Article
Chemistry, Physical
Qian Chen, Yi Wei, Xiaokun Zhang, Zhilin Yang, Fan Wang, Wei Liu, Jinghan Zuo, Xiaokang Gu, Yong Yao, Xingguo Wang, Feifei Zhao, Shubin Yang, Yongji Gong
Summary: In this study, vertically aligned Ti3C2Tx MXene nanosheet arrays were used to regulate Li metal nucleation and deposition, resulting in high Coulombic efficiencies and stability.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Kui Lin, Xiaofu Xu, Xianying Qin, Shuwei Wang, Cuiping Han, Huanran Geng, Xiaojing Li, Feiyu Kang, Guohua Chen, Baohua Li
Summary: An effective and scalable electrospraying strategy was developed to fabricate vertically aligned graphene pillars for the lithium metal anode, which demonstrated improved cycling stability and high Li utilization efficiency.
Article
Energy & Fuels
Sung-Woo Park, Hyun Jung Shin, Young Jin Heo, Dong-Wan Kim
Summary: Lamellar-structured, vertically aligned silicon@reduced graphene oxide frameworks were developed for binder-free, high-areal-capacity lithium ion battery anodes. The electrode exhibited high specific capacity, reversibility, and cycle stability attributed to its unique inner porous structure and uniform carbon layers. A high areal capacity was achieved by increasing the initial sol concentration, even at a high current density of 3 mA cm(-2).
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Chang Zhang, Lei Dong, Nan Zheng, Haiyin Zhu, Cong Wu, Fugang Zhao, Wei Liu
Summary: The high-performance, dendrite-free anode enabled by highly-ordered graphene arrays exhibits a specific capacity at high current density and avoids lithium dendrite issues. This design provides a simple and effective strategy for fast charging and safe lithium-ion batteries.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Physical
Damian Pandel, Julian Neises, Stefan O. Kilian, Hartmut Wiggers, Niels Benson
Summary: Researchers have found that using vertically aligned carbon nanotubes as an electrically conductive scaffolding, combined with silicon nanoparticles as anode active material, can improve the capacity, rate capability, and cycling stability of lithium-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Duo Pan, Gui Yang, Hala M. Abo-Dief, Jingwen Dong, Fengmei Su, Chuntai Liu, Yifan Li, Ben Bin Xu, Vignesh Murugadoss, Nithesh Naik, Salah M. El-Bahy, Zeinhom M. El-Bahy, Minan Huang, Zhanhu Guo
Summary: A cellulose aerogel with highly enhanced thermal conductivity was successfully obtained by constructing a vertically aligned silicon carbide nanowires/boron nitride network. The composite exhibited significantly increased thermal conductivity compared to pure epoxy, both in vertical and horizontal directions. Additionally, it showed good electrical insulation and excellent electromagnetic wave absorption performance.
NANO-MICRO LETTERS
(2022)
Article
Engineering, Environmental
Tiansheng Mu, Hongfu Lu, Yang Ren, Xin Wan, Xing Xu, Siping Tan, Yulin Ma, Geping Yin
Summary: An artificial protective layer with interface defects is proposed to improve the cycling stability and rate performance of lithium metal anodes. The study focuses on titanium oxide (TiO2) and demonstrates that the interfacial oxygen-deficient TiO2 coating (H-TiO2) promotes lithium ion diffusion kinetics and prevents lithium dendrite formation. The H-TiO2 protective layer enables lithium metal anodes to have ultra-long cycling stability and improves the performance of full cells paired with LiFePO4 cathode.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Geng Luo, Xiaoguang Yin, Dongqing Liu, Arshad Hussain, Fude Liu, Xingke Cai
Summary: In this study, a simple method was developed to grow vertically aligned ZnO nanoflakes on the surface of 3D Cu foam through an electrochemical synthetic process. The unique structure of the nanoflakes effectively suppressed the growth of lithium dendrites, increasing the number of lithium metal nucleation sites and the specific surface area of the anode. As a result, the performance of lithium metal batteries was greatly improved.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Ruiting Chen, Yafei Xue, Xinyue Xu, Hui Yang, Tengfei Qiu, Lingling Shui, Xin Wang, Guofu Zhou, Michael Giersig, Sacha Pidot, James A. Hutchison, Eser Metin Akinoglu
Summary: This study presents a lithography-free method for fabricating carbon nanotube arrays with tunable pitch and size. The pitch of the periodic arrays can be controlled by the diameter of silica particles, while the size of individual nanotubes can be adjusted by the catalyst particle size and reaction time.
