnology
Liping Wu, Chuyue Cai, Xi Yu, Zihe Chen, Yuxin Hu, Fang Yu, Shengjun Zhai, Tao Mei, Li Yu, Xianbao Wang
Summary: Lithium sulfur batteries have high theoretical capacity and energy density, but are limited by the shuttle effects of lithium polysulfides and the growth of lithium dendrites. This study proposes a novel three-dimensional honeycombed architecture coated on commercial separators to suppress the shuttle effects and allow for fast lithium ions transportation.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Wenqi Yan, Jin-Lin Yang, Xiaosong Xiong, Lijun Fu, Yuhui Chen, Zhaogen Wang, Yusong Zhu, Jian-Wei Zhao, Tao Wang, Yuping Wu
Summary: This study improves the electrochemical performance of lithium-sulfur batteries by using a versatile asymmetric separator and a stable Li-Mg alloy anode. By employing a specially designed separator and alloy anode, the batteries exhibit long lifespan, low fading rate, and high area capacity under high current density and sulfur loading.
Article
Chemistry, Inorganic & Nuclear
Chuyue Cai, Liping Wu, Zhiwei Cai, Fang Yu, Liu Zhang, Liya Wang, Tao Mei, Liangyou Lin, Xianbao Wang
Summary: A Co-doped MnO2 nanorod network layer with oxygen vacancies was self-assembled on a commercial separator through the chemical growth method to improve the performance of lithium-sulfur batteries (LSBs). The modified separator effectively alleviated the shuttle effect and accelerated the redox conversion of polysulfides. Additionally, it demonstrated superior thermostability and flame-retardant properties. This strategy provides a new route for designing durable and efficient LSBs.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Deobrat Singh, Rajeev Ahuja
Summary: The experimentally synthesized polypeptoid nanosheet crystal structure has brought significant advances in soft material imaging and designing biomimetic nanomaterials. By investigating the electronic structure and charge-transfer mechanism of the polypeptoid material, it was found that the material can effectively suppress the shuttle effect of LiPSs.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Donghong Duan, Kaixin Chen, Chongzhi Xing, Xiaoqiang Wang, Xianxian Zhou, Shibin Liu
Summary: By simultaneous phosphating and sulfurating, a spindle-shaped CoP-Co3S4 heterostructure sulfur cathode substrate is created, which achieves efficient capture-diffusion-transformation of polysulfides at the interface. The CoP accelerates the redox kinetics toward polysulfide conversion, and the Co3S4 has a considerable ad-sorption power toward polysulfides. The CoP-Co3S4 @S cathode battery achieves a high initial capacity of 1516.9 mAh g-1 at 0.2 C and maintains that capacity after 100 cycles at 750.1 mAh g-1. After 300 cycles, even the 565.1 mAh g-1 specific capacity can be attained at 1 C.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Rui Wang, Jinlei Qin, Fei Pei, Zhizhan Li, Pei Xiao, Yunhui Huang, Lixia Yuan, Deli Wang
Summary: Ni single atoms on hollow carbon nanosheet-assembled flowers (Ni-NC) were synthesized via a pyrolysis-adsorption process to address the sluggish conversion kinetics and shuttling behavior of lithium polysulfides (LiPSs) in lithium-sulfur (Li-S) batteries. The Ni-NC-modified separator showed enhanced confinement-catalysis ability and suppressed shuttling of LiPSs, resulting in a Li-S battery with high initial capacity and cycling stability. This work presents a facile catalyst design strategy for high-performance Li-S batteries.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Electrochemistry
Sollee Kim, Yong Min Kwon, Kuk Young Cho, Sukeun Yoon
Summary: Investigated the effects of various metal iodides as additives in the electrolyte used in Li-S batteries, finding that LiI and MgI2 additives help form a stable solid electrolyte interphase (SEI) layer on the Li metal and suppress the polysulfide shuttle reaction.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Jinsol Im, Jinhyeok Ahn, Hoiju Choi, Young-Gi Lee, Sukeun Yoon, Kuk Young Cho
Summary: This study introduced a novel electrolyte additive, BDTD, to enhance the performance of high-voltage lithium metal batteries. The additive improved the stability of both the anode and the cathode, resulting in extended cycle life and high capacity retention. The research opens up new avenues for constructing high-energy-density batteries using high-voltage lithium metal batteries with the dual-function additive.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Environmental
Jinhyeok Ahn, Sukeun Yoon, Ju Young Kim, Young-Gi Lee, Kuk Young Cho
Summary: The controlled release system (CRS) combined with an energy storage device improves the electrochemical stability of lithium secondary batteries by using VC and HNT as a release system. This enhanced cycling stability of the battery system provides important insights for the use of CRS in energy storage devices.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Jinhyeok Ahn, Jinsol Im, Hyewon Seo, Sukeun Yoon, Kuk Young Cho
Summary: This study proposes the use of 2,4-difluorobiphenyl (FBP) as a fluorine-based cathode electrolyte interphase (CEI)-forming additive for Ni-rich LiNi0.83Co0.11Mn0.06O2 (NCM83), which enhances cycling stability at high cut-off voltages and promotes the formation of a stable CEI layer on the surface. The results demonstrate the potential of introducing a fluorine component to existing additives for the development of new functional additives in lithium-ion battery applications.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Jinsol Im, Jung-Dae Kwon, Dong-Ho Kim, Sukeun Yoon, Kuk Young Cho
Summary: This study developed a new sandwich Si anode without the need for prelithiation, providing high conductivity and specific capacity. It showed excellent performance in terms of initial Coulombic efficiency and capacity retention, demonstrating great potential for practical applications.
