1
|
Bhattacharyya S, Roy S, Vajtai R. Emerging Processes for Sustainable Li-Ion Battery Cathode Recycling. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2400557. [PMID: 38922789 DOI: 10.1002/smll.202400557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 04/02/2024] [Indexed: 06/28/2024]
Abstract
The colossal growth in the use of Li-ion batteries (LiBs) has raised serious concerns over the supply chain of strategic minerals, e.g., Co, Ni, and Li, that make up the cathode active materials (CAM). Recycling spent LiBs is an important step toward sustainability that can establish a circular economy by effectively tackling large amounts of e-waste while ensuring an unhindered supply of critical minerals. Among the various methods of LiB recycling available, pyro- and hydrometallurgy have been utilized in the industry owing to their ease of operation and high efficiency, although they are associated with significant environmental concerns. Direct recycling, a more recent concept that aims to relithiate spent LiBs without disrupting the lattice structure of the CAMs, has been realized only in the laboratory scale so far and further optimization is required before it can be extended to the bulk scale. Additionally, significant progress has been made in the areas of hydrometallurgy in terms of using ecofriendly green lixiviants and alternate sources of energy, e.g., microwave and electrochemical, that makes the recycling processes more efficient and sustainable. In this review, the latest developments in LiB recycling are discussed that have focused on environmental and economic viability, as well as process intensification. These include deep eutectic solvent based recycling, electrochemical and microwave-assisted recycling, and various types of direct recycling.
Collapse
Affiliation(s)
- Sohini Bhattacharyya
- Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas, 77005, USA
| | - Soumyabrata Roy
- Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas, 77005, USA
- Department of Sustainable Energy Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, 208016, India
| | - Robert Vajtai
- Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas, 77005, USA
| |
Collapse
|
2
|
Niu B, E S, Song Q, Xu Z, Han B, Qin Y. Physicochemical reactions in e-waste recycling. Nat Rev Chem 2024:10.1038/s41570-024-00616-z. [PMID: 38862738 DOI: 10.1038/s41570-024-00616-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/03/2024] [Indexed: 06/13/2024]
Abstract
Electronic waste (e-waste) recycling is becoming a global concern owing to its immense quantity, hazardous character and the potential loss of valuable metals. The many processes involved in e-waste recycling stem from a mixture of physicochemical reactions, and understanding the principles of these reactions can lead to more efficient recycling methods. In this Review, we discuss the principles behind photochemistry, thermochemistry, mechanochemistry, electrochemistry and sonochemistry for metal recovery, polymer decomposition and pollutant elimination from e-waste. We also discuss how these processes induce or improve reaction rates, selectivity and controllability of e-waste recycling based on thermodynamics and kinetics, free radicals, chemical bond energy, electrical potential regulation and more. Lastly, key factors, limitations and suggestions for improvements of these physicochemical reactions for e-waste recycling are highlighted, wherein we also indicate possible research directions for the future.
Collapse
Affiliation(s)
- Bo Niu
- Key Laboratory of Farmland Ecological Environment of Hebei Province, College of Resources and Environmental Science, Hebei Agricultural University, Baoding, China.
| | - Shanshan E
- College of Mechanical and Electrical Engineering, Hebei Agricultural University, Baoding, China
| | - Qingming Song
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Zhenming Xu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Bing Han
- School of Agriculture, Food and Ecosystem Sciences, Faculty of Science, The University of Melbourne, Parkville, Victoria, Australia
- School of Engineering, Deakin University, Geelong, Victoria, Australia
| | - Yufei Qin
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
- Jiangxi Green Recycling Co., Ltd, Fengcheng, China
| |
Collapse
|
3
|
Kasri MA, Mohd Halizan MZ, Harun I, Bahrudin FI, Daud N, Aizamddin MF, Amira Shaffee SN, Rahman NA, Shafiee SA, Mahat MM. Addressing preliminary challenges in upscaling the recovery of lithium from spent lithium ion batteries by the electrochemical method: a review. RSC Adv 2024; 14:15515-15541. [PMID: 38741977 PMCID: PMC11089646 DOI: 10.1039/d4ra00972j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 04/25/2024] [Indexed: 05/16/2024] Open
Abstract
The paramount importance of lithium (Li) nowadays and the mounting volume of untreated spent LIB have imposed pressure on innovators to tackle the near-term issue of Li resource depletion through recycling. The trajectory of research dedicated to recycling has skyrocketed in this decade, reflecting the global commitment to addressing the issues surrounding Li resources. Although metallurgical methods, such as pyro- and hydrometallurgy, are presently prevalent in Li recycling, they exhibit unsustainable operational characteristics including elevated temperatures, the utilization of substantial quantities of expensive chemicals, and the generation of emissions containing toxic gases such as Cl2, SO2, and NOx. Therefore, the alternative electrochemical method has gained growing attention, as it involves a more straightforward operation leveraging ion-selective features and employing water as the main reagent, which is seen as more environmentally benign. Despite this, intensive efforts are still required to advance the electrochemical method toward commercialisation. This review highlights the key points in the electrochemical method that demand attention, including the feasibility of a large-scale setup, consideration of the substantial volume of electrolyte consumption, the design of membranes with the desired features, a suitable layout of the membrane, and the absence of techno-economic assessments for the electrochemical method. The perspectives presented herein provide a crucial understanding of the challenges of advancing the technological readiness level of the electrochemical method.
