Imprint Energy, Inc.

Sumitomo Chemical Company, Limited

John Devin MacKenzie

Christine Chihfan Ho

Karthik Yogeeswaran

Po-Jen Cheng

Jian Chen

Jesse Smithyman

Yuko Nakazawa

Eric Jones

Jian Ping Chen

Chaojun Shi

Xuanqi Zhang

Michael Coleman

Greg Roberts

An electrical or electrochemical cell, c a cathode layer, an electrolyte layer, and an anode layer is disclosed. The cathode layer includes a first material providing a cathodic electric transport, charge storage or redox function. The electrolyte layer includes a polymer, a first electrolyte salt, and/or an ionic liquid. The anode layer includes a second material providing an anodic electric transport, charge storage or redox function. At least one of the cathode and anode layers includes the ionic liquid, a second electrolyte salt, and/or a transport-enhancing additive.

Electrolytic doping of non-electrolyte layers in printed batteries

An electrical or electrochemical cell, including a cathode layer, an electrolyte layer, and an anode layer is disclosed. The cathode layer includes a first material providing a cathodic electric transport, charge storage or redox function. The electrolyte layer includes a polymer, a first electrolyte salt, and/or an ionic liquid. The anode layer includes a second material providing an anodic electric transport, charge storage or redox function. At least one of the cathode and anode layers includes the ionic liquid, a second electrolyte salt, and/or a transport-enhancing additive.

The disclosure concerns an electrochemical cell including a cathode, an electrolyte, and an anode including an elemental metal or metal alloy. The electrolyte includes an electrolyte salt, an ionic liquid, and an optional first polymer binder. The electrolyte and/or the anode further includes a protective metal salt in an amount sufficient to (i) reduce or eliminate hydrogen evolution or open circuit side reactions in the electrochemical cell, or (ii) plate out onto or alloy with the anode metal or conductive additives in the anode. The electrochemical cell may further include a first current collector in contact with the cathode, and a second current collector in contact with the anode. The second current collector may include a metal or metal alloy. In such cells, the second current collector may further include the protective metal salt, and the protective metal salt may plate out onto or alloy with the metal or metal alloy of the second current collector.

Anode protective dopants for stabilizing electrochemical systems

Ion transport in electrochemical cells or energy storage devices may take place in metal salt-based electrolytes. The metal salt-based electrolytes may comprise high doping metal salt formulations. Electrochemical cells or energy storage devices comprising metal salt-based electrolytes may be used as single-use or rechargeable power sources.

Electrochemical cells and metal salt-based electrolytes

Novel structures and compositions for multilayer light-emitting electrochemical cell devices are described, particularly those that are adapted to work with stable and printable electrode metals, that optimize recombination efficiency, lifetime and turn-on kinetics. In particular, embodiments of the present invention provide improved performance and extended lifetime for doped electronic devices, where ionic doping levels, ionic support materials content, and electronic transport content are advantageously structured within the device. The doping profile of mobile or semi-mobile ionic dopants is intentionally made to be non-uniform to enhance doping in the interface regions of a device where the active layer interfaces with the electrode.

Multilayer light-emitting electrochemical cell device structures

Improved electrode types and device configurations for organic electronic devices are disclosed. This improvement can be achieved by facilitating gettering or desiccating action of impurities, such as water, oxygen or residual solvents from the active layers of the device. Device structure and device layer materials can contribute to this improved gettering, which is inherently useful in printed electrode devices, but may also be useful in devices with electrodes patterned by other techniques. Improvement in impurity flow out of the active area of the device leads to improved performance and operational lifetime for as-made and encapsulated devices throughout their product lifecycle. Aspects of the present invention enables improved thin film electronic devices, such as OLEDs, organic photovoltaics (OPVs) and the like.

Permeable electrodes for high performance organic electronic devices

An electrical or electrochemical cell, including a cathode layer, an electrolyte layer, and an anode layer is disclosed. The cathode layer includes a first material providing a cathodic electric transport, charge storage or redox function. The electrolyte layer includes a polymer, a first electrolyte salt, and/or an ionic liquid, The anode layer includes a second material providing an anodic electric transport, charge storage or redox function. At least one of the cathode and anode layers includes the ionic liquid, a second electrolyte salt, and/or a transport-enhancing additive.

Electronic devices, such as photovoltaic, transistor or doped light-emitting devices, can be manufactured with an air-based manufacturing process and device structure that encapsulates the device with air-stable electrodes and active layers that are reasonably stable in their unexcited state. A sheet of flexible material may act as a substrate and a second sheet of material acts as a cover. Getter materials are included in the encapsulated device, with the getter latent or unreactive during the manufacturing process.

Encapsulation process and structure for electronic devices

A conductive electrode paste or ink formulation including a getter removes or reduces the concentration of the unwanted impurities in an electronic device. These reductions may happen during or immediately after the fabrication or sealing of the device, or they may occur after some activation time or event. Water, oxygen, carbon dioxide, hydrogen, and residual solvents are gettered.

Formulations for improved electrodes for electronic devices

Organic additives are used to improve the lifetimes of organic electronic devices, such as electroluminescent devices fabricated from polymer luminescent ink. These additives include moisture getters, thermally-activated organic/inorganic hybrids, radical scavengers, antioxidants, UV stabilizers, and photoretarders. For water and oxygen scavengers, activation at elevated temperatures or through another activation method is preferred. This allows for the handling of the device materials containing the scavenger under a lower temperature condition in air where higher levels of ambiently-supplied water or oxygen may also be present. The invention also improves operational lifetimes as getters, scavengers and similar acting additives serve to reduce detrimental reactive species that transport into the device, are generated during operation, or become reactive during operation due to the presence of excited states or external stimulation by electrical, optical or other means.

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Lafayette, CA, United States of America

John Devin MacKenzie