Article
Nanoscience & Nanotechnology
Prabhakar Jepiti, Sukeun Yoon, Jihoon Kim
Summary: Despite the advantages of printed electronic technologies, there are few studies on their technical maturity. Electromigration is an important reliability aspect for printed conductive patterns, and it has been identified as the primary failure mode for interconnect lines in semiconductor-integrated circuits. This study investigates the electromigration characteristics of Ag lines patterned by the electrohydrodynamic printing technique, and finds that ion migration is directed toward the cathode.
ACS APPLIED NANO MATERIALS
(2022)
Article
Electrochemistry
An Seop Lim, Jinho Kim, Yoon Hwa, Kuk Young Cho, Sukeun Yoon
Summary: SiOx is considered a promising alternative anode material for Li-ion batteries. In this study, SiOx with N-doped carbon containing Fe2O3 was synthesized and evaluated for its electrochemical properties and applicability as a stable anode material for Li-ion batteries. The results show that Fe2O3/N-C@SiOx particles have the potential to be an alternative anode material with improved performance for rechargeable batteries.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2022)
Article
Polymer Science
Jinhyeok Ahn, Youngwoo Lee, Jihoon Kim, Sukeun Yoon, Yong-Cheol Jeong, Kuk Young Cho
Summary: The development of advanced flexible materials that are stable, mechanically deformable, lightweight, cost-effective, and eco-friendly is of high interest for supporting high-performance wearable electronic devices. This study introduces a compressible electrochromic device (ECD) using a three-dimensional (3D) compressible sponge electrolyte layer. The simple structure of the compressible ECD makes it advantageous for optical tactile sensor applications. The low-voltage operation ensures long-term performance of the sensor, and the color change in the ECD acts as an effective pressure-sensing mechanism.
Article
Nanoscience & Nanotechnology
Murali Bissannagari, Mahammad Rafi Shaik, Kuk Young Cho, Jihoon Kim, Sukeun Yoon
Summary: This study demonstrates a new strategy to stabilize metal-based batteries by using bimodal dielectric particles as artificial layers to suppress dendrite formation. The artificial layer induces electric polarization and sequentially moves zinc ions towards the zinc anode, effectively inhibiting zinc dendrite growth and significantly improving the electrochemical performance of zinc anodes.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Jinsol Im, Jinhyeok Ahn, Ju Young Kim, Eun Ji Park, Sukeun Yoon, Young-Gi Lee, Kuk Young Cho
Summary: High-voltage cycling in lithium-ion batteries can increase energy density but also leads to capacity decay. In this study, a functional separator with an adhesive layer is used to prevent delamination and retain high capacity. The results highlight the importance of mechanical interlocking between the electrode and separator and provide insights into electrode interfaces.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Mahammad Rafi Shaik, Min Ji Yeo, Kuk Young Cho, Sukeun Yoon
Summary: In this study, a HfO2 and PEDOT:PSS protective layer is formed on Li-metal to inhibit electrolyte degradation, suppress Li dendrite formation, and ensure high mechanical strength. The protective layer allows for uniform Li deposition and enhances the dielectric characteristics of the electrode, resulting in superior electrochemical properties and effective inhibition of Li dendrite formation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Jinhyeok Ahn, Minjae Kim, Junhyeok Seo, Sukeun Yoon, Kuk Young Cho
Summary: This study investigates the effects of different thicknesses of polyethylene (PE) separators on the performance and energy density of lithium metal batteries (LMBs). The results show that thinner separators lead to higher volumetric energy density and improved LMB performance. The study also identifies pore closure in separators as a major obstacle for the long-term operation of LMBs. Therefore, an ideal LMB separator design is proposed, consisting of a thin and robust separator with pore closure suppression functionality, to ensure long-term stable high-energy-density LMBs.
JOURNAL OF POWER SOURCES
(2023)
Article
Engineering, Environmental
Junhyeok Seo, Juyeon Im, Sukeun Yoon, Kuk Young Cho
Summary: The development of high-energy-density lithium metal batteries is crucial for emerging energy storage applications. Stabilizing lithium metal anodes under severe operating conditions is challenging due to harmful side reactions triggered by dissolved transition metal ions from the cathode. In this study, an ion-entrapping functional separator was fabricated to suppress TM ion crossover, leading to improved cycle numbers and capacity retention. The results provide new insights for designing advanced high-energy-density LMB.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Mahammad Rafi Shaik, Syryll Maynard Olidan, Jihoon Kim, Kuk Young Cho, Sukeun Yoon
Summary: In this study, a fertilizer-derived N-methylthiourea was used as an additive to regulate the Zn-electrolyte interface, solving the issue of instability in zinc metal anodes. The additive delayed water adsorption and controlled the diffusion of Zn2+ to stabilize the Zn/electrolyte interface, leading to uniform Zn plating/stripping and suppression of dendrite formation. The electrochemical performance of the Zn|Zn symmetric cell was greatly improved, and the Zn|V2O5-C full-cell showed consistent capacity over 420 cycles.
JOURNAL OF MATERIALS CHEMISTRY A
(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)