Collapse
Affiliation(s)
- Mohamad Arif Kasri
- Department of Chemistry, Kulliyyah of Science, International Islamic University Malaysia Jalan Sultan Ahmad Shah 25200 Kuantan Pahang Malaysia
- Faculty of Applied Sciences, Universiti Teknologi MARA 40450 Shah Alam Selangor Malaysia
| | | | - Irina Harun
- Department of Environment, Faculty of Forestry and Environment, Universiti Putra Malaysia Serdang 43400 Selangor Malaysia
| | - Fadzli Irwan Bahrudin
- Kulliyyah of Architecture & Environmental Design, International Islamic University Malaysia Gombak 53100 Kuala Lumpur Selangor Malaysia
| | - Nuraini Daud
- Faculty of Artificial Intelligence, Universiti Teknologi Malaysia 54100 Kuala Lumpur Malaysia
| | - Muhammad Faiz Aizamddin
- Group Research and Technology, PETRONAS Research Sdn. Bhd. Bandar Baru Bangi 43000 Selangor Malaysia
| | - Siti Nur Amira Shaffee
- Group Research and Technology, PETRONAS Research Sdn. Bhd. Bandar Baru Bangi 43000 Selangor Malaysia
| | - Norazah Abd Rahman
- School of Chemical Engineering, College of Engineering, Universiti Teknologi MARA 40450 Shah Alam Selangor Malaysia
| | - Saiful Arifin Shafiee
- Department of Chemistry, Kulliyyah of Science, International Islamic University Malaysia Jalan Sultan Ahmad Shah 25200 Kuantan Pahang Malaysia
| | - Mohd Muzamir Mahat
- Faculty of Applied Sciences, Universiti Teknologi MARA 40450 Shah Alam Selangor Malaysia
| |
Collapse
|
4
|
Lei S, Sun W, Yang Y. Comprehensive Technology for Recycling and Regenerating Materials from Spent Lithium Iron Phosphate Battery. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:3609-3628. [PMID: 38329241 DOI: 10.1021/acs.est.3c08585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
The lithium iron phosphate (LFP) battery has been widely used in electric vehicles and energy storage for its good cyclicity, high level of safety, and low cost. The massive application of LFP battery generates a large number of spent batteries. Recycling and regenerating materials from spent LFP batteries has been of great concern because it can significantly recover valuable metals and protect the environment. This paper aims to critically assess the latest technical information available on the echelon utilization and recycling of spent LFP batteries. First, it focuses on the progress of disassembly, evaluation and detection, regrouping, and application in echelon utilization. Then, the recycling technologies, including pretreatment, direct repair, and material regeneration, of spent LFPs are summarized. Finally, the paper proposes some challenges in the echelon utilization and recycling of spent LFP batteries, and concludes with recommendations for an intelligent, refined, and clean LFP battery circulation system that are required to ensure the sustainable development of spent LFP battery recycling.
Collapse
Affiliation(s)
- Shuya Lei
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Wei Sun
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
- Engineering Research Center of Ministry of Education for Carbon Emission Reduction in Metal Resource Exploitation and Utilization, Central South University, Changsha 410083, China
- Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
| | - Yue Yang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
- Engineering Research Center of Ministry of Education for Carbon Emission Reduction in Metal Resource Exploitation and Utilization, Central South University, Changsha 410083, China
- Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
| |
Collapse
|
5
|
Lei Q, Zhou K, Zhang X, Salih KAM, Peng C, He D, Chen W. Clean and efficient synthesis of LiFePO 4 cathode material using titanium white waste and calcium dihydrogen phosphate. WASTE MANAGEMENT (NEW YORK, N.Y.) 2024; 174:362-370. [PMID: 38101232 DOI: 10.1016/j.wasman.2023.12.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 11/21/2023] [Accepted: 12/10/2023] [Indexed: 12/17/2023]
Abstract
Large amounts of titanium white waste are generated in the production of titanium dioxide using sulphate method, which in turn can be used to prepare LiFePO4 cathode material, thereby reducing environmental risks and achieving resource recovery. However, a key challenge lies in the elimination of impurities. In this work, a cost-efficient and straightforward approach based on phase transformation during hydrothermal treatment was proposed to utilize titanium white waste with calcium dihydrogen phosphate for the preparation of LiFePO4 cathode material. The content of Fe in the leachate was enriched to 81.5 g/L after purification, while 99.9 % of Ti and 98.36 % of Al and were successfully removed. In the subsequent process for Fe/P mother liquor preparation, the losses of Fe and P were only 5.82 % and 2.81 %, respectively. The Fe and P contents of the synthesized FePO4 product were 29.47 % and 17.08 %, respectively, and the Fe/P molar ratio was 0.986. Crystal phase of the product matched well with standard iron phosphate, and the lamellar microstructure of FePO4 was uniform with the particle size ranging from 3 to 5 μm. Moreover, the contents of impurities in the product were far below the standard. The initial discharge of LiFePO4 synthesized by the iron phosphate was 160.6 mAh.g-1 at 0.1C and maintained good reversible capacity after 100 cycles. This work may provide new strategy for preparing LiFePO4 cathode material from industrial solid waste.
