天眼查知识产权信息显示，江苏浦士达环保科技股份有限公司取得一项名为“一种木质硬炭材料，其制备方法及其应用“，授权公告号 CN117534056B，申请日期为 2023 年 12 月。
专利摘要显示，本申请涉及电池负极材料领域，具体公开了一种木质硬炭材料，其制备方法及其应用。木质硬炭材料包括以下质量份的各组分：木质炭粉 100 份、海藻酸钠 20 - 50 份、可溶性过渡金属盐 10 - 20 份、多聚赖氨酸 10 - 20 份；其制备方法包括以下步骤：按配比，将海藻酸钠溶解于水中，再将木质炭粉浸入其中，分散均匀，得到分散液 A；按配比，将多聚赖氨酸溶解于水中，将可溶性过渡金属盐溶解于其中，分散均匀，得到分散液 B；搅拌分散液 A，再将分散液 B 加入至分散液 A 中，搅拌，过滤，洗涤，干燥，得到前置物；将前置物在惰性气氛中高温热解，降温后得到木质硬炭材料。本申请的木质硬炭材料可用于组装钠离子电池，其具有较高的首次效率和可逆容量的优点。
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