Energy Technology
·
2024
·Vol. 12
·期 8
·2400433
·
IF 3.6
Xueqi Yu,Cheng Yang,Chang Liu,Yanfeng Gao,Yu Liu
Hard carbon (HC) is the most promising anode material for sodium-ion batteries (SIBs). The main obstacle to HC's application is its incompatibility with the phosphate flame-retardant additive, a common SIB additive. This incompatibility arises from the unstable solid electrolyte interphase (SEI) caused by phosphate molecule decomposition. For the first time, in this work, a new type of highly adaptive flame-retardant electrolyte is proposed. The electrolyte ensures the stability of the electrode/electrolyte interface by the introduction of pioneering long-chain nitrile as the SEI-forming additive and solvated structural regulator. Long-chain nitriles decompose before phosphate and form a stable SEI containing N element, which prevents the phosphate from inserting into the HC's layers and reduces its sodium-storage capacity. As a proof of concept, the HC anode demonstrates a higher initial Coulombic efficiency of 80.78% in the as-designed highly adaptive flame-retardant electrolyte, which is about 1.8 times than that before regulation. It can cycle stably for 1250 cycles at 3 C with a capacity retention of 60%. Moreover, the electrolyte has good flame retardancy and can extinguish naturally within 1 s. In this work, an innovative method is provided for developing high-safety SIBs based on HC anodes.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Jing Wang,Wenjie Lv,Qingjuan Ren,Lei Yan,Lijun Zhang,Zhiqiang Shi
Phenolic resin, as a synthetic polymer precursor of hard carbon, has become the core anode precursor of sodium-ion batteries (SIBs). However, the carcinogenic formaldehyde is normally adopted in the synthesis of conventional phenolic resins. Meanwhile, the synthetic process is multifarious and prolonged, which is detrimental to mass production. In this paper, an eco-friendly phenolic resin was prepared by an efficient hydrothermal synthesis process using gentle and slightly toxic glyoxylic acid instead of notorious carcinogen formaldehyde. By adjusting the carbonization temperature of as-obtained phenolic precursor, the acquired optimal hard carbon anode material equipped a splendid reversible capacity of 325 mAh g −1 and a high initial coulombic efficiency (ICE) of 88.59%. Besides, it displayed an outstanding rate performance of 161.4 mAh g −1 for 300 cycles at 5 C with the capacity retention rate of 93.31%. When matched against the appropriate cathode, the full battery can provide a high energy density of 239 Wh kg −1 , displaying excellent rate capability and cycling stability. The participation of “green” aldehyde monomer in hydrothermal synthesis process for acquiring phenolic resin is an efficient and scalable approach for obtaining higher energy storage anode, which can pave environmentally-friendly way for the realization of large-scale energy storage application.
研究领域:
材料科学
·
能源存储
·
环境科学
✓ 已验证
DOI
高影响因子
NANOTECHNOLOGY
·
2020
·Vol. 31
·期 28
·285402
·
IF 3.551
X T Zhang,Y F Yuan,M Zhu,G C Cai,Z W Tong,Z Y Yang
Low electronic conductivity and large volume variation result in inferior lithium storage performance of ZnO. To overcome these shortcomings of ZnO, herein ZnO nanoparticles are encapsulated in resorcinol–formaldehyde resin-derived hard carbon and then further assembled into a 3-dimensional mesoporous framework structure using a polyvinyl pyrrolidone-derived soft carbon network. The synthesis methods include the polymerization of resorcinol–formaldehyde resin and a polyvinyl pyrrolidone-boiling method. ZnO@dual carbon has af large specific surface area (153.7 m2 g−1) and high porosity. It exhibits excellent cycling performance and high rate capability. After 350 cycles at 500 mA g−1, the ZnO@dual carbon still delivers a discharge capacity of 701 mAh g−1 while the actual discharge capacity of ZnO reaches 950.9 mAh g−1. At 2 A g−1, ZnO@dual carbon delivers the average discharge capacity of 469.6 mAh g−1. The electrochemical performance of ZnO@dual carbon is remarkably superior to those of ZnO@single carbon, pure carbon and pure ZnO nanoparticles, demonstrating the superiority of the dual carbon-assembly structure. This composite structure greatly improves the structural stability of ZnO, enhances its electron conductivity and overall electron transport capacity; which facilitates electrolyte penetration and Li ion diffusion, leading to improved cycling stability and good rate capability.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 5
