JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Yuhao Sun,Huangjie Yang,Jing Li,Jianbin Li,Xiangqun Zhuge,Yurong Ren,Zhengping Ding
The increased demand for energy storage devices has led to an explosive increase in spent lithium-ion batteries. However, traditional pyrometallurgy/hydrometallurgy recycling processes require high-temperature treatment, high-concentration acid leaching with reductant (H 2 O 2 ), and a complex procedure, which exist energy and environmental issues . Herein, combining the advantages of pyrometallurgy and hydrometallurgy method, we proposed a new large-scale battery recycling strategy with industrial application prospects. In this strategy, lithium element is preferentially leached, and Ni 0.6 Co 0.2 Mn 0.2 (OH) 2 and LiNi 0.6 Co 0.2 Mn 0.2 O 2 is directly synthesized by coprecipitation and calcination process using the high-concentration transition metal leachate (∼1.0 M). So, the step separation of Li, Ni, Co, and Mn element is avoided, which makes the recycling procedure shorter than hydrometallurgy . Moreover, during the leaching process, low-concentration acid is used, and reductant (H 2 O 2 ) are not required. By optimizing the experimental conditions, the recycling rate of Li, Ni, Co, and Mn is 94.47%, 99.36%, 99.28%, 99.56%. The regenerated LiNi 0.6 Co 0.2 Mn 0.2 O 2 has comparable electrochemical properties to commercial LiNi 0.6 Co 0.2 Mn 0.2 O 2 with 163 mAh g −1 capacity at 1C current density and 85.08 % capacity remains after 300 cycles. After calculation, the recycling strategy can obtain an economic benefit of 20,667 $ per ton of recycling spent ternary cathode powder. These results show that this method has spacious prospects for the battery recycling market, which can be further extended to industrial application for recycling spent ternary LIBs .
研究领域:
材料科学
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环境科学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Fengyin Zhou,Jianye Ma,Hongya Wang,Muya Cai,Xin Qu,Jingjing Zhao,Danfeng Wang,Yuqi Cai,Dihua Wang,Huayi Yin
The utilization of biomass-assisted pyrolysis in the recycling of spent lithium-ion batteries has emerged as a promising and reliable process. This article furnishes theoretical underpinnings and analytical insights into this method, showcasing sawdust pyrolysis reduction as an efficient means to recycle spent LiMn 2 O 4 and LiNi 0.6 Co 0.2 Mn 0.2 O 2 batteries. Through advanced thermogravimetry-gas chromatography-mass spectrometry analysis complemented by traditional thermodynamic demonstration, the synergistic effects of biomass pyrolysis reduction are elucidated, with minor autodecomposition and major carbothermal and gasthermal reduction pathways identified. The controlled manipulation of transition metals has demonstrated the capability to modulate surface pyrolysis gas catalytic reactions and facilitate the preparation of composite materials with diverse morphologies. Optimization of process conditions has culminated in recovery efficiency exceeding 99.0 % for LiMn 2 O 4 and 99.5 % for LiNi 0.6 Co 0.2 Mn 0.2 O 2 . Economic and environmental analyses underscore the advantages of biomass reduction and recycling for these two types of spent LIBs: low energy consumption, environmental compatibility, and high economic viability.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Yixi Kuai,Feifei Wang,Jun Yang,Zhixin Xu,Hongping Li,Xiaochuan Xu,Yanna Nuli,Jiulin Wang
The high-voltage Ni-rich LiNixCoyMnzO2 cathode materials attract attention due to their high capacity and relatively low cost. However, the undesired instability originating from side reactions with liquid electrolytes at elevated temperatures still hinders their practical application. This research aims to build a stable interface between cathode and electrolyte. We use the coupling agent KH570 to induce vinyl ethylene carbonate (VEC) monomers to in situ polymerize on the surface of LiNi0.6Co0.2Mn0.2O2 (NCM622) to form a uniform, ultrathin (∼12 nm), and highly ion-conductive poly(vinyl ethylene carbonate) (PVEC) solid polymer electrolyte layer. The modified cathode material exhibits significant improvement in rate performance and cycling stability up to 4.5 V at elevated temperatures. Scanning electron microscopy and X-ray diffraction techniques prove that the flexible polymer coating layer effectively suppresses the mechanical degradation and crystal structure changes during cycling.
