| 查看: 3608 | 回复: 15 | |||||||||
hexm至尊木虫 (著名写手)
|
[交流]
Harford大学最新Nature文章：有机液流电池 已有9人参与
|
|
As the fraction of electricity generation from intermittent renewable sources—such as solar or wind—grows, the ability to store large amounts of electrical energy is of increasing importance. Solid-electrode batteries maintain discharge at peak power for far too short a time to fully regulate wind or solar power output1, 2. In contrast, flow batteries can independently scale the power (electrode area) and energy (arbitrarily large storage volume) components of the system by maintaining all of the electro-active species in fluid form3, 4, 5. Wide-scale utilization of flow batteries is, however, limited by the abundance and cost of these materials, particularly those using redox-active metals and precious-metal electrocatalysts6, 7. Here we describe a class of energy storage materials that exploits the favourable chemical and electrochemical properties of a family of molecules known as quinones. The example we demonstrate is a metal-free flow battery based on the redox chemistry of 9,10-anthraquinone-2,7-disulphonic acid (AQDS). AQDS undergoes extremely rapid and reversible two-electron two-proton reduction on a glassy carbon electrode in sulphuric acid. An aqueous flow battery with inexpensive carbon electrodes, combining the quinone/hydroquinone couple with the Br2/Br− redox couple, yields a peak galvanic power density exceeding 0.6 W cm−2 at 1.3 A cm−2. Cycling of this quinone–bromide flow battery showed >99 per cent storage capacity retention per cycle. The organic anthraquinone species can be synthesized from inexpensive commodity chemicals8. This organic approach permits tuning of important properties such as the reduction potential and solubility by adding functional groups: for example, we demonstrate that the addition of two hydroxy groups to AQDS increases the open circuit potential of the cell by 11% and we describe a pathway for further increases in cell voltage. The use of π-aromatic redox-active organic molecules instead of redox-active metals represents a new and promising direction for realizing massive electrical energy storage at greatly reduced cost. 哈佛大学最新发表在Nature的文章，介绍了一种高效低成本、适用于大规模储能的有机无机电化学液流电池。 |
回复此楼» 本帖附件资源列表
-
欢迎监督和反馈：小木虫仅提供交流平台，不对该内容负责。
本内容由用户自主发布，如果其内容涉及到知识产权问题，其责任在于用户本人，如对版权有异议，请联系邮箱：xiaomuchong@tal.com - 附件 1 : A_metal-free_organic–inorganic_aqueous_flow_battery.pdf
- 附件 2 : A_metal-free_organic–inorganic_aqueous_flow_battery.ppt
2014-01-11 17:44:21, 1.07 M
2014-01-11 17:44:25, 1.05 M
» 收录本帖的淘帖专辑推荐
 F/超级电容器/AW | 优良资源 | 电化学、材料模拟、金属材料及各大材料 | 电池杂记 |
| 好书！ | 新能源 |
» 本帖已获得的红花（最新10朵）
xiaobo1255» 猜你喜欢
醋酸盐体系溶胶凝胶法合成富锂锰基正极
已经有1人回复
-
牛磺酸钠
已经有1人回复
-
物理化学论文润色/翻译怎么收费?
已经有226人回复
-
Renlab@monash全奖博士机会，最后三天！
已经有0人回复
-
今年面上没有消息，想来是没了，散个金攒攒人品，为明年祈福
已经有582人回复
-
合肥工业大学854仪器技术综合专业课考研
已经有0人回复
-
27年电化学博士毕业，想找海外QS前50的高校读博后求推荐
已经有3人回复
-
27年电池/材料类博士申请
已经有1人回复
-
2027年博士申请或转博科研助理 求推荐
已经有1人回复
-
请问谁有2025最新影响因子Excel表？金币求助！
已经有14人回复
» 本主题相关价值贴推荐，对您同样有帮助:
fanxuliang90
木虫 (著名写手)
- 应助: 55 (初中生)
- 金币: 3180.4
- 散金: 9323
- 红花: 22
- 帖子: 2263
- 在线: 778.3小时
- 虫号: 1247955
- 注册: 2011-03-28
- 性别: GG
- 专业: 电化学
2楼2014-01-11 18:01:12
0.8
 |
3楼2014-01-11 18:15:46
0.8
| 顶一下，感谢分享！ |
4楼2014-01-11 20:28:05
wolfnumber
银虫 (著名写手)
- 应助: 11 (小学生)
- 金币: 2469.2
- 散金: 2805
- 红花: 17
- 帖子: 1406
- 在线: 487.9小时
- 虫号: 900397
- 注册: 2009-11-11
- 性别: GG
- 专业: 半导体材料
5楼2014-01-11 22:20:48
0.8
| 顶一下，感谢分享！ |
6楼2014-01-12 10:47:22
7楼2014-01-12 11:35:40
qingwenzhang
铁杆木虫 (著名写手)
- 应助: 1 (幼儿园)
- 金币: 9495
- 散金: 9
- 红花: 4
- 沙发: 15
- 帖子: 1991
- 在线: 124.7小时
- 虫号: 1234480
- 注册: 2011-03-15
- 性别: GG
- 专业: 催化化学
8楼2014-01-13 10:59:48
xiaobo1255
木虫 (著名写手)
- 应助: 39 (小学生)
- 金币: 6593.7
- 散金: 4107
- 红花: 13
- 帖子: 1987
- 在线: 1727小时
- 虫号: 581293
- 注册: 2008-07-18
- 专业: 电化学
9楼2014-01-13 14:59:57
foolishmani
铜虫 (职业作家)
- 应助: 31 (小学生)
- 金币: 11734.7
- 散金: 1147
- 红花: 19
- 帖子: 3171
- 在线: 1540.3小时
- 虫号: 1578969
- 注册: 2012-01-15
- 专业: 电化学
10楼2014-01-13 18:43:31
20