CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Shi Chen,Libin Wang,Xianluo Hu
Electrode materials are the key to electrochemical energy storage devices like supercapacitors. However, current materials can hardly meet the charge-storage capacity and/or operability requirements of practical scenarios in harsh low-temperature conditions. Here we report the advancement in photothermal-assisted supercapacitors operable at −40 °C using an electrochemically active and photothermal electrode material of commercially available TiN nanocrystals. Bifunctional TiN shows broad light absorption (>98%) in the whole solar spectrum and high photothermal conversion efficiency (62.5%). Even in an open atmospheric environment, the photochemical effect boosts the device with a considerable temperature rise from −36.6 °C to −10.8 °C under 1 solar illumination. Meanwhile, the as-fabricated device exhibits highly stable and reversible charge-storage capability. Its capacitance is enhanced by 38.0% at 5 mV s −1 at −40 °C, achieving 70.9% of the capacitance at 25 °C. The energy density is improved by 81.1% at 140 mW cm −2 at −40 °C, reaching 59.3% of the capacitance at 25 °C. The route for preparing TiN inks and fabricating screen-printed devices is simple and cheap, which is suitable for industrial mass production. The self-heating integration approach provides a promising strategy for designing new functionalized energy-storage devices with low temperature resistant features.
研究领域:
材料科学
·
能源存储
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
·
2024
·Vol. 121
·期 17
·e2311075121
·
IF 9.4
Lanfang Que,Fuda Yu,Jihuai Wu,Zhang Lan,Yutong Feng,Ruizheng Zhao,Zhihao Sun,Zhuo Yang,Hao Luo,Dongliang Chao
Voltage oscillation at subzero in sodium-ion batteries (SIBs) has been a common but overlooked scenario, almost yet to be understood. For example, the phenomenon seriously deteriorates the performance of Na3V2(PO4)3 (NVP) cathode in PC (propylene carbonate)/EC (ethylene carbonate)-based electrolyte at −20 °C. Here, the correlation between voltage oscillation, structural evolution, and electrolytes has been revealed based on theoretical calculations, in-/ex-situ techniques, and cross-experiments. It is found that the local phase transition of the Na3V2(PO4)3 (NVP) cathode in PC/EC-based electrolyte at −20 °C should be responsible for the oscillatory phenomenon. Furthermore, the low exchange current density originating from the high desolvation energy barrier in NVP-PC/EC system also aggravates the local phase transformation, resulting in severe voltage oscillation. By introducing the diglyme solvent with lower Na-solvent binding energy, the voltage oscillation of the NVP can be eliminated effectively at subzero. As a result, the high capacity retentions of 98.3% at −20 °C and 75.3% at −40 °C are achieved. The finding provides insight into the abnormal SIBs degradation and brings the voltage oscillation behavior of rechargeable batteries into the limelight.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
Joule
·
2024
·
IF 38.6
Qiaonan Zhu,Dandan Yu,Jiangchun Chen,Liwei Cheng,Mengyao Tang,Yingyu Wang,Yuting Li,Jie Yang,Hua Wang
High-energy cryogenic batteries have been pursued throughout the past decades. Anode-free batteries offer a promising avenue to boost energy density because they comprise weightless anodes. However, their low-temperature operation is challenged by poor metal plating/stripping reversibility and unstable solid electrolyte interphase (SEI). Herein, the first low-temperature anode-free sodium battery is fabricated by simultaneous surface modification of the current collector and electrolyte design. The plasma-treated current collector (p-Al@C) possesses a sodiophilic N-doped carbon surface, enabling uniform sodium nucleation and growth; meanwhile, the optimized weak-solvation electrolyte facilitates Na + desolvation and the formation of a B/F inorganic-contained SEI. Na||p-Al@C half cells exhibit an ultrahigh average Coulombic efficiency of 99.88%, and p-Al@C||Na 3 V 2 (PO 4 ) 3 batteries achieve an energy density of 250 Wh kg −1 cathode + anode at −40°C. More interestingly, Ah-level anode-free pouch cells deliver a remarkable energy density of 110 Wh kg −1 entire cell at −40°C. This work represents a critical step for low-temperature sodium batteries.
