IONICS
·
2020
·Vol. 27
·期 1
·351-360
·
IF 2.394
Wang Jia,Rui Jiayi,Yin Jingzhou,Zhou Guolang,Zhu Lili,Wang Hao,Zhao Pusu,Zhang Lili
Two-dimensional Mg-substituted cobalt hydroxides (Co x Mg y (OH) z ) with different crystal phases were synthesized via a facile reaction of magnesium (Mg) powder and cobalt aqueous solution. The phases of Co x Mg y (OH) z (amorphous phase and β phase) were controlled by adjusting the cobalt salt precursors. The obtained hybrid amorphous Co x Mg y (OH) z (a-Co x Mg y (OH) z ) showed excellent specific capacitance (662.2 F g −1 , 1 A g −1 ) than β phase Co x Mg y (OH) z (β-Co x Mg y (OH) z ) and pure Co(OH) 2 (p-Co(OH) 2 ). Additionally, the hybrid supercapacitor assembled with a-Co x Mg y (OH) z and the activated carbon showed high specific capacitance (77.8 F g −1 , 1 A g −1 ) and ultrahigh cycling stability with 99.7% retention of the first capacitance at 10 A g −1 after 5000 cycles.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Qin Huang,Ruijun Qian,Bingshou Gong,Habibullah,Ji Zhou,Xue Yao,Yao Wang,Yigang Yan,Yungui Chen,Chaoling Wu
Mg-Ca-hydride-based materials are ideal portable H 2 source owing to excellent hydrolysis properties. However, when exposed to air, there is an explosion risk and serious hydrolysis property degradation due to the reaction with steam in air. In this work, by adding 5 wt% expanded graphite, 8 wt% AlCl 3 and 5 wt% polyethylene glycol 1000, the H 2 yield of a 30 wt% Ca-Mg alloy hydride plate after 4 h air exposure (80 RH%, 25 °C) is increased to 2.3 times that of the original sample without any attenuation. Furthermore, when 15 wt% polyethylene glycol 1000 was added, the attenuation rate after 24 h air exposure is decreased by 43 %. The characterization results show that Ca 4 Mg 3 H 14 is more easily hydrolyzed than MgH 2 . First-principles calculations demonstrate that Ca 4 Mg 3 H 14 interacts with H 2 O molecules more strongly, owing to larger adsorption energy to H 2 O. By adding appropriate amounts of expanded graphite, AlCl 3 and polyethylene glycol 1000, combined with pressing technology, the direct contact between the material and air can be delayed. Simultaneously, the hydrolysis performance of the material itself can be improved contributed to destruction of the Mg(OH) 2 passivation layer by expanded graphite and AlCl 3 , thereby jointly enhancing the long-term storage performance. This work may advance the engineering application of Mg-Ca-based hydrolysis materials.
研究领域:
材料科学
·
无机化学
·
能源化学
·
氢能源
·
功能材料
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2014
·Vol. 39
·期 7
·3313-3319
·
IF 2.93
Jing Lin,Fei Liang,Yaoming Wu,Wanqiang Liu,Limin Wang
We prepared Ti 1.4 V 0.6 Ni ribbons by arc-melting and subsequent melt-spinning techniques. Ti 1.4 V 0.6 Ni + x Mg ( x = 1, 1.5, 2, 2.5 and 3, wt.%) composite alloys were obtained by the mechanical ball-milling method. The structures and hydrogen storage properties of alloys were investigated. Ti 1.4 V 0.6 Ni + x Mg composite alloys contained icosahedral quasicrystalline phase, Ti 2 Ni-type phase, β-Ti solid-solution phase and metallic Mg. The electrochemical and gaseous hydrogen storage properties of alloys were improved with Mg addition. Ti 1.4 V 0.6 Ni + 2 Mg alloy showed maximum electrochemical discharge capacity of 282.5 mAh g −1 as well as copacetic high-rate discharge ability of 82.3% at the discharge current density of 240 mA g −1 compared with that of 30 mA g −1 , and the cycling life achieved above 200 mAh g −1 after 50 consecutive cycles of charging and discharging. The hydrogen absorption/desorption properties of Ti 1.4 V 0.6 Ni + x Mg ( x = 1, 2 and 3, wt.%) alloys were better than Ti 1.4 V 0.6 Ni. Ti 1.4 V 0.6 Ni + 3 Mg alloy also exhibited a favorable hydrogen absorption capacity of 1.53 wt.%. The improvement in the hydrogen storage characteristics caused by adding Mg may be ascribed to better hydrogen diffusion and anti-corrosion ability.
