Article
Chemistry, Multidisciplinary
Yifei Shen, Xiaohui Shen, Mei Yang, Jiangfeng Qian, Yuliang Cao, Hanxi Yang, Yang Luo, Xinping Ai
Summary: A new design strategy for prelithiation solution has been proposed to successfully prelithiate graphite anodes by selecting a suitable solvent to tune the redox potential of prelithiation reagent and prevent solvent co-intercalation. The developed prelithiation solution, lithium biphenylide/2-methyl tetrahydrofuran, accurately prelithiates graphite anodes to the desired state in a few minutes without damaging the lattice structure, leading to significantly improved performance in full cells.
ADVANCED FUNCTIONAL MATERIALS
(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.
Review
Chemistry, Multidisciplinary
Wei Zhong, Ziqi Zeng, Shijie Cheng, Jia Xie
Summary: Prelithiation technology is one of the most effective methods to compensate for the loss of active lithium. This review analyzes the factors inducing lithium loss and investigates the mechanisms and effects of prelithiation. The emerging advanced prelithiation technologies and key issues are systematically summarized. Hybrid replenishment and lithium storage technologies are proposed to provide a reference for developing prelithiation technology.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Energy & Fuels
Yang Luo, Yicheng Deng, Yifei Shen, Hui Li, Yuliang Cao, Xinping Ai
Summary: Chemical prelithiation is an efficient strategy to compensate for the initial capacity loss of Li-ion batteries. However, there are difficulties in applying prelithiation reagents to commercially used graphite anodes. This study demonstrates a new prelithiation solution for graphite anodes that overcomes these difficulties and offers practical convenience for Li-ion battery manufacture.
Article
Engineering, Environmental
Hengtao Shen, Yongling An, Quanyan Man, Jingyan Wang, Chengkai Liu, Baojuan Xi, Shenglin Xiong, Jinkui Feng, Yitai Qian
Summary: In this work, controlled chemical prelithiation is used to improve the performance of two-dimensional siloxene nanosheet as an anode for lithium-ion batteries. The results show that a 15 min prelithiation process can achieve uniform SEI film and high coulombic efficiency, leading to enhanced performance of siloxene anode. The prelithiated siloxene anode exhibits high ICE, superior rate performance, and stable cycling performance, with an enhanced capacity retention of 94.3% when coupled with 5 V-class LiNi0.5Mn1.5O4 cathodes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Xiao-Dong Li, Yu-Ming Zhao, Yi-Fan Tian, Zhuo-Ya Lu, Min Fan, Xu-Sheng Zhang, He Tian, Quan Xu, Hong-Liang Li, Yu-Guo Guo
Summary: In this study, a Li/B co-doping strategy was developed to enhance the initial Coulombic efficiency and cycling stability of SiOx@C anodes, while alleviating volume expansion and pulverization. The findings are significant for the practical application of high-energy-density lithium-ion batteries.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Bin Liu, Jie Liu, Cheng Zhong, Wenbin Hu
Summary: By solid-phase Mg doping reaction, the performance of silicon suboxide (SiOx) as an anode material for lithium-ion batteries can be improved. Magnesium (Mg) can reduce SiO2 in SiOx to Si and form MgSiO3 or Mg2SiO4, which are mainly distributed on the surface of SiOx, suppressing lithium-ion loss and enhancing the initial Coulombic efficiency (ICE) of SiOx. However, this reaction sacrifices the capacity of SiOx. By controlling the reaction process, the phase composition, proportion, and morphology of Mg-doped SiOx can be tuned to improve its performance.