Article
Chemistry, Physical
Y. Mizuno, Y. Ito, K. Ueda
Summary: The study demonstrates that vertically aligned graphene/diamond heterojunctions can function as optoelectronically-controllable synapses mimicking key characteristics of biological synapses. They exhibit photo-sensing properties, photo-controllable synaptic plasticity, and can serve as image sensors providing optical memory function while selectively memorizing information based on importance. These results may contribute to the development of neuromorphic optical computers simulating human visual memory systems modulated by specific interests.
Article
Chemistry, Physical
Jing Xiao, Junwei Han, Debin Kong, Huifeng Shi, Xiaojuan Du, Ziyun Zhao, Fanqi Chen, Peng Lan, Shichao Wu, Yuefei Zhang, Quan-Hong Yang
Summary: By embedding carbon nanotubes into a graphene hydrogel, a self-adaptable carbon network is built to buffer the volume fluctuations of noncarbon nanoparticles and maintain dynamic electrical connectivity during charging and discharging. This structure enables the noncarbon anode to achieve high volumetric capacities and long cycle life.
ENERGY STORAGE MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Alan Jesus Cortes de la Torre, Jose Antonio Avila-Nino, Rene Antano-Lopez, Elsie Araujo
Summary: Electrodeposition assisted by nanoporous membranes is a method for synthesizing replicable nanostructures, and we propose an approach using multiwalled carbon nanotubes as a conductive substrate for the growth of vertically aligned polypyrrole and poly(3,4-ethylene dioxy-thiophene) nanotubes. This approach simplifies the electrode preparation process, improves capacitance and power density values, and has the potential for high-performance flexible energy storage devices.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Ni Wu, Sai Che, Peidi Shen, Neng Chen, Fengjiang Chen, Guang Ma, Hongchen Liu, Wang Yang, Xiaobai Wang, Yongfeng Li
Summary: In this study, a facile and economic ice template method was proposed to prepare vertically aligned nacre-mimetic structure of hexagonal boron nitride (BN) for thermal interface materials. The resulting BN thin film exhibited a high through-plane thermal conductivity of 3.8 W/mK at a low filler loading of 18.7%, which was 2433% and 100% higher than that of pristine polydimethylsiloxane (PDMS) and the PDMS composite with randomly distributed BN-TA, respectively. The finite element analysis results further confirmed the superior axial heat transfer performance of the highly longitudinally ordered 3D BN-TA skeleton.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
H. P. Zhou, H. Zhang, H. M. Wang, S. Zhang, T. T. Feng, Z. Q. Xu, Z. X. Fang, M. Q. Wu
Summary: This study proposes the use of carbon tetrafluoride (CF4) plasma growth to construct a stable solid electrolyte interface (SEI). The plasma-generated SEI enables uniform distribution of lithium ions on the surface of the Li metal anode and inhibits the growth of lithium dendrites. The method demonstrates good cycling performance in symmetrical cells and full cell systems.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Fan Tang, Yong-Gang Sun, Guang-Xia Dai, Jia-Lin Yan, Xi-Jie Lin, Jian-Hua Qiu, An-Min Cao
Summary: A facile synthetic protocol was developed for preparation of Co-based oxides nanotubes without the usage of templates, which showed superior cycling performance and rate capability as anodes for lithium-ion batteries compared with solid nanoparticles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Electrical & Electronic
Kang Jea Lee, Duc Anh Dinh, Huynh Tran My Hoa, Pham Hoai Phuong, Hoang Hung Nguyen, Kwan San Hui, Kwun Nam Hui, Tran Viet Cuong
Summary: In this study, plasmonic coupling effect was utilized to enhance the whispering gallery mode (WGM) resonance emission in InGaN/GaN multi-quantum well (MQW) microdisks by decorating Ag nanoparticles on microdisks.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Physical
Yuwei Zhao, Donghai Wu, Tingting Tang, Chongguang Lyu, Junfeng Li, Shunping Ji, Cheng-zong Yuan, Kwan San Hui, Chenyang Zha, Kwun Nam Hui, Houyang Chen
Summary: This article introduces an in situ tailored interface strategy for removing capping agents from the surface of copper sulfide and enhancing its catalytic activity. The method allows for the production of clean copper sulfide surfaces without the need for harsh processing conditions or non-commercial materials, leading to improved battery performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Review
Materials Science, Multidisciplinary
