PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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2025
·Vol. 122
·期 3
·e2416817122
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IF 9.1
Zhengqiang Hu,Fengling Zhang,Feng Wu,Li Li,Renjie Chen
Lithium-ion batteries (LIBs) have become advanced energy storage technologies; however, specific capacity remains limited by the active materials in cathodes. Here, we report Li–LiNO3 batteries (LNBs) where LiNO3 in electrolyte serves as both active materials and ion conductor at room temperature. LNBs operate on a highly reversible redox between NO3− and NO2−, which results in an impressive areal capacity of 19 mAh cm−2 at a plateau voltage of 1.75 V. Furthermore, the pouch cell exhibits stable cycling at a capacity of 100 mAh. This research underscores the potential of LNBs for high-capacity energy storage.
研究领域:
材料科学
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电化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2018
·Vol. 166
·期 3
·A5075
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IF 3.662
Bizhe Su,Jiaolong Zhang,Manabu Fujita,Wenchong Zhou,Patrick H.-L. Sit,Denis Y. W. Yu
Recent experimental and theoretical studies on the family of Li-rich layered materials show that they can deliver much higher capacities than traditional Li-transitional metal oxides. This also leads to great interests in Na-rich layered oxides as alternative positive electrode materials for sodium-ion batteries for large-scale energy storage. Herein, we report a Na-rich material, Na2SeO3 with an unconventional layered structure as a positive electrode material in NIBs for the first time. This material can deliver a discharge capacity of 232 mAh g−1 after activation, one of the highest capacities from sodium-based positive electrode materials. X-ray photoelectron spectroscopy indicates the oxidation state of selenium remains unchanged during the charge process. Theoretical simulation shows that after removal of Na, spin is situated around oxygen atoms near the Na vacancy, and the projected density of state of oxygen electron is close to the Fermi level. These suggest the involvement of oxygen during charge-discharge. This work will propel new searches of high-capacity sodium-based positive electrode materials.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Jiafeng Zhai,Qingfeng Zhang,Ying Yang,Zhihao Wang,Xuan Tang,Shuhong Xie
The development of high-performance potassium-ion batteries (PIBs) necessitates the research of anodes with high capacity, long cycle life, and excellent rate performance. In this study, we drew inspiration from the structure of diatoms in nature. Through a simple self-template pyrolysis process , Se and S were doped into carbon matrix, leading to the synthesis of Se/S-doped diatomite-like carbon microflakes (Se, S-DCMs) for PIBs. The porous surface structure resembling diatoms, along with the interconnected carbon fibers within the pores, enhances contact between material and electrolyte, thereby accelerating diffusion of K + . Furthermore, the co-doping of S and Se introduces defects, creating additional reaction sites and increasing capacity. As anodes for PIBs, Se, S-DCMs exhibits high capacity (414 mAh g −1 after 100 cycles at 100 mA g −1 ) and high-rate performance (198 mAh g −1 at 2000 mA g −1 ). This study represents a promising approach for optimizing carbon structures to boosting battery performance.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
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2022
·
IF 4.654
Zishuai Zhang,Funian Mo,Wei Ling,Mangwei Cui,Jun Wei,Miao Yu,Yan Huang
