Article
Chemistry, Physical
Lei Tan, Jiangtao Yu, Haiyan Wang, Hongtao Gao, Xien Liu, Lei Wang, Xilin She, Tianrong Zhan
Summary: The NiSe2/Ni3Se4 dual-phase electrocatalysts synthesized on Ni foam show improved efficiency in oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), with lower voltage and good durability. The composition of the catalyst influences the charge-state of Ni and the phase distribution, impacting the catalytic performance significantly. The interfacial electron transfer between Ni3Se4 and NiSe2 enhances conductivity and improves adsorption/desorption energies, contributing to the overall efficiency of the electrolyzer.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Yu-Ru Lin, Chun-Kuo Peng, Yu-Chang Lin, Hsiang-Chun Yu, Chao-Lung Chiang, Suh-Ciuan Lim, San-Yuan Chen, Yan-Gu Lin
Summary: A bifunctional electrocatalyst, IrO x /MnO x , was designed and synthesized by modulating the electronic and coordination properties. This catalyst surpasses the limitations of IrO2 catalysts and exhibits excellent activity and stability for acidic water splitting, achieving a current density of 10 mA cm(-2) at 1.51 V for 36 hours without degradation. The presence of unsaturated Ir centers in the catalyst lowers energy barriers and enables efficient proton and oxygen adsorption and desorption. This work provides a promising strategy for catalyst design and contributes to the development of sustainable energy applications.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Engineering, Environmental
Yue Wang, Pengfei Yang, Yuecheng Gong, Dongzheng Liu, Silu Liu, Weiping Xiao, Zhenyu Xiao, Zhenjiang Li, Zexing Wu, Lei Wang
Summary: The development of highly efficient and low-cost electrocatalysts for hydrogen/oxygen evolution reactions is crucial for their large-scale practical applications. The use of corrosive engineering and low-temperature phosphorization approach enables the preparation of Mo-doped NiFeP on nickel-iron foam with amorphous morphology, porous structure, and superhydrophilic surface, providing abundant active sites and facilitating charge transfer. The prepared Mo-NiFeP/NIF exhibits excellent electrocatalytic performance for OER and HER with low overpotentials and remarkable stability under large current density.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Electrochemistry
Yasemin Aykut, Ayse Bayrakceken Yurtcan
Summary: Hydrogen energy has gained momentum worldwide, but faces challenges in its applicability in different fields, including sustainable hydrogen production and efficient catalysts. This review focuses on electrocatalysts developed for the low-temperature electrocatalytic water splitting method, summarizing catalyst parameters, nanostructures, challenges, and prospects.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Lunhong Ai, Ying Wang, Yang Luo, Yao Tian, Shiyu Yang, Mei Chen, Jing Jiang
Summary: By controlled partial oxidation, a robust Ru-RuO2 heterostructure was designed and constructed for high-performance oxygen evolution reaction under acidic conditions, demonstrating excellent long-term durability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Energy & Fuels
Bilal Sarfraz, Muhammad Taqi Mehran, Mutawara Mahmood Baig, Salman Raza Naqvi, Asif Hussain Khoja, Faisal Shahzad
Summary: This study presents a greener synthesis method for MXene and demonstrates its excellent electrochemical characteristics as an overall water-splitting catalyst. The Cl-terminated MXene shows higher reaction activity and stability for oxygen and hydrogen evolution reactions compared to HF-MXene.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Mingzhu You, Shasha Yi, Guanxing Zhang, Weimin Long, Deliang Chen
Summary: In this study, a stable catalyst based on Co2P/NiMoO4 heterojunction arrays supported on nickel foam was reported for water splitting and urea oxidation. The catalyst exhibited lower overpotential and higher catalytic performance at a large current density compared to a commercial catalyst RuO2/NF. The addition of Co2P was found to significantly affect the chemical environment and electron structure of NiMoO4, increasing the number of active sites and promoting charge transfer across the Co2P/NiMoO4 interface.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Zhaolong Wang, Hanxiang Chen, Jian Bao, Yanhua Song, Xiaojie She, Guoai Lv, Jiujun Deng, Huaming Li, Hui Xu
Summary: The development of a bifunctional electrode material with amorphous NiFeMo films grown on a conductive nickel foam substrate has significantly improved the overall water splitting performance, allowing for efficient hydrogen production to alleviate carbon emissions.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Leyla Najafi, Reinier Oropesa-Nunez, Sebastiano Bellani, Beatriz Martin-Garcia, Lea Pasquale, Michele Serri, Filippo Drago, Jan Luxa, Zdenek Sofer, David Sedmidubsky, Rosaria Brescia, Simone Lauciello, Marilena Zappia, Dipak Shinde, Liberato Manna, Francesco Bonaccorso
Summary: The research focuses on synthesizing metallic rutile VO2 (VO2 (R)) nanosheets by topochemical transforming liquid-phase exfoliated VSe2, resulting in 2D non-layered materials with porous morphology and high catalytic activity for water splitting reactions in both acidic and alkaline media.