Collapse
Affiliation(s)
- Qingyuan Lei
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Kanggen Zhou
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Xuekai Zhang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Khalid A M Salih
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Changhong Peng
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Dewen He
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Wei Chen
- School of Metallurgy and Environment, Central South University, Changsha 410083, China.
| |
Collapse
|
6
|
Qin Z, Li X, Shen X, Cheng Y, Wu F, Li Y, He Z. Electrochemical selective lithium extraction and regeneration of spent lithium iron phosphate. WASTE MANAGEMENT (NEW YORK, N.Y.) 2024; 174:106-113. [PMID: 38041979 DOI: 10.1016/j.wasman.2023.11.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 11/07/2023] [Accepted: 11/23/2023] [Indexed: 12/04/2023]
Abstract
In this paper, a green, efficient and low-cost process for the selective recovery of lithium from spent LiFePO4 by anodic electrolysis is proposed. The leaching rates of Li, Fe and P under different conditions were explored and the optimal conditions are obtained. In the optimal conditions, Li, Fe and P leaching rates were 96.31%, 0.06% and 0.62% respectively. The Li/Fe selectivity was over 99.9%. The product obtained is isostructural FePO4 and retains the original particle morphology. The FePO4 obtained can be synthesised into LiFePO4/C by direct regeneration process or impurity removal regeneration process. The material synthesized by the latter process has a better electrochemical performance, with a discharge specific capacity of 144.5 mAh/g at 1.0C and a capacity retention of 92.0% over 500cycles. The superior performance can be attributed to an impurity removal process that reduced agglomeration and improved particle morphology.
Collapse
Affiliation(s)
- Zijun Qin
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China; National Engineering Research Center of Low-carbon Nonferrous Metallurgy, Central South University, Changsha 410083, China; Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Xiaohui Li
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China; National Engineering Research Center of Low-carbon Nonferrous Metallurgy, Central South University, Changsha 410083, China; Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Xinjie Shen
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China; National Engineering Research Center of Low-carbon Nonferrous Metallurgy, Central South University, Changsha 410083, China; Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Yi Cheng
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China; National Engineering Research Center of Low-carbon Nonferrous Metallurgy, Central South University, Changsha 410083, China; Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Feixiang Wu
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China; National Engineering Research Center of Low-carbon Nonferrous Metallurgy, Central South University, Changsha 410083, China; Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Yunjiao Li
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China; National Engineering Research Center of Low-carbon Nonferrous Metallurgy, Central South University, Changsha 410083, China; Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Zhenjiang He
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China; National Engineering Research Center of Low-carbon Nonferrous Metallurgy, Central South University, Changsha 410083, China; Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China.
| |
Collapse
|
7
|
Zhao T, Li W, Traversy M, Choi Y, Ghahreman A, Zhao Z, Zhang C, Zhao W, Song Y. A review on the recycling of spent lithium iron phosphate batteries. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 351:119670. [PMID: 38039588 DOI: 10.1016/j.jenvman.2023.119670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 11/12/2023] [Accepted: 11/20/2023] [Indexed: 12/03/2023]
Abstract
Lithium iron phosphate (LFP) batteries have gained widespread recognition for their exceptional thermal stability, remarkable cycling performance, non-toxic attributes, and cost-effectiveness. However, the increased adoption of LFP batteries has led to a surge in spent LFP battery disposal. Improper handling of waste LFP batteries could result in adverse consequences, including environmental degradation and the mismanagement of valuable secondary resources. This paper presents a comprehensive examination of waste LFP battery treatment methods, encompassing a holistic analysis of their recycling impact across five dimensions: resources, energy, environment, economy, and society. The recycling of waste LFP batteries is not only crucial for reducing the environmental pollution caused by hazardous components but also enables the valuable components to be efficiently recycled, promoting resource utilization. This, in turn, benefits the sustainable development of the energy industry, contributes to economic gains, stimulates social development, and enhances employment rates. Therefore, the recycling of discarded LFP batteries is both essential and inevitable. In addition, the roles and responsibilities of various stakeholders, including governments, corporations, and communities, in the realm of waste LFP battery recycling are also scrutinized, underscoring their pivotal engagement and collaboration. Notably, this paper concentrates on surveying the current research status and technological advancements within the waste LFP battery lifecycle, and juxtaposes their respective merits and drawbacks, thus furnishing a comprehensive evaluation and foresight for future progress.