Aqueous nickel-ion batteries (NiIBs) featuring small ionic radius and high theoretical volumetric capacity hold great potential in novel aqueous battery systems. However, the further development of aqueous NiIBs is plagued, owing to the strong electrostatic repulsion between Ni2+ ions and the host electrode materials, leading to the limited capacity, poor cycling performance, and inferior rate capability. Herein, the novel K2V6O16·1.64H2O (KVO) nanobelts are synthesized and utilized as cathodes for aqueous NiIBs. The KVO cathode delivers a highly reversible specific capacity of ∼140.0 mA h g–1 after the initial activation process, and ∼70.8 mA h g–1 is achieved with the Coulombic efficiency close to 100% at 0.2 A g–1 after 1000 cycles. ∼40.5 mA h g–1 is still achieved at 1.0 A g–1 after 8000 cycles. Moreover, this battery possesses a remarkable rate capability with ∼137.4 mA h g–1 being regained when the current density is switched from 1.8 to 0.2 A g–1, which is ∼97% of that at 0.2 A g–1. The capacity, lifetime, and rate capability achieved all far exceed those of the reported aqueous NiIBs, arising from the layered structure and fast kinetics of the KVO cathode. This work paves the way toward the design of aqueous NiIBs with high electrochemical performances.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2015
·Vol. 3
·期 30
·15498-15504
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IF 7.443
Xin Qi,Jin Qu,Hao-Bin Zhang,Dongzhi Yang,Yunhua Yu,Cheng Chi,Zhong-Zhen Yu
We report a facile and efficient approach to prepare graphene and FeCl3-intercalated few-layer graphene (FeCl3-FLG) with stage 1 FeCl3-graphite intercalation compounds (GICs) as a precursor by a non-oxidation process. The enlarged interlayer spacing by the intercalation of FeCl3 greatly weakens the interaction among graphite sheets and thus facilitates the exfoliation of FeCl3-GICs. By ultrasonic treatment, FeCl3-GICs are well exfoliated to graphene sheets (<2 nm) with a high yield of 100%, while the ultrasonication of pristine graphite is less efficient with a low yield (about 32%) of graphene sheets. By simply controlling the sonication time, FeCl3-FLG consisting of graphene sheets and sandwiched FeCl3 is also prepared, which exhibits a high capacity of 989 mA h g−1 after 50 cycles, fairly higher than that of the sonicated graphite (503 mA h g−1) and the theoretical value of graphite (372 mA h g−1). Furthermore, FeCl3-FLG still retains a reversible capacity as high as 539 mA h g−1 even at a current density of 1000 mA g−1. Therefore, the high reversible capacity, remarkable cycling stability and superior capability make FeCl3-FLG promising as anode materials for large-scale and high-capacity lithium ion batteries.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 9
·1422
·
IF 5.719
Zihan Guo,Dong Wang,Zhiwei Wang,Yanfang Gao,Jinrong Liu
Replacing the commercial graphite anode in Li-ion batteries with pseudocapacitor materials is an effective way to obtain high-performance energy storage devices. α-MoO3is an attractive pseudocapacitor electrode material due to its theoretical capacity of 1117 mAh g−1. Nevertheless, its low conductivity greatly limits its electrochemical performance. MXene is often used as a 2D conductive substrate and flexible framework for the development of a non-binder electrode because of its unparalleled electronic conductivity and excellent mechanical flexibility. Herein, a free-standing α-MoO3/MXene composite anode with a high specific capacity and an outstanding rate capability was prepared using a green and simple method. The resultant α-MoO3/MXene composite electrode combines the advantages of each of the two components and possesses improved Li+diffusion kinetics. In particular, this α-MoO3/MXene free-standing electrode exhibited a high Li+storage capacity (1008 mAh g−1at 0.1 A g−1) and an outstanding rate capability (172 mAh g−1at 10 A g−1), as well as a much extended cycling stability (500 cycles at 0.5 A g−1). Furthermore, a full cell was fabricated using commercial LiFePO4as the cathode, which displayed a high Li+storage capacity of 160 mAh g−1with an outstanding rate performance (48 mAh g−1at 1 A g−1). We believe that our research reveals new possibilities for the development of an advanced free-standing electrode from pseudocapacitive materials for high-performance Li-ion storage.Keywords:free-standing electrode;α-MoO3/MXene composite anode;high capacity;electrochemical energy storage