研究领域:
材料科学
·
金属功能材料
·
储能材料
·
物理化学
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Magnesium and Alloys
·
2022
·
IF 11.813
Yongyang Zhu,Mili Liu,liming Zeng,Yin Wang,Daifeng Wu,Rui Li,Qing Zhou,Renheng Tang,Fangming Xiao
The hydrolysis of MgH 2 delivers high hydrogen capacity (15.2 wt%), which is very attractive for real-time hydrogen supply. However, the formation of a surface passivation Mg(OH) 2 layer and the large excess of H 2 O required to ensure complete hydrolysis are two key challenges for the MgH 2 hydrolysis systems. Now, a low-cost method is reported to synthesize MgH 2 @Mg(BH 4 ) 2 composite via ball-milling MgH 2 with cheap and widely available B 2 O 3 (or B(OH) 3 ). By adding small amounts of B 2 O 3 , the in-situ formed Mg(BH 4 ) 2 could significantly promote the hydrolysis of MgH 2 . In particular, the MgH 2 –10 wt% B 2 O 3 composite releases 1330.7 mL·g −1 H 2 (close to 80% theoretical hydrogen generation H 2 ) in H 2 O and 1520.4 mL·g −1 H 2 (about 95%) in 0.5 M MgCl 2 in 60 min at 26 °C with hydrolysis rate of 736.9 mL·g −1 ·min −1 and 960.9 mL·g −1 ·min −1 H 2 during the first minute of the hydrolysis, respectively. In addition, the MgCl 2 solution allows repeated use by filtering and exhibits high cycle stability (20 cycles), therefore leading to much reduced capacity loss caused by the excess H 2 O. We show that by introducing B 2 O 3 and recycling the 0.5 M MgCl 2 solution, the system hydrogen capacity can approach 5.9 wt%, providing a promising hydrogen generation scheme to supply hydrogen to the fuel cells.
研究领域:
材料科学
·
能源化学
·
无机合成
·
氢能技术
·
表面工程
✓ 已验证
DOI
高影响因子
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
·
2026
·
IF 6.2
Baihe Hanqi,Guodong Xia,Wenbin Zhou,Hualin Ma
Surface modification for boiling heat transfer enhancement can boost the operational efficiency of energy systems and resolve thermal management challenges in electronic devices. However, the concurrent optimization of critical heat flux (CHF) and heat transfer coefficient (HTC) remains challenging. This is because it demands a delicate balance between facilitating bubble nucleation and suppressing detrimental bubble coalescence. To address this, concurrent improvement of the two parameters during boiling was achieved by spraying AgNWs (Ag nanowires) synthesized through a modified polyol method onto a microgroove substrate, thereby preparing Ag nanowire-coated microgroove surfaces (MG-AgNWs). The pool boiling characteristics, capillary wicking and bubble dynamics of MG-AgNWs under atmospheric pressure were systematically investigated. The as-prepared MG-AgNWs surface achieves a CHF of 349.9 W cm −2 and an HTC of 26.2 W cm −2 K −1 , corresponding to enhancements of 269.4% and 759.8% compared with the plain copper surface, respectively. Benefiting from the enhanced capillary performance of AgNWs and the excellent nucleation activity of MG, the MG-AgNWs surface exhibited significantly increased nucleation density, reduced bubble departure diameter, and accelerated bubble departure frequency compared with plain copper substrates. Capillary wickability tests on various surfaces demonstrated a strong linear correlation between wicking velocity and CHF. These results confirm that capillary-driven liquid replenishment inhibits dry spot expansion, leading to improved CHF. Collectively, such hierarchical surface presents a viable approach to creating efficient boiling heat transfer surface for advanced thermal control applications.