Article
Chemistry, Physical
J. Junita, D. Jayalakshmi, John D. Rodney
Summary: Solution combustion route derived perovskite type barium nickelate (BaNiO3) nanoparticles showed high electrocatalytic activity for overall water splitting, with over-potentials of 253 mV for OER and 427 mV for HER, achieving a current density of 10 mAcm(-2) in 1.0 M KOH. When used as a bifunctional electrocatalyst in a two-electrode alkaline electrolyser, the BaNiO3 nanoparticles enabled benchmark current density at a low cell voltage of 1.82 V. Remarkably, the electrocatalytic performance of the setup improved by 4.9% after continuous overall water splitting for 24 h at 30 mAcm(-2). Thus, BaNiO3 nanoparticles can serve as a cost-effective alternative for noble metal electrocatalysts in clean H-2 production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Green & Sustainable Science & Technology
X. Lyu, Y. Zhang, X. Wang, H. Chen, S. Li, W. Zhang, Y. Hu, F. Li, D. Li, D. Yang
Summary: Zn-doped NiFe LDH was synthesized as a bifunctional electrocatalysts in alkaline electrolyte, showing enhanced activities for both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). The Tafel slope of NiFeZn LDH for OER was much lower than that of commercial IrO2 catalysts, and it also exhibited superior HER activity compared to most reported transition metal LDHs. Density functional theory results indicated that the Zn dopants effectively manipulated the electronic structure of NiFeZn LDH, leading to enhanced active sites for HER.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Energy & Fuels
Mrunal Bhosale, Sadhasivam Thangarasu, Nagaraj Murugan, Yoong Ahm Kim, Tae-Hwan Oh
Summary: This study presents a new nanostructured morphology of VS2-rGO-Ni ternary system for alkaline oxygen evolution reaction (OER). By optimizing the interfacial interaction between VS2 and rGO and the dispersion of Ni nanoparticles, the electrocatalyst exhibited excellent OER performance and long-term stability. The nanostructured morphology with a well-connected network structure provides a large active surface for interacting with charge species.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Jiehai Peng, Yuan Yuan, Wuhua Yuan, Kun Peng
Summary: In this study, urchin-like Co3O4 microspheres were synthesized and oxygen vacancies and phosphorus doping were introduced to adjust the electronic structure, increasing catalytic activity, improving adsorption energy of intermediates, and activating more active sites for the catalytic reaction. Additionally, Co3O4-Ov and Co3O4-P catalysts demonstrated excellent performance in OER and HER, with an electrolytic cell only needing 1.58 V to achieve 20 mA cm-2 for overall water splitting.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Hua Yang, Zihao Zhou, Huijuan Yu, Hongli Wen, Runnong Yang, Shaomin Peng, Ming Sun, Lin Yu
Summary: Efficient and economic bifunctional electrocatalyst for water splitting to produce hydrogen is urgently required. Layered double hydroxides (LDHs) are effective for oxygen evolution reaction (OER) but show challenging hydrogen evolution reaction (HER) activity. A hydrothermal-treatment strategy enhances the HER and OER performance of NiCo-LDH by creating metal vacancies and forming Ni/Co(OH)2 phase, tuning electronic structure, and improving electrical conductivity. The resulting NiCo-LDH-OH catalyst exhibits significantly reduced overpotentials for both HER and OER, and demonstrates superior activity for overall water splitting with no decay after 20 hours. This work paves a new path for efficient LDHs-based HER/OER bifunctional catalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Rui Yao, Yun Wu, Qiang Zhao, Jinping Li, Guang Liu
Summary: In this study, ultrathin Ni-Fe2B nanosheet arrays were successfully prepared on nickel foam through an electroless plating method, serving as a bifunctional electrocatalyst for overall water splitting. The resulted nanosheets exhibited low overpotential and stable catalytic activities in alkaline electrolyte, attributed to the synergistic effect of electron-coupling across Ni and Fe atoms and the active sites exposed by the large surface area.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Electrochemistry
Afifa Sadaqat, Ghulam Ali, Mahmood ul Hasan, Faiza Jan Iftikhar, Sidra Khalid, Uzma Khalique, Shumaila Karamat
Summary: In this study, a FeS2/carbon hybrid composite was prepared for sodium-ion batteries (SIBs) as a negative electrode. The FeS2/C composite exhibited excellent structural reliability, sodium storage capacity, and rate performance. The synergistic interaction among FeS2 particles sited on the conductive sheets of mesoporous carbon matrix contributed to the improved adsorption of sodium ions, good rate capacity, and cycling stability.