研究领域:
材料科学
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能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2024
·
IF 4
Yuxuan Ke,Shuzhen Chen,Suisui Su,Jiao Zhang,Shenghua Hu,Cuiqing Zhang,Changyuan Hu,Shizheng Zheng
Bi 2 O 3 has been recognized as a promising anode of aqueous secondary battery because of the high capacity, but the application is greatly hindered by the poor conductivity and limited actual capacity. Herein, for the first time, one dimensional (1D) α-Bi 2 O 3 nanobelt is fabricated via alkali etching strategy using rod-shaped Bi-MOF (CAU-17) as the self-sacrificial template. Specifically, high-crystalline and oxygen-deficient α-Bi 2 O 3 nanobelt with length and width of 6 μm and 300 nm are identified. The electrochemical results demonstrate the high specific capacity (247 mAh g −1 @1 A g −1 ) and acceptable stability of α-Bi 2 O 3 nanobelt. Such superior capacity is derived from the exposed electrochemical active sites, fast charge transfer and efficient ion diffusion in 1D high-crystalline and oxygen-vacancies enriched structure. The assembled Ni-Bi battery displays high capacity (78.3 mAh g −1 ) and high energy density of 100.2 Wh kg −1 (at power density of 2829.8 W kg −1 ). Our work provides rational guidance for architecting 1D high-capacitive electrodes for aqueous rechargeable alkaline battery.
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
CHINESE CHEMICAL LETTERS
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2014
·
IF 1.178
Yong Xiao,Chao Long,Ming-Tao Zheng,Han-Wu Dong,Bing-Fu Lei,Hao-Ran Zhang,Ying-Liang Liu
High-performance supercapacitor electrode materials are prepared from the commercially available activated carbon (AC) through a facile and low-cost chemical activation method. The obtained results show that AC activated by KOH with an alkali/carbon ratio of 6/1 (ACK6) possesses a specific surface area of 3405 m 2 /g, a large pore volume of 2.01 cm 3 /g, and exhibits the highest initial specific capacitance of 335 F/g at the current density of 0.5 A/g in 6 mol/L KOH, and 85% coloumbic efficiency for 5000 cycles at 20 mV/s.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
ChemSusChem
·
2023
·
IF 8.4
Yaobing Fang,Wen Zheng,Tao Hu,Hong Xiao,Li Li,Wenhui Yuan
Graphical This Graphite paper/(SnS 2 -MoS 2 )@CNTs dual-ion battery shows excellent cycling performance and fast charging capacity, which could provide a new insight for the designing of high-performance energy storage device. Dual-ion batteries have been considered as a competitive energy-storage device. However, owing to the lack of suitable high-capacity density and rapid-charging electrode materials, designing a cost-effective and high-performance dual-ion battery is still a great challenge. Herein, an ultrahigh-capacity dual-ion battery is constructed based on a carbon-nanotubes (CNTs) containing SnS 2 -MoS 2 @CNTs heterojunction anode and highly crystalline free-standing graphite paper serves as cathode. The SnS 2 -MoS 2 @CNTs heterojunction consisting of ultrathin nanosheets was prepared via a facile two-step hydrothermal method and shows flower-like morphology and high crystallinity. Benefiting from the unique design concept, the graphite paper/SnS 2 -MoS 2 @CNTs dual-ion battery delivers a high capacity of 274.2 mAh g −1 at 100 mA g −1 and has an outstanding capacity retention of 95 % after 300 cycles under 400 mA g −1 . Even at a high current density of 2 A g −1 the battery still retains a considerable capacity of 112.3 mAh g −1 . More importantly, the battery shows an extremely low self-discharge of 0.006 % h −1 after resting for 24 h. Characterization using SEM and XRD further demonstrate the excellent cycling stability and good reversibility. Consequently, this constructed dual-ion battery could be a promising energy storage device and provide new insights for the design of high-performance dual-ion batteries.