✓ 已验证
产品关联
DOI
高影响因子
Nature Chemistry
·
2026
·
IF 24.5
Wang Nan,Cui Chunyu,Xu Runjing,Wang Xiaofang,Wu Chaoxin,Pu Qihao,Wang Wentao,Cao Yongjie,Liao Mochou,Wang Fengmei,Wang Yonggang,Chen Yuhui,Ji Xiao,Xia Yongyao,Wang Fei
Magnesium–oxygen (Mg–O 2 ) batteries are considered promising candidates for next-generation energy storage systems due to their high specific energy, low cost and intrinsic safety. However, poor rechargeability remains a critical barrier, largely due to the lack of suitable electrolytes and undesired irreversible cathode reactions. Here we report a rechargeable non-aqueous Mg–O 2 battery enabled by a tailored electrolyte featuring a cage-like Mg 2+ solvation environment. We find that varying ether solvent chain lengths, alongside a tridentate chelating agent, can act coordinately to form a dynamic solvation microreactor. This solvation environment is consistent with the reversible formation of nanocrystalline magnesium peroxide at the cathode and remains compatible with reversible magnesium plating/stripping. The resulting Mg–O 2 batteries achieve a high initial discharge voltage approaching 2.0 V, an ultralow overpotential of 0.35 V, a remarkable round-trip energy efficiency of 80% and over 450 stable cycles. These results highlight a solvation-structure-guided strategy for enabling rechargeable Mg–O 2 batteries and potentially other multivalent metal–air systems.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Chemistry
·
2026
·
IF 7.4
Cuicui Li,Siyi Tian,Yufeng Zhang,Wanlong Wu
Rechargeable Mg batteries are considered one of the most promising next-generation energy storage devices. However, their safety is of growing importance and needs to be considered during their practical applications. Herein, we present a safer Mg battery utilizing a non-flammable and chloride-free electrolyte consisting 0.5 m Mg(TFSI) 2 in hexamethylphosphoramide (HMPA) with 2-methoxyethylamine (MOEA) as the additive. This electrolyte promotes the construction of P, N-rich solid electrolyte interphase on Mg anode, exhibit highly reversibly deposit Mg, as well as exhibits no ignition under open-flame testing. Experimental and theoretical calculations indicate that the introduction of MOEA decrease HMPA coordination numbers in the solvation structure. Consequently, the Mg||Mg symmetric cell delivers a lower overpotential and stably cycled over 700 h at a current density of 0.1 mA cm −2 and a capacity of 0.1 mAh cm −2 . Moreover, the cell coupling the Mg anode and Mo 6 S 8 cathode deliver a capacity of 48.3 mAh g −1 after 500 cycles at 100 mA g −1 with a high average coulombic efficiency close to 100%. Our work provides a novel electrolyte design for the development of high safety rechargeable Mg batteries.
✓ 已验证
DOI
高影响因子
MATERIALS AND MANUFACTURING PROCESSES
·
2025
·
IF 4.7
Binfeng Pan,Jie Liu,Zhimin Zhang,Xuchen Lu
The process for preparing high-purity anhydrous yttrium chloride was investigated using a complex salt containing an excess of yttrium oxychloride. By studying the conversion of yttrium oxychloride, it was determined that the key to preparing high-purity anhydrous yttrium chloride lay in the synergistic actions of gas-solid and solid-solid reactions. On this basis, a purity control strategy involving the adjustment of the height-diameter ratio of the sample was proposed to inhibit hydrolysis and enhance the conversion rate. By adopting the purity control strategy, high-purity anhydrous yttrium chloride with a yttrium oxychloride content below 0.1 wt.% was obtained at 600°C when the height-diameter ratio of the samples exceeded 1.42. Finally, the experiments on preparing Mg-Y alloys through molten salt electrolysis validated the impact of the YCl3 purity on the electrolysis process. When the high-purity anhydrous yttrium chloride obtained by this strategy was utilized, the current efficiency could reach 83.7%.
研究领域:
材料科学
·
冶金工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Pingxuan Zhong,Jie Li,Junjie Yang,Bokai Liao,Peng Zhang,Qiwei Wang,Wei Li
Aqueous Mg-air batteries (MABs) are promising for the high-energy-density storage but suffer from severe self-corrosion of the Mg anodes and the discharge suppression due to the formation of oxide products. Tailoring electrolyte additives is deemed as a critical means to address these limitations. Herein, salicylate derivatives with different functional groups (hydroxyl, thiol, sulfonic, methyl) were systematically investigated through half-cell discharge characterizations combined with density functional theory (DFT)/molecular dynamics (MD) simulations. The results show that the discharge performance of Mg-air is promoted by the addition of 0.1 M SA, 5-SSA, TA and 2,6-DHB, but significantly reduced impeded by 3-MSA. Both experimental and DFT/MD results indicate that the presence of hydroxyl/thiol/sulfonic groups within SA molecule provides additional sites for its complexation with Mg ions suppressing the precipitation of hydroxides on the Mg anode surface, whereas the methyl group helps the adsorption of 3-MSA on the corroding Mg surface. This work suggests that the category and position of the functional group play critical roles in determining the effect of the electrolyte additive for Mg-air battery.