ELECTROCHIMICA ACTA
(2023)
Article
Materials Science, Multidisciplinary
Sunghwan Yeo, Hee Soo Yun, Jun Hwan Kim, Sungwook Mhin, HyukSu Han
Summary: This study investigates the barrier properties of Cr and chromium nitride multi-coating in nuclear cladding applications, and finds that the current waveform plays a critical role in the final performance of the coating.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Nitasha Komal, Ghulam Ali, Manzar Sohail, Muhammad Mazhar, Zahida Malik, M. Hamid Sarwar Wattoo
Summary: This article examines the acceptance of women as shamans in North and Central Asian Shamanism and as witches in Continental Europe during the Middle Ages, focusing on their roles in healing practices and the reasons behind them. It discusses historical evidence that demonstrates mankind's interest in its environment and fascination with unknown, mysterious, and mystical events throughout the cultural process.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Sun Young Jung, Kang Min Kim, Jeong Ho Ryu, Sunghwan Yeo, Hyelin Jeon, Arpan Kumar Nayak, Nguyen Thi Thu Thao, Enkhbayar Enkhtuvshin, So Jung Kim, Jin Uk Jang, Min Gi Kim, Kyeong-Han Na, Won-Youl Choi, Junghwan Bang, Seunggun Choi, Taeseup Song, Sungwook Mhin, HyukSu Han
Summary: In this study, iridium-doped hydrogenated titanate (Ir-HTO) nanobelts were reported as a promising catalyst with low iridium content for the acidic oxygen evolution reaction (OER). The addition of low iridium significantly enhanced the catalytic activity and stability of single-crystalline HTO nanobelts with exposed {100} facets. Compared to the commercial benchmark IrO2 catalyst, Ir-HTO showed a 25% reduction in overpotential for current density of 10 mA cm-2. Furthermore, Ir-HTO exhibited the highest efficiency as an electrocatalyst for the acidic OER. Improved intrinsic catalytic activity and stability of Ir-HTO were confirmed through comprehensive electrochemical characterizations.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Analytical
Mohammed Jalalah, HyukSu Han, Milan Mahadani, Arpan Kumar Nayak, Farid A. Harraz
Summary: The creation of energy harvesting/storage systems from biomass/waste materials offers a green and sustainable option for biomass reuse, with significant scientific and technological implications. Microstructure management is crucial for carbon-based materials to achieve the required applications in the fields of supercapacitor and conversion. In this study, a facile production method of heteroatom-doped porous carbon (HAPC) from Enhydra fluctuans leaves as electrode material for supercapacitor was demonstrated, resulting in large specific-surface area and good pore-size distribution. The solid-state symmetric supercapacitor device (SSSD) showed exceptional durability, maintaining 94% of its specific capacitance after 10,000 charge/discharge cycles.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Humaira S. Bhatti, Arif Mumtaz, Rubina Shahin, Ghulam Ali
Summary: Doping tungsten (W) enhances the electrochemical performance of lithium titanate (LTO) anode by altering its crystalline and electronic structures, as well as electronic/ionic conductivities. The reduction of Ti4+ ions to Ti3+ ions induced by W6+ increases the room-temperature electronic conductivity, while the lattice spacing increases on the substitution of W6+ at Ti4+ octahedral sites, resulting in improved room-temperature Li-ion conductivity/diffusivity. The electrochemical characteristics of LTO are influenced by the dopant type, doping concentration, substitutional site of the dopant, resulting structural variations, and varying electronic/ionic conductivities and conduction mechanisms.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Engineering, Chemical
Mohammed Jalalah, HyukSu Han, Arpan Kumar Nayak, Farid A. Harraz
Summary: In this study, nitrogen-doped graphitized carbon-based materials with a huge specific surface area were synthesized and proved to be promising metal-free catalysts for the oxygen reduction reaction. They exhibited good activity and stability, surpassing conventional platinum-based catalysts in alkaline medium.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Nanoscience & Nanotechnology
Nguyen Thu Loan, Tran Thi Thu Huong, Minh Anh Luong, Le Van Long, HyukSu Han, Thi Dieu Thuy Ung, Nguyen Quang Liem
Summary: This paper reports the successful synthesis of AgInS2 nanocrystals double-shelled with GaS (x) and ZnS, which exhibit bright and narrow excitonic luminescence. The AgInS2/GaS (x) /ZnS NCs with a core/double-shell structure show high chemical and photochemical stability. The double-shell structure significantly enhances the luminescence quantum yield (QY) to about 60% and maintains the narrow excitonic emission for long-term storage over 12 months.