Article
Nanoscience & Nanotechnology
Qing Sun, Jing Li, Chongyang Hao, Lijie Ci
Summary: SiOx-based anode materials are promising for high capacity and acceptable volume change, but suffer from low Coulombic efficiency. This work proposes a strategy of high-temperature initial charge and overcapacity prelithiation to improve the Coulombic efficiency and capacity retention of SiOx-based batteries.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Yi Sun, Kuanxin Zhang, Run Chai, Yueda Wang, Xianhong Rui, Kang Wang, Huaxia Deng, Hongfa Xiang
Summary: A novel strategy is proposed to construct an artificial hybrid solid electrolyte interface (SEI) layer on a prelithiated SiOx anode, using a spontaneous chemical reaction with SbF3. The preformed artificial SEI layer improves initial Coulombic efficiency and enhances capacity retention and rate capability for modified SiOx. Furthermore, a full cell using a pre-treated anode demonstrates high initial Coulombic efficiency and capacity retention after 100 cycles. This study provides valuable insights into obtaining stable interfaces for high-energy lithium-ion batteries.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Physical
Hongqiang Zhang, Jun Cheng, Hongbin Liu, Deping Li, Zhen Zeng, Yuanyuan Li, Fengjun Ji, Yixuan Guo, Youri Wei, Shuai Zhang, Tiansheng Bai, Xiao Xu, Ruiqin Peng, Jingyu Lu, Lijie Ci
Summary: To meet the demand for high-energy-density batteries, researchers have focused on alloy-type and conversion-type anode materials. However, the initial cycling process leads to irreversible lithium loss, reducing the energy density. Various prelithiation techniques have been developed to compensate for the loss, including cathode prelithiation which has shown promising results. This review discusses recent advances in anode and cathode prelithiation and the challenges that need to be overcome for practical applications.
ADVANCED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Asif Raza, Jae Yup Jung, Cheol-Ho Lee, Byung Gon Kim, Jeong-Hee Choi, Min-Sik Park, Sang-Min Lee
Summary: The study introduces an affordable and scalable synthesis method for double-layered SiOx/Mg2SiO4/SiOx composites, which effectively improves the reversibility and volume variations of silicon-based anode materials during cycling. The highly porous SiOx outer layer and Mg2SiO4 inner layer in the material design offer abundant active sites and restrain volume expansion, leading to high initial Coulombic efficiency and stable cycle performance.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Nantao Chen, Yiyang Lv, Youlan Zou, Zhuoran Ao, Yuxing Huang, Haiyan Zou
Summary: Low initial coulombic efficiency (ICE) and poor long-term cycling performance of silicon (Si) anode for lithium-ion batteries (LIBs) are addressed by synthesizing corn-like Si with high ICE and stable cycling performance through a simple and low-cost method. The prelithiated Si electrode maintains its original structure during cycling, indicating the potential of using natural clay as a silicon source for LIB production.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Yang Li, Yong Qian, Jie Zhou, Ning Lin, Yitai Qian
Summary: A molten-salt-induced thermochemical prelithiation strategy was utilized to enhance the initial Coulombic efficiency (ICE) of SiOx anode by regulating the Si/O ratio. The prelithiation degree can be adjusted by varying the coating amount of LiNH2 layer, leading to significant improvement in ICE. This approach shows potential for improving energy density and reducing interface impedance in lithium-ion batteries.
Article
Chemistry, Multidisciplinary
Jinkwan Choi, Hyangsoo Jeong, Juyoung Jang, A-Re Jeon, Inyeong Kang, Minhyung Kwon, Jihyun Hong, Minah Lee
Summary: The initial Coulombic efficiency of the anode is crucial for the energy density of a Li-ion battery, and a blend of graphite and Si/SiOx is the most practical way to balance capacity and cycle life, but its low ICE limits its commercial viability. A chemical prelithiation method can maximize the ICE of the blend anodes, leading to a near-ideal energy density in a full cell.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Dong Jae Chung, Donghan Youn, Ji Young Kim, Won Joon Jeong, Soohwan Kim, Donghyeok Ma, Tae Rim Lee, Seung Tae Kim, Hansu Kim
Summary: The topological optimization of prelithiated SiO materials was shown to effectively improve both the initial coulombic efficiency (ICE) and capacity retention. By using laser-assisted atom probe tomography and other techniques, two exothermic reactions related to microstructural evolution were identified as key factors in optimizing the domain size and topological arrangements of the Si active phase and Li2SiO3 buffer phase in prelithiated SiO materials. The optimized prelithiated SiO, heat-treated at 650 degrees C, demonstrated higher capacity retention and lower thickness changes after 300 cycles, along with high ICE and reversible capacity.
Article
Chemistry, Physical
Ping Wang, Yu-Jie Guo, Wan-Ping Chen, Hui Duan, Huan Ye, Hu-Rong Yao, Ya-Xia Yin, Fei-Fei Cao
Summary: A self-supported hard carbon electrode from fungus-pretreated basswood shows improved rate capability and cycling stability. The electrode demonstrates higher capacity retention and initial Coulombic efficiency compared to conventional hard carbon derived from basswood. The study also provides insights into the storage mechanism of hard carbon.