·050543
·
IF 4.386
Di Zhang,Yizhou Wang,Zhimin Fang,Yu-Shi He,Weimin Zhang,Zi-Feng Ma,Shuwen Kang
Hard carbon is one of the most promising candidate materials as the anode for sodium-ion batteries (SIBs). In this work, we developed an effective strategy to homogenize highly conductive carbon nanotubes (CNTs) into a hard carbon microsphere (e-HC) to construct electron transport channels to improve the performance of hard carbon. The material featured a wrinkled hard carbon microsphere with built-in electron transport channels. Although the optimization made no significant changes in the particle size and the graphitization state for the hard carbon, the electrochemical performance was greatly improved in comparison with the pure hard carbon material without CNTs (HC). The increase in the electric and ionic conductivity was identified. The electrochemical measurements showed that the e-HC electrode delivered a reversible capacity of 335.6 mAh g−1 at 0.05 mA g−1, which was higher than that of the HC electrode (304.1 mAh g−1 at 0.05 mA g−1). The as-synthesized e-HC material exhibited a higher rate performance and a better cycle life than the HC material. The correlated mechanism for the enhancement was proposed in this study. The e-HC material can be used as a feasible anode for SIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS LETTERS
·
2023
·
IF 3
Huaide Chen,Guojun Xu,Chenxin Jin,Jize Wu,Linwu Xiong,Xiaomin Li,Fugen Sun,Lang Zhou,Zhihao Yue
Silicon monoxide (SiO x , 0 < x < 2) has been limited in commercial applications due to its low electrical conductivity and large volume expansion effect. The existing method is to use liquid phase method for carbon coating treatment, but some problems such as uneven coating are still exist. Therefore, in this paper, C 2 H 2 is used as carbon source to coat SiO x material in a rotating chemical vapor deposition furnace to obtain hard carbon coated SiO x (SiO x @C) material. At the rate of 0.5C (1C = 2.1 A g −1 ), the discharge specific capacity of SiO x @C remained at 1116.8 mAh g −1 after 140 cycles, which is 539.8 mAh g −1 higher than SiO x .
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Hanmin Yang,Anissa Nurdiawati,Ritambhara Gond,Shiwei Chen,Shule Wang,Bin Tang,Yanghao Jin,Ilman Nuran Zaini,Ziyi Shi,Wujun Wang,Andrew Martin,Reza Younesi,Linda Sandström,Pär G. Jönsson,Weihong Yang,Tong Han
The global Sustainable Development Goals highlight the necessity for affordable and clean energy, designated as SDG7. A sustainable and feasible biorefinery concept is proposed for the carbon-negative utilization of biomass waste for affordable H 2 and battery anode material production. Specifically, an innovative tandem biocarbon + NiAlO + biocarbon catalyst strategy is constructed to realize a complete reforming of biomass pyro-vapors into H 2 +CO (as a mixture). The solid residues from pyrolysis are upgraded into high-quality hard carbon (HCs), demonstrating potential as sodium ion battery (SIBs) anodes. The product, HC-1600-6h, exhibited great electrochemical performance when employed as (SIBs) anodes (full cell: 263 Wh/kg with ICE of 89%). Ultimately, a comprehensive process is designed, simulated, and evaluated. The process yields 75 kg H 2 , 169 kg HCs, and 891 kg captured CO 2 per ton of biomass achieving approx. 100% carbon and hydrogen utilization efficiencies. A life cycle assessment estimates a biomass valorization process with negative-emissions (−0.81 kg CO 2 /kg-biomass, reliant on Sweden wind electricity). A techno-economic assessment forecasts a notably profitable process capable of co-producing affordable H 2 and hard carbon battery anodes. The payback period of the process is projected to fall within two years, assuming reference prices of 13.7 €/kg for HCs and 5 €/kg for H 2 . The process contributes to a novel business paradigm for sustainable and commercially viable biorefinery process, achieving carbon-negative valorization of biomass waste into affordable energy and materials.