Alpha Chi Him Tsang, Jintao Zhang, Kwun Nam Hui, Kwan San Hui, Haibao Huang
Summary: Direct ink writing (DIW) is a low-cost and environmentally-friendly method for rapid design and construction of scalable 3D structures, utilizing optimized rheological properties and a wide range of nanomaterials to enhance performance. It has potential applications in medical, energy storage, and environmental treatment fields.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Review
Materials Science, Multidisciplinary
Xiaolong Xu, Xiuxiu Zhao, Kwan San Hui, Duc Anh Dinh, Kwun Nam Hui
Summary: This article summarizes the current progress of rechargeable batteries, introduces the principles of electrochemical reactions for different types of batteries, and analyzes the technological challenges in electron and ion transport. Approaches for regulating electronic and ionic transports to enhance electrochemical performance are discussed, as well as highlighting advanced energy storage materials with good conductivities. Several perspectives on potential research directions for high-performance rechargeable batteries for practical application are proposed.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Physical
Haixing Gao, Shuo Wang, Weng-Chon (Max) Cheong, Kaixi Wang, Huifang Xu, Aijian Huang, Junguo Ma, Jiazhan Li, Weng-Fai (Andy) Ip, Kwan San Hui, Duc Anh Dinh, Xi Fan, Feng Bin, Fuming Chen, Kwun Nam Hui
Summary: Ultrathin nitrogen-doped carbon nanosheets with intrinsic defects were synthesized through the pyrolysis of ZIF-8 with linker vacancies. The as-synthesized electrocatalyst exhibited excellent oxygen reduction reaction (ORR) activity and zinc-air battery performance. The adjacent sp3-carbon was found to enhance the adsorption and activation of oxygen molecules on sp2-carbon, leading to a lower ORR overpotential.
Article
Chemistry, Physical
Chao Chen, Ji Zhou, Wenbin Gong, Xueying Fan, Xiaodong Meng, Shang Chen, Longhua Sun, Yongqiang Meng, Kangjia Tao, Burak Ulgu, Pingchuan Sun, Christopher W. Bielawski, Jianxin Geng
Summary: The solvation properties of potassium ions have a significant impact on the performance of energy storage devices. A multidentate ether-based electrolyte is demonstrated to effectively solvate potassium ions and modify their solvation structures, enhancing the cycling stability of potassium//potassium symmetric cells.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Kaixi Wang, Shuo Wang, Kwan San Hui, Junfeng Li, Chenyang Zha, Duc Anh Dinh, Zongping Shao, Bo Yan, Zikang Tang, Kwun Nam Hui
Summary: A 3D quasi-parallel structure consisting of dense Pt nanoparticles immobilized on oxygen vacancy-rich NiOx heterojunctions has been developed as an alkaline hydrogen evolution reaction (HER) catalyst. The catalyst exhibits extraordinary HER performance with a low overpotential, high mass activity, and long durability. When combined with NiFe-layered double hydroxide, the assembled alkaline electrolyzer requires extremely low voltage and can operate stably for a long time.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Energy & Fuels
Congkai Sun, Xiong Zhang, Yabin An, Chen Li, Xiaohu Zhang, Haitao Zhang, Xianzhong Sun, Kai Wang, Jianxin Geng, Yanwei Ma
Summary: Prelithiation plays a crucial role in lithium-ion capacitors by addressing the lithium deficiency in the cathode. In this study, a molecularly chemical prelithiation method was reported for the first time for amorphous soft carbon. The prelithiated soft carbon exhibited a low potential and chemical stability, ensuring high reversibility of lithium-ion during charge-discharge process. A lithium-ion capacitor constructed with this prelithiated soft carbon as the anode showed a high capacitance retention of 96.7% after 5000 cycles.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Shunping Ji, Yunshan Zheng, Kwan San Hui, Junfeng Li, Kaixi Wang, Chunyan Song, Huifang Xu, Shuo Wang, Chenyang Zha, Duc Anh Dinh, Zikang Tang, Zongping Shao, Kwun Nam Hui
Summary: By mixing amorphous zinc phosphate with black phosphorus nanomaterials, the agglomeration of black phosphorus can be weakened, and the volume expansion can be reduced, thus improving the stability of the composite electrode in humid air. The optimized amorphous black phosphorus/zinc phosphate composite anode retains a capacity of 369.0 mA h g-1 and reduces the volume expansion to 47% compared to the untreated electrode. Additionally, the amorphous zinc phosphate can absorb water, resulting in good environmental stability even after exposure to humid air for two days, with a reversible capacity of 629.2 mA h g-1.
