Anisotropic expansion of silicon-dominated anodes
An anisotropic and anode technology, applied in the direction of negative electrodes, electrode manufacturing, battery electrodes, etc., can solve problems such as time-consuming, limited battery life, and expensive
Pending Publication Date: 2022-06-07
ENEVATE CORP
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Problems solved by technology
[0004] Conventional methods for battery anodes can be expensive, bulky and / or inefficient, for example, they can be complex and / or time-consuming to implement and can limit battery life
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Embodiment Construction
[0017] figure 1 is a diagram of a battery with an anode expansion configured according to an exemplary embodiment of the present disclosure. refer to figure 1 , shows cell 100 including separator 103 sandwiched between anode 101 and cathode 105, and current collectors 107A and 107B. Also shown is a load 109 coupled to the battery 100, illustrating the situation when the battery 100 is in a discharge mode. In this disclosure, the term "cell" may be used to refer to a single electrochemical cell, multiple electrochemical cells formed as a module, and / or multiple modules formed as an assembly.
[0018] The development of portable electronic devices and the electrification of transportation drive the need for high-performance electrochemical energy storage. Relative to other rechargeable battery chemistries, small-scale (10KWh) devices primarily use lithium-ion batteries due to the high performance of lithium-ion (Li-ion) batteries.
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Abstract
Systems and methods for anisotropic expansion of a silicon-dominated anode may include a cathode, an electrolyte, and an anode, where the anode may include a current collector and an active material on the current collector. Expansion of the anode during operation may be configured by a roughness and / or thickness of the current collector, a metal for the current collector, and / or a lamination process that adheres the active material to the current collector. For thicker current collectors, the anisotropy of the expansion of the anode may be greater. The thicker current collector may have a thickness of 10 [mu] m or more. The anisotropy of the expansion of the anode may be greater for a more rigid material for the current collector. The more rigid current collector may comprise nickel, and the less rigid current collector may comprise copper. The anisotropy of the expansion of the anode may be greater for a rougher surface current collector.
Description
[0001] Cross-Reference / Incorporation by Reference of Related Applications [0002] This application claims priority to US Patent Application No. 16 / 674,224, filed November 5, 2019, which is hereby incorporated by reference. technical field [0003] Aspects of the present disclosure relate to energy generation and storage. More specifically, certain embodiments of the present disclosure relate to methods and systems for anisotropic expansion of silicon-dominated anodes. Background technique [0004] Conventional methods for battery anodes can be expensive, bulky, and / or inefficient, eg, they can be complex and / or time-consuming to implement, and can limit battery life. [0005] Other limitations and disadvantages of conventional and conventional approaches will become apparent to those skilled in the art by comparing such a system with some aspects of the present disclosure as set forth in the remainder of this application with reference to the accompanying drawings. SUMMA...
Claims
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IPC IPC(8): H01M4/02B32B15/04H01M10/052H01M4/64
CPCH01M10/052H01M4/0404H01M4/0471H01M4/66Y02E60/10H01M4/0435H01M2004/021H01M2004/027H01M4/134H01M4/745H01M4/1395H01M10/0525H01M4/661
Inventor 朱利亚·坎顿本杰明·朴弗雷德·博恩霍姆大卫·J·李伊恩·布朗
Owner ENEVATE CORP