Collapse
Affiliation(s)
- Tianyu Zhao
- School of Metallurgy and Environment, Central South University, Changsha, Hunan, 410083, China; The Robert M. Buchan Department of Mining, Queen's University, 25 Union Street, Kingston, Ontario, K7L3N6, Canada.
| | - Weilun Li
- School of Metallurgy and Environment, Central South University, Changsha, Hunan, 410083, China
| | - Michael Traversy
- The Robert M. Buchan Department of Mining, Queen's University, 25 Union Street, Kingston, Ontario, K7L3N6, Canada
| | - Yeonuk Choi
- The Robert M. Buchan Department of Mining, Queen's University, 25 Union Street, Kingston, Ontario, K7L3N6, Canada.
| | - Ahmad Ghahreman
- The Robert M. Buchan Department of Mining, Queen's University, 25 Union Street, Kingston, Ontario, K7L3N6, Canada
| | - Zhongwei Zhao
- School of Metallurgy and Environment, Central South University, Changsha, Hunan, 410083, China
| | - Chao Zhang
- The Robert M. Buchan Department of Mining, Queen's University, 25 Union Street, Kingston, Ontario, K7L3N6, Canada
| | - Weiduo Zhao
- School of Metallurgy and Environment, Central South University, Changsha, Hunan, 410083, China
| | - Yunfeng Song
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, Hunan, China
| |
Collapse
|
8
|
Kang Z, Huang Z, Peng Q, Shi Z, Xiao H, Yin R, Fu G, Zhao J. Recycling technologies, policies, prospects, and challenges for spent batteries. iScience 2023; 26:108072. [PMID: 37867952 PMCID: PMC10589888 DOI: 10.1016/j.isci.2023.108072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2023] Open
Abstract
The recycling of spent batteries is an important concern in resource conservation and environmental protection, while it is facing challenges such as insufficient recycling channels, high costs, and technical difficulties. To address these issues, a review of the recycling of spent batteries, emphasizing the importance and potential value of recycling is conducted. Besides, the recycling policies and strategies implemented in representative countries are summarized, providing legal and policy support for the recycling industry. Moreover, a comprehensive classification and comparison of recycling technologies identify the characteristics and current status of different approaches. The integrated recycling technology provides a better recycling performance with zero-pollution recycling of spent battery. Biorecycling technology is expected to gain a broad development prospect in the future owing to the superiority of energy-saving and environmental protection, high recycling efficiency, via microbial degradation, enzymatic degradation, etc. Consequently, as for the existing recycling challenges of waste batteries, developing new recycling technology and perfecting its recycling system is an indispensable guarantee for the sustainable development of waste battery. Meanwhile, theoretical support is offered for the recycling of spent batteries.
Collapse
Affiliation(s)
- Zhuang Kang
- School of Mechanical Engineering, Guizhou University, Guiyang 550025, China
| | - Zhixin Huang
- Key Laboratory of Advanced Manufacturing Technology of the Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Qingguo Peng
- School of Mechanical Engineering, Guizhou University, Guiyang 550025, China
- Key Laboratory of Advanced Manufacturing Technology of the Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Zhiwei Shi
- Key Laboratory of Advanced Manufacturing Technology of the Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Huaqiang Xiao
- School of Mechanical Engineering, Guizhou University, Guiyang 550025, China
| | - Ruixue Yin
- School of Mechanical Engineering, Guizhou University, Guiyang 550025, China
| | - Guang Fu
- School of Mechanical Engineering, Guizhou University, Guiyang 550025, China
| | - Jin Zhao
- School of Mechanical Engineering, Guizhou University, Guiyang 550025, China
| |
Collapse
|
9
|
Zhao T, Marthi R, Mahandra H, Chae S, Traversy M, Sadri F, Choi Y, Ghahreman A. Direct selective leaching of lithium from industrial-grade black mass of waste lithium-ion batteries containing LiFePO 4 cathodes. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 171:134-142. [PMID: 37657286 DOI: 10.1016/j.wasman.2023.08.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 06/17/2023] [Accepted: 08/23/2023] [Indexed: 09/03/2023]
Abstract
Demand for lithium-ion batteries (LIBs) is projected to maintain unprecedented acceleration for decades, towards satisfying international climate and source objectives. LIB wastes pose a threat to the environment, but also may be considered a strategic, high-grade resource. Yet, recycling the black mass of waste LIBs, which contains plastic, C, Li, Fe, Ni, Co, Mn, Cu, and Al, is very complex. Herein, the direct selective leaching of Li from the industrial-grade black mass powder of waste LIBs is proposed for the first time. Results demonstrated that the leaching efficiency of Li is shown to exceed 97%, while other metals remain below 1%. The mechanism of selective leaching was also investigated in this study. Under the experimental conditions, Fe is not leached out and remains in the form of solid FePO4. As for other impurity metal elements, they are removed from the solution due to the alkaline environment of the post-leaching solution and the adsorption effect of the anodic carbon. Furthermore, the alkaline post-leaching solution can avoid the neutralizing stage before the precipitation of lithium salts. This highly efficient and Li-selective leaching strategy offers a broadly applicable approach to reclaiming critical energy minerals from the black mass of wasted LIBs.
