Article
Chemistry, Physical
Stavros X. Drakopoulos, Thomas Cowell, Emma Kendrick
Summary: Low-environmental-impact binder systems are used for graphite-SiO (x) anodes with different physical characteristics. The study investigates the relationship between mass loading, porosity, state of charge, and ohmic and charge transfer resistances. The contribution of SiO (x) to reversible capacity decreases over cycles. An empirical model is presented to describe cycle life based on porosity and mass loading. The study explores the correlation between physical and electrochemical properties for maximum cycle life and faster screening of electrode formulations.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Chemical
Yu Zhang, Xiaoyu Wang, Lei Ma, Ruixian Tang, Xiao Zheng, Fangfang Zhao, Gen Tang, Yue Wang, Aimin Pang, Wei Li, Liangming Wei
Summary: The PDA-PAA composite binder with a three-dimensional network structure provides strong adhesion between active materials and the current collector, resulting in improved capacity and cycle performance of Si anodes in lithium batteries.
Article
Chemistry, Physical
Sathish Rajendran, Haoyu Liu, Stephen E. Trask, Baris Key, Andrew N. Jansen, Marco-T F. Rodrigues
Summary: Development of new polymeric binders can help enable the use of silicon-rich anodes in Li-ion batteries. These polymers can improve interfacial interactions and mechanical properties, but may also accelerate cell degradation. Our work demonstrates that redox-active conductive binders can be detrimental to cell performance, and careful experimental validation under realistic conditions is necessary for evaluating new polymers.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Lucas Huet, Philippe Moreau, Nicolas Dupre, Thomas Devic, Lionel Roue, Bernard Lestriez
Summary: The physical crosslinking of polymeric binders through coordination chemistry improves the electrochemical performance of silicon-based negative electrodes by stabilizing the electrode and the solid electrolyte interphase (SEI) layer. Scanning electron microscopy coupled with energy dispersive X-ray spectroscopy reveals the homogeneous coordination of carboxylated binder with Zn cations and its layering on the silicon surface. The SEI formed after the first cycle is denser with Zn-coordinated binder and preferentially observed on binder-depleted zones. This results in a lower SEI impedance, a higher first cycle coulombic efficiency, and a 40% improvement of capacity retention after 50 cycles for highly loaded electrodes of over 6 mAh cm(-2).
Article
Nanoscience & Nanotechnology
Ji Hyun Han, Kyu Hang Shin, Yun Jung Lee
Summary: A freestanding cellulose acetate-carbon nanotube (CA-CNT) film electrode was introduced for highly flexible, high-energy lithium-ion batteries (LIBs), with straightforward washing removing CA while sustaining the fibrous CNT network. The large-scale production potential of the film electrode was highlighted, along with the superior electrochemical performance and high flexibility achieved even at high active material loading. By stacking six sheets of the freestanding film electrode, a high capacity of 5.4 mA h cm(-2) was demonstrated, showcasing stable operation under extreme deformation and the potential for wearable gear applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Haokun Yan, Cunyuan Pei, Yan Zhang, Yiwei Zhao, Xun Chen, Zongping Zhang, Dongmei Zhang, Bing Sun, Huijuan Ma, Shibing Ni
Summary: Li3VO4 anodes were synthesized using lithium polyacrylate as a dual-functional source and a porous carbon decorating skeleton. The synthesized anodes exhibited impressive capacity and enhanced rate performance.