研究领域:
储能
·
电化学
·
电池技术
·
材料科学
·
低温电池
✓ 已验证
DOI
高影响因子
Energy Storage Materials
·
2024
·
IF 18.9
Shengkai Mo,Hanwen An,Qingsong Liu,Jiaming Zhu,Chuankai Fu,Yajie Song,Jiajun Wang
The practical application of solid-state batteries (SSBs) has been significantly hampered by the sluggish Li + transport dynamics in cold climates. In particular, SSBs suffer from insufficient dynamics due to poor electrolyte-electrode interface compatibility at low temperatures. Herein, a multistage bridge engineering for electrolyte and interface is proposed to improve the Li + transfer kinetics, which enables quasi-solid batteries to operate at low temperatures. The incorporation of siloxane segments allows the electrolyte to polymerise uniformly and improves Li + transport. The multistage bridging structure improves the electrode-electrolyte interfacial interaction, accelerating Li + transfer kinetics at low temperatures. The obtained Li||LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) cell delivers a high coulombic efficiency of 99.98 % and a specific energy of 266 Wh⋅kg −1 at -40 °C. This multistage bridge engineering strategy provides a new perspective for polymer electrolyte design towards stable operation of quasi-solid batteries at low temperatures.
研究领域:
材料科学
·
电化学
·
储能
·
电池技术
✓ 已验证
DOI
高影响因子
Materials Today Chemistry
·
2023
·
IF 7.3
Baotian Qiu,Xiudi Xiao,Gang Xu,Guoping Dong
Self-powered electrochromic devices (defined as SECDs) driven by metal electrodes have attracted wide attention due to their low voltage, low energy consumption characteristics, and getting rid of the limitation of external power supplies. However, the applicability in extreme temperature environments is severely hampered by the inadequate choice of electrochromic electrolytes. Herein, we adopt the ethylene glycol-assisted salty PVA-type hydrogel electrolyte with a minimum freezing point as low as −50 °C. Based on the hybrid Zn 2+ and Al 3+ , the ion conductivity of hydrogel electrolyte at room temperature is 1.56 mS cm −1 , and the fracture strain can exceed 300%. The hydrogel electrolyte can maintain average transmittance of 95% within a wide temperature range of −40 °C–60 °C. After freezing at −30 °C, the breaking elongation can reach 352%, and the tensile strength is up to 4.45 MPa. Based on the W 18 O 49 films and the hydrogel electrolyte, the modulation of the SECDs can reach 63%, and the cycle life is more than 1000 times. After building the flexible device, the modulation of the flexible SECDs based on the PEN/ITO substrate is 51% at 25 °C and 43% at −40 °C. What's more, the flexible SECDs can be tailored and worked normally without packaging, which can promote the development of the cryogenic and tailorable application of the flexible SECDs.
研究领域:
材料科学
·
能源技术
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Bingying Zhu,Xiaotang Shi,Tianle Zheng,Jianwei Xiong,Ya-Jun Cheng,Yonggao Xia
Lithium secondary battery with a wide working temperature range is crucial to boost its increasing applications in harsh circumstances. Suppressing excessive electrolyte decomposition at high temperatures while maintaining reasonable electrochemical kinetics at low temperatures is critical for wide-temperature electrochemical performance. Construction of high temperature stable electrode-electrolyte interface layer by electrolyte formulation is an effective strategy to prevent electrolyte from uncontrollable decomposition. On the contrary to conventional thinking, propylene carbonate (PC) bearing poor filming ability to suppress electrolyte decomposition is used in this work to promote decomposition of the single lithium difluoro(oxalate)borate (LiODFB) salt in the electrolyte, producing inorganic-rich interface layer with good structure stability over a wide temperature range. Glutaronitrile (GLN) is further utilized to minimize the decomposition of PC by expelling PC out of the solvation sheath of lithium-ion. The teamwork of LiODFB, PC, and GLN makes a synergistic contribution to building a high-temperature stable electrode-electrolyte interface layer at both LFP and MCMB electrodes. Based on the approach developed in this work, the temperature window is successfully expanded to the range of from -40 °C to 140 °C. Excellent electrochemical performance is exhibited by both LFP/Li and MCMB/Li cells from -20 °C to 100 °C in terms of reversible capacity and cyclic stability.