Collapse
Affiliation(s)
- Tianyu Zhao
- Hydrometallurgy and Environment Laboratory, The Robert M. Buchan Department of Mining, Queen's University, 25 Union Street, Kingston, Ontario K7L3N6, Canada; School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China.
| | - Rajashekhar Marthi
- Hydrometallurgy and Environment Laboratory, The Robert M. Buchan Department of Mining, Queen's University, 25 Union Street, Kingston, Ontario K7L3N6, Canada
| | - Harshit Mahandra
- Hydrometallurgy and Environment Laboratory, The Robert M. Buchan Department of Mining, Queen's University, 25 Union Street, Kingston, Ontario K7L3N6, Canada
| | - Sujin Chae
- Hydrometallurgy and Environment Laboratory, The Robert M. Buchan Department of Mining, Queen's University, 25 Union Street, Kingston, Ontario K7L3N6, Canada
| | - Michael Traversy
- Hydrometallurgy and Environment Laboratory, The Robert M. Buchan Department of Mining, Queen's University, 25 Union Street, Kingston, Ontario K7L3N6, Canada
| | - Farzaneh Sadri
- Hydrometallurgy and Environment Laboratory, The Robert M. Buchan Department of Mining, Queen's University, 25 Union Street, Kingston, Ontario K7L3N6, Canada
| | - Yeonuk Choi
- Hydrometallurgy and Environment Laboratory, The Robert M. Buchan Department of Mining, Queen's University, 25 Union Street, Kingston, Ontario K7L3N6, Canada
| | - Ahmad Ghahreman
- Hydrometallurgy and Environment Laboratory, The Robert M. Buchan Department of Mining, Queen's University, 25 Union Street, Kingston, Ontario K7L3N6, Canada.
| |
Collapse
|
10
|
Zhao J, Fan R, Xiang S, Hu J, Zheng X. Preparation and Lithium-Ion Separation Property of ZIF-8 Membrane with Excellent Flexibility. MEMBRANES 2023; 13:membranes13050500. [PMID: 37233561 DOI: 10.3390/membranes13050500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 05/01/2023] [Accepted: 05/06/2023] [Indexed: 05/27/2023]
Abstract
Metal-organic framework (MOF) membranes exhibit immense potential for separation applications due to their regular pore channels and scalable pore sizes. However, structuring a flexible and high-quality MOF membrane remains a challenge due to its brittleness, which severely restricts its practical application. This paper presents a simple and effective method in which continuous, uniform, defect-free ZIF-8 film layers of tunable thickness are constructed on the surface of inert microporous polypropylene membranes (MPPM). To provide heterogeneous nucleation sites for ZIF-8 growth, an extensive amount of hydroxyl and amine groups were introduced on the MPPM surface using the dopamine-assisted co-deposition technique. Subsequently, ZIF-8 crystals were grown in-situ on the MPPM surface using the solvothermal method. The resultant ZIF-8/MPPM exhibited a lithium-ion permeation flux of 0.151 mol m-2 h-1 and a high selectivity of Li+/Na+ = 1.93, Li+/Mg2+ = 11.50. Notably, ZIF-8/MPPM has good flexibility, and the lithium-ion permeation flux and selectivity remain unchanged at a bending curvature of 348 m-1. These excellent mechanical characteristics are crucial for the practical applications of MOF membranes.
