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公开(公告)号：US10170795B2
公开(公告)日：2019-01-01
申请号：US14869647
申请日：2015-09-29
发明人： Ji-Guang Zhang , Ruiguo Cao , Wesley A. Henderson , Kuber Mishra , Wu Xu
IPC分类号： H01M10/0568 , H01M10/054 , H01M10/0569 , H01M4/38 , H01M4/66 , H01M4/58
摘要： Embodiments of a non-aqueous electrolyte for a rechargeable sodium (Na)-based battery comprise a sodium salt and a nonaqueous solvent, the electrolyte having a sodium salt concentration ≥2.5 M or a solvent-sodium salt mole ratio ≤4:1. Na-based rechargeable batteries including the electrolyte exhibit both high cycling stability and high coulombic efficiency (CE). Some embodiments of the disclosed batteries attain a CE≥80% within 10-30 charge-discharge cycles and maintain a CE≥80% for at least 100 charge-discharge cycles. In certain embodiments, the battery is an anode-free battery in the as-assembled initial state.
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2.发明申请POLYMER ELECTROLYTES FOR DENDRITE-FREE ENERGY STORAGE DEVICES HAVING HIGH COULOMBIC EFFICIENCY 审中-公开聚合物电解质无损耗能量储存设备具有高效率的效率公开(公告)号：US20150056488A1
公开(公告)日：2015-02-26
申请号：US14337041
申请日：2014-07-21
发明人： Ji-Guang Zhang , Wu Xu , Xilin Chen , Jiulin Wang , Yaohui Zhang , Jianfeng Qian
IPC分类号： H01M10/0565 , H01M10/0525
CPC分类号： H01M10/0565 , H01B1/122 , H01M10/0525 , H01M10/0566 , H01M10/0567 , H01M10/4235 , H01M2300/0082 , H01M2300/0085 , H01M2300/0088
摘要： The Coulombic efficiency of metal deposition/stripping can be improved while also preventing dendrite formation and growth by an improved electrolyte composition. The electrolyte composition also reduces the risk of flammability. The electrolyte composition includes a polymer and/or additives to form high quality SEI layers on the anode surface and to prevent further reactions between metal and electrolyte components. The electrolyte composition further includes additives to suppress dendrite growth during charge/discharge processes. The electrolyte composition can also be applied to lithium and other kinds of energy storage devices.
摘要翻译： 可以提高金属沉积/剥离的库仑效率，同时还通过改进的电解质组成防止枝晶形成和生长。 电解质组合物还降低了可燃性的风险。 电解质组合物包括在阳极表面上形成高质量SEI层并且防止金属和电解质组分之间进一步反应的聚合物和/或添加剂。 电解质组合物还包括在充电/放电过程中抑制枝晶生长的添加剂。 电解质组合物也可以应用于锂和其他种类的储能装置。
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公开(公告)号：US11664536B2
公开(公告)日：2023-05-30
申请号：US17144600
申请日：2021-01-08
发明人： Wu Xu , Ji-Guang Zhang , Hao Jia , Xianhui Zhang , Xia Cao , Sujong Chae , Ran Yi , Qiuyan Li , Won-Jin Kwak , Xiaolin Li
IPC分类号： H01M10/0568 , H01M10/0525 , H01M10/0567 , H01M4/525 , H01M4/505 , H01M10/0569
CPC分类号： H01M10/0568 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M10/0567 , H01M10/0569 , H01M2300/004 , H01M2300/0034
摘要： Electrolytes for lithium ion batteries with carbon-based, silicon-based, or carbon- and silicon-based anodes include a lithium salt; a nonaqueous solvent comprising at least one of the following components: (i) an ester, (ii) a sulfur-containing solvent, (iii) a phosphorus-containing solvent, (iv) an ether, (v) a nitrile, or any combination thereof, wherein the lithium salt is soluble in the solvent; a diluent comprising a fluoroalkyl ether, a fluorinated orthoformate, a fluorinated carbonate, a fluorinated borate, or a combination thereof, wherein the lithium salt has a solubility in the diluent at least 10 times less than a solubility of the lithium salt in the solvent; and an additive having a different composition than the lithium salt, a different composition than the solvent, and a different composition than the diluent.