研究领域:
电化学
·
材料科学
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2026
·
IF 18.1
Li Chuan,Ma Xintao,Li Dedi,Zhang Rong,Cui Huilin,Zhang Shaoce,Huang Zhaodong,Nian Qingshun,Yang Hui,Zhi Chunyi
Graphite positive electrode-based anion-intercalation aqueous dual-ion batteries using bis(trifluoromethanesulfonyl)imide anion intercalations show the potential because of the high discharge plateau (>1.4 V vs. the standard hydrogen electrode at 25 °C ± 2 °C) for anion chemistry. However, currently, the electrochemical performance of aqueous dual-ion batteries based on bis(trifluoromethanesulfonyl)imide anion intercalation can only be achieved in highly concentrated salt electrolytes. This dependence on high anion concentration to activate intercalation inevitably leads to high costs and prevents operation at low temperatures (e.g., < −20 °C). In this context, we explore a hydrogel electrolyte rich in dipole molecules, incorporating only 1 M lithium bis(trifluoromethanesulfonyl)imine and 2 M zinc chloride, with expanded electrochemical stability windows (>4.6 V at −40 °C) to activate bis(trifluoromethanesulfonyl)imide anion insertion into the graphite positive electrode through high-voltage scanning to 3.0 V. The assembled aqueous dual-ion batteries based on bis(trifluoromethanesulfonyl)imide anion intercalation demonstrate high discharge plateaus of 1.9 V at −20 °C and 1.7 V at −40 °C, along with a specific energy of 595 Wh kg −1 (normalized to the 1 mg cm −2 of the graphite positive electrode).
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Wenjun Wang,Kai Wang,Pengcheng Li,Miao Wang
Integration and miniaturization of electronic devices means efficient thermal management is urgently required. In this paper, thermally conductive but electrically insulated boron nitride (BN) is strung by polyacrylonitrile (PAN) fibers to form a flexible and porous BN@PAN film. Subsequently, solution impregnation combining cold pressing is used to fabricate sandwich-like structure SAT/BN@PAN (SBP) that alternately layered by hydrate salt sodium acetate trihydrate (SAT) and BN@PAN film. The flexible and electrically insulated SBP film possesses high leakage-proof temperature and latent heat. Meanwhile, the sandwich-like structure increases in-plane thermal conductivity by 20 times thus largely promotes anisotropic heat transfer. Consequently, the SBP film heats electronics by 10 °C at −40 °C via heat release from solidification maintaining its steady working cycles. More importantly, the SBP film can suppress overheating by 50 °C at 150 °C via melting and thermal chemical reaction indicating potential in thermal runaway prevention. The wide-range (-40 ∼ 150 °C) thermal management capability and simple fabrication technique of the sandwich-like SBP film provide application potential in advanced electronics devices.