研究领域:
能源工程
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2023
·
IF 13.1
Fang Yan,Yan Liu,Yuan Li,Yan Wang,Zicen Deng,Meng Li,Zhenwei Zhu,Aohan Zhou,Ting Li,Jingyi Qiu,Gaoping Cao,Shaobo Huang,Biyan Wang,Hao Zhang
To achieve high energy density in lithium batteries, the construction of lithium-ion/metal hybrid anodes is a promising strategy. In particular, because of the anisotropy of graphite, hybrid anode formed by graphite/Li metal has low transport kinetics and is easy to causes the growth of lithium dendrites and accumulation of dead Li, which seriously affects the cycle life of batteries and even causes safety problems. Here, by comparing graphite with two types of hard carbon, it was found that hybrid anode formed by hard carbon and lithium metal, possessing more disordered mesoporous structure and lithophilic groups, presents better performance. Results indicate that the mesoporous structure provides abundant active site and storage space for dead lithium. With the synergistic effect of this structure and lithophilic functional groups (–COOH), the reversibility of hard carbon/lithium metal hybrid anode is maintained, promoting uniform deposition of lithium metal and alleviating formation of lithium dendrites. The hybrid anode maintains a 99.5% Coulombic efficiency (CE) after 260 cycles at a specific capacity of 500 mAh/g. This work provides new insights into the hybrid anodes formed by carbon-based materials and lithium metal with high specific energy and fast charging ability.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
SOLID STATE SCIENCES
·
2023
·
IF 3.5
Jianglei Dan,Chenxin Jin,Lijun Wen,Guojun Xu,Xiaomin Li,Fugen Sun,Lang Zhou,Zhihao Yue
Graphite is currently the most widely used anode material for lithium-ion batteries. However, the rapid development of electric vehicle market puts forward higher requirements to the rate performance of graphite anode. Therefore, in this study, the double-layer-coated (hard carbon and alumina coated) artificial graphite particles (AG@HC@Al 2 O 3 ) are obtained to meet the requirements above. The inner hard carbon layer improves the rate performance with its large layer spacing. For the outermost ceramic layer of alumina, it further improves the high current charging capacity by improving the wettability of electrolyte to graphite anode. On the other hand, it acts as artificial solid electrolyte interphase film to slow down the loss of coulomb efficiency caused by hard carbon coating. The AG@HC@Al 2 O 3 presents an excellent capacity retention rate of 94.4% at the rate of 1C (1C = 372 mAh g −1 ) after 150 cycles.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Yifan Wang,Weisen Yang,Chunmei Zhang,Xiaoshuai Han,Jingquan Han,Shuijian He,Jiapeng Hu,Shaohua Jiang
Herein, balsa wood, poplar wood, and birch wood were selected to systematically study precursors on the structure and Li-storage properties of wood-based hard carbon thick electrodes (WHCTEs). After carbonization, the densities of balsa, poplar, and birch carbon (Bal-W, Pop-W, and Bir-W) reach 99.29, 279.13, and 608.14 mg cm⁻ 3 , respectively. The specific surface areas of Bal-W, Pop-W, and Bir-W are 798, 729, and 609 m 2 g⁻ 1 , respectively. Bal-W is rich in mesopores at 2–4 nm; Pop-W also has a certain amount of mesopores; while Bir-W has almost no mesopores but large numbers of micropores concentrated at 1.2 and 1.6 nm. In the battery test, due to the highest mass loading, Bir-W retained the largest remaining capacity among the three samples after 200 cycles at 1 mA cm⁻ 2 . The remaining capacities of Bal-W, Pop-W, and Bir-W are 12.27, 34.15, and 41.03 Ah L⁻ 1 , respectively. It is found that mass loading, specific surface area, and pore size distribution have a greater influence on the electrode capacity performance. In addition, the kinetic features of the Li-ion storage of WHCTEs were studied. This work may provide an important reference for the field of WHCTEs for alkali metal ion batteries and can promote its practical application.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Qi Liu,Weiqun Gong,Shengnan Li,Chenyang Zhao,Dandan Xu,Yujing Liu,Ziyin Yang,Xiao Bai,Anguo Ying