Collapse
Affiliation(s)
- Jun Zhao
- School of Chemistry and Materials, Fujian Normal University, Fuzhou 350001, China
- Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, Key Laboratory of Green Chemical Technology of Fujian Province University, Wuyi University, Wuyishan 354300, China
| | - Rongyu Fan
- Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, Key Laboratory of Green Chemical Technology of Fujian Province University, Wuyi University, Wuyishan 354300, China
| | - Shengchang Xiang
- School of Chemistry and Materials, Fujian Normal University, Fuzhou 350001, China
| | - Jiapeng Hu
- Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, Key Laboratory of Green Chemical Technology of Fujian Province University, Wuyi University, Wuyishan 354300, China
| | - Ximing Zheng
- Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, Key Laboratory of Green Chemical Technology of Fujian Province University, Wuyi University, Wuyishan 354300, China
| |
Collapse
|
11
|
Wang Z, Wu D, Wang X, Huang Y, Wu X. Green Phosphate Route of Regeneration of LiFePO 4 Composite Materials from Spent Lithium-Ion Batteries. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c03743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Zixuan Wang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan430074, China
| | - Dandan Wu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan430074, China
| | - Xi Wang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan430074, China
| | - Ye Huang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan430074, China
| | - Xu Wu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan430074, China
| |
Collapse
|
12
|
Zhou X, Yang W, Liu X, Tang J, Su F, Li Z, Yang J, Ma Y. One-step selective separation and efficient recovery of valuable metals from mixed spent lithium batteries in the phosphoric acid system. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 155:53-64. [PMID: 36343600 DOI: 10.1016/j.wasman.2022.10.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 10/21/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
The recovery of valuable elements in spent lithium-ion batteries (LIBs) has attracted more and more attention. Efficient recovery of valuable elements from spent LIBs with lower consumption and shorter process is the target that people have been pursuing. In this study, the valuable metals (Ni, Co, Mn and Li) and FePO4 products are simultaneously recovered from mixed spent LiNixCoyMnzO2 and LiFePO4 in one step under the optimized condition of 0.88 M H3PO4, a mass ratio of LFP/NCM of 2:1, a L/S ratio of 33:1 and 80 ℃ for 120 min without additional auxiliary reagents. Over 60 % of acid consumption is reduced and the process of adjusting pH is avoidable. The leaching efficiencies of the valuable elements reach up to 99.1 % for Ni, 98.9 % for Co, 99.6 % for Li and 97.3 % for Mn. Almost all of Fe is precipitated as FePO4·2H2O. By means of the empirical model, the research on leaching kinetics demonstrates that the leaching reaction is internal diffusion-controlled with the apparent activation energy of valuable metals less than 30 kJ/mol. Furthermore, the redox reaction mechanism between spent LiBs has been explored. And the intrinsic driving force in the phosphoric acid system is found out. This finding may provide an innovative and selective recycling method for valuable elements from mixed spent LIBs with high economic benefit and fewer environmental footprints.
Collapse
Affiliation(s)
- Xiangyang Zhou
- School of Metallurgy and Environment, Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China; Hunan Provincial Key Laboratory of Nonferrous Value-added Metallurgy, Changsha 410083, China
| | - Wan Yang
- School of Metallurgy and Environment, Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Xiaojian Liu
- School of Metallurgy and Environment, Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Jingjing Tang
- School of Metallurgy and Environment, Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Fanyun Su
- School of Metallurgy and Environment, Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Zhenxiao Li
- School of Metallurgy and Environment, Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Juan Yang
- School of Metallurgy and Environment, Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China; Hunan Provincial Key Laboratory of Nonferrous Value-added Metallurgy, Changsha 410083, China
| | - Yayun Ma
- Powder Metallurgy Research Institute, Central South University, Changsha 410083, China.
| |
Collapse
|
13
|
Study on selective recovery of lithium ions from lithium iron phosphate powder by electrochemical method. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
14
|
Wu X, Ma J, Wang J, Zhang X, Zhou G, Liang Z. Progress, Key Issues, and Future Prospects for Li-Ion Battery Recycling. GLOBAL CHALLENGES (HOBOKEN, NJ) 2022; 6:2200067. [PMID: 36532240 PMCID: PMC9749081 DOI: 10.1002/gch2.202200067] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 05/30/2022] [Indexed: 06/03/2023]
Abstract
The overuse and exploitation of fossil fuels has triggered the energy crisis and caused tremendous issues for the society. Lithium-ion batteries (LIBs), as one of the most important renewable energy storage technologies, have experienced booming progress, especially with the drastic growth of electric vehicles. To avoid massive mineral mining and the opening of new mines, battery recycling to extract valuable species from spent LIBs is essential for the development of renewable energy. Therefore, LIBs recycling needs to be widely promoted/applied and the advanced recycling technology with low energy consumption, low emission, and green reagents needs to be highlighted. In this review, the necessity for battery recycling is first discussed from several different aspects. Second, the various LIBs recycling technologies that are currently used, such as pyrometallurgical and hydrometallurgical methods, are summarized and evaluated. Then, based on the challenges of the above recycling methods, the authors look further forward to some of the cutting-edge recycling technologies, such as direct repair and regeneration. In addition, the authors also discuss the prospects of selected recycling strategies for next-generation LIBs such as solid-state Li-metal batteries. Finally, overall conclusions and future perspectives for the sustainability of energy storage devices are presented in the last chapter.