Article
Chemistry, Applied
So Jung Kim, Heechae Choi, Jeong Ho Ryu, Kang Min Kim, Sungwook Mhin, Arpan Kumar Nayak, Junghwan Bang, Minyeong Je, Ghulam Ali, Kyung Yoon Chung, Kyeong-Han Na, Won-Youl Choi, Sunghwan Yeo, Jin Uk Jang, HyukSu Han
Summary: Electrochemical water splitting for hydrogen production is a promising renewable energy-conversion technique. However, large-scale freshwater electrolysis may deplete water resources and cause water scarcity. Therefore, seawater electrolysis is considered as a potential solution for the future energy and water crisis. In this study, zinc-doped nickel iron (oxy)hydroxide nanocubes passivated by negatively charged polyanions (NFZ-PBA-S) have been developed as an effective electrocatalyst for seawater oxidation, with outstanding catalytic activity, stability, and selectivity.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Nguyen Thi Thu Thao, Kwangsoo Kim, Jeong Ho Ryu, Byeong-Seon An, Arpan Kumar Nayak, Jin Uk Jang, Kyeong-Han Na, Won-Youl Choi, Ghulam Ali, Keun Hwa Chae, Muhammad Akbar, Kyung Yoon Chung, Hyun-Seok Cho, Jong Hyeok Park, Byung-Hyun Kim, HyukSu Han
Summary: The authors find that Ir-doped calcium copper titanate (CCTO) perovskite exhibits ultrahigh mass activity for the acidic oxygen evolution reaction (OER). By substituting Ti with Ir, the metal-oxygen covalency is significantly increased, leading to a reduced energy barrier for charge transfer. CCTO, as a highly polarizable perovskite, possesses low defect formation energy for oxygen vacancy, inducing a high number of oxygen vacancies in Ir-doped CCTO (Ir-CCTO). Electron transfer occurs from the oxygen vacancies and Ti to the substituted Ir, resulting in favorable adsorptions of oxygen intermediates at Ti sites and efficient charge supplies during OER.
Article
Engineering, Environmental
Sidra Jamil, Yiming Feng, Muhammad Fasehullah, Ghulam Ali, Bing Wu, Yu-Jie Guo, Bushra Jabar, Adil Mansoor, Yu-Bin Niu, Maowen Xu
Summary: This study demonstrates a stable anionic redox in Mn-rich P2-type Na0.67Mn0.8Fe0.1Mg0.1O2 by substituting Ni with Mg in the TM layer. The Mg substitution enhances the thermodynamic stability and promotes extra charge on the O atom, mitigating irreversible oxygen redox. Moreover, Mg substitution improves the reversibility of P2-O2 phase transition and Na+ diffusion kinetics.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Physical
Haseeb Ahmad, Khadija Tul Kubra, Annam Butt, Umair Nisar, Faiza Jan Iftikhar, Ghulam Ali
Summary: This article discusses the sustainable energy storage technologies of solid-state sodium batteries and the challenges they face. It proposes strategies to improve the performance of solid-state sodium batteries by studying different types of solid electrolytes. The prospects of solid electrolyte development in the future are also analyzed.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Burcu Kalyoncuoglu, Metin Ozgul, Sebahat Altundag, Emine Altin, Iqra Moeez, Kyung Yoon Chung, Muhammad Arshad, Mustafa Goktan Aydin, Tolga Depci, Serdar Altin, Sevda Sahinbay
Summary: This study reports the positive effects of Ag substitution/addition to Na0.67MnO2, which can increase the capacity and improve the cycle life. The positive effects are mainly attributed to the enlarged interlayer spacing, suppressed Jahn-Teller effect, and increased electrical conductivity due to the presence of metallic Ag.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Electrochemistry
Alia Shahid, Khadija Tul Kubra, Ghulam Ali, Rabbia Naz, Annam Butt, Fauzia Iqbal, Ayesha Salman
Summary: In this study, an anomalous quaternary hybrid material (NiMn2O4/NiWO4/NGO/PANI) is synthesized and its electrochemical performance is evaluated. The quaternary electrode exhibits remarkable specific capacitance, low impedance, and superior charge transfer performance, making it suitable for composite hybrid supercapacitor applications.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Sung Yeob Kim, Hee-Jae Ahn, Young-Hoon Kim, Hong-Kyu Kim, Byeong-Hyeon Lee, Young-Woon Byeon, Jae-Ho Park, Kyung Yoon Chung, Jae-Chul Lee
Summary: This study presents a microsized CuS conversion anode for Na-ion batteries that achieves high capacity, stable cycling performance, and excellent rate performance. The developed anode offers a simple and cost-effective solution without the need for expensive materials or complicated synthesis methods, providing new avenues for high-performance battery electrodes.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