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公开(公告)号：US20220340429A1
公开(公告)日：2022-10-27
申请号：US17241743
申请日：2021-04-27
发明人： Ran Yi , Ji-Guang Zhang
IPC分类号： C01B33/023 , C09K13/08 , C03C15/00
摘要： A method for etching materials in which organic solvents are added to the etching mixture and combined in a mixing arrangement. When agitated organic materials mix with the etching agent and interact with the underlying material to form a shield around the etched areas that prevents the additional interaction of water with the newly etched areas and enables the etching of silicon oxides (SiOx) but does not oxidize Si. This method leads to milder reactions with less heat generation and avoids the safety hazards associated with conventional etching methods.
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5.发明申请公开(公告)号：US20210122641A1
公开(公告)日：2021-04-29
申请号：US15929749
申请日：2020-05-20
发明人： Ji-Guang Zhang , Ran Yi , Qiuyan Li , Sujong Chae , Xiaolin Li , Yaobin Xu , Chongmin Wang
IPC分类号： C01B33/02 , H01M10/0525 , H01M4/583 , H01M10/44 , C01B32/984 , H01M10/0568 , H01M10/0569
摘要： Stabilized porous silicon particles are disclosed. The particles include a porous silicon particle comprising a plurality of interconnected silicon nanoparticles and (i) a heterogeneous layer comprising a discontinuous SiC coating that is discontinuous across a portion of pore surfaces and across a portion of an outer surface of the porous silicon particle, and a continuous carbon coating that covers outer surfaces of the discontinuous SiC coating, and remaining portions of the pore surfaces and the outer surface of the porous silicon particle, or (ii) a continuous carbon coating on surfaces of the porous silicon particle, including the outer surface and pore surfaces. Methods of making the stabilized porous silicon particles also are disclosed.
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公开(公告)号：US10854923B2
公开(公告)日：2020-12-01
申请号：US16119641
申请日：2018-08-31
发明人： Wu Xu , Shuru Chen , Ji-Guang Zhang , Xia Cao , Haiping Jia , Bin Liu , Xiaodi Ren
IPC分类号： H01M10/0569 , H01M4/38 , H01M10/0568 , H01M10/052 , H01M10/42 , H01M10/0567
摘要： Low flammability and nonflammable localized superconcentrated electrolytes (LSEs) for stable operation of lithium and sodium ion batteries are disclosed. Electrochemical devices including the low flammability and nonflammable LSEs are also disclosed. The low flammability and nonflammable LSEs include an active salt, a solvent comprising a flame retardant compound, wherein the active salt is soluble in the solvent, and a diluent in which the active salt is insoluble or poorly soluble. The LSE may further include a cosolvent, such as a carbonate, a sulfone, a sulfite, a sulfate, a carboxylate, an ether, a nitrogen-containing solvent, or any combination thereof. In certain embodiments, such as when the solvent and diluent are immiscible, the LSE further includes a bridge solvent.
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公开(公告)号：US09722277B2
公开(公告)日：2017-08-01
申请号：US14530562
申请日：2014-10-31
发明人： Jie Xiao , Dongping Lu , Yuyan Shao , Wendy D. Bennett , Gordon L. Graff , Jun Liu , Ji-Guang Zhang
IPC分类号： H01M10/056 , H01M10/0525 , H01M10/0568 , H01M10/0569 , H01M4/38 , H01M10/054 , H01M4/587
CPC分类号： H01M10/056 , H01M4/38 , H01M4/587 , H01M10/0525 , H01M10/054 , H01M10/0568 , H01M10/0569 , H01M2300/0028 , H01M2300/004
摘要： An energy storage device comprising: an anode; and a solute-containing electrolyte composition wherein the solute concentration in the electrolyte composition is sufficiently high to form a regenerative solid electrolyte interface layer on a surface of the anode only during charging of the energy storage device, wherein the regenerative layer comprises at least one solute or solvated solute from the electrolyte composition.