研究领域:
材料科学
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电化学
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能源存储技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
GREEN CHEMISTRY
·
2024
·Vol. 26
·期 24
·11924-11933
·
IF 9.3
Jinlong Hu,Weijun Xu,Lingzhi Zhang
Metal fluorides confined in heteroatom-doped carbon nanostructures are viewed as one of the most promising high capacity cathodes for high-performance lithium rechargeable batteries. Herein, we present a facile in situ reaction approach to synthesize nitrogen-doped porous carbon (NPC)-confined metal fluorides, which involves in situ etching toward a Schiff-base organic precursor and fluorination of metal oxides by polytetrafluoroethylene during a one-step heating process. The afforded NPC-confined FeF3 (FeF3@NPC) facilitates fast Li+/e− diffusion kinetics, accommodates severe volume fluctuation and reduces the FeF3 cathode dissolution, thus providing an outstanding high-rate capacity of 181 mA h g−1 at 5 C, accompanied by superior cycle life within 500 cycles at 2 C. This novel approach opens up new horizons to design high-performance nanoconfined metal fluoride-based materials for sustainable energy applications.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 15
·6675-6684
·
IF 9.931
Guofeng Gao,Da Tie,Hao Ma,Haijun Yu,Shanshan Shi,Bo Wang,Shengming Xu,Linlin Wang,Yufeng Zhao
In this work, we report a novel design of mixed P2 + T phase NaxCo0.1Mn0.9O2 (0.44 ≤ x ≤ 0.7) with interface rich characteristics for high performance sodium storage, whereby the tunneled T phase offers fast Na ion diffusivity and excellent structural stability, the layered P2 phase contributes to high specific capacity, and the P2 + T phase interface offers additional channels and active sites for charge transfer and excess charge storage. Consequently, the as-prepared NaxCo0.1Mn0.9O2 (0.44 ≤ x ≤ 0.7) demonstrates an excellent discharge capacity of 219 mA h g−1 at a current rate of 0.1C (1C = 176 mA g−1), and retains 117 mA h g−1 even at a high rate of 5C. This outstanding performance is significantly superior to that of pure T-type Na0.44Co0.1Mn0.9O2 and P2-type Na0.7Co0.1Mn0.9O2, and also outperforms state-of-the-art manganese-based cathodes. The kinetic analysis indicates the drastically improved Na+ diffusion coefficient of the P2 + T phase, which is 6 and 200 times that of the pure T and P phases, respectively. The good reversibility and structural stability is evidenced through an ex situ XRD study.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2019
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IF 6.361
Pengju Shi,Xueqin Chen,Zhengguang Sun,Cao Li,Ziqiang Xu,Xueliang Jiang,Bingbing Jiang
Thickness controllable porous polymer nanofilm with superior gas storage capacity has gradually emerged as promising adsorbents for capture of CO 2 , due to extremely high surface area and micro-scale pore. In this work, we have developed a novel and facile strategy to fabricate thickness controllable two or three dimensional ordered porous nanofilm based on poly(styrene-butyl acrylate), in combination with covalently layer by layer (LBL) self-assemble process and hypercrosslinked post-treatment. Abundant microporous structures and a small number of mesoporous structures are formed in hypercorsslinked nanofilm and corresponding surface area derived from Brunauer-Emmett-Teller method (BET) were determined to be 605.7 m 2 /g. The capacity of CO 2 capture was also measured, which reach up to 53.6 wt% (12.2 mmol/g) at 273 K/1 bar, which is comparable to highest record. We have found that all the as prepared nanofilm with different thickness exhibited apparently enhanced micro- and meso-porosity after hypercrosslinking. Moreover, with the increase of thickness of nanofilm, the adsorption capacity decreases gradually, as well as the CO 2 adsorption capacity. An excellent recycling capacity for CO 2 capture have also found for this porous polymer nanofilm via repetitive adsorption-desorption assay. Our work confirmed that thickness controllable porous polymer nanofilm with superior CO 2 capture capacity can be fabricated by a very simple strategy which can meet the challenges of the current CO 2 capture and storage technology.
研究领域:
材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）