研究领域:
电化学
·
材料科学
✓ 已验证
DOI
高影响因子
ENERGY & FUELS
·
2025
·
IF 5.3
Shiyu Cao,Xiquan Qi,Xiangyu Zhao
Rechargeable magnesium batteries (RMBs) emerge as a promising alternative to postlithium battery systems due to their intrinsic advantages of magnesium metal anodes. However, the lack of a stable solid electrolyte interphase (SEI) on magnesium severely limits their interfacial reversibility and cycling life. Herein, we propose a simple solution-based surface engineering strategy to construct a robust artificial SEI layer on Mg metal through displacement reactions between Mg and InI3. The resulting In/MgI2@Mg electrode features a homogeneous and compact interphase composed of electrochemically favorable In, MgI2, and InMg alloy. This artificial SEI significantly enhances Mg2+ stripping/plating reversibility, lowers interfacial resistance, and suppresses passivation. The modified Mg anode exhibits a cycling lifespan of 725 h with a low overpotential of ∼80 mV, excellent rate performance, and a reduced activation energy of 17.92 kJ mol–1. When paired with a Mo6S8 cathode, the In/MgI2@Mg-based RMB delivers a high reversible capacity of 74.4 mAh g–1 (higher than 54.7 mAh g–1 of the bare Mg-based RMB), a reduced voltage hysteresis of 0.2 V, and superior Coulombic efficiency over extended cycling. This work highlights the effectiveness of iodide-mediated interfacial chemistry for stabilizing Mg metal anodes.
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Jiaqi Zhu,Guoli Zhang,Lu Lin,Tong Qiu,Wenchao Fu,Fengzhi Liu,Baihua Qu,Dianxiao Jiang,Xiaopeng Lu,Yu Song,Xiao-Xia Liu,Xiaoyuan Zhou,Xiaoqi Sun
Rechargeable Mg batteries have gained great interest thanks to the abundant resources and high theoretical capacity of Mg metal anode. However, it suffers from severe passivation and extremely poor plating/stripping kinetics. Herein, a simple salt electrolyte system of Mg(OTf) 2 /MgCl 2 -DME is studied, and the poor Mg affinities on typical metal current collectors are revealed as the key factor for rapid cell failure. Accordingly, an interphase modification on Cu current collector by the in situ generation of a magnesiophilic Cu-thiourea (CuTU) complex is presented. It provides active sites for solvated Mg 2+ as well as Mg. This not only homogenizes Mg 2+ flux but also helps with the release of solvated species to lower the desolvation barrier. The high affinity with Mg further enables the dense and uniform growth of Mg deposits. Thanks to these merits, the facile and reversible plating/stripping of Mg is realized. As a result, the symmetric cells with Mg pre-deposited on CuTU-Cu electrodes stably operate for over 2600 h, which is a 34-fold increase in comparison to the standard Mg foil. Full cells coupling the Mg-CuTU-Cu anode and a PDI-EDA cathode with an N/P ratio of 3 deliver a high capacity of 251 mAh g −1 as well as stable cycling.
研究领域:
电化学
·
材料科学
·
能源存储
·
金属电池
·
界面工程
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2022
·
IF 20.831
Yan Han,Gaofeng Li,Zijun Hu,Feng Wang,Jun Chu,Liang Huang,Tingting Shi,Hui Zhan,Zhiping Song
Rechargeable magnesium batteries (RMBs) are regarded as one of the promising candidates of next generation of battery technologies, but seriously hampered by the sluggish kinetics of Mg 2+ -related cathode reactions. A pertinent solution is adding Li salt into the electrolyte to build a hybrid Mg/Li battery (MLB), which combines the high safety of Mg anode and the fast reaction kinetics of Li + with the cathode material . Herein, we propose a novel, simple, and cheap dual-salt electrolyte for MLBs, namely MgCl 2 –LiCl/THF, based on the exceptional synergetic effect between MgCl 2 and LiCl in THF . The 1.0 M electrolyte demonstrated desired ionic conductivity (1.3 mS cm –1 ), good compatibility with Mg anode, and adequate oxidation potential (2.2 V vs. Mg) for typical organic cathode materials including poly(anthraquinonyl sulfide) (PAQS), poly(1,4-anthraquinone) (P14AQ), and dilithium salt of poly(2,5-dihydroxy-p-benzoquinonyl sulfide) (Li 2 PDHBQS). Unlike PAQS and P14AQ adopting MgCl + as inserted cation, Li 2 PDHBQS selected Li + to participate in the reaction. Therefore it demonstrated superior electrochemical performance to most of previously reported inorganic and organic cathode materials for MLBs, including a high reversible capacity (282 mAh g −1 ), a high rate capability (72% @ 2000 mA g −1 ), and a high cycling stability (70% @ 500th cycle). The combination of MgCl 2 –LiCl/THF electrolyte and Li 2 PDHBQS cathode provides not only a successful example of high-performing and affordable MLBs, but also insights of ionic species in the electrolytes and their interactions with organic cathode materials, which are very significant for the further development of RMBs.
研究领域:
储能
·
电化学
·
材料科学
·
电池技术
·
有机电极材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）