Carbon-based supercapacitors with outstanding electrochemical performances are strongly desired for the development of portable and wearable electronics . From the free radical engineering point of view, this study innovatively developed carbon/carbon gradient-structured microspheres (CCGMs) by the strategy of “third-order graduation polymerization” and “dynamic radical oxidation”. Compared to conventional hybrid materials , for the first time, the gradient structure is proved to be extremely beneficial for improving the capacitive performance. Benefiting its gradient-structured advantages, the CCGMs exhibited “three-ultrahigh” performance with gravimetric , volumetric , and areal capacitances of 408.23 F g −1 , 741.11 F cm −3 , and 4390 μF cm −2 , respectively. In addition, the assembled all-solids-state micro-supercapacitors delivered superior volumetric and areal specific capacitances (7.704 F cm −3 and 9.245 mF cm −2 at 5 μA cm −2 ), excellent life-span (100% after 12000 cycles), excellent volumetric and areal energy densities (1070 mWh cm −3 and 1284 μWh cm −2 ). This work paves a new way to develop unique carbon composites for high‐performance energy storage devices.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
DESALINATION
·
2022
·
IF 11.211
Xiaohui Liu,Ning Liu,Chengyao Zhao,Qi Liu,Yujing Liu,Zhongqiu Liu,Anguo Ying
Lithium extraction from seawater/brine to enrich the available global lithium resources is key to the development of energy storage and water desalination . Understanding the Li + extraction mechanism in hard carbon has been a topic of debate because of its complex structure. In this work, polyimide-based carbon microsphere (PCMs) organized by ultralong nanowires was fabricated for the first time by solvent polarity induced interface self-assembly strategy. Examined as the electrode, the assembled device delivers a high Li + extraction capacity of ~34.55 mg g −1 in LiCl solution and highly selective rapid transport in simulated Qarhan Salt Lake old brine, which is very competitive among the reported data. It is demonstrated that the Li + ion extraction behavior in PCMs is an “adsorption-intercalation/filling” hybrid mechanism, similar to that of in batteries system. The simulation calculations further reveal that specific adsorbed sites and confined channels in PCMs dominate the Li + ion-selective permeation behavior. This work provides a solvent polarity induced interface self-assembly strategy to develop polyimide-based hard carbon for electrochemical desalination and underlies the Li + ion extraction mechanism, offering a general hard carbon design concept.
研究领域:
材料科学
·
能源存储
·
环境工程
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Weifeng Jing,Mei Wang,Ying Li,Hai-Ru Li,Huinian Zhang,Shengliang Hu,Huiqi Wang,Yan-Bing He
The pore structural designability of wood-derived hard carbons (WDHCs) lays an optimal foundation for acquiring a cost-efficient and green anode material for sodium-ion batteries. Here, a WDHCs material was reported for high-capacity and cycling-stable sodium storage through a pore forming-opening strategy. Associated with the natural holey texture of wood, the WDHCs displays a hierarchical pore structure by a precise chemical treatment and a high-temperature carbonization, creating the straight channels and plentiful closed nanopores. This well-constructed channel structure is conducive to the penetration of electrolyte and the transport of sodium ions. The closed nanopores constructed by the curved graphene layers are gradually unfolded upon cycling, thus providing higher reversible capacity in the platform zone. The surface-controlled pseudocapacitive reaction favored ultrafast ion transport mainly contributes to sodium storage capacity. As a result, the developed optimal anodes harvest a high sodium storage capacity of 439 mAh g −1 at 0.1 A g −1 , and excellent long-term cycling stability of 248 mA h g −1 at 0.1 A g −1 over 500 cycles as well as the capacity retention close to 100%. The galvanostatic intermittent titration technique combined with electrochemical impedance spectroscopy proved that the WDHCs anode has fast charge transport kinetics, thus exhibiting excellent rate performance.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）