ENERGY STORAGE MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Xinyi Han, Xiaodong Meng, Shang Chen, Ji Zhou, Manyun Wang, Longhua Sun, Yuncan Jia, Xiaomeng Peng, Hairong Mai, Guangxu Zhu, Jingyu Li, Christopher W. Bielawski, Jianxin Geng
Summary: Phosphorus-doped porous carbon (P-PC) enhances the Li storage performance of red phosphorus (RP) as an anode material in lithium-ion batteries (LIBs) by improving the interfacial properties of the carbon matrix.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Xiaomeng Peng, Jie Zhang, Ji Zhou, Shang Chen, Yuncan Jia, Xinyi Han, Xiaodong Meng, Christopher W. Bielawski, Jianxin Geng
Summary: A novel space-confined polymerization method has been developed for the large-scale synthesis of two-dimensional (2D) sheets of a functional conjugated polymer, poly(3,4-ethylenedioxythiophene) (PEDOT). By confining the monomer to the boundaries of ice crystals using micelles, the polymerization is directed to form 2D PEDOT sheets with high crystallinity and controlled morphology. The resulting 2D PEDOT-based supercapacitors exhibit outstanding performance metrics, including high specific capacitance, excellent rate capability, and outstanding cycling stability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nanoscience & Nanotechnology
Sobin Mathew, Ki-Hyun Park, Youri Han, Kwun Nam Hui, Oi Lun Li, Young-Rae Cho
Summary: A novel metal-free catalyst with remarkable activity in the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) was synthesized. The catalyst exhibited low overpotential when deposited on a conductive nickel foam substrate. Additionally, it displayed lower operating potentials and good stability in an alkaline anion-exchange membrane electrolyzer.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Longhua Sun, Xiaodong Meng, Jie Zhang, Yongqiang Meng, Manyun Wang, Xueqin Zhou, Chao Chen, Ji Zhou, Christopher W. Bielawski, Jianxin Geng
Summary: In this study, a one-pot strategy for synthesizing a N-doped porous graphitic carbon hybridized with oxygen-doped titanium nitride (O-TiN@N-PGC) is described, and the composite exhibits outstanding chemisorption and electrocatalytic effects in sulfur cathodes. The method avoids the use of dangerous and toxic ammonia gas as it employs urea as the nitrogen source. Li-S cells prepared using O-TiN@N-PGC as a sulfur host demonstrate remarkable performance in terms of specific capacity, rate capacity, cycling stability, and high sulfur loading.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Zhenjiang Yu, Hongmei Shan, Yunlei Zhong, Guo Hong, Kwan San Hui, Xia Zhang, Kwun Nam Hui
Summary: This study presents a lithium-free V2O5 cathode for application in polymer-based solid-state batteries (SSBs) with high energy density. The microstructured transport channels and suitable operational voltage enable the utilization of polymer-based solid-state electrolyte (SSE). The V2O5 cathode, constructed through microstructural engineering, exhibits improved electrochemical performance and cycling stability in SSBs.
Article
Physics, Applied
Ji Zhou, Wenbing Gong, Xiaodong Meng, Jiawen Zhang, Xueqin Zhou, Shang Chen, Christopher W. Bielawski, Jianxin Geng
Summary: Replacing a linear ether with a macrocyclic amine in the electrolyte of lithium-sulfur batteries can overcome challenges such as slow cathode kinetics, the shuttle effect, and dendrite growth on the anode. The new electrolyte forms a stable solvation structure that reduces overpotentials for Li2S nucleation and decomposition and suppresses Li dendrite growth and the shuttle effect of polysulfides. Batteries prepared with this electrolyte exhibit outstanding performance.
APPLIED PHYSICS REVIEWS
(2023)