研究领域:
材料科学
·
热能工程
·
电子工程
✓ 已验证
DOI
高影响因子
Results in Engineering
·
2025
·
IF 7.9
Houhuang Tao,Xue Yu,Lanqing Li,Maria De Los Angeles,Na Wang
Hydrogel sensors are becoming increasingly important for electronic devices because of their flexibility, versatility, and high sensitivity, especially in applications that necessitate compatibility with human skin. However, creating hydrogel sensors that maintain high toughness and antifreeze properties in extreme cold conditions continues to be a challenge. This study introduces phytic acid (PA) into a hyperbranched polyamide (HBP)/cellulose nanofiber (CNF) interacting network to develop a freezing-resistant, high-toughness hydrogel with sustained electrical conductivity (HBP/CNF-PA). The terminal amino groups of the HBP enhance hydrogen bonding, thereby improving the mechanical strength and conductivity of the hydrogel. The resulting HBP/CNF-PA hydrogels exhibit a tensile strength of 219.7 kPa, a compressive strength of 0.87 MPa, and dissipate energy at a rate of 795 kJ·m -3 , along with a conductivity of 0.45 S·cm -1 and exceptional frost resistance, extending down to -40°°C, due to the ionization induced by PA. Hydrogels were utilized to create flexible sensors with a sensitivity of up to 1.34 V·g -1 . The sensors detect signals with a time interval of just 197ms and 215ms, capable of identifying changes in relative resistance caused by wrist flexion, gestures, and voice movements.
研究领域:
材料科学
·
纳米技术
·
传感器
·
高分子科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 31
·期 18
·2009438
·
IF 18.808
Jianbo Yang,Zhen Xu,Jijun Wang,Ligang Gai,Xingxiang Ji,Haihui Jiang,Libin Liu
Hydrogel electrolytes have high room-temperature conductivity and can be widely used in energy storage device. However, hydrogels suffer from the inevitable freezing of water at subzero temperatures, resulting in the diminishment of their conductivity and mechanical properties. How to achieve high conductivity without sacrificing hydrogels’ flexibility at subzero temperature is an important challenge. To address this challenge, a new type of zwitterionic polymer hydrogel (polySH) electrolytes is fabricated. The anionic and cationic counterions on the polymer chains facilitate the dissociation of LiCl. The antifreezing electrolyte can be stretched to a strain of 325% and compressed to 75% at −40 °C and possesses an outstanding conductivity of 12.6 mS cm −1 at −40 °C. A direct hopping migration mechanism of hydrated lithium-ion through the channel of zwitterion groups is proposed. The polySH electrolyte-based-supercapacitor (SC) exhibits a high specific capacitance of 178 mF cm −2 at 60 °C and 134 mF cm −2 at −30 °C with a retention of 81% and 71% of the initial capacitance after 10 000 cycles, respectively. The overall merits of the electrolyte will open up a new avenue for advanced ionic conductors and energy storage device in practical applications.
研究领域:
材料科学
·
能量存储
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF POROUS MATERIALS
·
2021
·Vol. 28
·期 6
·1737-1747
·
IF 2.496
Jiang Haoxi,Zhao Yingying,Lin Jing,Chen Yifei,Wang Sheng
Highly dispersed palladium nanoparticles (NPs) supported on UiO-66 as catalyst for CO 2 methanation were prepared by supercritical fluid deposition (SFD). As a result, the most suitable Pd precursor salt and co-solvent are Na 2 PdCl 4 and ethanol/DMF, respectively. The best SFD process condition to deposit the Pd precursor on UiO-66 is 40 °C, 10 MPa and 2 h. Under the above condition, 4% Pd/UiO-66 exhibits the highest activity with 53% of CO 2 conversion and 95% of CH 4 selectivity while the turnover frequency (TOF) value is 3669.4 h −1 . The catalysts were characterized by XRD, BET, TEM, XPS, TGA, CO-DRIFTS and ICP-OES to investigate the structure–activity relationship. The 4% Pd/UiO-66 with the average size of 2.2 nm of Pd prepared in assistance of supercritical fluid behaved the similar activity as the 6%Pd/UiO-66 with average size of 9.7 nm of Pd prepared by sol–gel method. It is showed prospect of technique for reducing noble metal loading resulting from high dispersion effect.
研究领域:
催化
·
材料科学
·
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）