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Zhou W, Chen J, Xu X, Han X, Chen M, Yang L, Hirano SI. Large areal capacity all-in-one lithium-ion battery based on boron-doped silicon/carbon hybrid anode material and cellulose framework. J Colloid Interface Sci 2022; 612:679-88. [PMID: 35032925 DOI: 10.1016/j.jcis.2022.01.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 12/28/2021] [Accepted: 01/03/2022] [Indexed: 01/09/2023]
Abstract
Si, featuring ultra-large theoretical specific capacity, is a very promising alternative to graphite for Li-ion batteries (LIBs). However, Si suffers from intrinsic low electrical conductivity and structural instability upon lithiation, thereby severely deteriorating its electrochemical performance. To address these issues, B-doping into Si, N-doped carbon coating layer, and carbon nanotube conductive network are combined in this work. The obtained Si/C hybrid anode material can be "grown" onto the Cu foil without using any binder and delivers large specific capacity (2328 mAh g-1 at 0.2 A g-1), great rate capability (1296.8 mAh g-1 at 4 A g-1), and good cyclability (76.7% capacity retention over 500 cycles). Besides, a cellulose separator derived from cotton is found to be superior to traditional polypropylene separator. By using cellulose as both the separator host and the mechanical skeleton of two electrodes, a flexible all-in-one paper-like LIB is assembled via a facile layer-by-layer filtration method. In this all-in-one LIB, all the components are integrated together with robust interfaces. This LIB is able to offer commercial-level areal capacity of 3.47 mAh cm-2 (corresponding to 12.73 mWh cm-2 and 318.3 mWh cm-3) and good cycling stability even under bending. This study offers a new route for optimizing Si-based anode materials and constructing flexible energy storage devices with a large areal capacity.
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An W, He P, Che Z, Xiao C, Guo E, Pang C, He X, Ren J, Yuan G, Du N, Yang D, Peng DL, Zhang Q. Scalable Synthesis of Pore-Rich Si/C@C Core-Shell-Structured Microspheres for Practical Long-Life Lithium-Ion Battery Anodes. ACS Appl Mater Interfaces 2022; 14:10308-10318. [PMID: 35175030 DOI: 10.1021/acsami.1c22656] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Silicon/carbon (Si/C) composites have rightfully earned the attention as anode candidates for high-energy-density lithium-ion batteries (LIBs) owing to their advantageous capacity and superior cycling stability, yet their practical application remains a significant challenge. In this study, we report the large-scale synthesis of an intriguing micro/nanostructured pore-rich Si/C microsphere consisting of Si nanoparticles tightly immobilized onto a micron-sized cross-linked C matrix that is coated by a thin C layer (denoted P-Si/C@C) using a low-cost spray-drying approach and a chemical vapor deposition process with inorganic salts as pore-forming agents. The as-obtained P-Si/C@C composite has high porosity that provides sufficient inner voids to alleviate the huge volume expansion of Si. The outer smooth and robust C shells strengthen the stability of the entire structure and the solid-electrolyte interphase. Si nanoparticles embedded in a microsized cross-linked C matrix show excellent electrical conductivity and superior structural stability. By virtue of structural advantages, the as-fabricated P-Si/C@C anode displays a high initial Coulombic efficiency of 89.8%, a high reversible capacity of 1269.6 mAh g-1 at 100 mA g-1, and excellent cycle performance with a capacity of 708.6 mAh g-1 and 87.1% capacity retention after 820 cycles at 1000 mA g-1, outperforming the reported results of Si/C composite anodes. Furthermore, a low electrode swelling of 18.1% at a high areal capacity of 3.8 mAh cm-2 can be obtained. When assembled into a practical 3.2 Ah cylindrical cell, extraordinary long cycling life with a capacity retention of 81.4% even after 1200 cycles at 1C (3.2 A) and excellent rate performance are achieved, indicating significant advantages for long-life power batteries in electric vehicles.