Article
Multidisciplinary Sciences
Ji-Lei Shi, Hang Sheng, Xin-Hai Meng, Xu-Dong Zhang, Dan Lei, Xiaorui Sun, Hongyi Pan, Junyang Wang, Xiqian Yu, Chunsheng Wang, Yangxing Li, Yu-Guo Guo
Summary: By using Vegard's Slope as a guide for selecting sintering aids, size-controlled single-crystalline Ni-rich (SCNR) cathodes were successfully synthesized, which exhibit higher energy density and improved safety. The synthesis of large SCNR cathodes was achieved by promoting grain boundary migration and reducing surface energy through the migration of sintering aids. The fabricated SCNR cathodes demonstrated high electrode press density, volumetric energy density, and capacity retention, making them suitable for electric vehicles and portable devices.
NATIONAL SCIENCE REVIEW
(2023)
Article
Chemistry, Multidisciplinary
Enhui Wang, Jing Wan, Yu-Jie Guo, Qianyu Zhang, Wei-Huan He, Chao-Hui Zhang, Wan-Ping Chen, Hui-Juan Yan, Ding-Jiang Xue, Tiantian Fang, Fuyi Wang, Rui Wen, Sen Xin, Ya-Xia Yin, Yu-Guo Guo
Summary: In this study, the interface stability of sodium ion batteries (SIBs) is improved by suppressing the continuous growth of the solid-electrolyte interphase (SEI) from the perspective of mitigating electron leakage. Two types of SEI layers with different growth behaviors were created through the additive strategy, and their physicochemical features and electronic properties were extensively investigated. Experimental and calculational analyses demonstrated that the suppressed growth SEI layer exhibits both low electron driving force and high electron insulation ability, mitigating electron leakage and enhancing electrochemical performance.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Ailing Yang, Chao Yang, Kai Xie, Sen Xin, Zheng Xiong, Kaiyuan Li, Yu-Guo Guo, Ya You
Summary: This study evaluated the safety of organic electrolytes by characterizing the thermochemistry of various types of single-solvent electrolytes using cone calorimetry. The results showed that a combination of polyfluorinated solvents and high boiling point solvents can compose nonflammable electrolytes, providing new insights for the design of high safety organic electrolytes.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Hu-Rong Yao, Xin-Guang Yuan, Xu-Dong Zhang, Yu-Jie Guo, Lituo Zheng, Huan Ye, Ya-Xia Yin, Jiaxin Li, Yuming Chen, Yiyin Huang, Zhigao Huang, Yu-Guo Guo
Summary: The air storage stability of O3-type layered oxides NaTmO2 can be significantly improved by introducing a weak orbital hybridization between transition metal and oxygen layers, resulting in better electrochemical performance and less active Na loss.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Min Yan, Chen-Yang Wang, Min Fan, Yuying Zhang, Sen Xin, Junpei Yue, Xian-Xiang Zeng, Jia-Yan Liang, Yue-Xian Song, Ya-Xia Yin, Rui Wen, Zhitian Liu, Li-Jun Wan, Yu-Guo Guo
Summary: A new strategy is demonstrated in this study to stabilize the anode electrochemistry of rechargeable lithium-metal batteries by applying a Mg3N2-decorated functional separator onto the Li-metal surface. The inorganic interlayer effectively suppresses parasitic reactions at the Li-electrolyte interface and contributes to dendrite-free operation of the Li-metal anode. The Li||LiNi0.6Co0.2Mn0.2O2 battery based on the functional separator delivers a reversible capacity of 129 mAh g(-1) after 600 cycles at 0.5 C, corresponding to a capacity retention of 75.9%.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jia-Yan Liang, Yanyan Zhang, Sen Xin, Shuang-Jie Tan, Xin-Hai Meng, Wen-Peng Wang, Ji-Lei Shi, Zhen-Bo Wang, Fuyi Wang, Li-Jun Wan, Yu-Guo Guo
Summary: By introducing an inorganic anion switch into the organic-anion-enriched primary solvation sheath (PSS), a low-swelling, Li3PO4-rich solid electrolyte interphase (SEI) can be formed, suppressing parasitic reactions and solvent co-intercalation, and improving the efficiency of reversible Li+ (de)intercalation and stable structural evolution of graphite anode in high-energy Li-ion batteries at a low temperature of -20 degrees C.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Qiang Ma, Sha Fu, An-Jun Wu, Qi Deng, Wei-Dong Li, Dan Yue, Bing Zhang, Xiong-Wei Wu, Zhen-Ling Wang, Yu-Guo Guo