Collapse
Affiliation(s)
- Xiaoxue Wu
- Frontiers Science Center for Transformative MoleculesSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai200240China
- Shenzhen Geim Graphene CenterTsinghua‐Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen518055China
| | - Jun Ma
- Shenzhen Geim Graphene CenterTsinghua‐Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen518055China
| | - Junxiong Wang
- Frontiers Science Center for Transformative MoleculesSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai200240China
- Shenzhen Geim Graphene CenterTsinghua‐Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen518055China
| | - Xuan Zhang
- Shenzhen Geim Graphene CenterTsinghua‐Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen518055China
| | - Guangmin Zhou
- Shenzhen Geim Graphene CenterTsinghua‐Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen518055China
| | - Zheng Liang
- Frontiers Science Center for Transformative MoleculesSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai200240China
| |
Collapse
|
15
|
Wang Z, Huang Y, Wang X, Wu D, Wu X. Advanced Solid-State Electrolysis for Green and Efficient Spent LiFePO 4 Cathode Material Recycling: Prototype Reactor Tests. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Zixuan Wang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan430074, China
| | - Ye Huang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan430074, China
| | - Xi Wang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan430074, China
| | - Dandan Wu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan430074, China
| | - Xu Wu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan430074, China
| |
Collapse
|
16
|
Lin S, Zhang T, Zhang B, Chao X. Research on Bayer Red Mud Slurry Electrolysis. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2022; 109:101-109. [PMID: 35552770 DOI: 10.1007/s00128-022-03495-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 02/17/2022] [Indexed: 06/15/2023]
Abstract
The Bayer red mud is the solid waste generated during the production of alumina by the Bayer process. At present, the stock of red mud in China exceeds 1.1 billion tons, covering an area of more than 120,000 mu, and the annual production volume is increasing by 100 million tons. The comprehensive utilization of red mud is still a difficult problem. Therefore, it is of great significance to actively explore new methods for removing sodium from red mud. In this study, the traditional red mud desalination process and the slurry electrolysis process are combined, and the influence of three different leaching agents on the leaching and sodium removal of red mud slurry in the presence of an electric field is explored. In the slurry electrolysis experiment, it was found that the sodium removal rate obtained by different leaching agents was CaO > CaCl2 > HCl. The red mud leached with pure dilute hydrochloric acid has the highest Na removal rate, which is 93.11%. In view of this situation, a pre-slurry-electrolysis cycle process with HCl as leaching agent was proposed. The core of slurry electrolysis is electrolyzing NaCl solution, and HCl only participates in the process as circulating medium. The design of this process reduces cost and increases efficiency.
Collapse
Affiliation(s)
- Shengnan Lin
- School of Metallurgy, Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores of Ministry of Education, Northeastern University, 110819, Liaoning Shenyang, China
| | - Tingan Zhang
- School of Metallurgy, Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores of Ministry of Education, Northeastern University, 110819, Liaoning Shenyang, China.
| | - Boran Zhang
- School of Metallurgy, Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores of Ministry of Education, Northeastern University, 110819, Liaoning Shenyang, China
| | - Xi Chao
- School of Metallurgy, Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores of Ministry of Education, Northeastern University, 110819, Liaoning Shenyang, China
| |
Collapse
|
17
|
Wu Y, Zhou K, Zhang X, Peng C, Jiang Y, Chen W. Aluminum separation by sulfuric acid leaching-solvent extraction from Al-bearing LiFePO 4/C powder for recycling of Fe/P. WASTE MANAGEMENT (NEW YORK, N.Y.) 2022; 144:303-312. [PMID: 35427902 DOI: 10.1016/j.wasman.2022.04.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 03/22/2022] [Accepted: 04/07/2022] [Indexed: 06/14/2023]
Abstract
Recovery of battery-grade FePO4 from Al-bearing spent LiFePO4 batteries (LFPs) is important for both prevention of environmental pollution and recycling of resources for LFPs industries. The premise for FePO4 recovery from spent LFPs is the separation of Al, because Al readily co-precipitates with FePO4 and lowers the electrochemical performance of the regenerated LiFePO4. In this work, an efficient approach involving sulfuric acid leaching followed by solvent extraction was developed to separate Al from spent LiFePO4/C powder. Di-(2-ethylhexyl) phosphoric acid (D2EHPA) in sulfonated kerosene was used as the extractant. The results showed that 96.4% of aluminum was extracted while the loss of iron was only 1.1% under the optimal conditions. The mass fraction of Al in the iron phosphate obtained from the extraction raffinate was only 0.007%, meeting the standard for preparing battery-grade FePO4. The extracted Al can be easily stripped by diluted H2SO4 solution and the extractants can be reused. Additionally, slope analysis method, FTIR spectroscopy, and ESI-MS analysis revealed that the extraction of Al in D2EHPA can be ascribed to the ion exchange between hydrogen ion of -PO(OH) and Al3+. This work may provide an economically feasible method for the recycling of valuable components from spent Al-bearing LiFePO4/C powder.