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Affiliation(s)
- Weili An
- BTR New Material Group Co., Ltd., Shenzhen 518107, P. R. China
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Peng He
- BTR New Material Group Co., Ltd., Shenzhen 518107, P. R. China
| | - Zongzhou Che
- BTR New Material Group Co., Ltd., Shenzhen 518107, P. R. China
| | - Chengmao Xiao
- BTR New Material Group Co., Ltd., Shenzhen 518107, P. R. China
| | - Eming Guo
- BTR New Material Group Co., Ltd., Shenzhen 518107, P. R. China
| | - Chunlei Pang
- BTR New Material Group Co., Ltd., Shenzhen 518107, P. R. China
| | - Xueqin He
- BTR New Material Group Co., Ltd., Shenzhen 518107, P. R. China
| | - Jianguo Ren
- BTR New Material Group Co., Ltd., Shenzhen 518107, P. R. China
| | - Guohui Yuan
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Ning Du
- State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Deren Yang
- State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Dong-Liang Peng
- Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, Fujian, P. R. China
| | - Qiaobao Zhang
- Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, Fujian, P. R. China
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Zhou W, Chen J, Xu X, Han X, Chen M, Yang L, Hirano SI. Interface Engineering of Silicon and Carbon by Forming a Graded Protective Sheath for High-Capacity and Long-Durable Lithium-Ion Batteries. ACS Appl Mater Interfaces 2021; 13:15216-15225. [PMID: 33760583 DOI: 10.1021/acsami.1c00107] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Silicon is one of the most promising anode materials for lithium-ion batteries, whereas its low electronic conductivity and huge volumetric expansion upon lithiation strongly influence its prospective applications. Herein, we develop a facile method to introduce a graded protective sheath onto the surface of Si nanoparticles by utilizing lignin as the carbon source and Ni(NO3)2 as the auxiliary agent. Interestingly, the protective sheath is composed of NiSi2, SiC, and C from the interior to the exterior, thereby guaranteeing excellent compatibility between the neighboring components. Thanks to this unique coating layer, the obtained nanocomposite delivers a large reversible specific capacity (1586.3 mAh g-1 at 0.2 A g-1), excellent rate capability (879.4 mAh g-1 at 5 A g-1), and superior cyclability (88.2% capacity retention after 500 cycles at 1 A g-1). Such great performances are found to derive from a slight volumetric expansion, high Li+ ion diffusion coefficients, good interface stability, and fast electrochemical kinetics. These properties are obviously superior to those of their counterparts, benefiting from the interface engineering. This study offers new insights into constructing high-capacity and long-durable electrode materials for energy storage.
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Affiliation(s)
- Weijun Zhou
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Jizhang Chen
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Xinwu Xu
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Xiang Han
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Minfeng Chen
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Li Yang
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
- Hirano Institute for Materials Innovation, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Shin-Ichi Hirano
- Hirano Institute for Materials Innovation, Shanghai Jiao Tong University, Shanghai 200240, China
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Hu J, Wang Q, Fu L, Rajagopalan R, Cui Y, Chen H, Yuan H, Tang Y, Wang H. Titanium Monoxide-Stabilized Silicon Nanoparticles with a Litchi-like Structure as an Advanced Anode for Li-ion Batteries. ACS Appl Mater Interfaces 2020; 12:48467-48475. [PMID: 33052650 DOI: 10.1021/acsami.0c10418] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Silicon (Si) has been considered as the most potential anode material for next-generation high-energy density lithium-ion batteries (LIBs) because of its extremely high theoretical capacity. However, the performance deterioration caused by volume change and low electrical conductivity of active Si particles greatly limit its commercial use. Here, we designed a nonstoichiometric TiOx-coated Si anode with a litchi-like structure, in which Si-Ti and Si-O dual bonds are expected to form between the Si core and TiOx shell. This unique structure plays a major role in preventing the volume expansion and improving the electrical conductivity of the Si anode. The as-prepared TiOx-coated Si anode could exhibit excellent cycling stability after 1000 cycles at 1000 mA g-1 with a relatively small capacity decay rate of ∼0.04% per cycle, which can be comparable to most of the modified Si anodes in references. This strategy of surface regulating on the Si anode could be extended to other electrodes with large volume expansion during cycling in LIBs for achieving competitive electrochemical properties.
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Affiliation(s)
- Jing Hu
- Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Qi Wang
- Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Liang Fu
- Collaborative Innovation Center for Green Development in Wuling Mountain Areas, Yangtze Normal University, Fuling 408100, P. R. China
| | - Ranjusha Rajagopalan
- Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Yan Cui
- Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Hong Chen
- School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, Guangdong, P. R. China
| | - Hongyan Yuan
- Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Yougen Tang
- Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Haiyan Wang
- Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
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