研究领域:
材料科学
·
电化学
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储能技术
·
表面工程
✓ 已验证
DOI
高影响因子
Materials Today Energy
·
2025
·
IF 8.6
Yilian Song,Haoran Li,Kang Dong,Youjun Xing,Minghui Zhang,Mingzhu Yang,Xiang Huang,Wei Liu,Yongcheng Jin
The pursuit of high-voltage nickel-based layered terminal oxide materials (NCM) has gained significant research momentum owing to their compelling combination of cost-effectiveness and high energy density. However, critical challenges persist in mitigating parasitic interfacial reactions, electrolyte oxidative decomposition, and structural degradation mechanisms under elevated operating voltages (>4.3 V vs. Li/Li + ). Here, we propose a synergistic dual-additive electrolyte strategy by adding tris(pentafluorophenyl)borane (TPFPB) and lithium difluoro(oxalato)borate (LiDFOB) to a conventional carbonate-based electrolyte, aiming to enhance the performance of high-voltage LiNi 0.6 Co 0.2 Mn 0.2 O 2 (NCM622). Theoretical and experimental analyses show that LiDFOB reduces harmful side products (e.g., HF, PF 5 ) by inhibiting LiPF 6 decomposition, while TPFPB's rigid structure promotes a uniform and dense cathode electrolyte interface (CEI) film on the cathode. The two additives work synergistically to enabling the Li/NCM622 half-cells to maintain a capacity retention of up to 76.8 % after 500 cycles at 1C under 4.5 V high voltage, while the cell prepared with an electrolyte without any additives only retained 7.6 % capacity after cycling. The synergistic strategy employing TPFPB and LiDFOB to enhance the high-voltage cycling stability provides a promising practical feasibility of high-voltage batteries for industrial application.
研究领域:
电化学
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能源材料
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锂离子电池
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表面与界面工程
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电解液化学
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
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2023
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IF 1.5
Ruijia Diao,G.P. Nayaka,Chengyi Zhu,Xiaohua Yu,Yannan Zhang,Ju Rong,Xiao Wang,Yingjie Zhang,Peng Dong,Mingyu Zhang,Xi Yang,Zhaolin Zhan
A facile hydrothermal method is successfully developed for the synthesis of CePO4 coated LiNi0.6Co0.2Mn0.2O2 (NCM 622) cathodes. The as-prepared samples are characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), electrochemical workstation, electrochemical impedance spectroscopy (EIS) and inductively coupled plasma emission spectrometry (ICP). Compared to the pristine NCM 622 cathode, the rate capacity and cyclic performance are significantly improved after coating. Even under a 10 C charge/discharge rate, the initial discharge capacity of the 3.0-NCM sample is up to 95.2 mAh . g -1 . Furthermore, the as- prepared 3.0-NCM sample exhibits excellent cyclic performance with 96.8% capacity retention at 1 C under 55 o C after 100 cycles, while the pure NCM 622 only delivers poor capacity retention of 71.4%. The above conclusions can be characterized that CePO4 coating layer can effectively avert the secondary reaction between electrolyte and cathode material. In addition, the CePO4 coating layer can significantly suppress the dissolution of cathodes in the electrolyte, which contributes to the excellent rate performance and cycle stability.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Coatings
·
2021
·Vol. 11
·期 8
·932
·
IF 2.881
Chen Xu,Siqi Guan,Lixiang Li,Chengguo Sun,Baigang An,Xin Geng
The content of ammonia coordination agent in initial aqueous solution is one of important factors which greatly influences the morphologies and electrochemical performances of layered LiNi6Mn2Co2O2(NCM622). The spherical morphologies, contributing to higher specific capacity of NCM622, ascribe to the same precipitation rate of transition metal ions (Ni2+, Co2+, Mn2+) during co-precipitation. Hence, the effects of different amounts of ammonia in initial solution on the hydroxide equilibrium constant and properties of NCM622 were discussed. With the ammonia content of 70 mL, the spherical morphology with more perfect layered structure and higher discharge capacity are obtained. The necessity of ammonia content in initial solution are also demonstrated from electrochemical performances of NCM622, such as the initial discharge capacity of 199.8 mAh g−1at 0.1 C, the specific capacity of 150.0 mAh g−1after 100th cycles, and the capacity retention rate of 89.6% at 3 C. If other metal ions are anticipated to be chemically doped with NCM622, the hydroxide equilibrium constant and precipitation rate need to be considered.Keywords:lithium ion batteries;hydroxide co-precipitation method;NCM ternary precursor;electrochemical performance