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8.发明申请ELECTROLYTE FOR HIGH EFFICIENCY CYCLING OF SODIUM METAL AND RECHARGEABLE SODIUM-BASED BATTERIES COMPRISING THE ELECTROLYTE 审中-公开电解质高效率循环金属和可充电的基于电解质的钠电池公开(公告)号：US20160072151A1
公开(公告)日：2016-03-10
申请号：US14869647
申请日：2015-09-29
发明人： Ji-Guang Zhang , Ruiguo Cao , Wesley A. Henderson , Kuber Mishra , Wu Xu
IPC分类号： H01M10/0568 , H01M4/58 , H01M4/38 , H01M4/66 , H01M10/054 , H01M10/0569
CPC分类号： H01M10/0568 , H01M4/381 , H01M4/5815 , H01M4/661 , H01M4/663 , H01M10/054 , H01M10/0569 , H01M2300/0025 , H01M2300/0028 , H01M2300/0037
摘要： Embodiments of a non-aqueous electrolyte for a rechargeable sodium (Na)-based battery comprise a sodium salt and a nonaqueous solvent, the electrolyte having a sodium salt concentration ≧2.5 M or a solvent-sodium salt mole ratio ≦4:1. Na-based rechargeable batteries including the electrolyte exhibit both high cycling stability and high coulombic efficiency (CE). Some embodiments of the disclosed batteries attain a CE≧80% within 10-30 charge-discharge cycles and maintain a CE≧80% for at least 100 charge-discharge cycles. In certain embodiments, the battery is an anode-free battery in the as-assembled initial state.
摘要翻译： 用于可再充电的钠（钠）电池的非水电解质的实施方案包括钠盐和非水溶剂，电解质的钠盐浓度≥2.5M或溶剂 - 钠盐摩尔比＆nlE; 4:1。 包括电解质的钠基可再充电电池具有高的循环稳定性和高的库仑效率（CE）。 所公开的电池的一些实施例在10-30次充放电循环中达到CE≥80％，并且在至少100次充放电循环中保持CE≥80％。 在某些实施例中，电池是处于组装初始状态的无阳极电池。
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公开(公告)号：US11705580B2
公开(公告)日：2023-07-18
申请号：US17537149
申请日：2021-11-29
发明人： Xia Cao , Ji-Guang Zhang , Wu Xu
IPC分类号： H01M10/0569 , H01M10/0567 , H01M10/0568 , H01M4/505 , H01M4/587 , H01M4/38 , H01M4/525
CPC分类号： H01M10/0569 , H01M4/386 , H01M4/505 , H01M4/525 , H01M4/587 , H01M10/0567 , H01M10/0568 , H01M2300/0042 , H01M2300/0051
摘要： Electrolytes for lithium ion batteries with carbon-based, silicon-based, or carbon- and silicon-based anodes include a lithium salt; a nonaqueous solvent comprising at least one of the following components: (i) an ester, (ii) a sulfur-containing solvent, (iii) a phosphorus-containing solvent, (iv) an ether, (v) a nitrile, or any combination thereof, wherein the lithium salt is soluble in the solvent; a diluent comprising a fluoroalkyl ether, a fluorinated orthoformate, a fluorinated carbonate, a fluorinated borate, a fluorinated phosphate, a fluorinated phosphite, or any combination thereof, wherein the lithium salt has a solubility in the diluent at least 10 times less than a solubility of the lithium salt in the solvent; and an additive having a different composition than the lithium salt, a different composition than the solvent, and a different composition than the diluent. In some electrolytes, the nonaqueous solvent comprises an ester.
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公开(公告)号：US20220115706A1
公开(公告)日：2022-04-14
申请号：US17537149
申请日：2021-11-29
发明人： Xia Cao , Ji-Guang Zhang , Wu Xu
IPC分类号： H01M10/0569 , H01M10/0567 , H01M10/0568 , H01M4/505 , H01M4/525 , H01M4/587 , H01M4/38
摘要： Electrolytes for lithium ion batteries with carbon-based, silicon-based, or carbon- and silicon-based anodes include a lithium salt; a nonaqueous solvent comprising at least one of the following components: (i) an ester, (ii) a sulfur-containing solvent, (iii) a phosphorus-containing solvent, (iv) an ether, (v) a nitrile, or any combination thereof, wherein the lithium salt is soluble in the solvent; a diluent comprising a fluoroalkyl ether, a fluorinated orthoformate, a fluorinated carbonate, a fluorinated borate, a fluorinated phosphate, a fluorinated phosphite, or any combination thereof, wherein the lithium salt has a solubility in the diluent at least 10 times less than a solubility of the lithium salt in the solvent; and an additive having a different composition than the lithium salt, a different composition than the solvent, and a different composition than the diluent. In some electrolytes, the nonaqueous solvent comprises an ester.
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