Collapse
Affiliation(s)
- Yehuizi Wu
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Kanggen Zhou
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Xuekai Zhang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China; School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Changhong Peng
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Yang Jiang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Wei Chen
- School of Metallurgy and Environment, Central South University, Changsha 410083, China.
| |
Collapse
|
18
|
Recovery of Lithium Iron Phosphate by Specific Ultrasonic Cavitation Parameters. SUSTAINABILITY 2022. [DOI: 10.3390/su14063390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
With the widespread use of lithium iron phosphate batteries in various industries, the amount of waste lithium iron phosphate batteries is also increasing year by year, and if not disposed of in a timely manner, will pollute the environment and waste a lot of metal resources. In the composition of lithium iron phosphate batteries, the cathode has an abundance of elements. The ultrasonic method is a crucial method to recover waste LiFePO4 batteries. It has the following disadvantages, such as the lack of empirical parameters and suitable research equipment. In order to overcome the inefficiency of the LiFePO4 recycling method, the airborne bubble dynamical mechanism of ultrasound in the removal of lithium phosphate cathode material was studied by a high-speed photographic observation and Fluent simulation and the disengagement process. Mainly aimed at the parameters such as action time, power, frequency, and action position in the detachment process were optimized. The recovery efficiency of lithium iron phosphate reached 77.7%, and the recovered lithium iron phosphate powder has good electrochemical properties, with the first charge–discharge ratio of up to 145 (mAh)/g. It is shown that the new disengagement process established in this study was adopted for the recovery of waste LiFePO4.
Collapse
|
19
|
Xie N, Li D, Li Y, Gong J, Hu X. Solar-assisted lithium metal recovery from spent lithium iron phosphate batteries. CHEMICAL ENGINEERING JOURNAL ADVANCES 2021. [DOI: 10.1016/j.ceja.2021.100163] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|
20
|
Chu W, Zhang Y, Chen L, Wu K, Huang Y, Jia Y. Comprehensive recycling of Al foil and active materials from the spent lithium-ion battery. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118704] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
21
|
Towards source reduction and green sustainability of metal-bearing waste streams: The electrochemical processes. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.137937] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
22
|
He S, Liu Z. Efficient process for recovery of waste LiMn 2O 4 cathode material precipitation thermodynamic analysis and separation experiments. WASTE MANAGEMENT (NEW YORK, N.Y.) 2020; 113:105-117. [PMID: 32526637 DOI: 10.1016/j.wasman.2020.05.042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 05/05/2020] [Accepted: 05/10/2020] [Indexed: 06/11/2023]
Abstract
An efficient process is proposed for recovery of waste LiMn2O4 cathode material, which is one of the most commonly used cathode materials in LIBs. This report constitutes the precipitation thermodynamic analysis and separation experiments based on the water-leaching solutions during the processes of low-temperature calcination with (NH4)2SO4 and water-leaching. Precipitation thermodynamic analysis is undertaken to investigate the effects of initial concentration of the target solution, [N]T1, excess precipitant, and addition of (NH4)2SO4 on the manganese precipitation in the Mn2+-Li+-SO42--NH3-NH4+-CO32--H2O system. Moreover, the effects of initial concentration of the target solution, [N]T2, and excess precipitant on the lithium precipitation in the Li+-SO42--NH3-NH4+-CO32--H2O system are investigated. All these factors clearly influence the manganese and lithium precipitation, particularly the [N]T and the presence of excess precipitant in the system. The precipitation experimental results demonstrate that the optimal conditions are: a precipitation temperature of 35 °C; an excess coefficient of the precipitant of 2.4; the use of NHC-3 to precipitate the ML-3 solution; a maximum precipitation percentage of manganese of 99.96%; and an absence of Li2CO3 precipitation. The double-sulfate salts (Li(NH4)SO4 & (NH4)2SO4) evaporated and crystallised from the Li+/NH4+ solution are mixed with the waste LiMn2O4 cathode material for calcination and water leaching, for which the efficiencies of Li and Mn are 100% and 96.89%, respectively. The double-sulfate salts are calcined at 550 °C for 45 min to obtain the Li2SO4 product. Finally, the complete recovery and separation of Mn and Li in the waste LiMn2O4 cathode material are achieved.
Collapse
Affiliation(s)
- Shichao He
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Zhihong Liu
- School of Metallurgy and Environment, Central South University, Changsha 410083, China.
| |
Collapse
|