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2025
·
IF 20.2
Zhenzhen Liu,Zongkun Bian,Heng Zhang,Xi Wu,Zhen Fu,Haimin Zhang,Guozhong Wang,Yunxia Zhang,Huijun Zhao
The widespread popularization of electric vehicles and portable electronics gives rise to the concomitant surge of spent lithium-ion batteries (LIBs). Considering the resource shortage and environmental concerns, recycling degraded cathode materials is highly desirable to ensure the sustainable development of the whole LIBs industry. To this end, a facile LiBr-LiOH eutectic molten salt strategy is proposed for direct regeneration of highly degraded polycrystalline LiNi 0.6 Co 0.2 Mn 0.2 O 2 (denoted as D-NCM622), which enables efficient renovation of the nonstoichiometric composition and damaged crystal structure in D-NCM622, including full Li-supplement, complete restoration from rock salt/spinel phases to the original layered structure, suppressive cation disorder, and reconstructed single-crystalline nature. Benefiting from these favorable structural characteristics, the regenerated cathodes (R-NCM622) exhibit significantly enhanced electrochemical performance relative to D-NCM622, delivering an initial discharge capacity of 174.0 mAh g −1 at 0.2 C, capacity retention of 82.5 % after 200 cycles at 0.5 C, and excellent rate performance (136.7 mAh g −1 at 5 C), which is comparable to the fresh commercial NCM622 (C-NCM622). More significantly, the current regeneration route possesses the incomparable advantages in economic benefit and environmental impact compared to conventional recycling routes based on techno-economic analysis, ensuring sustainable recycling from highly degraded cathode materials.
研究领域:
材料科学
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环境科学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2020
·
IF 2.726
Lei Wu,Yan Liu,Dengke Zhang,Liwei Feng,Wenchao Qin
Layered LiNi 0.6 Co 0.2 Mn 0.2 O 2 (NCM 622) cathode materials were synthesized through spray-drying method with different pressure treatments (0, 2, 3, 4 MPa). The results of XRD and XPS showed that the LiNi 0.6 Co 0.2 Mn 0.2 O 2 with 3 MPa treated presented lower level of cation mixing. And it also led to the increase of lithium interlayer spacing and the decrease of transition metal interlayer slab. It exhibited high specific capacity of 168 mA h g -1 at 0.5 C and 130 mA h g -1 at 10 C. After 150 cycles at 10 C, the retention also maintained above 85.1%. The sample treated with 3 MPa possessed superior lithium-ion diffusion ability and lithium ion diffusion coefficient were nearly three times than that of the untreated sample. The results illustrated that pressure-treatment was a practical approach for LiNi 0.6 Co 0.2 Mn 0.2 O 2 cathodes to improve the electrochemical performance .
研究领域:
材料科学
·
电化学
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能源存储
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无机化学
·
固态化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
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2025
·
IF 2.5
Duan Yunlong,Guo Liying,Zhang Xiao,Zhao Xudong,Zhang Linnan
With the increasing energy problems and environmental pollution, lithium-ion batteries have gradually become the preferred power source for new energy vehicles due to their high energy density. With the global popularity of lithium-ion batteries, the heavy metal pollution and resource waste caused by spent batteries are becoming more and more obvious, and as a result, research on recycling treatment and resource utilization technology is critical. In this study, the leaching treatment of waste ternary cathode materials was carried out by using a H 2 SO 4 -H 2 O 2 leaching system, and the recycled metal elements were used as raw materials for subsequent synthesis. The NCM622 precursor (Ni 0.6 Co 0.2 Mn 0.2 (OH) 2 ) and Li 2 CO 3 were prepared by the co-precipitation method, and the high-performance NCM622-type (LiNi 0.6 Co 0.2 Mn 0.2 O 2 ) cathode materials were regenerated by argon-oxygen mixed gas calcination at 850°C after pre-oxidation treatment. The materials exhibited excellent electrochemical performance, with capacity retention as high as 91% after 100 cycles at 0.2C current density, thus demonstrating the ability of this process to achieve high-performance regeneration of NCM622-type cathode materials.