Article
Nanoscience & Nanotechnology
Rong Li, Chang-Jiang Bai, Hao Liu, Li-Wen Yang, Yong Ming, Chun-Liu Xu, Zhou Wei, Yang Song, Gong-Ke Wang, Yu-Xia Liu, Ben-He Zhong, Yan-Jun Zhong, Zhen-Guo Wu, Xiao-Dong Guo
Summary: Binders play a crucial role in lithium-ion batteries, and a polyacrylic acid-modified binder designed in this study improved the electrochemical stability of Li[Ni0.8Co0.1Mn0.1]O-2. The enhancement in stability was attributed to a chemical reaction between polyacrylic acid and residual lithium on the surface during cycling, forming a beneficial coating layer.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Wenshuai Lang, Chuang Yue, Man Dang, Gang Wang, Yimin Chen, Fang Hu, Zhiming Liu, Jie Shu
Summary: Three-dimensional graphene networks were successfully fabricated on nickel foam using chemical vapor deposition technique, followed by the deposition of amorphous Ge layer using radio frequency magnetron sputtering method. The Ge-decorated graphene networks exhibited improved electrochemical performance as anodes for lithium-ion batteries compared to directly coated two-dimensional Ge nanoelectrodes on bare Ni foam. The optimized 3D Ge@Gr hybrid electrode achieved significantly enhanced electrochemical cyclability for 1500 long-term cycles under higher current density of 1.2 mA cm-2. The interconnected 3D graphene with enlarged surface area effectively buffered the volume change of the Ge anode and improved electrical/ionic conductivity, resulting in superb stable cyclability.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Song Lin, Fangfang Wang, Ruoyu Hong
Summary: Researchers have developed a polymeric binder synthesized from polyacrylic acid and polymerized 13-cyclodextrin to improve the capacity and cycling performance of silicon anodes in lithium-ion batteries, effectively mitigating capacity decay.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Multidisciplinary Sciences
Yuhgene Liu, Congcheng Wang, Sun Geun Yoon, Sang Yun Han, John A. A. Lewis, Dhruv Prakash, Emily J. J. Klein, Timothy Chen, Dae Hoon Kang, Diptarka Majumdar, Rajesh Gopalaswamy, Matthew T. T. McDowell
Summary: Non-pre-lithiated aluminum-foil-based negative electrodes with engineered microstructures exhibit long-term cycling stability in all-solid-state lithium-ion batteries, providing a possible route for improving high-energy-density batteries.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Jijun Lu, Siliang Liu, Junhao Liu, Guoyu Qian, Dong Wang, Xuzhong Gong, Yida Deng, Yanan Chen, Zhi Wang
Summary: An efficient and high-value recycling strategy for photovoltaic silicon waste is proposed in this study, converting it into stable silicon nanowire electrodes for lithium-ion batteries. The resulting electrode exhibits high initial Coulombic efficiency and robust cycle stability, potentially promoting the economic, environmentally friendly, and sustainable development of renewable energy.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Muyao Han, Xu Liang, Chengyu Han, Chaoyi Zhou, Qianxin Xiang, Yu Cao, Jie Sun
Summary: Phosphorus is a promising anode material with high capacity, low lithium-ion diffusion barrier, and appropriate lithiation potential. However, the problems of huge volume expansion and soluble intermediates restrict its performance. A robust, cross-linked binary polymeric PAA/CMC binder is designed, which has good Li+ conductivity and is not reactive with LixpPs. The volume expansion after lithiation of P/CNT-PAA/CMC is only 6%.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Mechanics
Sameep Rajubhai Shah, Luize Scalco de Vasconcelos, Kejie Zhao
Summary: Mechanical failure is a barrier in deploying high-capacity electrodes for Li-ion batteries, and computational prediction of the electrochemomechanical behavior of high-capacity electrodes is a significant challenge. A computational framework is developed to simulate the electrochemical response of batteries considering large deformation, mechanical stresses, and dynamic material properties.
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
(2022)
Article
Chemistry, Physical
Junho Ahn, Hyeon-Gyun Im, Yongseok Lee, Dasom Lee, Hyekyeong Jang, Youngseok Oh, Kyeongwoon Chung, Teahoon Park, Moon-Kwang Um, Jin Woo Yi, Jongsoon Kim, Dong Jun Kang, Jung-keun Yoo
Summary: Researchers have developed a new organosilicon-type binder (S-binder) that improves the adhesion, elasticity, and flexibility of the electrode in lithium-ion batteries, resulting in significantly improved electrochemical performance.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yoga Trianzar Malik, Seo-Yeon Shin, Jin Il Jang, Hyung Min Kim, Sangho Cho, Young Rag Do, Ju-Won Jeon
Summary: In this study, a self-healable and highly stretchable multifunctional binder for Si anodes is designed. The binder can repair cracks and damages of Si anodes during cycling, and the self-healing ability of the Si anode is demonstrated under practical battery operating conditions. The self-healable Si anode delivers a reversible capacity of 2312 mAh g(-1) after 100 cycles and shows excellent rate capability.