Summary: Bidirectionally functional polymer electrolytes (BDFPE) were designed to simultaneously handle the interface issues faced by anodes and cathodes. By constructing the BDFPE, a smooth and dendrite-free lithium deposition is enabled for Li||Li symmetry cells, and Li||LiNi0.6Co0.2Mn0.2O2 batteries demonstrate favorable cycling and rate capability with a stable CEI layer. The study provides a promising design strategy for high energy density lithium metal batteries.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Yanan Xu, Kai Wang, Xudong Zhang, Yibo Ma, Qifan Peng, Yue Gong, Sha Yi, Hua Guo, Xiong Zhang, Xianzhong Sun, Hongcai Gao, Sen Xin, Yu-Guo Guo, Yanwei Ma
Summary: A 10-nm polydopamine coating on the residue-removed garnet surface is shown to stabilize the modified garnet filler and prevent the generation of alkaline residues, allowing PVDF to remain intact. Metal-nitrogen bonding between the La atoms of garnet and the amino groups of polydopamine promotes stronger adsorption of Li ions, enabling an efficient ion-percolation network for Li-ion conduction through the garnet-polydopamine interface. The composite electrolyte demonstrates an effective room-temperature Li+ conductivity of 1.52 x 10(-4) S cm(-1) and a high cutoff voltage of up to 4.7 V versus Li+/Li to support stable operation of all-solid-state Li-LiCoO2 batteries.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Juan Zhang, Yi-Fan Tian, Sen Xin, Yu-Guo Guo
Summary: Lithium-ion batteries have had a profound impact on global energy transition. To achieve high-energy rechargeable batteries, researchers have improved the energy-storage capability by encapsulating nonintercalation electrode materials into a three-dimensional conductive framework. This confinement preserves the structural and interfacial integrity, suppresses parasitic reactions, and enables efficient charge transfer.
ACCOUNTS OF MATERIALS RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Ya-Hui Wang, Xu-Sheng Zhang, Cai-Cai Li, Hao Zeng, Zhe Chen, Liang Zhang, Jin-Chi Zheng, Yuan Luo, Sen Xin, Yu-Guo Guo
Summary: This study demonstrates the improved interfacial contact and charge transfer stability between a sulfide electrolyte and Li metal, achieved by forming a Li+-conductive interlayer on the surface of the electrolyte. This inhibition of electrolyte decomposition and dendrite growth enables stable cycling performance and high current density in Li-metal batteries.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Yu-Ying Zhang, Chao-Hui Zhang, Yu-Jie Guo, Min Fan, Yao Zhao, Hua Guo, Wen-Peng Wang, Shuang-Jie Tan, Ya-Xia Yin, Fuyi Wang, Sen Xin, Yu-Guo Guo, Li-Jun Wan
Summary: By optimizing the volume ratio of two conventional linear ether solvents, a refined electrolyte for anode-free batteries has been developed, enabling high energy density and long cycle life. The addition of inorganic fluorides has a significant impact on the electrodeposition of sodium metal and passivation of the anode.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Yu-Ting Xu, Sheng-Jia Dai, Xiao-Feng Wang, Xiong-Wei Wu, Yu-Guo Guo, Xian-Xiang Zeng
Summary: This study reports an ion-percolating electrolyte membrane that acts as a stable Li+ reservoir, ensuring efficient and uniform Li+ transport and effectively solving the problem of lithium dendrites in lithium metal batteries, greatly improving the cycling stability and Coulombic efficiency of the batteries.
Article
Electrochemistry
Xue-Ting Li, Jia Chou, Yu-Hui Zhu, Wen-Peng Wang, Sen Xin, Yu-Guo Guo
Summary: This perspective article reviews strategies to broaden the electrochemical window of aqueous electrolytes and achieve high-energy aqueous batteries. It highlights recent findings on utilizing deuterium dioxide-based aqueous electrolyte to stabilize aqueous Li storage electrochemistry, which exhibits a wider electrochemical window and inhibits detrimental parasitic processes.