研究领域:
材料科学
·
能源技术
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Zelong Yang,Yingjie Zhang,Hanjing Yu,Lei Liu,Yong Li,Tao Hao,Qi Meng,Peng Dong
Spent lithium-ion batteries can be recycled to effectively re-utilize them. This can be conducive to secondary resource utilization as well as environmental protection. Here, it is suggested to roast the spent cathode materials with sodium sulfite to extract lithium more effectively. Under the ideal circumstances of a roasting temperature of 750 °C, the molar ratio of Na 2 SO 3 to spent cathode material of 3.0, and a roasting period of 2 h, the leaching efficiency of Li reaches 94.06%. During the sodium sulfite roasting process, the spent LiNi 0.6 Co 0.2 Mn 0.2 O 2 materials were transformed into LiNa(SO 4 ), LiMnO 2 , NiO, LiMn 2 O 4 , Co 9 S 8 , and Ni, Co, and Mn. The LiNi 0.6 Co 0.2 Mn 0.2 O 2 materials that were produced using the recovered Li 2 CO 3 exhibit good electrochemical performance. The closed-loop process based on Sodium sulfite roasting is expected to be applied in the recycling industry of spent lithium-ion batteries.
研究领域:
材料科学
·
环境科学
·
化学工程
·
回收技术
✓ 已验证
产品关联
DOI
高影响因子
IONICS
·
2020
·Vol. 26
·期 5
·2147-2156
·
IF 2.394
Wang Hongqiang,Yang Guangchang,Lai Feiyan,Chu Youqi,Zhang Xiaohui,Ma Zhaoling,Li Qingyu
Ni-rich oxide materials suffer poor rate capability and rapid capacity fading, which seriously hinder its further commercialization. In this study, an ultrathin Al 2 O 3 coating layer on surface of the LiNi 0.6 Co 0.2 Mn 0.2 O 2 (NCM) material was prepared with Al(OC 4 H 9 ) 4 in organic medium; the process followed by heat treatment achieves Al doping. The synergistic effect of surface modification and Al doping significantly enhances the capacity retention and rate performance, while the resistance to moisture is also improved. The coated sample with 2wt% Al 2 O 3 shows superior electrochemical performances with an initial capacity of 175 mAh g −1 at 1 C and a retention of 80% after 500 cycles, which is 10% higher than the uncoated raw materials. In addition, it delivers 152 mAh g −1 at 10 C, suggesting an excellent rate capability. The substitution of Al 3+ and the Al 2 O 3 protective layer facilitates ion diffusion dynamic characteristic and improves electrochemical stability.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Guobo Yang,Lujun Huang,Jinpeng Song,Guanghui Cong,Xin Zhang,Yating Huang,Jiajun Wang,Yingying Wang,Xiang Gao,Lin Geng
Nickel-rich layered oxides are promising cathode materials for high-energy-density lithium-ion batteries. Unfortunately, the interfacial instability and intergranular cracks result in fast capacity fading and voltage fading during battery cycling. To address these issues, a coherent spinel interphase in the grain boundary of LiNi0.6Co0.2Mn0.2O2 (NCM) was successfully constructed via solution infusion and heat treatment. The results showed that the spinel (LiMn2O4) interphase could significantly reduce the formation of intergranular cracks during cycling. Meanwhile, the spinel structure on the primary particles effectively suppressed surface degradation, realizing the reduction of interface charge-transfer resistance and electrochemical polarization. As a result, the spinel-modified NCM cathode materials display superior electrochemical cyclability. The 1 wt % spinel phase-modified NCM delivers a discharge capacity of 154.1 mAh g–1 after 300 cycles (1 C, 3–4.3 V) with an excellent capacity retention of 93%.
研究领域:
材料科学
·
电化学
·
储能
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）